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], [16devel], [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(['$withval' is not a valid template name. Use 'list' for a list.])
62 # --with-template not given
66 cygwin*|msys*) template=cygwin ;;
67 darwin*) template=darwin ;;
68 dragonfly*) template=netbsd ;;
69 freebsd*) template=freebsd ;;
70 linux*|gnu*|k*bsd*-gnu)
72 mingw*) template=win32 ;;
73 netbsd*) template=netbsd ;;
74 openbsd*) template=openbsd ;;
75 solaris*) template=solaris ;;
78 if test x"$template" = x"" ; then
80 *******************************************************************
81 PostgreSQL has apparently not been ported to your platform yet.
82 To try a manual configuration, look into the src/template directory
83 for a similar platform and use the '--with-template=' option.
85 Please also contact <]AC_PACKAGE_BUGREPORT[> to see about
86 rectifying this. Include the above 'checking host system type...'
88 *******************************************************************
94 AC_MSG_RESULT([$template])
99 # Initialize default assumption that we do not need separate assembly code
100 # for TAS (test-and-set). This can be overridden by the template file
101 # when it's executed.
105 # Default, works for most platforms, override in template file if needed
111 ## Command line options
115 # Add non-standard directories to the include path
117 PGAC_ARG_REQ(with, includes, [DIRS], [look for additional header files in DIRS])
121 # Add non-standard directories to the library search path
123 PGAC_ARG_REQ(with, libraries, [DIRS], [look for additional libraries in DIRS],
124 [LIBRARY_DIRS=$withval])
126 PGAC_ARG_REQ(with, libs, [DIRS], [alternative spelling of --with-libraries],
127 [LIBRARY_DIRS=$withval])
131 # 64-bit integer date/time storage is now the only option, but to avoid
132 # unnecessary breakage of build scripts, continue to accept an explicit
133 # "--enable-integer-datetimes" switch.
135 PGAC_ARG_BOOL(enable, integer-datetimes, yes, [obsolete option, no longer supported],
137 [AC_MSG_ERROR([--disable-integer-datetimes is no longer supported])])
143 AC_MSG_CHECKING([whether NLS is wanted])
144 PGAC_ARG_OPTARG(enable, nls,
145 [LANGUAGES], [enable Native Language Support],
147 [WANTED_LANGUAGES=$enableval],
148 [AC_DEFINE(ENABLE_NLS, 1,
149 [Define to 1 if you want National Language Support. (--enable-nls)])])
150 AC_MSG_RESULT([$enable_nls])
152 AC_SUBST(WANTED_LANGUAGES)
155 # Default port number (--with-pgport), default 5432
157 AC_MSG_CHECKING([for default port number])
158 PGAC_ARG_REQ(with, pgport, [PORTNUM], [set default port number [5432]],
159 [default_port=$withval],
161 AC_MSG_RESULT([$default_port])
162 # Need both of these because some places want an integer and some a string
163 AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},
164 [Define to the default TCP port number on which the server listens and
165 to which clients will try to connect. This can be overridden at run-time,
166 but it's convenient if your clients have the right default compiled in.
167 (--with-pgport=PORTNUM)])
168 AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",
169 [Define to the default TCP port number as a string constant.])
170 AC_SUBST(default_port)
172 # It's worth validating port; you can get very confusing errors otherwise
173 if test x"$default_port" = x""; then
174 AC_MSG_ERROR([invalid --with-pgport specification: empty string])
175 elif test ! x`echo "$default_port" | sed -e 's/[[0-9]]*//'` = x""; then
176 AC_MSG_ERROR([invalid --with-pgport specification: must be a number])
177 elif test ! x`echo "$default_port" | sed -e 's/^0.//'` = x"$default_port"; then
178 AC_MSG_ERROR([invalid --with-pgport specification: must not have leading 0])
179 elif test "$default_port" -lt "1" -o "$default_port" -gt "65535"; then
180 AC_MSG_ERROR([invalid --with-pgport specification: must be between 1 and 65535])
184 # '-rpath'-like feature can be disabled
186 PGAC_ARG_BOOL(enable, rpath, yes,
187 [do not embed shared library search path in executables])
188 AC_SUBST(enable_rpath)
193 PGAC_ARG_BOOL(enable, spinlocks, yes,
194 [do not use spinlocks])
199 PGAC_ARG_BOOL(enable, atomics, yes,
200 [do not use atomic operations])
203 # --enable-debug adds -g to compiler flags
205 PGAC_ARG_BOOL(enable, debug, no,
206 [build with debugging symbols (-g)])
207 AC_SUBST(enable_debug)
210 # --enable-profiling enables gcc profiling
212 PGAC_ARG_BOOL(enable, profiling, no,
213 [build with profiling enabled ])
216 # --enable-coverage enables generation of code coverage metrics with gcov
218 PGAC_ARG_BOOL(enable, coverage, no,
219 [build with coverage testing instrumentation],
220 [PGAC_PATH_PROGS(GCOV, gcov)
221 if test -z "$GCOV"; then
222 AC_MSG_ERROR([gcov not found])
224 PGAC_PATH_PROGS(LCOV, lcov)
225 if test -z "$LCOV"; then
226 AC_MSG_ERROR([lcov not found])
228 PGAC_PATH_PROGS(GENHTML, genhtml)
229 if test -z "$GENHTML"; then
230 AC_MSG_ERROR([genhtml not found])
232 AC_SUBST(enable_coverage)
237 PGAC_ARG_BOOL(enable, dtrace, no,
238 [build with DTrace support],
239 [PGAC_PATH_PROGS(DTRACE, dtrace)
240 if test -z "$DTRACE"; then
241 AC_MSG_ERROR([dtrace not found])
243 AC_SUBST(DTRACEFLAGS)])
244 AC_SUBST(enable_dtrace)
249 PGAC_ARG_BOOL(enable, tap-tests, no,
250 [enable TAP tests (requires Perl and IPC::Run)])
251 AC_SUBST(enable_tap_tests)
256 AC_MSG_CHECKING([for block size])
257 PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],
258 [blocksize=$withval],
267 *) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])
269 AC_MSG_RESULT([${blocksize}kB])
271 AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [
272 Size of a disk block --- this also limits the size of a tuple. You
273 can set it bigger if you need bigger tuples (although TOAST should
274 reduce the need to have large tuples, since fields can be spread
275 across multiple tuples).
277 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
278 is currently 2^15 (32768). This is determined by the 15-bit widths
279 of the lp_off and lp_len fields in ItemIdData (see
280 include/storage/itemid.h).
282 Changing BLCKSZ requires an initdb.
286 # Relation segment size
288 AC_MSG_CHECKING([for segment size])
289 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
292 # this expression is set up to avoid unnecessary integer overflow
293 # blocksize is already guaranteed to be a factor of 1024
294 RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`
295 test $? -eq 0 || exit 1
296 AC_MSG_RESULT([${segsize}GB])
298 AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [
299 RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
300 Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
301 relations bigger than that are divided into multiple files.
303 RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.
304 This is often 2 GB or 4GB in a 32-bit operating system, unless you
305 have large file support enabled. By default, we make the limit 1 GB
306 to avoid any possible integer-overflow problems within the OS.
307 A limit smaller than necessary only means we divide a large
308 relation into more chunks than necessary, so it seems best to err
309 in the direction of a small limit.
311 A power-of-2 value is recommended to save a few cycles in md.c,
312 but is not absolutely required.
314 Changing RELSEG_SIZE requires an initdb.
320 AC_MSG_CHECKING([for WAL block size])
321 PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],
322 [wal_blocksize=$withval],
324 case ${wal_blocksize} in
325 1) XLOG_BLCKSZ=1024;;
326 2) XLOG_BLCKSZ=2048;;
327 4) XLOG_BLCKSZ=4096;;
328 8) XLOG_BLCKSZ=8192;;
329 16) XLOG_BLCKSZ=16384;;
330 32) XLOG_BLCKSZ=32768;;
331 64) XLOG_BLCKSZ=65536;;
332 *) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])
334 AC_MSG_RESULT([${wal_blocksize}kB])
336 AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [
337 Size of a WAL file block. This need have no particular relation to BLCKSZ.
338 XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
339 XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
340 buffers, else direct I/O may fail.
342 Changing XLOG_BLCKSZ requires an initdb.
349 # For historical reasons you can also use --with-CC to specify the C compiler
350 # to use, although the standard way to do this is to set the CC environment
352 PGAC_ARG_REQ(with, CC, [CMD], [set compiler (deprecated)], [CC=$with_CC])
355 aix) pgac_cc_list="gcc xlc"; pgac_cxx_list="g++ xlC";;
356 *) pgac_cc_list="gcc cc"; pgac_cxx_list="g++ c++";;
359 AC_PROG_CC([$pgac_cc_list])
362 # Error out if the compiler does not support C99, as the codebase
364 if test "$ac_cv_prog_cc_c99" = no; then
365 AC_MSG_ERROR([C compiler "$CC" does not support C99])
368 AC_PROG_CXX([$pgac_cxx_list])
370 # Check if it's Intel's compiler, which (usually) pretends to be gcc,
371 # but has idiosyncrasies of its own. We assume icc will define
372 # __INTEL_COMPILER regardless of CFLAGS.
373 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
375 @%:@endif])], [ICC=yes], [ICC=no])
377 # Check if it's Sun Studio compiler. We assume that
378 # __SUNPRO_C will be defined for Sun Studio compilers
379 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
381 @%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
383 AC_SUBST(SUN_STUDIO_CC)
389 # Checked early because subsequent tests depend on it.
390 PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],
391 [AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])
393 dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions
394 AS_IF([test "$with_llvm" = yes], [
405 . "$srcdir/src/template/$template" || exit
407 # C[XX]FLAGS are selected so:
408 # If the user specifies something in the environment, that is used.
409 # else: If the template file set something, that is used.
410 # else: If coverage was enabled, don't set anything.
411 # else: If the compiler is GCC, then we use -O2.
412 # else: If the compiler is something else, then we use -O, unless debugging.
414 if test "$ac_env_CFLAGS_set" = set; then
415 CFLAGS=$ac_env_CFLAGS_value
416 elif test "${CFLAGS+set}" = set; then
417 : # (keep what template set)
418 elif test "$enable_coverage" = yes; then
419 : # no optimization by default
420 elif test "$GCC" = yes; then
423 # if the user selected debug mode, don't use -O
424 if test "$enable_debug" != yes; then
429 if test "$ac_env_CXXFLAGS_set" = set; then
430 CXXFLAGS=$ac_env_CXXFLAGS_value
431 elif test "${CXXFLAGS+set}" = set; then
432 : # (keep what template set)
433 elif test "$enable_coverage" = yes; then
434 : # no optimization by default
435 elif test "$GCC" = yes; then
438 # if the user selected debug mode, don't use -O
439 if test "$enable_debug" != yes; then
444 # When generating bitcode (for inlining) we always want to use -O2
445 # even when --enable-debug is specified. The bitcode is not going to
446 # be used for line-by-line debugging, and JIT inlining doesn't work
447 # without at least -O1 (otherwise clang will emit 'noinline'
448 # attributes everywhere), which is bad for testing. Still allow the
449 # environment to override if done explicitly.
450 if test "$ac_env_BITCODE_CFLAGS_set" = set; then
451 BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value
453 BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"
455 if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then
456 BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value
458 BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"
461 # C[XX]FLAGS we determined above will be added back at the end
464 user_CXXFLAGS=$CXXFLAGS
466 user_BITCODE_CFLAGS=$BITCODE_CFLAGS
468 user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS
471 # set CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE from the environment, if present
472 if test "$ac_env_CFLAGS_UNROLL_LOOPS_set" = set; then
473 CFLAGS_UNROLL_LOOPS=$ac_env_CFLAGS_UNROLL_LOOPS_value
475 if test "$ac_env_CFLAGS_VECTORIZE_set" = set; then
476 CFLAGS_VECTORIZE=$ac_env_CFLAGS_VECTORIZE_value
479 # Some versions of GCC support some additional useful warning flags.
480 # Check whether they are supported, and add them to CFLAGS if so.
481 # ICC pretends to be GCC but it's lying; it doesn't support these flags,
482 # but has its own. Also check other compiler-specific flags here.
484 if test "$GCC" = yes -a "$ICC" = no; then
485 CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
486 CXXFLAGS="-Wall -Wpointer-arith"
487 # These work in some but not all gcc versions
489 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
490 # -Wdeclaration-after-statement isn't applicable for C++. Specific C files
491 # disable it, so AC_SUBST the negative form.
492 PERMIT_DECLARATION_AFTER_STATEMENT=
493 if test x"$save_CFLAGS" != x"$CFLAGS"; then
494 PERMIT_DECLARATION_AFTER_STATEMENT=-Wno-declaration-after-statement
496 AC_SUBST(PERMIT_DECLARATION_AFTER_STATEMENT)
497 # Really don't want VLAs to be used in our dialect of C
498 PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])
499 # On macOS, complain about usage of symbols newer than the deployment target
500 PGAC_PROG_CC_CFLAGS_OPT([-Werror=unguarded-availability-new])
501 PGAC_PROG_CXX_CFLAGS_OPT([-Werror=unguarded-availability-new])
502 # -Wvla is not applicable for C++
503 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
504 PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])
505 PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])
506 PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])
507 PGAC_PROG_CC_CFLAGS_OPT([-Wimplicit-fallthrough=3])
508 PGAC_PROG_CXX_CFLAGS_OPT([-Wimplicit-fallthrough=3])
509 PGAC_PROG_CC_CFLAGS_OPT([-Wcast-function-type])
510 PGAC_PROG_CXX_CFLAGS_OPT([-Wcast-function-type])
511 PGAC_PROG_CC_CFLAGS_OPT([-Wshadow=compatible-local])
512 PGAC_PROG_CXX_CFLAGS_OPT([-Wshadow=compatible-local])
513 # This was included in -Wall/-Wformat in older GCC versions
514 PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
515 PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])
516 # Disable strict-aliasing rules; needed for gcc 3.3+
517 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
518 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
519 # Disable optimizations that assume no overflow; needed for gcc 4.3+
520 PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
521 PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])
522 # Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
523 PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
524 PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])
525 # Optimization flags for specific files that benefit from loop unrolling
526 PGAC_PROG_CC_VAR_OPT(CFLAGS_UNROLL_LOOPS, [-funroll-loops])
527 # Optimization flags for specific files that benefit from vectorization
528 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize])
530 # The following tests want to suppress various unhelpful warnings by adding
531 # -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo
532 # switches, so we have to test for the positive form and if that works,
533 # add the negative form. Note that tests of this form typically need to
534 # be duplicated in the BITCODE_CFLAGS setup stanza below.
536 # Suppress clang's unhelpful unused-command-line-argument warnings.
538 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
539 if test -n "$NOT_THE_CFLAGS"; then
540 CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
542 # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
543 # of warnings when building plperl because of usages in the Perl headers.
545 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
546 if test -n "$NOT_THE_CFLAGS"; then
547 CFLAGS="$CFLAGS -Wno-compound-token-split-by-macro"
549 # Similarly disable useless truncation warnings from gcc 8+
551 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])
552 if test -n "$NOT_THE_CFLAGS"; then
553 CFLAGS="$CFLAGS -Wno-format-truncation"
556 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])
557 if test -n "$NOT_THE_CFLAGS"; then
558 CFLAGS="$CFLAGS -Wno-stringop-truncation"
560 elif test "$ICC" = yes; then
561 # Intel's compiler has a bug/misoptimization in checking for
562 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
563 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
564 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
565 # Make sure strict aliasing is off (though this is said to be the default)
566 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
567 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
568 elif test "$PORTNAME" = "aix"; then
569 # AIX's xlc has to have strict aliasing turned off too
570 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
571 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
572 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
573 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
576 # If the compiler knows how to hide symbols, add the switch needed for that to
577 # CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE.
579 # This is done separately from the above because -fvisibility is supported by
580 # quite a few different compilers, making the required repetition bothersome.
582 # We might need to add a separate test to check if
583 # __attribute__((visibility("hidden"))) is supported, if we encounter a
584 # compiler that supports one of the supported variants of -fvisibility=hidden
585 # but uses a different syntax to mark a symbol as exported.
586 if test "$GCC" = yes -o "$SUN_STUDIO_CC" = yes ; then
587 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden])
588 # For C++ we additionally want -fvisibility-inlines-hidden
589 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden])
590 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden])
591 have_visibility_attribute=$pgac_cv_prog_CC_cflags__fvisibility_hidden
592 elif test "$PORTNAME" = "aix"; then
593 # Note that xlc accepts -fvisibility=hidden as a file.
594 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-qvisibility=hidden])
595 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-qvisibility=hidden])
596 have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
597 # Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
598 # all extension module symbols to be exported.
599 if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
600 CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
604 if test "$have_visibility_attribute" = "yes"; then
605 AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1,
606 [Define to 1 if your compiler knows the visibility("hidden") attribute.])
609 AC_SUBST(CFLAGS_UNROLL_LOOPS)
610 AC_SUBST(CFLAGS_VECTORIZE)
611 AC_SUBST(CFLAGS_SL_MODULE)
612 AC_SUBST(CXXFLAGS_SL_MODULE)
614 # Determine flags used to emit bitcode for JIT inlining.
615 # 1. We must duplicate any behaviour-changing compiler flags used above,
616 # to keep compatibility with the compiler used for normal Postgres code.
617 # 2. We don't bother to duplicate extra-warnings switches --- seeing a
618 # warning in the main build is enough.
619 # 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.
620 if test "$with_llvm" = yes ; then
621 CLANGXX="$CLANG -xc++"
623 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
624 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
625 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
626 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
627 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
628 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
631 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
632 if test -n "$NOT_THE_CFLAGS"; then
633 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
636 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
637 if test -n "$NOT_THE_CFLAGS"; then
638 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
641 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
642 if test -n "$NOT_THE_CFLAGS"; then
643 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
646 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
647 if test -n "$NOT_THE_CFLAGS"; then
648 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
652 # supply -g if --enable-debug
653 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
657 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
658 CXXFLAGS="$CXXFLAGS -g"
661 # enable code coverage if --enable-coverage
662 if test "$enable_coverage" = yes; then
663 if test "$GCC" = yes; then
664 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
665 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
667 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
671 # enable profiling if --enable-profiling
672 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
673 if test "$GCC" = yes; then
674 AC_DEFINE([PROFILE_PID_DIR], 1,
675 [Define to 1 to allow profiling output to be saved separately for each process.])
676 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
677 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
679 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
683 # On Solaris, we need this #define to get POSIX-conforming versions
684 # of many interfaces (sigwait, getpwuid_r, ...).
685 if test "$PORTNAME" = "solaris"; then
686 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
689 # We already have this in Makefile.win32, but configure needs it too
690 if test "$PORTNAME" = "win32"; then
691 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
694 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
695 # user-specified flags (if any) at the end. This lets users override
696 # the automatic additions.
697 CFLAGS="$CFLAGS $user_CFLAGS"
698 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
699 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
700 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
702 AC_SUBST(BITCODE_CFLAGS)
703 AC_SUBST(BITCODE_CXXFLAGS)
705 # The template file must set up CFLAGS_SL; we don't support user override
708 # Check if the compiler still works with the final flag settings
709 # (note, we're not checking that for CXX, which is optional)
710 AC_MSG_CHECKING([whether the C compiler still works])
711 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
712 [AC_MSG_RESULT(yes)],
714 AC_MSG_ERROR([cannot proceed])])
716 # Defend against gcc -ffast-math
717 if test "$GCC" = yes; then
718 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
720 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
723 # Defend against clang being used on x86-32 without SSE2 enabled. As current
724 # versions of clang do not understand -fexcess-precision=standard, the use of
725 # x87 floating point operations leads to problems like isinf possibly returning
726 # false for a value that is infinite when converted from the 80bit register to
727 # the 8byte memory representation.
729 # Only perform the test if the compiler doesn't understand
730 # -fexcess-precision=standard, that way a potentially fixed compiler will work
732 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
733 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
734 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
738 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
746 # Set up TAS assembly code if needed; the template file has now had its
747 # chance to request this.
749 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
751 if test "$need_tas" = yes ; then
758 AC_SUBST(DLSUFFIX)dnl
759 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
760 [Define to the file name extension of dynamically-loadable modules.])
763 # Set up pkg_config in case we need it below
768 # Automatic dependency tracking
770 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
776 # Enable assert checks
778 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
779 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
780 [Define to 1 to build with assertion checks. (--enable-cassert)])])
784 # Include directories
787 IFS="${IFS}${PATH_SEPARATOR}"
788 # SRCH_INC comes from the template file
789 for dir in $with_includes $SRCH_INC; do
790 if test -d "$dir"; then
791 INCLUDES="$INCLUDES -I$dir"
793 AC_MSG_WARN([*** Include directory $dir does not exist.])
801 # Library directories
804 IFS="${IFS}${PATH_SEPARATOR}"
805 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
806 for dir in $LIBRARY_DIRS $SRCH_LIB; do
807 if test -d "$dir"; then
808 LIBDIRS="$LIBDIRS -L$dir"
810 AC_MSG_WARN([*** Library directory $dir does not exist.])
816 # Enable thread-safe client libraries
818 AC_MSG_CHECKING([allow thread-safe client libraries])
819 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
820 if test "$enable_thread_safety" = yes; then
821 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
822 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
824 AC_MSG_RESULT([$enable_thread_safety])
825 AC_SUBST(enable_thread_safety)
830 AC_MSG_CHECKING([whether to build with ICU support])
831 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
832 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
833 AC_MSG_RESULT([$with_icu])
836 if test "$with_icu" = yes; then
837 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
841 # Optionally build Tcl modules (PL/Tcl)
843 AC_MSG_CHECKING([whether to build with Tcl])
844 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
845 AC_MSG_RESULT([$with_tcl])
848 # We see if the path to the Tcl/Tk configuration scripts is specified.
849 # This will override the use of tclsh to find the paths to search.
851 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
854 # Optionally build Perl modules (PL/Perl)
856 AC_MSG_CHECKING([whether to build Perl modules])
857 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
858 AC_MSG_RESULT([$with_perl])
862 # Optionally build Python modules (PL/Python)
864 AC_MSG_CHECKING([whether to build Python modules])
865 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
866 AC_MSG_RESULT([$with_python])
867 AC_SUBST(with_python)
872 AC_MSG_CHECKING([whether to build with GSSAPI support])
873 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
875 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
876 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
878 AC_MSG_RESULT([$with_gssapi])
879 AC_SUBST(with_gssapi)
886 # Kerberos configuration parameters
888 PGAC_ARG_REQ(with, krb-srvnam,
889 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
891 [with_krb_srvnam="postgres"])
892 AC_SUBST(with_krb_srvnam)
893 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
894 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
900 AC_MSG_CHECKING([whether to build with PAM support])
901 PGAC_ARG_BOOL(with, pam, no,
902 [build with PAM support],
903 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
904 AC_MSG_RESULT([$with_pam])
910 AC_MSG_CHECKING([whether to build with BSD Authentication support])
911 PGAC_ARG_BOOL(with, bsd-auth, no,
912 [build with BSD Authentication support],
913 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
914 AC_MSG_RESULT([$with_bsd_auth])
920 AC_MSG_CHECKING([whether to build with LDAP support])
921 PGAC_ARG_BOOL(with, ldap, no,
922 [build with LDAP support],
923 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
924 AC_MSG_RESULT([$with_ldap])
931 AC_MSG_CHECKING([whether to build with Bonjour support])
932 PGAC_ARG_BOOL(with, bonjour, no,
933 [build with Bonjour support],
934 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
935 AC_MSG_RESULT([$with_bonjour])
941 AC_MSG_CHECKING([whether to build with SELinux support])
942 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
943 AC_SUBST(with_selinux)
944 AC_MSG_RESULT([$with_selinux])
949 AC_MSG_CHECKING([whether to build with systemd support])
950 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
951 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
952 AC_SUBST(with_systemd)
953 AC_MSG_RESULT([$with_systemd])
958 PGAC_ARG_BOOL(with, readline, yes,
959 [do not use GNU Readline nor BSD Libedit for editing])
960 # readline on MinGW has problems with backslashes in psql and other bugs.
961 # This is particularly a problem with non-US code pages.
962 # Therefore disable its use until we understand the cause. 2004-07-20
963 if test "$PORTNAME" = "win32"; then
964 if test "$with_readline" = yes; then
965 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
969 AC_SUBST(with_readline)
975 PGAC_ARG_BOOL(with, libedit-preferred, no,
976 [prefer BSD Libedit over GNU Readline])
982 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
983 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
984 # UUID library. More than one of these might be present on a given platform,
985 # so we make the user say which one she wants.
987 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
988 if test x"$with_uuid" = x"" ; then
991 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
992 if test "$with_ossp_uuid" = yes ; then
996 if test "$with_uuid" != no ; then
997 if test "$with_uuid" = bsd ; then
998 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
999 elif test "$with_uuid" = e2fs ; then
1000 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1001 elif test "$with_uuid" = ossp ; then
1002 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1004 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1013 AC_MSG_CHECKING([whether to build with XML support])
1014 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1015 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1016 AC_MSG_RESULT([$with_libxml])
1017 AC_SUBST(with_libxml)
1019 if test "$with_libxml" = yes ; then
1020 # Check pkg-config, then xml2-config. But for backwards compatibility,
1021 # setting XML2_CONFIG overrides pkg-config.
1022 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1023 have_libxml2_pkg_config=no
1024 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1025 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1026 [have_libxml2_pkg_config=yes], [# do nothing])
1028 if test "$have_libxml2_pkg_config" = no ; then
1029 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1030 if test -n "$XML2_CONFIG"; then
1031 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1032 XML2_LIBS=`$XML2_CONFIG --libs`
1035 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1036 for pgac_option in $XML2_CFLAGS; do
1037 case $pgac_option in
1038 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1041 for pgac_option in $XML2_LIBS; do
1042 case $pgac_option in
1043 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1052 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1053 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1056 AC_SUBST(with_libxslt)
1061 PGAC_ARG_REQ(with, system-tzdata,
1062 [DIR], [use system time zone data in DIR])
1063 AC_SUBST(with_system_tzdata)
1068 PGAC_ARG_BOOL(with, zlib, yes,
1075 AC_MSG_CHECKING([whether to build with LZ4 support])
1076 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1077 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1078 AC_MSG_RESULT([$with_lz4])
1081 if test "$with_lz4" = yes; then
1082 PKG_CHECK_MODULES(LZ4, liblz4)
1083 # We only care about -I, -D, and -L switches;
1084 # note that -llz4 will be added by AC_CHECK_LIB below.
1085 for pgac_option in $LZ4_CFLAGS; do
1086 case $pgac_option in
1087 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1090 for pgac_option in $LZ4_LIBS; do
1091 case $pgac_option in
1092 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1100 AC_MSG_CHECKING([whether to build with ZSTD support])
1101 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1102 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1103 AC_MSG_RESULT([$with_zstd])
1106 if test "$with_zstd" = yes; then
1107 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1108 # We only care about -I, -D, and -L switches;
1109 # note that -lzstd will be added by AC_CHECK_LIB below.
1110 for pgac_option in $ZSTD_CFLAGS; do
1111 case $pgac_option in
1112 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1115 for pgac_option in $ZSTD_LIBS; do
1116 case $pgac_option in
1117 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1125 CPPFLAGS="$CPPFLAGS $INCLUDES"
1126 LDFLAGS="$LDFLAGS $LIBDIRS"
1128 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1129 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1133 AC_SUBST(with_gnu_ld)
1135 AC_CHECK_TOOL(AR, ar, ar)
1136 if test "$PORTNAME" = "win32"; then
1137 AC_CHECK_TOOL(WINDRES, windres, windres)
1141 # When Autoconf chooses install-sh as install program it tries to generate
1142 # a relative path to it in each makefile where it substitutes it. This clashes
1143 # with our Makefile.global concept. This workaround helps.
1145 *install-sh*) install_bin='';;
1146 *) install_bin=$INSTALL;;
1148 AC_SUBST(install_bin)
1150 PGAC_PATH_PROGS(TAR, tar)
1153 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1154 # a relative path to it in each makefile where it substitutes it. This clashes
1155 # with our Makefile.global concept. This workaround helps.
1157 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1164 if test "$with_perl" = yes; then
1165 if test -z "$PERL"; then
1166 AC_MSG_ERROR([Perl not found])
1168 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1169 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1170 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1171 You might have to rebuild your Perl installation. Refer to the
1172 documentation for details. Use --without-perl to disable building
1175 # On most platforms, archlibexp is also where the Perl include files live ...
1176 perl_includespec="-I$perl_archlibexp/CORE"
1177 # ... but on newer macOS versions, we must use -iwithsysroot to look
1179 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1180 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1181 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1184 AC_SUBST(perl_includespec)dnl
1185 PGAC_CHECK_PERL_EMBED_CCFLAGS
1186 PGAC_CHECK_PERL_EMBED_LDFLAGS
1189 if test "$with_python" = yes; then
1191 PGAC_CHECK_PYTHON_EMBED_SETUP
1194 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1195 PGAC_PATH_PROGS(ZIC, zic)
1196 if test -z "$ZIC"; then
1198 When cross-compiling, either use the option --with-system-tzdata to use
1199 existing time-zone data, or set the environment variable ZIC to a zic
1200 program to use during the build.])
1207 # For each platform, we need to know about any special compile and link
1208 # libraries, and whether the normal C function names are thread-safe.
1209 # See the comment at the top of src/port/thread.c for more information.
1210 # WIN32 doesn't need the pthread tests; it always uses threads
1212 # These tests are run before the library-tests, because linking with the
1213 # other libraries can pull in the pthread functions as a side-effect. We
1214 # want to use the -pthread or similar flags directly, and not rely on
1215 # the side-effects of linking with some other library.
1217 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1218 dnl invocation below is the first one in the script, and autoconf generates
1219 dnl additional code for that, which must not be inside the if-block. AS_IF
1220 dnl knows how to do that.
1221 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1223 AX_PTHREAD # set thread flags
1225 # Some platforms use these, so just define them. They can't hurt if they
1226 # are not supported.
1227 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1229 # Check for *_r functions
1232 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1233 LIBS="$LIBS $PTHREAD_LIBS"
1235 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1236 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1238 AC_CHECK_FUNCS([strerror_r])
1240 # Do test here with the proper thread flags
1241 PGAC_FUNC_STRERROR_R_INT
1247 # do not use values from template file
1252 AC_SUBST(PTHREAD_CFLAGS)
1253 AC_SUBST(PTHREAD_LIBS)
1259 ## Most libraries are included only if they demonstrably provide a function
1260 ## we need, but libm is an exception: always include it, because there are
1261 ## too many compilers that play cute optimization games that will break
1262 ## probes for standard functions such as pow().
1265 AC_CHECK_LIB(m, main)
1266 AC_SEARCH_LIBS(setproctitle, util)
1267 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1268 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1269 # required. Just checking for dlsym() ought to suffice.
1270 AC_SEARCH_LIBS(dlsym, dl)
1271 AC_SEARCH_LIBS(socket, [socket ws2_32])
1272 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1273 AC_SEARCH_LIBS(shm_open, rt)
1274 AC_SEARCH_LIBS(shm_unlink, rt)
1275 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1277 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1279 AC_SEARCH_LIBS(shmget, cygipc)
1281 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1283 if test "$enable_thread_safety" = yes; then
1284 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1287 if test "$with_readline" = yes; then
1289 if test x"$pgac_cv_check_readline" = x"no"; then
1290 AC_MSG_ERROR([readline library not found
1291 If you have readline already installed, see config.log for details on the
1292 failure. It is possible the compiler isn't looking in the proper directory.
1293 Use --without-readline to disable readline support.])
1297 if test "$with_zlib" = yes; then
1298 AC_CHECK_LIB(z, inflate, [],
1299 [AC_MSG_ERROR([zlib library not found
1300 If you have zlib already installed, see config.log for details on the
1301 failure. It is possible the compiler isn't looking in the proper directory.
1302 Use --without-zlib to disable zlib support.])])
1305 if test "$enable_spinlocks" = yes; then
1306 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1309 *** Not using spinlocks will cause poor performance.])
1312 if test "$enable_atomics" = yes; then
1313 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1316 *** Not using atomic operations will cause poor performance.])
1319 if test "$with_gssapi" = yes ; then
1320 if test "$PORTNAME" != "win32"; then
1321 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1322 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1324 LIBS="$LIBS -lgssapi32"
1331 # There is currently only one supported SSL/TLS library: OpenSSL.
1333 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1334 if test x"$with_ssl" = x"" ; then
1337 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1338 if test "$with_openssl" = yes ; then
1342 if test "$with_ssl" = openssl ; then
1344 # Minimum required OpenSSL version is 1.0.1
1345 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1346 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1347 if test "$PORTNAME" != "win32"; then
1348 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1349 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1351 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1352 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1354 # Function introduced in OpenSSL 1.0.2.
1355 AC_CHECK_FUNCS([X509_get_signature_nid])
1356 # Functions introduced in OpenSSL 1.1.0. We used to check for
1357 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1358 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1359 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1361 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1362 # OpenSSL versions before 1.1.0 required setting callback functions, for
1363 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1364 # function was removed.
1365 AC_CHECK_FUNCS([CRYPTO_lock])
1366 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1367 elif test "$with_ssl" != no ; then
1368 AC_MSG_ERROR([--with-ssl must specify openssl])
1372 if test "$with_pam" = yes ; then
1373 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1376 if test "$with_libxml" = yes ; then
1377 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1380 if test "$with_libxslt" = yes ; then
1381 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1384 if test "$with_lz4" = yes ; then
1385 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1388 if test "$with_zstd" = yes ; then
1389 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1392 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1393 # also, on AIX, we may need to have openssl in LIBS for this step.
1394 if test "$with_ldap" = yes ; then
1396 if test "$PORTNAME" != "win32"; then
1397 AC_CHECK_LIB(ldap, ldap_bind, [],
1398 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1400 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1401 # This test is carried out against libldap.
1402 AC_CHECK_FUNCS([ldap_initialize])
1403 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1404 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1405 # library from a separate OpenLDAP installation). The most reliable
1406 # way to check that is to check for a function introduced in 2.5.
1407 AC_CHECK_FUNC([ldap_verify_credentials],
1408 [thread_safe_libldap=yes],
1409 [thread_safe_libldap=no])
1410 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1411 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1412 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1414 AC_CHECK_LIB(ldap_r, ldap_bind,
1415 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1416 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1417 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1419 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1422 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1423 LDAP_LIBS_FE="-lwldap32"
1424 LDAP_LIBS_BE="-lwldap32"
1428 AC_SUBST(LDAP_LIBS_FE)
1429 AC_SUBST(LDAP_LIBS_BE)
1431 # for contrib/sepgsql
1432 if test "$with_selinux" = yes; then
1433 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1434 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1437 # for contrib/uuid-ossp
1438 if test "$with_uuid" = bsd ; then
1439 # On BSD, the UUID functions are in libc
1440 AC_CHECK_FUNC(uuid_to_string,
1442 [AC_MSG_ERROR([BSD UUID functions are not present])])
1443 elif test "$with_uuid" = e2fs ; then
1444 # On macOS, the UUID functions are in libc
1445 AC_CHECK_FUNC(uuid_generate,
1447 [AC_CHECK_LIB(uuid, uuid_generate,
1448 [UUID_LIBS="-luuid"],
1449 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1450 elif test "$with_uuid" = ossp ; then
1451 AC_CHECK_LIB(ossp-uuid, uuid_export,
1452 [UUID_LIBS="-lossp-uuid"],
1453 [AC_CHECK_LIB(uuid, uuid_export,
1454 [UUID_LIBS="-luuid"],
1455 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1466 AC_CHECK_HEADERS(m4_normalize([
1485 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1486 AC_CHECK_HEADERS(readline/readline.h, [],
1487 [AC_CHECK_HEADERS(readline.h, [],
1488 [AC_MSG_ERROR([readline header not found
1489 If you have readline already installed, see config.log for details on the
1490 failure. It is possible the compiler isn't looking in the proper directory.
1491 Use --without-readline to disable readline support.])])])
1492 AC_CHECK_HEADERS(readline/history.h, [],
1493 [AC_CHECK_HEADERS(history.h, [],
1494 [AC_MSG_ERROR([history header not found
1495 If you have readline already installed, see config.log for details on the
1496 failure. It is possible the compiler isn't looking in the proper directory.
1497 Use --without-readline to disable readline support.])])])
1500 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1501 # Some installations of libedit usurp /usr/include/readline/, which seems
1502 # bad practice, since in combined installations readline will have its headers
1503 # there. We might have to resort to AC_EGREP checks to make sure we found
1504 # the proper header...
1505 AC_CHECK_HEADERS(editline/readline.h, [],
1506 [AC_CHECK_HEADERS(readline.h, [],
1507 [AC_CHECK_HEADERS(readline/readline.h, [],
1508 [AC_MSG_ERROR([readline header not found
1509 If you have libedit already installed, see config.log for details on the
1510 failure. It is possible the compiler isn't looking in the proper directory.
1511 Use --without-readline to disable libedit support.])])])])
1512 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1513 # not be there at all. Hence, don't complain if not found. We must check
1514 # though, since in yet other versions it is an independent header.
1515 AC_CHECK_HEADERS(editline/history.h, [],
1516 [AC_CHECK_HEADERS(history.h, [],
1517 [AC_CHECK_HEADERS(readline/history.h)])])
1520 if test "$with_zlib" = yes; then
1521 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1522 If you have zlib already installed, see config.log for details on the
1523 failure. It is possible the compiler isn't looking in the proper directory.
1524 Use --without-zlib to disable zlib support.])])
1527 PGAC_PATH_PROGS(LZ4, lz4)
1528 if test "$with_lz4" = yes; then
1529 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1532 PGAC_PATH_PROGS(ZSTD, zstd)
1533 if test "$with_zstd" = yes; then
1534 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1537 if test "$with_gssapi" = yes ; then
1538 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1539 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1542 if test "$with_ssl" = openssl ; then
1543 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1544 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1547 if test "$with_pam" = yes ; then
1548 AC_CHECK_HEADERS(security/pam_appl.h, [],
1549 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1550 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1553 if test "$with_bsd_auth" = yes ; then
1554 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1557 if test "$with_systemd" = yes ; then
1558 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1561 if test "$with_libxml" = yes ; then
1562 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1565 if test "$with_libxslt" = yes ; then
1566 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1569 if test "$with_ldap" = yes ; then
1570 if test "$PORTNAME" != "win32"; then
1571 AC_CHECK_HEADER(ldap.h, [],
1572 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1575 AC_CHECK_HEADER(winldap.h, [],
1576 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1577 [AC_INCLUDES_DEFAULT
1578 #include <windows.h>
1583 if test "$with_bonjour" = yes ; then
1584 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1585 dnl At some point we might add something like
1586 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1587 dnl but right now, what that would mainly accomplish is to encourage
1588 dnl people to try to use the avahi implementation, which does not work.
1589 dnl If you want to use Apple's own Bonjour code on another platform,
1590 dnl just add -ldns_sd to LIBS manually.
1593 # for contrib/uuid-ossp
1594 if test "$with_uuid" = bsd ; then
1595 AC_CHECK_HEADERS(uuid.h,
1596 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1597 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1598 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1599 elif test "$with_uuid" = e2fs ; then
1600 AC_CHECK_HEADERS(uuid/uuid.h,
1601 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1602 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1603 [AC_CHECK_HEADERS(uuid.h,
1604 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1605 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1606 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1607 elif test "$with_uuid" = ossp ; then
1608 AC_CHECK_HEADERS(ossp/uuid.h,
1609 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1610 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1611 [AC_CHECK_HEADERS(uuid.h,
1612 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1613 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1614 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1617 if test "$PORTNAME" = "win32" ; then
1618 AC_CHECK_HEADERS(crtdefs.h)
1622 ## Types, structures, compiler characteristics
1625 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1628 PGAC_PRINTF_ARCHETYPE
1629 PGAC_C_STATIC_ASSERT
1631 PGAC_C_TYPES_COMPATIBLE
1632 PGAC_C_BUILTIN_CONSTANT_P
1633 PGAC_C_BUILTIN_UNREACHABLE
1634 PGAC_C_COMPUTED_GOTO
1635 PGAC_STRUCT_TIMEZONE
1637 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1638 PGAC_STRUCT_SOCKADDR_SA_LEN
1642 # MSVC doesn't cope well with defining restrict to __restrict, the
1643 # spelling it understands, because it conflicts with
1644 # __declspec(restrict). Therefore we define pg_restrict to the
1645 # appropriate definition, which presumably won't conflict.
1647 # Allow platforms with buggy compilers to force restrict to not be
1648 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1651 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1654 pg_restrict="$ac_cv_c_restrict"
1656 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1657 [Define to keyword to use for C99 restrict support, or to nothing if not
1660 AC_CHECK_TYPES([struct cmsgcred], [], [],
1661 [#include <sys/socket.h>
1662 #include <sys/param.h>
1663 #ifdef HAVE_SYS_UCRED_H
1664 #include <sys/ucred.h>
1667 AC_CHECK_TYPES([struct option], [], [],
1668 [#ifdef HAVE_GETOPT_H
1672 if test "$with_zlib" = yes; then
1673 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1674 # did not). While we could work around the lack of z_streamp, it
1675 # seems unwise to encourage people to use such old zlib versions...
1676 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1677 Use --without-zlib to disable zlib support.])],
1678 [#include <zlib.h>])
1683 # On x86_64, check if we can compile a popcntq instruction
1684 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1685 [pgac_cv_have_x86_64_popcntq],
1686 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1687 [long long x = 1; long long r;
1688 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1689 [pgac_cv_have_x86_64_popcntq=yes],
1690 [pgac_cv_have_x86_64_popcntq=no])])
1691 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1692 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1696 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1697 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1698 [pgac_cv_have_i_constraint__builtin_constant_p],
1699 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1701 addi(int ra, int si)
1704 if (__builtin_constant_p(si))
1705 __asm__ __volatile__(
1706 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1709 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1710 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1711 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1712 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1713 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1714 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1719 # Check largefile support. You might think this is a system service not a
1720 # compiler characteristic, but you'd be wrong. We must check this before
1721 # probing existence of related functions such as fseeko, since the largefile
1722 # defines can affect what is generated for that.
1723 if test "$PORTNAME" != "win32"; then
1725 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1726 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1727 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1728 dnl versions where the feature actually works, it's on by default anyway.
1729 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1732 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1733 AC_CHECK_SIZEOF([off_t])
1735 # If we don't have largefile support, can't handle segsize >= 2GB.
1736 if test "$ac_cv_sizeof_off_t" -lt 8 -a "$segsize" != "1"; then
1737 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1740 AC_CHECK_SIZEOF([bool], [],
1741 [#ifdef HAVE_STDBOOL_H
1742 #include <stdbool.h>
1745 dnl We use <stdbool.h> if we have it and it declares type bool as having
1746 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1747 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1748 AC_DEFINE([PG_USE_STDBOOL], 1,
1749 [Define to 1 to use <stdbool.h> to define type bool.])
1754 ## Functions, global variables
1757 PGAC_VAR_INT_TIMEZONE
1758 PGAC_FUNC_WCSTOMBS_L
1760 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1761 # symbols that that library has no business exposing to the world. Pending
1762 # acquisition of a clue by those developers, ignore libedit (including its
1763 # possible alias of libreadline) while checking for everything else.
1764 LIBS_including_readline="$LIBS"
1765 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1767 AC_CHECK_FUNCS(m4_normalize([
1778 pthread_is_threaded_np
1789 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1790 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1791 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1792 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1793 # We assume that we needn't test all widths of these explicitly:
1794 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1795 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1796 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1797 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1798 # so it needs a different test function.
1799 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1801 # We require 64-bit fseeko() to be available, but run this check anyway
1802 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1805 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1806 # by calling it, 2009-04-02
1807 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1808 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1809 AS_IF([test "$PORTNAME" != "solaris"], [
1810 AC_CHECK_FUNCS(posix_fadvise)
1811 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1814 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1815 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1817 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1818 # won't handle deployment target restrictions on macOS
1819 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1820 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1822 # This is probably only present on macOS, but may as well check always
1823 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1825 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1826 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1827 [#include <machine/vmparam.h>
1828 #include <sys/exec.h>
1830 [PS_STRINGS->ps_nargvstr = 1;
1831 PS_STRINGS->ps_argvstr = "foo";])],
1832 [pgac_cv_var_PS_STRINGS=yes],
1833 [pgac_cv_var_PS_STRINGS=no])])
1834 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1835 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1838 AC_REPLACE_FUNCS(m4_normalize([
1849 if test "$enable_thread_safety" = yes; then
1850 AC_REPLACE_FUNCS(pthread_barrier_wait)
1853 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1854 # Cygwin and (apparently, based on test results) Mingw both
1855 # have a broken strtof(), so substitute its implementation.
1856 # That's not a perfect fix, since it doesn't avoid double-rounding,
1857 # but we have no better options.
1859 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1862 # Similarly, use system's getopt_long() only if system provides struct option.
1863 if test x"$ac_cv_type_struct_option" = xyes ; then
1864 AC_REPLACE_FUNCS([getopt_long])
1866 AC_LIBOBJ(getopt_long)
1869 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1870 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1871 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1875 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1876 # so always use our version on Windows.
1877 if test "$PORTNAME" = "win32"; then
1879 AC_LIBOBJ(getopt_long)
1882 # Win32 (really MinGW) support
1883 if test "$PORTNAME" = "win32"; then
1884 AC_CHECK_FUNCS(_configthreadlocale)
1889 AC_LIBOBJ(win32dlopen)
1891 AC_LIBOBJ(win32error)
1892 AC_LIBOBJ(win32fdatasync)
1893 AC_LIBOBJ(win32getrusage)
1894 AC_LIBOBJ(win32link)
1895 AC_LIBOBJ(win32ntdll)
1896 AC_LIBOBJ(win32pread)
1897 AC_LIBOBJ(win32pwrite)
1898 AC_LIBOBJ(win32security)
1899 AC_LIBOBJ(win32setlocale)
1900 AC_LIBOBJ(win32stat)
1902 # Cygwin needs only a bit of that
1903 if test "$PORTNAME" = "cygwin"; then
1907 AC_CHECK_FUNC(syslog,
1908 [AC_CHECK_HEADER(syslog.h,
1909 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1911 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1912 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1913 [extern int opterr; opterr = 1;])],
1914 [pgac_cv_var_int_opterr=yes],
1915 [pgac_cv_var_int_opterr=no])])
1916 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1917 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1920 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1921 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1922 [extern int optreset; optreset = 1;])],
1923 [pgac_cv_var_int_optreset=yes],
1924 [pgac_cv_var_int_optreset=no])])
1925 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1926 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1929 if test "$with_icu" = yes; then
1930 ac_save_CPPFLAGS=$CPPFLAGS
1931 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1933 # Verify we have ICU's header files
1934 AC_CHECK_HEADER(unicode/ucol.h, [],
1935 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1937 CPPFLAGS=$ac_save_CPPFLAGS
1940 if test "$with_llvm" = yes; then
1941 PGAC_CHECK_LLVM_FUNCTIONS()
1944 # Lastly, restore full LIBS list and check for readline/libedit symbols
1945 LIBS="$LIBS_including_readline"
1947 if test "$with_readline" = yes; then
1948 PGAC_READLINE_VARIABLES
1949 AC_CHECK_FUNCS(m4_normalize([
1951 history_truncate_file
1952 rl_completion_matches
1953 rl_filename_completion_function
1954 rl_reset_screen_size
1960 # This test makes sure that run tests work at all. Sometimes a shared
1961 # library is found by the linker, but the runtime linker can't find it.
1962 # This check should come after all modifications of compiler or linker
1963 # variables, and before any other run tests.
1964 AC_MSG_CHECKING([test program])
1965 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1966 [AC_MSG_RESULT(ok)],
1967 [AC_MSG_RESULT(failed)
1969 Could not execute a simple test program. This may be a problem
1970 related to locating shared libraries. Check the file 'config.log'
1971 for the exact reason.]])],
1972 [AC_MSG_RESULT([cross-compiling])])
1974 # --------------------
1975 # Run tests below here
1976 # --------------------
1978 dnl Check to see if we have a working 64-bit integer type.
1979 dnl Since Postgres 8.4, we no longer support compilers without a working
1980 dnl 64-bit type; but we have to determine whether that type is called
1981 dnl "long int" or "long long int".
1983 PGAC_TYPE_64BIT_INT([long int])
1985 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
1986 pg_int64_type="long int"
1988 PGAC_TYPE_64BIT_INT([long long int])
1989 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1990 pg_int64_type="long long int"
1992 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
1996 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
1997 [Define to the name of a signed 64-bit integer type.])
1999 # Select the printf length modifier that goes with that, too.
2000 if test x"$pg_int64_type" = x"long long int" ; then
2001 INT64_MODIFIER='"ll"'
2003 INT64_MODIFIER='"l"'
2006 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2007 [Define to the appropriate printf length modifier for 64-bit ints.])
2009 # has to be down here, rather than with the other builtins, because
2010 # the test uses PG_INT64_TYPE.
2011 PGAC_C_BUILTIN_OP_OVERFLOW
2013 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2014 AC_CHECK_SIZEOF([void *])
2015 AC_CHECK_SIZEOF([size_t])
2016 AC_CHECK_SIZEOF([long])
2018 # Determine memory alignment requirements for the basic C data types.
2020 AC_CHECK_ALIGNOF(short)
2021 AC_CHECK_ALIGNOF(int)
2022 AC_CHECK_ALIGNOF(long)
2023 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2024 AC_CHECK_ALIGNOF(long long int)
2026 AC_CHECK_ALIGNOF(double)
2028 # Compute maximum alignment of any basic type.
2029 # We assume long's alignment is at least as strong as char, short, or int;
2030 # but we must check long long (if it is being used for int64) and double.
2031 # Note that we intentionally do not consider any types wider than 64 bits,
2032 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2033 # for disk and memory space.
2035 MAX_ALIGNOF=$ac_cv_alignof_long
2036 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2037 MAX_ALIGNOF=$ac_cv_alignof_double
2039 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2040 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2042 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2045 # Some platforms predefine the types int8, int16, etc. Only check
2046 # a (hopefully) representative subset.
2047 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2048 [#include <stdio.h>])
2050 # Some compilers offer a 128-bit integer scalar type.
2051 PGAC_TYPE_128BIT_INT
2053 # Check for various atomic operations now that we have checked how to declare
2055 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2056 PGAC_HAVE_GCC__SYNC_INT32_TAS
2057 PGAC_HAVE_GCC__SYNC_INT32_CAS
2058 PGAC_HAVE_GCC__SYNC_INT64_CAS
2059 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2060 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2063 # Check for x86 cpuid instruction
2064 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2065 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2066 [[unsigned int exx[4] = {0, 0, 0, 0};
2067 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2069 [pgac_cv__get_cpuid="yes"],
2070 [pgac_cv__get_cpuid="no"])])
2071 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2072 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2075 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2076 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2077 [[unsigned int exx[4] = {0, 0, 0, 0};
2078 __get_cpuid(exx[0], 1);
2080 [pgac_cv__cpuid="yes"],
2081 [pgac_cv__cpuid="no"])])
2082 if test x"$pgac_cv__cpuid" = x"yes"; then
2083 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2086 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2088 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2089 # with the default compiler flags. If not, check if adding the -msse4.2
2090 # flag helps. CFLAGS_SSE42 is set to -msse4.2 if that's required.
2091 PGAC_SSE42_CRC32_INTRINSICS([])
2092 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2093 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2095 AC_SUBST(CFLAGS_SSE42)
2097 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2098 # define __SSE4_2__ in that case.
2099 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2101 #error __SSE4_2__ not defined
2103 ])], [SSE4_2_TARGETED=1])
2105 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2107 # First check if __crc32c* intrinsics can be used with the default compiler
2108 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2109 # CFLAGS_ARMV8_CRC32C is set if the extra flag is required.
2110 PGAC_ARMV8_CRC32C_INTRINSICS([])
2111 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2112 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2114 AC_SUBST(CFLAGS_ARMV8_CRC32C)
2116 # Select CRC-32C implementation.
2118 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2119 # use the special CRC instructions for calculating CRC-32C. If we're not
2120 # targeting such a processor, but we can nevertheless produce code that uses
2121 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2122 # implementations and select which one to use at runtime, depending on whether
2123 # SSE 4.2 is supported by the processor we're running on.
2125 # Similarly, if we are targeting an ARM processor that has the CRC
2126 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2127 # we're not targeting such a processor, but can nevertheless produce code that
2128 # uses the CRC instructions, compile both, and select at runtime.
2130 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2131 # in the template or configure command line.
2132 if test x"$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
2133 # Use Intel SSE 4.2 if available.
2134 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2137 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2138 # the runtime check.
2139 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2140 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2142 # Use ARM CRC Extension if available.
2143 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_ARMV8_CRC32C" = x""; then
2146 # ARM CRC Extension, with runtime check?
2147 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2148 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2150 # fall back to slicing-by-8 algorithm, which doesn't require any
2151 # special CPU support.
2152 USE_SLICING_BY_8_CRC32C=1
2159 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2160 AC_MSG_CHECKING([which CRC-32C implementation to use])
2161 if test x"$USE_SSE42_CRC32C" = x"1"; then
2162 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2163 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2164 AC_MSG_RESULT(SSE 4.2)
2166 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2167 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2168 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2169 AC_MSG_RESULT(SSE 4.2 with runtime check)
2171 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2172 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2173 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2174 AC_MSG_RESULT(ARMv8 CRC instructions)
2176 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2177 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2178 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2179 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2181 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2182 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2183 AC_MSG_RESULT(slicing-by-8)
2188 AC_SUBST(PG_CRC32C_OBJS)
2191 # Select semaphore implementation type.
2192 if test "$PORTNAME" != "win32"; then
2193 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2194 # Need sem_open for this
2195 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2197 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2198 # Need sem_init for this
2199 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2201 AC_MSG_CHECKING([which semaphore API to use])
2202 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2203 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2204 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2205 sematype="named POSIX"
2207 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2208 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2209 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2210 sematype="unnamed POSIX"
2212 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2213 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2217 AC_MSG_RESULT([$sematype])
2219 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2220 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2224 # Select shared-memory implementation type.
2225 if test "$PORTNAME" != "win32"; then
2226 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2227 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2229 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2230 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2233 # Select random number source. If a TLS library is used then it will be the
2234 # first choice, else the native platform sources (Windows API or /dev/urandom)
2236 AC_MSG_CHECKING([which random number source to use])
2237 if test x"$with_ssl" = x"openssl" ; then
2238 AC_MSG_RESULT([OpenSSL])
2239 elif test x"$PORTNAME" = x"win32" ; then
2240 AC_MSG_RESULT([Windows native])
2241 elif test x"$cross_compiling" = x"yes"; then
2242 AC_MSG_RESULT([assuming /dev/urandom])
2244 AC_MSG_RESULT([/dev/urandom])
2245 AC_CHECK_FILE([/dev/urandom], [], [])
2247 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2249 no source of strong random numbers was found
2250 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2254 # If not set in template file, set bytes to use libc memset()
2255 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2256 MEMSET_LOOP_LIMIT=1024
2258 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2261 if test "$enable_nls" = yes ; then
2265 # Check for Tcl configuration script tclConfig.sh
2266 if test "$with_tcl" = yes; then
2267 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2268 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2269 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2270 if test "$TCL_SHARED_BUILD" != 1; then
2271 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2272 Use --without-tcl to disable building PL/Tcl.])
2274 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2275 ac_save_CPPFLAGS=$CPPFLAGS
2276 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2277 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2278 CPPFLAGS=$ac_save_CPPFLAGS
2281 # check for <perl.h>
2282 if test "$with_perl" = yes; then
2283 ac_save_CPPFLAGS=$CPPFLAGS
2284 CPPFLAGS="$CPPFLAGS $perl_includespec"
2285 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2286 [#include <EXTERN.h>])
2287 # While we're at it, check that we can link to libperl.
2288 # On most platforms, if perl.h is there then libperl.so will be too, but at
2289 # this writing Debian packages them separately. There is no known reason to
2290 # waste cycles on separate probes for the Tcl or Python libraries, though.
2291 # On some Red Hat platforms, the link attempt can fail if we don't use
2292 # CFLAGS_SL while building the test program.
2293 ac_save_CFLAGS=$CFLAGS
2294 CFLAGS="$CFLAGS $CFLAGS_SL"
2295 pgac_save_LIBS=$LIBS
2296 LIBS="$perl_embed_ldflags"
2297 AC_MSG_CHECKING([for libperl])
2298 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2301 ], [perl_alloc();])],
2302 [AC_MSG_RESULT(yes)],
2304 AC_MSG_ERROR([libperl library is required for Perl])])
2305 LIBS=$pgac_save_LIBS
2306 CFLAGS=$ac_save_CFLAGS
2307 CPPFLAGS=$ac_save_CPPFLAGS
2310 # check for <Python.h>
2311 if test "$with_python" = yes; then
2312 ac_save_CPPFLAGS=$CPPFLAGS
2313 CPPFLAGS="$python_includespec $CPPFLAGS"
2314 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2315 CPPFLAGS=$ac_save_CPPFLAGS
2319 # Check for documentation-building tools
2321 PGAC_PATH_PROGS(XMLLINT, xmllint)
2322 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2323 PGAC_PATH_PROGS(FOP, fop)
2324 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2327 # Check for test tools
2329 if test "$enable_tap_tests" = yes; then
2330 # Make sure we know where prove is.
2331 PGAC_PATH_PROGS(PROVE, prove)
2332 if test -z "$PROVE"; then
2333 AC_MSG_ERROR([prove not found])
2335 # Check for necessary Perl modules. You might think we should use
2336 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2337 # installation than perl, eg on MSys, so we have to check using prove.
2338 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2339 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2340 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2341 if test $? -eq 0; then
2342 # log the module version details, but don't show them interactively
2343 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2346 # on failure, though, show the results to the user
2347 AC_MSG_RESULT([$modulestderr])
2348 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2352 # If compiler will take -Wl,--as-needed (or various platform-specific
2353 # spellings thereof) then add that to LDFLAGS. This is much easier than
2354 # trying to filter LIBS to the minimum for each executable.
2355 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2356 # libreadline; therefore we postpone testing it until we know what library
2357 # dependencies readline has. The test code will try to link with $LIBS.
2358 if test "$with_readline" = yes; then
2359 link_test_func=readline
2364 if test "$PORTNAME" = "darwin"; then
2365 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2366 elif test "$PORTNAME" = "openbsd"; then
2367 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2369 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2372 # Create compiler version string
2373 if test x"$GCC" = x"yes" ; then
2374 cc_string=`${CC} --version | sed q`
2375 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2376 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2377 cc_string=`${CC} -V 2>&1 | sed q`
2382 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2383 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2384 [A string containing the version number, platform, and C compiler])
2386 # Supply a numeric version string for use by 3rd party add-ons
2387 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2388 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2389 $AWK '{printf "%d%04d", $1, $2}'`"]
2390 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2391 AC_SUBST(PG_VERSION_NUM)
2393 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2394 # literally, so that it's possible to override it at build time using
2395 # a command like "make ... PG_SYSROOT=path". This has to be done after
2396 # we've finished all configure checks that depend on CPPFLAGS.
2397 # The same for LDFLAGS, too.
2398 if test x"$PG_SYSROOT" != x; then
2399 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2400 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2402 AC_SUBST(PG_SYSROOT)
2405 # Begin output steps
2407 AC_MSG_NOTICE([using compiler=$cc_string])
2408 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2409 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2410 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2411 # Currently only used when LLVM is used
2412 if test "$with_llvm" = yes ; then
2413 AC_MSG_NOTICE([using CXX=$CXX])
2414 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2415 AC_MSG_NOTICE([using CLANG=$CLANG])
2416 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2417 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2420 # prepare build tree if outside source tree
2421 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2422 # Note 2: /bin/pwd might be better than shell's built-in at getting
2423 # a symlink-free name.
2424 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2428 if test "$no_create" != yes; then
2429 _AS_ECHO_N([preparing build tree... ])
2430 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2431 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2432 || AC_MSG_ERROR(failed)
2436 AC_SUBST(vpath_build)
2439 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2442 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2443 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2444 src/include/pg_config_os.h:src/include/port/${template}.h
2445 src/Makefile.port:src/makefiles/Makefile.${template}
2448 if test "$PORTNAME" = "win32"; then
2449 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2450 # Links sometimes fail undetected on Mingw -
2451 # so here we detect it and warn the user
2452 for FILE in $CONFIG_LINKS
2454 # test -e works for symlinks in the MinGW console
2455 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2460 AC_CONFIG_HEADERS([src/include/pg_config.h],
2462 # Update timestamp for pg_config.h (see Makefile.global)
2463 echo >src/include/stamp-h
2466 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2468 # Update timestamp for pg_config_ext.h (see Makefile.global)
2469 echo >src/include/stamp-ext-h
2472 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2473 [echo >src/interfaces/ecpg/include/stamp-h])
2477 # Ensure that any meson build directories would reconfigure and see that
2478 # there's a conflicting in-tree build and can error out.
2479 if test "$vpath_build"="no"; then