1 dnl Process this file with autoconf to produce a configure script.
4 dnl Developers, please strive to achieve this order:
6 dnl 0. Initialization and options processing
12 dnl 6. Compiler characteristics
13 dnl 7. Functions, global variables
14 dnl 8. System services
16 dnl Read the Autoconf manual for details.
18 m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
20 AC_INIT([PostgreSQL], [15.7], [pgsql-bugs@lists.postgresql.org], [], [https://www.postgresql.org/])
22 m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
23 Untested combinations of 'autoconf' and PostgreSQL versions are not
24 recommended. You can remove the check from 'configure.ac' but it is then
25 your responsibility whether the result works or not.])])
26 AC_COPYRIGHT([Copyright (c) 1996-2022, PostgreSQL Global Development Group])
27 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
28 AC_CONFIG_AUX_DIR(config)
29 AC_PREFIX_DEFAULT(/usr/local/pgsql)
30 AC_DEFINE_UNQUOTED(CONFIGURE_ARGS, ["$ac_configure_args"], [Saved arguments from configure])
32 [PG_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\)'`]
33 [PG_MINORVERSION=`expr "$PACKAGE_VERSION" : '.*\.\([0-9][0-9]*\)'`]
34 test -n "$PG_MINORVERSION" || PG_MINORVERSION=0
35 AC_SUBST(PG_MAJORVERSION)
36 AC_DEFINE_UNQUOTED(PG_MAJORVERSION, "$PG_MAJORVERSION", [PostgreSQL major version as a string])
37 AC_DEFINE_UNQUOTED(PG_MAJORVERSION_NUM, $PG_MAJORVERSION, [PostgreSQL major version number])
38 AC_DEFINE_UNQUOTED(PG_MINORVERSION_NUM, $PG_MINORVERSION, [PostgreSQL minor version number])
40 PGAC_ARG_REQ(with, extra-version, [STRING], [append STRING to version],
41 [PG_VERSION="$PACKAGE_VERSION$withval"],
42 [PG_VERSION="$PACKAGE_VERSION"])
43 AC_DEFINE_UNQUOTED(PG_VERSION, "$PG_VERSION", [PostgreSQL version as a string])
48 AC_MSG_CHECKING([which template to use])
50 PGAC_ARG_REQ(with, template, [NAME], [override operating system template],
53 list) echo; ls "$srcdir/src/template"; exit;;
54 *) if test -f "$srcdir/src/template/$with_template" ; then
57 AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])
62 # --with-template not given
66 cygwin*|msys*) template=cygwin ;;
67 darwin*) template=darwin ;;
68 dragonfly*) template=netbsd ;;
69 freebsd*) template=freebsd ;;
70 hpux*) template=hpux ;;
71 linux*|gnu*|k*bsd*-gnu)
73 mingw*) template=win32 ;;
74 netbsd*) template=netbsd ;;
75 openbsd*) template=openbsd ;;
76 solaris*) template=solaris ;;
79 if test x"$template" = x"" ; then
81 *******************************************************************
82 PostgreSQL has apparently not been ported to your platform yet.
83 To try a manual configuration, look into the src/template directory
84 for a similar platform and use the '--with-template=' option.
86 Please also contact <]AC_PACKAGE_BUGREPORT[> to see about
87 rectifying this. Include the above 'checking host system type...'
89 *******************************************************************
95 AC_MSG_RESULT([$template])
100 # Initialize default assumption that we do not need separate assembly code
101 # for TAS (test-and-set). This can be overridden by the template file
102 # when it's executed.
106 # Default, works for most platforms, override in template file if needed
112 ## Command line options
116 # Add non-standard directories to the include path
118 PGAC_ARG_REQ(with, includes, [DIRS], [look for additional header files in DIRS])
122 # Add non-standard directories to the library search path
124 PGAC_ARG_REQ(with, libraries, [DIRS], [look for additional libraries in DIRS],
125 [LIBRARY_DIRS=$withval])
127 PGAC_ARG_REQ(with, libs, [DIRS], [alternative spelling of --with-libraries],
128 [LIBRARY_DIRS=$withval])
132 # 64-bit integer date/time storage is now the only option, but to avoid
133 # unnecessary breakage of build scripts, continue to accept an explicit
134 # "--enable-integer-datetimes" switch.
136 PGAC_ARG_BOOL(enable, integer-datetimes, yes, [obsolete option, no longer supported],
138 [AC_MSG_ERROR([--disable-integer-datetimes is no longer supported])])
144 AC_MSG_CHECKING([whether NLS is wanted])
145 PGAC_ARG_OPTARG(enable, nls,
146 [LANGUAGES], [enable Native Language Support],
148 [WANTED_LANGUAGES=$enableval],
149 [AC_DEFINE(ENABLE_NLS, 1,
150 [Define to 1 if you want National Language Support. (--enable-nls)])])
151 AC_MSG_RESULT([$enable_nls])
153 AC_SUBST(WANTED_LANGUAGES)
156 # Default port number (--with-pgport), default 5432
158 AC_MSG_CHECKING([for default port number])
159 PGAC_ARG_REQ(with, pgport, [PORTNUM], [set default port number [5432]],
160 [default_port=$withval],
162 AC_MSG_RESULT([$default_port])
163 # Need both of these because some places want an integer and some a string
164 AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},
165 [Define to the default TCP port number on which the server listens and
166 to which clients will try to connect. This can be overridden at run-time,
167 but it's convenient if your clients have the right default compiled in.
168 (--with-pgport=PORTNUM)])
169 AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",
170 [Define to the default TCP port number as a string constant.])
171 AC_SUBST(default_port)
173 # It's worth validating port; you can get very confusing errors otherwise
174 if test x"$default_port" = x""; then
175 AC_MSG_ERROR([invalid --with-pgport specification: empty string])
176 elif test ! x`echo "$default_port" | sed -e 's/[[0-9]]*//'` = x""; then
177 AC_MSG_ERROR([invalid --with-pgport specification: must be a number])
178 elif test ! x`echo "$default_port" | sed -e 's/^0.//'` = x"$default_port"; then
179 AC_MSG_ERROR([invalid --with-pgport specification: must not have leading 0])
180 elif test "$default_port" -lt "1" -o "$default_port" -gt "65535"; then
181 AC_MSG_ERROR([invalid --with-pgport specification: must be between 1 and 65535])
185 # '-rpath'-like feature can be disabled
187 PGAC_ARG_BOOL(enable, rpath, yes,
188 [do not embed shared library search path in executables])
189 AC_SUBST(enable_rpath)
194 PGAC_ARG_BOOL(enable, spinlocks, yes,
195 [do not use spinlocks])
200 PGAC_ARG_BOOL(enable, atomics, yes,
201 [do not use atomic operations])
204 # --enable-debug adds -g to compiler flags
206 PGAC_ARG_BOOL(enable, debug, no,
207 [build with debugging symbols (-g)])
208 AC_SUBST(enable_debug)
211 # --enable-profiling enables gcc profiling
213 PGAC_ARG_BOOL(enable, profiling, no,
214 [build with profiling enabled ])
217 # --enable-coverage enables generation of code coverage metrics with gcov
219 PGAC_ARG_BOOL(enable, coverage, no,
220 [build with coverage testing instrumentation],
221 [PGAC_PATH_PROGS(GCOV, gcov)
222 if test -z "$GCOV"; then
223 AC_MSG_ERROR([gcov not found])
225 PGAC_PATH_PROGS(LCOV, lcov)
226 if test -z "$LCOV"; then
227 AC_MSG_ERROR([lcov not found])
229 PGAC_PATH_PROGS(GENHTML, genhtml)
230 if test -z "$GENHTML"; then
231 AC_MSG_ERROR([genhtml not found])
233 AC_SUBST(enable_coverage)
238 PGAC_ARG_BOOL(enable, dtrace, no,
239 [build with DTrace support],
240 [PGAC_PATH_PROGS(DTRACE, dtrace)
241 if test -z "$DTRACE"; then
242 AC_MSG_ERROR([dtrace not found])
244 AC_SUBST(DTRACEFLAGS)])
245 AC_SUBST(enable_dtrace)
250 PGAC_ARG_BOOL(enable, tap-tests, no,
251 [enable TAP tests (requires Perl and IPC::Run)])
252 AC_SUBST(enable_tap_tests)
257 AC_MSG_CHECKING([for block size])
258 PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],
259 [blocksize=$withval],
268 *) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])
270 AC_MSG_RESULT([${blocksize}kB])
272 AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [
273 Size of a disk block --- this also limits the size of a tuple. You
274 can set it bigger if you need bigger tuples (although TOAST should
275 reduce the need to have large tuples, since fields can be spread
276 across multiple tuples).
278 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
279 is currently 2^15 (32768). This is determined by the 15-bit widths
280 of the lp_off and lp_len fields in ItemIdData (see
281 include/storage/itemid.h).
283 Changing BLCKSZ requires an initdb.
287 # Relation segment size
289 AC_MSG_CHECKING([for segment size])
290 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
293 # this expression is set up to avoid unnecessary integer overflow
294 # blocksize is already guaranteed to be a factor of 1024
295 RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`
296 test $? -eq 0 || exit 1
297 AC_MSG_RESULT([${segsize}GB])
299 AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [
300 RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
301 Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
302 relations bigger than that are divided into multiple files.
304 RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.
305 This is often 2 GB or 4GB in a 32-bit operating system, unless you
306 have large file support enabled. By default, we make the limit 1 GB
307 to avoid any possible integer-overflow problems within the OS.
308 A limit smaller than necessary only means we divide a large
309 relation into more chunks than necessary, so it seems best to err
310 in the direction of a small limit.
312 A power-of-2 value is recommended to save a few cycles in md.c,
313 but is not absolutely required.
315 Changing RELSEG_SIZE requires an initdb.
321 AC_MSG_CHECKING([for WAL block size])
322 PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],
323 [wal_blocksize=$withval],
325 case ${wal_blocksize} in
326 1) XLOG_BLCKSZ=1024;;
327 2) XLOG_BLCKSZ=2048;;
328 4) XLOG_BLCKSZ=4096;;
329 8) XLOG_BLCKSZ=8192;;
330 16) XLOG_BLCKSZ=16384;;
331 32) XLOG_BLCKSZ=32768;;
332 64) XLOG_BLCKSZ=65536;;
333 *) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])
335 AC_MSG_RESULT([${wal_blocksize}kB])
337 AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [
338 Size of a WAL file block. This need have no particular relation to BLCKSZ.
339 XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
340 XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
341 buffers, else direct I/O may fail.
343 Changing XLOG_BLCKSZ requires an initdb.
350 # For historical reasons you can also use --with-CC to specify the C compiler
351 # to use, although the standard way to do this is to set the CC environment
353 PGAC_ARG_REQ(with, CC, [CMD], [set compiler (deprecated)], [CC=$with_CC])
356 aix) pgac_cc_list="gcc xlc"; pgac_cxx_list="g++ xlC";;
357 *) pgac_cc_list="gcc cc"; pgac_cxx_list="g++ c++";;
360 AC_PROG_CC([$pgac_cc_list])
363 # Error out if the compiler does not support C99, as the codebase
365 if test "$ac_cv_prog_cc_c99" = no; then
366 AC_MSG_ERROR([C compiler "$CC" does not support C99])
369 AC_PROG_CXX([$pgac_cxx_list])
371 # Check if it's Intel's compiler, which (usually) pretends to be gcc,
372 # but has idiosyncrasies of its own. We assume icc will define
373 # __INTEL_COMPILER regardless of CFLAGS.
374 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
376 @%:@endif])], [ICC=yes], [ICC=no])
378 # Check if it's Sun Studio compiler. We assume that
379 # __SUNPRO_C will be defined for Sun Studio compilers
380 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
382 @%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
384 AC_SUBST(SUN_STUDIO_CC)
390 # Checked early because subsequent tests depend on it.
391 PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],
392 [AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])
394 dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions
395 AS_IF([test "$with_llvm" = yes], [
406 . "$srcdir/src/template/$template" || exit
408 # C[XX]FLAGS are selected so:
409 # If the user specifies something in the environment, that is used.
410 # else: If the template file set something, that is used.
411 # else: If coverage was enabled, don't set anything.
412 # else: If the compiler is GCC, then we use -O2.
413 # else: If the compiler is something else, then we use -O, unless debugging.
415 if test "$ac_env_CFLAGS_set" = set; then
416 CFLAGS=$ac_env_CFLAGS_value
417 elif test "${CFLAGS+set}" = set; then
418 : # (keep what template set)
419 elif test "$enable_coverage" = yes; then
420 : # no optimization by default
421 elif test "$GCC" = yes; then
424 # if the user selected debug mode, don't use -O
425 if test "$enable_debug" != yes; then
430 if test "$ac_env_CXXFLAGS_set" = set; then
431 CXXFLAGS=$ac_env_CXXFLAGS_value
432 elif test "${CXXFLAGS+set}" = set; then
433 : # (keep what template set)
434 elif test "$enable_coverage" = yes; then
435 : # no optimization by default
436 elif test "$GCC" = yes; then
439 # if the user selected debug mode, don't use -O
440 if test "$enable_debug" != yes; then
445 # When generating bitcode (for inlining) we always want to use -O2
446 # even when --enable-debug is specified. The bitcode is not going to
447 # be used for line-by-line debugging, and JIT inlining doesn't work
448 # without at least -O1 (otherwise clang will emit 'noinline'
449 # attributes everywhere), which is bad for testing. Still allow the
450 # environment to override if done explicitly.
451 if test "$ac_env_BITCODE_CFLAGS_set" = set; then
452 BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value
454 BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"
456 if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then
457 BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value
459 BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"
462 # C[XX]FLAGS we determined above will be added back at the end
465 user_CXXFLAGS=$CXXFLAGS
467 user_BITCODE_CFLAGS=$BITCODE_CFLAGS
469 user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS
472 # set CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE from the environment, if present
473 if test "$ac_env_CFLAGS_UNROLL_LOOPS_set" = set; then
474 CFLAGS_UNROLL_LOOPS=$ac_env_CFLAGS_UNROLL_LOOPS_value
476 if test "$ac_env_CFLAGS_VECTORIZE_set" = set; then
477 CFLAGS_VECTORIZE=$ac_env_CFLAGS_VECTORIZE_value
480 # Some versions of GCC support some additional useful warning flags.
481 # Check whether they are supported, and add them to CFLAGS if so.
482 # ICC pretends to be GCC but it's lying; it doesn't support these flags,
483 # but has its own. Also check other compiler-specific flags here.
485 if test "$GCC" = yes -a "$ICC" = no; then
486 CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
487 CXXFLAGS="-Wall -Wpointer-arith"
488 # These work in some but not all gcc versions
490 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
491 # -Wdeclaration-after-statement isn't applicable for C++. Specific C files
492 # disable it, so AC_SUBST the negative form.
493 PERMIT_DECLARATION_AFTER_STATEMENT=
494 if test x"$save_CFLAGS" != x"$CFLAGS"; then
495 PERMIT_DECLARATION_AFTER_STATEMENT=-Wno-declaration-after-statement
497 AC_SUBST(PERMIT_DECLARATION_AFTER_STATEMENT)
498 # Really don't want VLAs to be used in our dialect of C
499 PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])
500 # On macOS, complain about usage of symbols newer than the deployment target
501 PGAC_PROG_CC_CFLAGS_OPT([-Werror=unguarded-availability-new])
502 PGAC_PROG_CXX_CFLAGS_OPT([-Werror=unguarded-availability-new])
503 # -Wvla is not applicable for C++
504 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
505 PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])
506 PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])
507 PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])
508 PGAC_PROG_CC_CFLAGS_OPT([-Wimplicit-fallthrough=3])
509 PGAC_PROG_CXX_CFLAGS_OPT([-Wimplicit-fallthrough=3])
510 PGAC_PROG_CC_CFLAGS_OPT([-Wcast-function-type])
511 PGAC_PROG_CXX_CFLAGS_OPT([-Wcast-function-type])
512 # This was included in -Wall/-Wformat in older GCC versions
513 PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
514 PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])
515 # Disable strict-aliasing rules; needed for gcc 3.3+
516 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
517 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
518 # Disable optimizations that assume no overflow; needed for gcc 4.3+
519 PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
520 PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])
521 # Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
522 PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
523 PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])
524 # Optimization flags for specific files that benefit from loop unrolling
525 PGAC_PROG_CC_VAR_OPT(CFLAGS_UNROLL_LOOPS, [-funroll-loops])
526 # Optimization flags for specific files that benefit from vectorization
527 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize])
529 # The following tests want to suppress various unhelpful warnings by adding
530 # -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo
531 # switches, so we have to test for the positive form and if that works,
532 # add the negative form. Note that tests of this form typically need to
533 # be duplicated in the BITCODE_CFLAGS setup stanza below.
535 # Suppress clang's unhelpful unused-command-line-argument warnings.
537 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
538 if test -n "$NOT_THE_CFLAGS"; then
539 CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
541 # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
542 # of warnings when building plperl because of usages in the Perl headers.
544 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
545 if test -n "$NOT_THE_CFLAGS"; then
546 CFLAGS="$CFLAGS -Wno-compound-token-split-by-macro"
548 # Similarly remove clang 15+'s deprecated-non-prototype, as it warns about
549 # tree-walking APIs that we can't reasonably change in the back branches.
551 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wdeprecated-non-prototype])
552 if test -n "$NOT_THE_CFLAGS"; then
553 CFLAGS="$CFLAGS -Wno-deprecated-non-prototype"
555 # Similarly disable useless truncation warnings from gcc 8+
557 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])
558 if test -n "$NOT_THE_CFLAGS"; then
559 CFLAGS="$CFLAGS -Wno-format-truncation"
562 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])
563 if test -n "$NOT_THE_CFLAGS"; then
564 CFLAGS="$CFLAGS -Wno-stringop-truncation"
566 elif test "$ICC" = yes; then
567 # Intel's compiler has a bug/misoptimization in checking for
568 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
569 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
570 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
571 # Make sure strict aliasing is off (though this is said to be the default)
572 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
573 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
574 elif test "$PORTNAME" = "aix"; then
575 # AIX's xlc has to have strict aliasing turned off too
576 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
577 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
578 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
579 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
580 elif test "$PORTNAME" = "hpux"; then
581 # On some versions of HP-UX, libm functions do not set errno by default.
582 # Fix that by using +Olibmerrno if the compiler recognizes it.
583 PGAC_PROG_CC_CFLAGS_OPT([+Olibmerrno])
584 PGAC_PROG_CXX_CFLAGS_OPT([+Olibmerrno])
587 AC_SUBST(CFLAGS_UNROLL_LOOPS)
588 AC_SUBST(CFLAGS_VECTORIZE)
590 # Determine flags used to emit bitcode for JIT inlining.
591 # 1. We must duplicate any behaviour-changing compiler flags used above,
592 # to keep compatibility with the compiler used for normal Postgres code.
593 # 2. We don't bother to duplicate extra-warnings switches --- seeing a
594 # warning in the main build is enough.
595 # 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.
596 if test "$with_llvm" = yes ; then
597 CLANGXX="$CLANG -xc++"
599 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
600 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
601 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
602 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
603 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
604 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
606 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])
607 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])
610 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
611 if test -n "$NOT_THE_CFLAGS"; then
612 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
615 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
616 if test -n "$NOT_THE_CFLAGS"; then
617 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
620 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wdeprecated-non-prototype])
621 if test -n "$NOT_THE_CFLAGS"; then
622 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-deprecated-non-prototype"
625 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
626 if test -n "$NOT_THE_CFLAGS"; then
627 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
630 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
631 if test -n "$NOT_THE_CFLAGS"; then
632 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
636 # supply -g if --enable-debug
637 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
641 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
642 CXXFLAGS="$CXXFLAGS -g"
645 # enable code coverage if --enable-coverage
646 if test "$enable_coverage" = yes; then
647 if test "$GCC" = yes; then
648 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
649 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
651 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
655 # enable profiling if --enable-profiling
656 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
657 if test "$GCC" = yes; then
658 AC_DEFINE([PROFILE_PID_DIR], 1,
659 [Define to 1 to allow profiling output to be saved separately for each process.])
660 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
661 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
663 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
667 # On Solaris, we need this #define to get POSIX-conforming versions
668 # of many interfaces (sigwait, getpwuid_r, ...).
669 if test "$PORTNAME" = "solaris"; then
670 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
673 # We already have this in Makefile.win32, but configure needs it too
674 if test "$PORTNAME" = "win32"; then
675 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
678 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
679 # user-specified flags (if any) at the end. This lets users override
680 # the automatic additions.
681 CFLAGS="$CFLAGS $user_CFLAGS"
682 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
683 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
684 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
686 AC_SUBST(BITCODE_CFLAGS)
687 AC_SUBST(BITCODE_CXXFLAGS)
689 # The template file must set up CFLAGS_SL; we don't support user override
692 # Check if the compiler still works with the final flag settings
693 # (note, we're not checking that for CXX, which is optional)
694 AC_MSG_CHECKING([whether the C compiler still works])
695 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
696 [AC_MSG_RESULT(yes)],
698 AC_MSG_ERROR([cannot proceed])])
700 # Defend against gcc -ffast-math
701 if test "$GCC" = yes; then
702 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
704 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
707 # Defend against clang being used on x86-32 without SSE2 enabled. As current
708 # versions of clang do not understand -fexcess-precision=standard, the use of
709 # x87 floating point operations leads to problems like isinf possibly returning
710 # false for a value that is infinite when converted from the 80bit register to
711 # the 8byte memory representation.
713 # Only perform the test if the compiler doesn't understand
714 # -fexcess-precision=standard, that way a potentially fixed compiler will work
716 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
717 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
718 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
722 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
730 # Set up TAS assembly code if needed; the template file has now had its
731 # chance to request this.
733 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
735 if test "$need_tas" = yes ; then
742 AC_SUBST(DLSUFFIX)dnl
743 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
744 [Define to the file name extension of dynamically-loadable modules.])
747 # Set up pkg_config in case we need it below
752 # Automatic dependency tracking
754 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
760 # Enable assert checks
762 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
763 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
764 [Define to 1 to build with assertion checks. (--enable-cassert)])])
768 # Include directories
771 IFS="${IFS}${PATH_SEPARATOR}"
772 # SRCH_INC comes from the template file
773 for dir in $with_includes $SRCH_INC; do
774 if test -d "$dir"; then
775 INCLUDES="$INCLUDES -I$dir"
777 AC_MSG_WARN([*** Include directory $dir does not exist.])
785 # Library directories
788 IFS="${IFS}${PATH_SEPARATOR}"
789 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
790 for dir in $LIBRARY_DIRS $SRCH_LIB; do
791 if test -d "$dir"; then
792 LIBDIRS="$LIBDIRS -L$dir"
794 AC_MSG_WARN([*** Library directory $dir does not exist.])
800 # Enable thread-safe client libraries
802 AC_MSG_CHECKING([allow thread-safe client libraries])
803 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
804 if test "$enable_thread_safety" = yes; then
805 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
806 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
808 AC_MSG_RESULT([$enable_thread_safety])
809 AC_SUBST(enable_thread_safety)
814 AC_MSG_CHECKING([whether to build with ICU support])
815 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
816 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
817 AC_MSG_RESULT([$with_icu])
820 if test "$with_icu" = yes; then
821 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
825 # Optionally build Tcl modules (PL/Tcl)
827 AC_MSG_CHECKING([whether to build with Tcl])
828 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
829 AC_MSG_RESULT([$with_tcl])
832 # We see if the path to the Tcl/Tk configuration scripts is specified.
833 # This will override the use of tclsh to find the paths to search.
835 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
838 # Optionally build Perl modules (PL/Perl)
840 AC_MSG_CHECKING([whether to build Perl modules])
841 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
842 AC_MSG_RESULT([$with_perl])
846 # Optionally build Python modules (PL/Python)
848 AC_MSG_CHECKING([whether to build Python modules])
849 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
850 AC_MSG_RESULT([$with_python])
851 AC_SUBST(with_python)
856 AC_MSG_CHECKING([whether to build with GSSAPI support])
857 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
859 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
860 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
862 AC_MSG_RESULT([$with_gssapi])
863 AC_SUBST(with_gssapi)
870 # Kerberos configuration parameters
872 PGAC_ARG_REQ(with, krb-srvnam,
873 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
875 [with_krb_srvnam="postgres"])
876 AC_SUBST(with_krb_srvnam)
877 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
878 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
884 AC_MSG_CHECKING([whether to build with PAM support])
885 PGAC_ARG_BOOL(with, pam, no,
886 [build with PAM support],
887 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
888 AC_MSG_RESULT([$with_pam])
894 AC_MSG_CHECKING([whether to build with BSD Authentication support])
895 PGAC_ARG_BOOL(with, bsd-auth, no,
896 [build with BSD Authentication support],
897 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
898 AC_MSG_RESULT([$with_bsd_auth])
904 AC_MSG_CHECKING([whether to build with LDAP support])
905 PGAC_ARG_BOOL(with, ldap, no,
906 [build with LDAP support],
907 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
908 AC_MSG_RESULT([$with_ldap])
915 AC_MSG_CHECKING([whether to build with Bonjour support])
916 PGAC_ARG_BOOL(with, bonjour, no,
917 [build with Bonjour support],
918 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
919 AC_MSG_RESULT([$with_bonjour])
925 AC_MSG_CHECKING([whether to build with SELinux support])
926 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
927 AC_SUBST(with_selinux)
928 AC_MSG_RESULT([$with_selinux])
933 AC_MSG_CHECKING([whether to build with systemd support])
934 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
935 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
936 AC_SUBST(with_systemd)
937 AC_MSG_RESULT([$with_systemd])
942 PGAC_ARG_BOOL(with, readline, yes,
943 [do not use GNU Readline nor BSD Libedit for editing])
944 # readline on MinGW has problems with backslashes in psql and other bugs.
945 # This is particularly a problem with non-US code pages.
946 # Therefore disable its use until we understand the cause. 2004-07-20
947 if test "$PORTNAME" = "win32"; then
948 if test "$with_readline" = yes; then
949 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
953 AC_SUBST(with_readline)
959 PGAC_ARG_BOOL(with, libedit-preferred, no,
960 [prefer BSD Libedit over GNU Readline])
966 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
967 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
968 # UUID library. More than one of these might be present on a given platform,
969 # so we make the user say which one she wants.
971 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
972 if test x"$with_uuid" = x"" ; then
975 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
976 if test "$with_ossp_uuid" = yes ; then
980 if test "$with_uuid" != no ; then
981 if test "$with_uuid" = bsd ; then
982 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
983 elif test "$with_uuid" = e2fs ; then
984 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
985 elif test "$with_uuid" = ossp ; then
986 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
988 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
997 AC_MSG_CHECKING([whether to build with XML support])
998 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
999 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1000 AC_MSG_RESULT([$with_libxml])
1001 AC_SUBST(with_libxml)
1003 if test "$with_libxml" = yes ; then
1004 # Check pkg-config, then xml2-config. But for backwards compatibility,
1005 # setting XML2_CONFIG overrides pkg-config.
1006 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1007 have_libxml2_pkg_config=no
1008 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1009 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1010 [have_libxml2_pkg_config=yes], [# do nothing])
1012 if test "$have_libxml2_pkg_config" = no ; then
1013 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1014 if test -n "$XML2_CONFIG"; then
1015 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1016 XML2_LIBS=`$XML2_CONFIG --libs`
1019 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1020 for pgac_option in $XML2_CFLAGS; do
1021 case $pgac_option in
1022 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1025 for pgac_option in $XML2_LIBS; do
1026 case $pgac_option in
1027 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1036 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1037 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1040 AC_SUBST(with_libxslt)
1045 PGAC_ARG_REQ(with, system-tzdata,
1046 [DIR], [use system time zone data in DIR])
1047 AC_SUBST(with_system_tzdata)
1052 PGAC_ARG_BOOL(with, zlib, yes,
1059 AC_MSG_CHECKING([whether to build with LZ4 support])
1060 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1061 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1062 AC_MSG_RESULT([$with_lz4])
1065 if test "$with_lz4" = yes; then
1066 PKG_CHECK_MODULES(LZ4, liblz4)
1067 # We only care about -I, -D, and -L switches;
1068 # note that -llz4 will be added by AC_CHECK_LIB below.
1069 for pgac_option in $LZ4_CFLAGS; do
1070 case $pgac_option in
1071 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1074 for pgac_option in $LZ4_LIBS; do
1075 case $pgac_option in
1076 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1084 AC_MSG_CHECKING([whether to build with ZSTD support])
1085 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1086 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1087 AC_MSG_RESULT([$with_zstd])
1090 if test "$with_zstd" = yes; then
1091 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1092 # We only care about -I, -D, and -L switches;
1093 # note that -lzstd will be added by AC_CHECK_LIB below.
1094 for pgac_option in $ZSTD_CFLAGS; do
1095 case $pgac_option in
1096 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1099 for pgac_option in $ZSTD_LIBS; do
1100 case $pgac_option in
1101 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1109 CPPFLAGS="$CPPFLAGS $INCLUDES"
1110 LDFLAGS="$LDFLAGS $LIBDIRS"
1112 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1113 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1117 AC_SUBST(with_gnu_ld)
1120 AC_CHECK_TOOL(AR, ar, ar)
1121 if test "$PORTNAME" = "win32"; then
1122 AC_CHECK_TOOL(DLLTOOL, dlltool, dlltool)
1123 AC_CHECK_TOOL(DLLWRAP, dllwrap, dllwrap)
1124 AC_CHECK_TOOL(WINDRES, windres, windres)
1128 # When Autoconf chooses install-sh as install program it tries to generate
1129 # a relative path to it in each makefile where it substitutes it. This clashes
1130 # with our Makefile.global concept. This workaround helps.
1132 *install-sh*) install_bin='';;
1133 *) install_bin=$INSTALL;;
1135 AC_SUBST(install_bin)
1137 PGAC_PATH_PROGS(TAR, tar)
1140 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1141 # a relative path to it in each makefile where it substitutes it. This clashes
1142 # with our Makefile.global concept. This workaround helps.
1144 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1151 if test "$with_perl" = yes; then
1152 if test -z "$PERL"; then
1153 AC_MSG_ERROR([Perl not found])
1155 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1156 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1157 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1158 You might have to rebuild your Perl installation. Refer to the
1159 documentation for details. Use --without-perl to disable building
1162 # On most platforms, archlibexp is also where the Perl include files live ...
1163 perl_includespec="-I$perl_archlibexp/CORE"
1164 # ... but on newer macOS versions, we must use -iwithsysroot to look
1166 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1167 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1168 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1171 AC_SUBST(perl_includespec)dnl
1172 PGAC_CHECK_PERL_EMBED_CCFLAGS
1173 PGAC_CHECK_PERL_EMBED_LDFLAGS
1176 if test "$with_python" = yes; then
1178 PGAC_CHECK_PYTHON_EMBED_SETUP
1181 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1182 PGAC_PATH_PROGS(ZIC, zic)
1183 if test -z "$ZIC"; then
1185 When cross-compiling, either use the option --with-system-tzdata to use
1186 existing time-zone data, or set the environment variable ZIC to a zic
1187 program to use during the build.])
1194 # For each platform, we need to know about any special compile and link
1195 # libraries, and whether the normal C function names are thread-safe.
1196 # See the comment at the top of src/port/thread.c for more information.
1197 # WIN32 doesn't need the pthread tests; it always uses threads
1199 # These tests are run before the library-tests, because linking with the
1200 # other libraries can pull in the pthread functions as a side-effect. We
1201 # want to use the -pthread or similar flags directly, and not rely on
1202 # the side-effects of linking with some other library.
1204 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1205 dnl invocation below is the first one in the script, and autoconf generates
1206 dnl additional code for that, which must not be inside the if-block. AS_IF
1207 dnl knows how to do that.
1208 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1210 AX_PTHREAD # set thread flags
1212 # Some platforms use these, so just define them. They can't hurt if they
1213 # are not supported.
1214 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1216 # Check for *_r functions
1219 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1220 LIBS="$LIBS $PTHREAD_LIBS"
1222 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1223 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1225 AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
1227 # Do test here with the proper thread flags
1228 PGAC_FUNC_STRERROR_R_INT
1234 # do not use values from template file
1239 AC_SUBST(PTHREAD_CFLAGS)
1240 AC_SUBST(PTHREAD_LIBS)
1246 ## Most libraries are included only if they demonstrably provide a function
1247 ## we need, but libm is an exception: always include it, because there are
1248 ## too many compilers that play cute optimization games that will break
1249 ## probes for standard functions such as pow().
1252 AC_CHECK_LIB(m, main)
1253 AC_SEARCH_LIBS(setproctitle, util)
1254 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1255 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1256 # required. Just checking for dlsym() ought to suffice.
1257 AC_SEARCH_LIBS(dlsym, dl)
1258 AC_SEARCH_LIBS(socket, [socket ws2_32])
1259 AC_SEARCH_LIBS(shl_load, dld)
1260 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1261 AC_SEARCH_LIBS(shm_open, rt)
1262 AC_SEARCH_LIBS(shm_unlink, rt)
1263 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1265 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1267 AC_SEARCH_LIBS(shmget, cygipc)
1269 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1271 if test "$enable_thread_safety" = yes; then
1272 AC_SEARCH_LIBS(gethostbyname_r, nsl)
1273 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1276 if test "$with_readline" = yes; then
1278 if test x"$pgac_cv_check_readline" = x"no"; then
1279 AC_MSG_ERROR([readline library not found
1280 If you have readline already installed, see config.log for details on the
1281 failure. It is possible the compiler isn't looking in the proper directory.
1282 Use --without-readline to disable readline support.])
1286 if test "$with_zlib" = yes; then
1287 AC_CHECK_LIB(z, inflate, [],
1288 [AC_MSG_ERROR([zlib library not found
1289 If you have zlib already installed, see config.log for details on the
1290 failure. It is possible the compiler isn't looking in the proper directory.
1291 Use --without-zlib to disable zlib support.])])
1294 if test "$enable_spinlocks" = yes; then
1295 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1298 *** Not using spinlocks will cause poor performance.])
1301 if test "$enable_atomics" = yes; then
1302 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1305 *** Not using atomic operations will cause poor performance.])
1308 if test "$with_gssapi" = yes ; then
1309 if test "$PORTNAME" != "win32"; then
1310 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1311 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1313 LIBS="$LIBS -lgssapi32"
1320 # There is currently only one supported SSL/TLS library: OpenSSL.
1322 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1323 if test x"$with_ssl" = x"" ; then
1326 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1327 if test "$with_openssl" = yes ; then
1331 if test "$with_ssl" = openssl ; then
1333 # Minimum required OpenSSL version is 1.0.1
1334 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1335 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1336 if test "$PORTNAME" != "win32"; then
1337 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1338 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1340 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1341 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1343 # Function introduced in OpenSSL 1.0.2.
1344 AC_CHECK_FUNCS([X509_get_signature_nid])
1345 # Functions introduced in OpenSSL 1.1.0. We used to check for
1346 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1347 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1348 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1350 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1351 # OpenSSL versions before 1.1.0 required setting callback functions, for
1352 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1353 # function was removed.
1354 AC_CHECK_FUNCS([CRYPTO_lock])
1355 # Function introduced in OpenSSL 1.1.1.
1356 AC_CHECK_FUNCS([X509_get_signature_info])
1357 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1358 elif test "$with_ssl" != no ; then
1359 AC_MSG_ERROR([--with-ssl must specify openssl])
1363 if test "$with_pam" = yes ; then
1364 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1367 if test "$with_libxml" = yes ; then
1368 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1371 if test "$with_libxslt" = yes ; then
1372 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1375 if test "$with_lz4" = yes ; then
1376 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1379 if test "$with_zstd" = yes ; then
1380 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1383 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1384 # also, on AIX, we may need to have openssl in LIBS for this step.
1385 if test "$with_ldap" = yes ; then
1387 if test "$PORTNAME" != "win32"; then
1388 AC_CHECK_LIB(ldap, ldap_bind, [],
1389 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1391 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1392 # This test is carried out against libldap.
1393 AC_CHECK_FUNCS([ldap_initialize])
1394 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1395 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1396 # library from a separate OpenLDAP installation). The most reliable
1397 # way to check that is to check for a function introduced in 2.5.
1398 AC_CHECK_FUNC([ldap_verify_credentials],
1399 [thread_safe_libldap=yes],
1400 [thread_safe_libldap=no])
1401 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1402 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1403 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1405 AC_CHECK_LIB(ldap_r, ldap_bind,
1406 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1407 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1408 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1410 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1413 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1414 LDAP_LIBS_FE="-lwldap32"
1415 LDAP_LIBS_BE="-lwldap32"
1419 AC_SUBST(LDAP_LIBS_FE)
1420 AC_SUBST(LDAP_LIBS_BE)
1422 # for contrib/sepgsql
1423 if test "$with_selinux" = yes; then
1424 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1425 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1428 # for contrib/uuid-ossp
1429 if test "$with_uuid" = bsd ; then
1430 # On BSD, the UUID functions are in libc
1431 AC_CHECK_FUNC(uuid_to_string,
1433 [AC_MSG_ERROR([BSD UUID functions are not present])])
1434 elif test "$with_uuid" = e2fs ; then
1435 # On macOS, the UUID functions are in libc
1436 AC_CHECK_FUNC(uuid_generate,
1438 [AC_CHECK_LIB(uuid, uuid_generate,
1439 [UUID_LIBS="-luuid"],
1440 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1441 elif test "$with_uuid" = ossp ; then
1442 AC_CHECK_LIB(ossp-uuid, uuid_export,
1443 [UUID_LIBS="-lossp-uuid"],
1444 [AC_CHECK_LIB(uuid, uuid_export,
1445 [UUID_LIBS="-luuid"],
1446 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1457 AC_CHECK_HEADERS(m4_normalize([
1487 # On BSD, test for net/if.h will fail unless sys/socket.h
1488 # is included first.
1489 AC_CHECK_HEADERS(net/if.h, [], [],
1490 [AC_INCLUDES_DEFAULT
1491 #include <sys/socket.h>
1494 # On OpenBSD, test for sys/ucred.h will fail unless sys/param.h
1495 # is included first.
1496 AC_CHECK_HEADERS(sys/ucred.h, [], [],
1497 [AC_INCLUDES_DEFAULT
1498 #include <sys/param.h>
1501 # At least on IRIX, test for netinet/tcp.h will fail unless
1502 # netinet/in.h is included first.
1503 AC_CHECK_HEADERS(netinet/tcp.h, [], [],
1504 [AC_INCLUDES_DEFAULT
1505 #include <netinet/in.h>
1508 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1509 AC_CHECK_HEADERS(readline/readline.h, [],
1510 [AC_CHECK_HEADERS(readline.h, [],
1511 [AC_MSG_ERROR([readline header not found
1512 If you have readline already installed, see config.log for details on the
1513 failure. It is possible the compiler isn't looking in the proper directory.
1514 Use --without-readline to disable readline support.])])])
1515 AC_CHECK_HEADERS(readline/history.h, [],
1516 [AC_CHECK_HEADERS(history.h, [],
1517 [AC_MSG_ERROR([history header not found
1518 If you have readline already installed, see config.log for details on the
1519 failure. It is possible the compiler isn't looking in the proper directory.
1520 Use --without-readline to disable readline support.])])])
1523 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1524 # Some installations of libedit usurp /usr/include/readline/, which seems
1525 # bad practice, since in combined installations readline will have its headers
1526 # there. We might have to resort to AC_EGREP checks to make sure we found
1527 # the proper header...
1528 AC_CHECK_HEADERS(editline/readline.h, [],
1529 [AC_CHECK_HEADERS(readline.h, [],
1530 [AC_CHECK_HEADERS(readline/readline.h, [],
1531 [AC_MSG_ERROR([readline header not found
1532 If you have libedit already installed, see config.log for details on the
1533 failure. It is possible the compiler isn't looking in the proper directory.
1534 Use --without-readline to disable libedit support.])])])])
1535 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1536 # not be there at all. Hence, don't complain if not found. We must check
1537 # though, since in yet other versions it is an independent header.
1538 AC_CHECK_HEADERS(editline/history.h, [],
1539 [AC_CHECK_HEADERS(history.h, [],
1540 [AC_CHECK_HEADERS(readline/history.h)])])
1543 if test "$with_zlib" = yes; then
1544 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1545 If you have zlib already installed, see config.log for details on the
1546 failure. It is possible the compiler isn't looking in the proper directory.
1547 Use --without-zlib to disable zlib support.])])
1550 PGAC_PATH_PROGS(LZ4, lz4)
1551 if test "$with_lz4" = yes; then
1552 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1555 PGAC_PATH_PROGS(ZSTD, zstd)
1556 if test "$with_zstd" = yes; then
1557 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1560 if test "$with_gssapi" = yes ; then
1561 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1562 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1565 if test "$with_ssl" = openssl ; then
1566 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1567 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1570 if test "$with_pam" = yes ; then
1571 AC_CHECK_HEADERS(security/pam_appl.h, [],
1572 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1573 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1576 if test "$with_bsd_auth" = yes ; then
1577 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1580 if test "$with_systemd" = yes ; then
1581 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1584 if test "$with_libxml" = yes ; then
1585 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1588 if test "$with_libxslt" = yes ; then
1589 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1592 if test "$with_ldap" = yes ; then
1593 if test "$PORTNAME" != "win32"; then
1594 AC_CHECK_HEADERS(ldap.h, [],
1595 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1598 AC_CHECK_HEADERS(winldap.h, [],
1599 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1600 [AC_INCLUDES_DEFAULT
1601 #include <windows.h>
1606 if test "$with_bonjour" = yes ; then
1607 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1608 dnl At some point we might add something like
1609 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1610 dnl but right now, what that would mainly accomplish is to encourage
1611 dnl people to try to use the avahi implementation, which does not work.
1612 dnl If you want to use Apple's own Bonjour code on another platform,
1613 dnl just add -ldns_sd to LIBS manually.
1616 # for contrib/uuid-ossp
1617 if test "$with_uuid" = bsd ; then
1618 AC_CHECK_HEADERS(uuid.h,
1619 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1620 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1621 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1622 elif test "$with_uuid" = e2fs ; then
1623 AC_CHECK_HEADERS(uuid/uuid.h,
1624 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1625 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1626 [AC_CHECK_HEADERS(uuid.h,
1627 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1628 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1629 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1630 elif test "$with_uuid" = ossp ; then
1631 AC_CHECK_HEADERS(ossp/uuid.h,
1632 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1633 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1634 [AC_CHECK_HEADERS(uuid.h,
1635 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1636 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1637 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1640 if test "$PORTNAME" = "win32" ; then
1641 AC_CHECK_HEADERS(crtdefs.h)
1645 ## Types, structures, compiler characteristics
1648 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1651 PGAC_PRINTF_ARCHETYPE
1652 PGAC_C_FUNCNAME_SUPPORT
1653 PGAC_C_STATIC_ASSERT
1655 PGAC_C_TYPES_COMPATIBLE
1656 PGAC_C_BUILTIN_CONSTANT_P
1657 PGAC_C_BUILTIN_UNREACHABLE
1658 PGAC_C_COMPUTED_GOTO
1659 PGAC_STRUCT_TIMEZONE
1661 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1662 PGAC_STRUCT_SOCKADDR_UN
1663 PGAC_STRUCT_SOCKADDR_STORAGE
1664 PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS
1665 PGAC_STRUCT_ADDRINFO
1669 # MSVC doesn't cope well with defining restrict to __restrict, the
1670 # spelling it understands, because it conflicts with
1671 # __declspec(restrict). Therefore we define pg_restrict to the
1672 # appropriate definition, which presumably won't conflict.
1674 # Allow platforms with buggy compilers to force restrict to not be
1675 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1678 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1681 pg_restrict="$ac_cv_c_restrict"
1683 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1684 [Define to keyword to use for C99 restrict support, or to nothing if not
1687 AC_CHECK_TYPES([struct cmsgcred], [], [],
1688 [#include <sys/socket.h>
1689 #include <sys/param.h>
1690 #ifdef HAVE_SYS_UCRED_H
1691 #include <sys/ucred.h>
1694 AC_CHECK_TYPES([struct option], [], [],
1695 [#ifdef HAVE_GETOPT_H
1699 if test "$with_zlib" = yes; then
1700 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1701 # did not). While we could work around the lack of z_streamp, it
1702 # seems unwise to encourage people to use such old zlib versions...
1703 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1704 Use --without-zlib to disable zlib support.])],
1705 [#include <zlib.h>])
1710 # On x86_64, check if we can compile a popcntq instruction
1711 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1712 [pgac_cv_have_x86_64_popcntq],
1713 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1714 [long long x = 1; long long r;
1715 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1716 [pgac_cv_have_x86_64_popcntq=yes],
1717 [pgac_cv_have_x86_64_popcntq=no])])
1718 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1719 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1723 # On PPC, check if assembler supports LWARX instruction's mutex hint bit
1724 AC_CACHE_CHECK([whether assembler supports lwarx hint bit],
1725 [pgac_cv_have_ppc_mutex_hint],
1726 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1727 [int a = 0; int *p = &a; int r;
1728 __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));])],
1729 [pgac_cv_have_ppc_mutex_hint=yes],
1730 [pgac_cv_have_ppc_mutex_hint=no])])
1731 if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then
1732 AC_DEFINE(HAVE_PPC_LWARX_MUTEX_HINT, 1, [Define to 1 if the assembler supports PPC's LWARX mutex hint bit.])
1734 # Check if compiler accepts "i"(x) when __builtin_constant_p(x).
1735 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1736 [pgac_cv_have_i_constraint__builtin_constant_p],
1737 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1739 addi(int ra, int si)
1742 if (__builtin_constant_p(si))
1743 __asm__ __volatile__(
1744 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1747 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1748 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1749 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1750 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1751 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1752 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1757 # Check largefile support. You might think this is a system service not a
1758 # compiler characteristic, but you'd be wrong. We must check this before
1759 # probing existence of related functions such as fseeko, since the largefile
1760 # defines can affect what is generated for that.
1761 if test "$PORTNAME" != "win32"; then
1763 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1764 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1765 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1766 dnl versions where the feature actually works, it's on by default anyway.
1767 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1770 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1771 AC_CHECK_SIZEOF([off_t])
1773 # If we don't have largefile support, can't handle segsize >= 2GB.
1774 if test "$ac_cv_sizeof_off_t" -lt 8 -a "$segsize" != "1"; then
1775 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1778 AC_CHECK_SIZEOF([bool], [],
1779 [#ifdef HAVE_STDBOOL_H
1780 #include <stdbool.h>
1783 dnl We use <stdbool.h> if we have it and it declares type bool as having
1784 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1785 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1786 AC_DEFINE([PG_USE_STDBOOL], 1,
1787 [Define to 1 to use <stdbool.h> to define type bool.])
1792 ## Functions, global variables
1795 PGAC_VAR_INT_TIMEZONE
1796 PGAC_FUNC_GETTIMEOFDAY_1ARG
1797 PGAC_FUNC_WCSTOMBS_L
1799 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1800 # symbols that that library has no business exposing to the world. Pending
1801 # acquisition of a clue by those developers, ignore libedit (including its
1802 # possible alias of libreadline) while checking for everything else.
1803 LIBS_including_readline="$LIBS"
1804 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1806 AC_CHECK_FUNCS(m4_normalize([
1822 pthread_is_threaded_np
1839 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1840 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1841 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1842 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1843 # We assume that we needn't test all widths of these explicitly:
1844 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1845 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1846 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1847 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1848 # so it needs a different test function.
1849 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1851 # We require 64-bit fseeko() to be available, but run this check anyway
1852 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1855 # Make sure there's a declaration for sigwait(), then make sure
1856 # that it conforms to the POSIX standard (there seem to still be
1857 # some platforms out there with pre-POSIX sigwait()). On Solaris,
1858 # _POSIX_PTHREAD_SEMANTICS affects the result, but we already
1859 # added that to CPPFLAGS.
1860 AC_CHECK_DECLS(sigwait, [], [], [#include <signal.h>])
1861 if test "x$ac_cv_have_decl_sigwait" = xyes; then
1862 AC_CACHE_CHECK([for POSIX-conforming sigwait declaration],
1863 [pgac_cv_have_posix_decl_sigwait],
1864 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1866 int sigwait(const sigset_t *set, int *sig);
1869 [pgac_cv_have_posix_decl_sigwait=yes],
1870 [pgac_cv_have_posix_decl_sigwait=no])])
1872 if test "x$pgac_cv_have_posix_decl_sigwait" = xyes; then
1873 AC_DEFINE(HAVE_POSIX_DECL_SIGWAIT, 1,
1874 [Define to 1 if you have a POSIX-conforming sigwait declaration.])
1876 # On non-Windows, libpq requires POSIX sigwait() for thread safety.
1877 if test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"; then
1878 AC_MSG_ERROR([POSIX-conforming sigwait is required to enable thread safety.])
1882 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1883 # by calling it, 2009-04-02
1884 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1885 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1886 AS_IF([test "$PORTNAME" != "solaris"], [
1887 AC_CHECK_FUNCS(posix_fadvise)
1888 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1891 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1892 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1894 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1895 # won't handle deployment target restrictions on macOS
1896 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1897 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1899 # This is probably only present on macOS, but may as well check always
1900 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1902 AC_CHECK_DECLS([RTLD_GLOBAL, RTLD_NOW], [], [], [#include <dlfcn.h>])
1904 AC_CHECK_TYPE([struct sockaddr_in6],
1905 [AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if you have support for IPv6.])],
1907 [$ac_includes_default
1908 #include <netinet/in.h>])
1910 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1911 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1912 [#include <machine/vmparam.h>
1913 #include <sys/exec.h>
1915 [PS_STRINGS->ps_nargvstr = 1;
1916 PS_STRINGS->ps_argvstr = "foo";])],
1917 [pgac_cv_var_PS_STRINGS=yes],
1918 [pgac_cv_var_PS_STRINGS=no])])
1919 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1920 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1923 AC_REPLACE_FUNCS(m4_normalize([
1941 if test "$enable_thread_safety" = yes; then
1942 AC_REPLACE_FUNCS(pthread_barrier_wait)
1945 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1946 # Cygwin and (apparently, based on test results) Mingw both
1947 # have a broken strtof(), so substitute the same replacement
1948 # code we use with VS2013. That's not a perfect fix, since
1949 # (unlike with VS2013) it doesn't avoid double-rounding, but
1950 # we have no better options. To get that, though, we have to
1951 # force the file to be compiled despite HAVE_STRTOF.
1953 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1957 # Windows uses a specialised env handler
1959 AC_DEFINE(HAVE_SETENV, 1, [Define to 1 because replacement version used.])
1960 AC_DEFINE(HAVE_UNSETENV, 1, [Define to 1 because replacement version used.])
1961 ac_cv_func_setenv=yes
1962 ac_cv_func_unsetenv=yes
1965 AC_REPLACE_FUNCS([setenv unsetenv])
1969 # System's version of getaddrinfo(), if any, may be used only if we found
1970 # a definition for struct addrinfo; see notes in src/include/getaddrinfo.h.
1971 # We use only our own getaddrinfo.c on Windows, but it's time to revisit that.
1972 if test x"$ac_cv_type_struct_addrinfo" = xyes && \
1973 test "$PORTNAME" != "win32"; then
1974 AC_REPLACE_FUNCS([getaddrinfo])
1976 AC_LIBOBJ(getaddrinfo)
1979 # Similarly, use system's getopt_long() only if system provides struct option.
1980 if test x"$ac_cv_type_struct_option" = xyes ; then
1981 AC_REPLACE_FUNCS([getopt_long])
1983 AC_LIBOBJ(getopt_long)
1986 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1987 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1988 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1992 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1993 # so always use our version on Windows.
1994 if test "$PORTNAME" = "win32"; then
1996 AC_LIBOBJ(getopt_long)
1999 # Win32 (really MinGW) support
2000 if test "$PORTNAME" = "win32"; then
2001 AC_CHECK_FUNCS(_configthreadlocale)
2002 AC_REPLACE_FUNCS(gettimeofday)
2007 AC_LIBOBJ(win32common)
2009 AC_LIBOBJ(win32error)
2010 AC_LIBOBJ(win32ntdll)
2011 AC_LIBOBJ(win32security)
2012 AC_LIBOBJ(win32setlocale)
2013 AC_LIBOBJ(win32stat)
2014 AC_DEFINE([HAVE_SYMLINK], 1,
2015 [Define to 1 if you have the `symlink' function.])
2016 AC_CHECK_TYPES(MINIDUMP_TYPE, [pgac_minidump_type=yes], [pgac_minidump_type=no], [
2017 #define WIN32_LEAN_AND_MEAN
2018 #include <windows.h>
2020 #include <dbghelp.h>])
2022 if test x"$pgac_minidump_type" = x"yes" ; then
2023 AC_SUBST(have_win32_dbghelp,yes)
2025 AC_SUBST(have_win32_dbghelp,no)
2028 # Cygwin needs only a bit of that
2029 if test "$PORTNAME" = "cygwin"; then
2033 AC_CHECK_FUNC(syslog,
2034 [AC_CHECK_HEADER(syslog.h,
2035 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
2037 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
2038 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
2039 [extern int opterr; opterr = 1;])],
2040 [pgac_cv_var_int_opterr=yes],
2041 [pgac_cv_var_int_opterr=no])])
2042 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
2043 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
2046 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
2047 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
2048 [extern int optreset; optreset = 1;])],
2049 [pgac_cv_var_int_optreset=yes],
2050 [pgac_cv_var_int_optreset=no])])
2051 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
2052 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
2055 AC_CHECK_FUNCS([strtoll __strtoll strtoq], [break])
2056 AC_CHECK_FUNCS([strtoull __strtoull strtouq], [break])
2057 # strto[u]ll may exist but not be declared
2058 AC_CHECK_DECLS([strtoll, strtoull])
2060 if test "$with_icu" = yes; then
2061 ac_save_CPPFLAGS=$CPPFLAGS
2062 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
2064 # Verify we have ICU's header files
2065 AC_CHECK_HEADER(unicode/ucol.h, [],
2066 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
2068 CPPFLAGS=$ac_save_CPPFLAGS
2071 if test "$with_llvm" = yes; then
2072 PGAC_CHECK_LLVM_FUNCTIONS()
2075 # Lastly, restore full LIBS list and check for readline/libedit symbols
2076 LIBS="$LIBS_including_readline"
2078 if test "$with_readline" = yes; then
2079 PGAC_READLINE_VARIABLES
2080 AC_CHECK_FUNCS(m4_normalize([
2082 history_truncate_file
2083 rl_completion_matches
2084 rl_filename_completion_function
2085 rl_reset_screen_size
2091 # This test makes sure that run tests work at all. Sometimes a shared
2092 # library is found by the linker, but the runtime linker can't find it.
2093 # This check should come after all modifications of compiler or linker
2094 # variables, and before any other run tests.
2095 AC_MSG_CHECKING([test program])
2096 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
2097 [AC_MSG_RESULT(ok)],
2098 [AC_MSG_RESULT(failed)
2100 Could not execute a simple test program. This may be a problem
2101 related to locating shared libraries. Check the file 'config.log'
2102 for the exact reason.]])],
2103 [AC_MSG_RESULT([cross-compiling])])
2105 # --------------------
2106 # Run tests below here
2107 # --------------------
2109 dnl Check to see if we have a working 64-bit integer type.
2110 dnl Since Postgres 8.4, we no longer support compilers without a working
2111 dnl 64-bit type; but we have to determine whether that type is called
2112 dnl "long int" or "long long int".
2114 PGAC_TYPE_64BIT_INT([long int])
2116 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
2117 pg_int64_type="long int"
2119 PGAC_TYPE_64BIT_INT([long long int])
2120 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2121 pg_int64_type="long long int"
2123 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
2127 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
2128 [Define to the name of a signed 64-bit integer type.])
2130 # Select the printf length modifier that goes with that, too.
2131 if test x"$pg_int64_type" = x"long long int" ; then
2132 INT64_MODIFIER='"ll"'
2134 INT64_MODIFIER='"l"'
2137 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2138 [Define to the appropriate printf length modifier for 64-bit ints.])
2140 # has to be down here, rather than with the other builtins, because
2141 # the test uses PG_INT64_TYPE.
2142 PGAC_C_BUILTIN_OP_OVERFLOW
2144 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2145 AC_CHECK_SIZEOF([void *])
2146 AC_CHECK_SIZEOF([size_t])
2147 AC_CHECK_SIZEOF([long])
2149 # Determine memory alignment requirements for the basic C data types.
2151 AC_CHECK_ALIGNOF(short)
2152 AC_CHECK_ALIGNOF(int)
2153 AC_CHECK_ALIGNOF(long)
2154 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2155 AC_CHECK_ALIGNOF(long long int)
2157 AC_CHECK_ALIGNOF(double)
2159 # Compute maximum alignment of any basic type.
2160 # We assume long's alignment is at least as strong as char, short, or int;
2161 # but we must check long long (if it is being used for int64) and double.
2162 # Note that we intentionally do not consider any types wider than 64 bits,
2163 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2164 # for disk and memory space.
2166 MAX_ALIGNOF=$ac_cv_alignof_long
2167 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2168 MAX_ALIGNOF=$ac_cv_alignof_double
2170 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2171 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2173 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2176 # Some platforms predefine the types int8, int16, etc. Only check
2177 # a (hopefully) representative subset.
2178 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2179 [#include <stdio.h>])
2181 # Some compilers offer a 128-bit integer scalar type.
2182 PGAC_TYPE_128BIT_INT
2184 # Check for various atomic operations now that we have checked how to declare
2186 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2187 PGAC_HAVE_GCC__SYNC_INT32_TAS
2188 PGAC_HAVE_GCC__SYNC_INT32_CAS
2189 PGAC_HAVE_GCC__SYNC_INT64_CAS
2190 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2191 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2194 # Check for x86 cpuid instruction
2195 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2196 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2197 [[unsigned int exx[4] = {0, 0, 0, 0};
2198 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2200 [pgac_cv__get_cpuid="yes"],
2201 [pgac_cv__get_cpuid="no"])])
2202 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2203 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2206 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2207 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2208 [[unsigned int exx[4] = {0, 0, 0, 0};
2209 __get_cpuid(exx[0], 1);
2211 [pgac_cv__cpuid="yes"],
2212 [pgac_cv__cpuid="no"])])
2213 if test x"$pgac_cv__cpuid" = x"yes"; then
2214 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2217 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2219 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2220 # with the default compiler flags. If not, check if adding the -msse4.2
2221 # flag helps. CFLAGS_SSE42 is set to -msse4.2 if that's required.
2222 PGAC_SSE42_CRC32_INTRINSICS([])
2223 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2224 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2226 AC_SUBST(CFLAGS_SSE42)
2228 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2229 # define __SSE4_2__ in that case.
2230 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2232 #error __SSE4_2__ not defined
2234 ])], [SSE4_2_TARGETED=1])
2236 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2238 # First check if __crc32c* intrinsics can be used with the default compiler
2239 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2240 # CFLAGS_ARMV8_CRC32C is set if the extra flag is required.
2241 PGAC_ARMV8_CRC32C_INTRINSICS([])
2242 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2243 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2245 AC_SUBST(CFLAGS_ARMV8_CRC32C)
2247 # Select CRC-32C implementation.
2249 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2250 # use the special CRC instructions for calculating CRC-32C. If we're not
2251 # targeting such a processor, but we can nevertheless produce code that uses
2252 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2253 # implementations and select which one to use at runtime, depending on whether
2254 # SSE 4.2 is supported by the processor we're running on.
2256 # Similarly, if we are targeting an ARM processor that has the CRC
2257 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2258 # we're not targeting such a processor, but can nevertheless produce code that
2259 # uses the CRC instructions, compile both, and select at runtime.
2261 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2262 # in the template or configure command line.
2263 if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_ARMV8_CRC32C" = x"" && test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x""; then
2264 # Use Intel SSE 4.2 if available.
2265 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2268 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2269 # the runtime check.
2270 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2271 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2273 # Use ARM CRC Extension if available.
2274 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_ARMV8_CRC32C" = x""; then
2277 # ARM CRC Extension, with runtime check?
2278 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2279 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2281 # fall back to slicing-by-8 algorithm, which doesn't require any
2282 # special CPU support.
2283 USE_SLICING_BY_8_CRC32C=1
2290 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2291 AC_MSG_CHECKING([which CRC-32C implementation to use])
2292 if test x"$USE_SSE42_CRC32C" = x"1"; then
2293 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2294 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2295 AC_MSG_RESULT(SSE 4.2)
2297 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2298 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2299 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2300 AC_MSG_RESULT(SSE 4.2 with runtime check)
2302 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2303 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2304 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2305 AC_MSG_RESULT(ARMv8 CRC instructions)
2307 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2308 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2309 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2310 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2312 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2313 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2314 AC_MSG_RESULT(slicing-by-8)
2319 AC_SUBST(PG_CRC32C_OBJS)
2322 # Select semaphore implementation type.
2323 if test "$PORTNAME" != "win32"; then
2324 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2325 # Need sem_open for this
2326 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2328 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2329 # Need sem_init for this
2330 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2332 AC_MSG_CHECKING([which semaphore API to use])
2333 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2334 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2335 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2336 sematype="named POSIX"
2338 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2339 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2340 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2341 sematype="unnamed POSIX"
2343 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2344 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2348 AC_MSG_RESULT([$sematype])
2350 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2351 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2355 # Select shared-memory implementation type.
2356 if test "$PORTNAME" != "win32"; then
2357 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2358 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2360 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2361 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2364 # Select random number source. If a TLS library is used then it will be the
2365 # first choice, else the native platform sources (Windows API or /dev/urandom)
2367 AC_MSG_CHECKING([which random number source to use])
2368 if test x"$with_ssl" = x"openssl" ; then
2369 AC_MSG_RESULT([OpenSSL])
2370 elif test x"$PORTNAME" = x"win32" ; then
2371 AC_MSG_RESULT([Windows native])
2372 elif test x"$cross_compiling" = x"yes"; then
2373 AC_MSG_RESULT([assuming /dev/urandom])
2375 AC_MSG_RESULT([/dev/urandom])
2376 AC_CHECK_FILE([/dev/urandom], [], [])
2378 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2380 no source of strong random numbers was found
2381 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2385 # If not set in template file, set bytes to use libc memset()
2386 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2387 MEMSET_LOOP_LIMIT=1024
2389 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2392 if test "$enable_nls" = yes ; then
2396 # Check for Tcl configuration script tclConfig.sh
2397 if test "$with_tcl" = yes; then
2398 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2399 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2400 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2401 AC_SUBST(TCL_SHLIB_LD_LIBS)dnl don't want to double-evaluate that one
2402 if test "$TCL_SHARED_BUILD" != 1; then
2403 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2404 Use --without-tcl to disable building PL/Tcl.])
2406 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2407 ac_save_CPPFLAGS=$CPPFLAGS
2408 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2409 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2410 CPPFLAGS=$ac_save_CPPFLAGS
2413 # check for <perl.h>
2414 if test "$with_perl" = yes; then
2415 ac_save_CPPFLAGS=$CPPFLAGS
2416 CPPFLAGS="$CPPFLAGS $perl_includespec"
2417 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2418 [#include <EXTERN.h>])
2419 # While we're at it, check that we can link to libperl.
2420 # On most platforms, if perl.h is there then libperl.so will be too, but at
2421 # this writing Debian packages them separately. There is no known reason to
2422 # waste cycles on separate probes for the Tcl or Python libraries, though.
2423 # On some Red Hat platforms, the link attempt can fail if we don't use
2424 # CFLAGS_SL while building the test program.
2425 ac_save_CFLAGS=$CFLAGS
2426 CFLAGS="$CFLAGS $CFLAGS_SL"
2427 pgac_save_LIBS=$LIBS
2428 LIBS="$perl_embed_ldflags"
2429 AC_MSG_CHECKING([for libperl])
2430 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2433 ], [perl_alloc();])],
2434 [AC_MSG_RESULT(yes)],
2436 AC_MSG_ERROR([libperl library is required for Perl])])
2437 LIBS=$pgac_save_LIBS
2438 CFLAGS=$ac_save_CFLAGS
2439 CPPFLAGS=$ac_save_CPPFLAGS
2442 # check for <Python.h>
2443 if test "$with_python" = yes; then
2444 ac_save_CPPFLAGS=$CPPFLAGS
2445 CPPFLAGS="$python_includespec $CPPFLAGS"
2446 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2447 CPPFLAGS=$ac_save_CPPFLAGS
2451 # Check for documentation-building tools
2453 PGAC_PATH_PROGS(XMLLINT, xmllint)
2454 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2455 PGAC_PATH_PROGS(FOP, fop)
2456 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2459 # Check for test tools
2461 if test "$enable_tap_tests" = yes; then
2462 # Make sure we know where prove is.
2463 PGAC_PATH_PROGS(PROVE, prove)
2464 if test -z "$PROVE"; then
2465 AC_MSG_ERROR([prove not found])
2467 # Check for necessary Perl modules. You might think we should use
2468 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2469 # installation than perl, eg on MSys, so we have to check using prove.
2470 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2471 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2472 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2473 if test $? -eq 0; then
2474 # log the module version details, but don't show them interactively
2475 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2478 # on failure, though, show the results to the user
2479 AC_MSG_RESULT([$modulestderr])
2480 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2484 # If compiler will take -Wl,--as-needed (or various platform-specific
2485 # spellings thereof) then add that to LDFLAGS. This is much easier than
2486 # trying to filter LIBS to the minimum for each executable.
2487 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2488 # libreadline; therefore we postpone testing it until we know what library
2489 # dependencies readline has. The test code will try to link with $LIBS.
2490 if test "$with_readline" = yes; then
2491 link_test_func=readline
2496 if test "$PORTNAME" = "darwin"; then
2497 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2498 elif test "$PORTNAME" = "openbsd"; then
2499 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2501 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2504 # Create compiler version string
2505 if test x"$GCC" = x"yes" ; then
2506 cc_string=`${CC} --version | sed q`
2507 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2508 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2509 cc_string=`${CC} -V 2>&1 | sed q`
2514 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2515 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2516 [A string containing the version number, platform, and C compiler])
2518 # Supply a numeric version string for use by 3rd party add-ons
2519 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2520 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2521 $AWK '{printf "%d%04d", $1, $2}'`"]
2522 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2523 AC_SUBST(PG_VERSION_NUM)
2525 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2526 # literally, so that it's possible to override it at build time using
2527 # a command like "make ... PG_SYSROOT=path". This has to be done after
2528 # we've finished all configure checks that depend on CPPFLAGS.
2529 # The same for LDFLAGS, too.
2530 if test x"$PG_SYSROOT" != x; then
2531 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2532 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2534 AC_SUBST(PG_SYSROOT)
2537 # Begin output steps
2539 AC_MSG_NOTICE([using compiler=$cc_string])
2540 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2541 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2542 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2543 # Currently only used when LLVM is used
2544 if test "$with_llvm" = yes ; then
2545 AC_MSG_NOTICE([using CXX=$CXX])
2546 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2547 AC_MSG_NOTICE([using CLANG=$CLANG])
2548 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2549 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2552 # prepare build tree if outside source tree
2553 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2554 # Note 2: /bin/pwd might be better than shell's built-in at getting
2555 # a symlink-free name.
2556 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2560 if test "$no_create" != yes; then
2561 _AS_ECHO_N([preparing build tree... ])
2562 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2563 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2564 || AC_MSG_ERROR(failed)
2568 AC_SUBST(vpath_build)
2571 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2574 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2575 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2576 src/include/pg_config_os.h:src/include/port/${template}.h
2577 src/Makefile.port:src/makefiles/Makefile.${template}
2580 if test "$PORTNAME" = "win32"; then
2581 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2582 # Links sometimes fail undetected on Mingw -
2583 # so here we detect it and warn the user
2584 for FILE in $CONFIG_LINKS
2586 # test -e works for symlinks in the MinGW console
2587 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2592 AC_CONFIG_HEADERS([src/include/pg_config.h],
2594 # Update timestamp for pg_config.h (see Makefile.global)
2595 echo >src/include/stamp-h
2598 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2600 # Update timestamp for pg_config_ext.h (see Makefile.global)
2601 echo >src/include/stamp-ext-h
2604 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2605 [echo >src/interfaces/ecpg/include/stamp-h])