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])
630 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])
631 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])
634 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
635 if test -n "$NOT_THE_CFLAGS"; then
636 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
639 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
640 if test -n "$NOT_THE_CFLAGS"; then
641 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
644 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
645 if test -n "$NOT_THE_CFLAGS"; then
646 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
649 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
650 if test -n "$NOT_THE_CFLAGS"; then
651 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
655 # supply -g if --enable-debug
656 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
660 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
661 CXXFLAGS="$CXXFLAGS -g"
664 # enable code coverage if --enable-coverage
665 if test "$enable_coverage" = yes; then
666 if test "$GCC" = yes; then
667 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
668 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
670 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
674 # enable profiling if --enable-profiling
675 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
676 if test "$GCC" = yes; then
677 AC_DEFINE([PROFILE_PID_DIR], 1,
678 [Define to 1 to allow profiling output to be saved separately for each process.])
679 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
680 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
682 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
686 # On Solaris, we need this #define to get POSIX-conforming versions
687 # of many interfaces (sigwait, getpwuid_r, ...).
688 if test "$PORTNAME" = "solaris"; then
689 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
692 # We already have this in Makefile.win32, but configure needs it too
693 if test "$PORTNAME" = "win32"; then
694 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
697 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
698 # user-specified flags (if any) at the end. This lets users override
699 # the automatic additions.
700 CFLAGS="$CFLAGS $user_CFLAGS"
701 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
702 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
703 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
705 AC_SUBST(BITCODE_CFLAGS)
706 AC_SUBST(BITCODE_CXXFLAGS)
708 # The template file must set up CFLAGS_SL; we don't support user override
711 # Check if the compiler still works with the final flag settings
712 # (note, we're not checking that for CXX, which is optional)
713 AC_MSG_CHECKING([whether the C compiler still works])
714 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
715 [AC_MSG_RESULT(yes)],
717 AC_MSG_ERROR([cannot proceed])])
719 # Defend against gcc -ffast-math
720 if test "$GCC" = yes; then
721 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
723 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
726 # Defend against clang being used on x86-32 without SSE2 enabled. As current
727 # versions of clang do not understand -fexcess-precision=standard, the use of
728 # x87 floating point operations leads to problems like isinf possibly returning
729 # false for a value that is infinite when converted from the 80bit register to
730 # the 8byte memory representation.
732 # Only perform the test if the compiler doesn't understand
733 # -fexcess-precision=standard, that way a potentially fixed compiler will work
735 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
736 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
737 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
741 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
749 # Set up TAS assembly code if needed; the template file has now had its
750 # chance to request this.
752 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
754 if test "$need_tas" = yes ; then
761 AC_SUBST(DLSUFFIX)dnl
762 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
763 [Define to the file name extension of dynamically-loadable modules.])
766 # Set up pkg_config in case we need it below
771 # Automatic dependency tracking
773 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
779 # Enable assert checks
781 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
782 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
783 [Define to 1 to build with assertion checks. (--enable-cassert)])])
787 # Include directories
790 IFS="${IFS}${PATH_SEPARATOR}"
791 # SRCH_INC comes from the template file
792 for dir in $with_includes $SRCH_INC; do
793 if test -d "$dir"; then
794 INCLUDES="$INCLUDES -I$dir"
796 AC_MSG_WARN([*** Include directory $dir does not exist.])
804 # Library directories
807 IFS="${IFS}${PATH_SEPARATOR}"
808 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
809 for dir in $LIBRARY_DIRS $SRCH_LIB; do
810 if test -d "$dir"; then
811 LIBDIRS="$LIBDIRS -L$dir"
813 AC_MSG_WARN([*** Library directory $dir does not exist.])
819 # Enable thread-safe client libraries
821 AC_MSG_CHECKING([allow thread-safe client libraries])
822 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
823 if test "$enable_thread_safety" = yes; then
824 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
825 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
827 AC_MSG_RESULT([$enable_thread_safety])
828 AC_SUBST(enable_thread_safety)
833 AC_MSG_CHECKING([whether to build with ICU support])
834 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
835 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
836 AC_MSG_RESULT([$with_icu])
839 if test "$with_icu" = yes; then
840 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
844 # Optionally build Tcl modules (PL/Tcl)
846 AC_MSG_CHECKING([whether to build with Tcl])
847 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
848 AC_MSG_RESULT([$with_tcl])
851 # We see if the path to the Tcl/Tk configuration scripts is specified.
852 # This will override the use of tclsh to find the paths to search.
854 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
857 # Optionally build Perl modules (PL/Perl)
859 AC_MSG_CHECKING([whether to build Perl modules])
860 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
861 AC_MSG_RESULT([$with_perl])
865 # Optionally build Python modules (PL/Python)
867 AC_MSG_CHECKING([whether to build Python modules])
868 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
869 AC_MSG_RESULT([$with_python])
870 AC_SUBST(with_python)
875 AC_MSG_CHECKING([whether to build with GSSAPI support])
876 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
878 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
879 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
881 AC_MSG_RESULT([$with_gssapi])
882 AC_SUBST(with_gssapi)
889 # Kerberos configuration parameters
891 PGAC_ARG_REQ(with, krb-srvnam,
892 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
894 [with_krb_srvnam="postgres"])
895 AC_SUBST(with_krb_srvnam)
896 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
897 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
903 AC_MSG_CHECKING([whether to build with PAM support])
904 PGAC_ARG_BOOL(with, pam, no,
905 [build with PAM support],
906 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
907 AC_MSG_RESULT([$with_pam])
913 AC_MSG_CHECKING([whether to build with BSD Authentication support])
914 PGAC_ARG_BOOL(with, bsd-auth, no,
915 [build with BSD Authentication support],
916 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
917 AC_MSG_RESULT([$with_bsd_auth])
923 AC_MSG_CHECKING([whether to build with LDAP support])
924 PGAC_ARG_BOOL(with, ldap, no,
925 [build with LDAP support],
926 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
927 AC_MSG_RESULT([$with_ldap])
934 AC_MSG_CHECKING([whether to build with Bonjour support])
935 PGAC_ARG_BOOL(with, bonjour, no,
936 [build with Bonjour support],
937 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
938 AC_MSG_RESULT([$with_bonjour])
944 AC_MSG_CHECKING([whether to build with SELinux support])
945 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
946 AC_SUBST(with_selinux)
947 AC_MSG_RESULT([$with_selinux])
952 AC_MSG_CHECKING([whether to build with systemd support])
953 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
954 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
955 AC_SUBST(with_systemd)
956 AC_MSG_RESULT([$with_systemd])
961 PGAC_ARG_BOOL(with, readline, yes,
962 [do not use GNU Readline nor BSD Libedit for editing])
963 # readline on MinGW has problems with backslashes in psql and other bugs.
964 # This is particularly a problem with non-US code pages.
965 # Therefore disable its use until we understand the cause. 2004-07-20
966 if test "$PORTNAME" = "win32"; then
967 if test "$with_readline" = yes; then
968 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
972 AC_SUBST(with_readline)
978 PGAC_ARG_BOOL(with, libedit-preferred, no,
979 [prefer BSD Libedit over GNU Readline])
985 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
986 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
987 # UUID library. More than one of these might be present on a given platform,
988 # so we make the user say which one she wants.
990 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
991 if test x"$with_uuid" = x"" ; then
994 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
995 if test "$with_ossp_uuid" = yes ; then
999 if test "$with_uuid" != no ; then
1000 if test "$with_uuid" = bsd ; then
1001 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
1002 elif test "$with_uuid" = e2fs ; then
1003 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1004 elif test "$with_uuid" = ossp ; then
1005 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1007 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1016 AC_MSG_CHECKING([whether to build with XML support])
1017 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1018 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1019 AC_MSG_RESULT([$with_libxml])
1020 AC_SUBST(with_libxml)
1022 if test "$with_libxml" = yes ; then
1023 # Check pkg-config, then xml2-config. But for backwards compatibility,
1024 # setting XML2_CONFIG overrides pkg-config.
1025 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1026 have_libxml2_pkg_config=no
1027 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1028 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1029 [have_libxml2_pkg_config=yes], [# do nothing])
1031 if test "$have_libxml2_pkg_config" = no ; then
1032 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1033 if test -n "$XML2_CONFIG"; then
1034 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1035 XML2_LIBS=`$XML2_CONFIG --libs`
1038 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1039 for pgac_option in $XML2_CFLAGS; do
1040 case $pgac_option in
1041 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1044 for pgac_option in $XML2_LIBS; do
1045 case $pgac_option in
1046 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1055 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1056 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1059 AC_SUBST(with_libxslt)
1064 PGAC_ARG_REQ(with, system-tzdata,
1065 [DIR], [use system time zone data in DIR])
1066 AC_SUBST(with_system_tzdata)
1071 PGAC_ARG_BOOL(with, zlib, yes,
1078 AC_MSG_CHECKING([whether to build with LZ4 support])
1079 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1080 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1081 AC_MSG_RESULT([$with_lz4])
1084 if test "$with_lz4" = yes; then
1085 PKG_CHECK_MODULES(LZ4, liblz4)
1086 # We only care about -I, -D, and -L switches;
1087 # note that -llz4 will be added by AC_CHECK_LIB below.
1088 for pgac_option in $LZ4_CFLAGS; do
1089 case $pgac_option in
1090 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1093 for pgac_option in $LZ4_LIBS; do
1094 case $pgac_option in
1095 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1103 AC_MSG_CHECKING([whether to build with ZSTD support])
1104 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1105 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1106 AC_MSG_RESULT([$with_zstd])
1109 if test "$with_zstd" = yes; then
1110 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1111 # We only care about -I, -D, and -L switches;
1112 # note that -lzstd will be added by AC_CHECK_LIB below.
1113 for pgac_option in $ZSTD_CFLAGS; do
1114 case $pgac_option in
1115 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1118 for pgac_option in $ZSTD_LIBS; do
1119 case $pgac_option in
1120 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1128 CPPFLAGS="$CPPFLAGS $INCLUDES"
1129 LDFLAGS="$LDFLAGS $LIBDIRS"
1131 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1132 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1136 AC_SUBST(with_gnu_ld)
1138 AC_CHECK_TOOL(AR, ar, ar)
1139 if test "$PORTNAME" = "win32"; then
1140 AC_CHECK_TOOL(WINDRES, windres, windres)
1144 # When Autoconf chooses install-sh as install program it tries to generate
1145 # a relative path to it in each makefile where it substitutes it. This clashes
1146 # with our Makefile.global concept. This workaround helps.
1148 *install-sh*) install_bin='';;
1149 *) install_bin=$INSTALL;;
1151 AC_SUBST(install_bin)
1153 PGAC_PATH_PROGS(TAR, tar)
1156 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1157 # a relative path to it in each makefile where it substitutes it. This clashes
1158 # with our Makefile.global concept. This workaround helps.
1160 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1167 if test "$with_perl" = yes; then
1168 if test -z "$PERL"; then
1169 AC_MSG_ERROR([Perl not found])
1171 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1172 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1173 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1174 You might have to rebuild your Perl installation. Refer to the
1175 documentation for details. Use --without-perl to disable building
1178 # On most platforms, archlibexp is also where the Perl include files live ...
1179 perl_includespec="-I$perl_archlibexp/CORE"
1180 # ... but on newer macOS versions, we must use -iwithsysroot to look
1182 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1183 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1184 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1187 AC_SUBST(perl_includespec)dnl
1188 PGAC_CHECK_PERL_EMBED_CCFLAGS
1189 PGAC_CHECK_PERL_EMBED_LDFLAGS
1192 if test "$with_python" = yes; then
1194 PGAC_CHECK_PYTHON_EMBED_SETUP
1197 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1198 PGAC_PATH_PROGS(ZIC, zic)
1199 if test -z "$ZIC"; then
1201 When cross-compiling, either use the option --with-system-tzdata to use
1202 existing time-zone data, or set the environment variable ZIC to a zic
1203 program to use during the build.])
1210 # For each platform, we need to know about any special compile and link
1211 # libraries, and whether the normal C function names are thread-safe.
1212 # See the comment at the top of src/port/thread.c for more information.
1213 # WIN32 doesn't need the pthread tests; it always uses threads
1215 # These tests are run before the library-tests, because linking with the
1216 # other libraries can pull in the pthread functions as a side-effect. We
1217 # want to use the -pthread or similar flags directly, and not rely on
1218 # the side-effects of linking with some other library.
1220 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1221 dnl invocation below is the first one in the script, and autoconf generates
1222 dnl additional code for that, which must not be inside the if-block. AS_IF
1223 dnl knows how to do that.
1224 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1226 AX_PTHREAD # set thread flags
1228 # Some platforms use these, so just define them. They can't hurt if they
1229 # are not supported.
1230 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1232 # Check for *_r functions
1235 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1236 LIBS="$LIBS $PTHREAD_LIBS"
1238 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1239 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1241 AC_CHECK_FUNCS([strerror_r])
1243 # Do test here with the proper thread flags
1244 PGAC_FUNC_STRERROR_R_INT
1250 # do not use values from template file
1255 AC_SUBST(PTHREAD_CFLAGS)
1256 AC_SUBST(PTHREAD_LIBS)
1262 ## Most libraries are included only if they demonstrably provide a function
1263 ## we need, but libm is an exception: always include it, because there are
1264 ## too many compilers that play cute optimization games that will break
1265 ## probes for standard functions such as pow().
1268 AC_CHECK_LIB(m, main)
1269 AC_SEARCH_LIBS(setproctitle, util)
1270 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1271 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1272 # required. Just checking for dlsym() ought to suffice.
1273 AC_SEARCH_LIBS(dlsym, dl)
1274 AC_SEARCH_LIBS(socket, [socket ws2_32])
1275 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1276 AC_SEARCH_LIBS(shm_open, rt)
1277 AC_SEARCH_LIBS(shm_unlink, rt)
1278 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1280 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1282 AC_SEARCH_LIBS(shmget, cygipc)
1284 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1286 if test "$enable_thread_safety" = yes; then
1287 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1290 if test "$with_readline" = yes; then
1292 if test x"$pgac_cv_check_readline" = x"no"; then
1293 AC_MSG_ERROR([readline library not found
1294 If you have readline already installed, see config.log for details on the
1295 failure. It is possible the compiler isn't looking in the proper directory.
1296 Use --without-readline to disable readline support.])
1300 if test "$with_zlib" = yes; then
1301 AC_CHECK_LIB(z, inflate, [],
1302 [AC_MSG_ERROR([zlib library not found
1303 If you have zlib already installed, see config.log for details on the
1304 failure. It is possible the compiler isn't looking in the proper directory.
1305 Use --without-zlib to disable zlib support.])])
1308 if test "$enable_spinlocks" = yes; then
1309 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1312 *** Not using spinlocks will cause poor performance.])
1315 if test "$enable_atomics" = yes; then
1316 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1319 *** Not using atomic operations will cause poor performance.])
1322 if test "$with_gssapi" = yes ; then
1323 if test "$PORTNAME" != "win32"; then
1324 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1325 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1327 LIBS="$LIBS -lgssapi32"
1334 # There is currently only one supported SSL/TLS library: OpenSSL.
1336 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1337 if test x"$with_ssl" = x"" ; then
1340 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1341 if test "$with_openssl" = yes ; then
1345 if test "$with_ssl" = openssl ; then
1347 # Minimum required OpenSSL version is 1.0.1
1348 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1349 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1350 if test "$PORTNAME" != "win32"; then
1351 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1352 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1354 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1355 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1357 # Function introduced in OpenSSL 1.0.2.
1358 AC_CHECK_FUNCS([X509_get_signature_nid])
1359 # Functions introduced in OpenSSL 1.1.0. We used to check for
1360 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1361 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1362 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1364 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1365 # OpenSSL versions before 1.1.0 required setting callback functions, for
1366 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1367 # function was removed.
1368 AC_CHECK_FUNCS([CRYPTO_lock])
1369 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1370 elif test "$with_ssl" != no ; then
1371 AC_MSG_ERROR([--with-ssl must specify openssl])
1375 if test "$with_pam" = yes ; then
1376 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1379 if test "$with_libxml" = yes ; then
1380 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1383 if test "$with_libxslt" = yes ; then
1384 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1387 if test "$with_lz4" = yes ; then
1388 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1391 if test "$with_zstd" = yes ; then
1392 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1395 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1396 # also, on AIX, we may need to have openssl in LIBS for this step.
1397 if test "$with_ldap" = yes ; then
1399 if test "$PORTNAME" != "win32"; then
1400 AC_CHECK_LIB(ldap, ldap_bind, [],
1401 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1403 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1404 # This test is carried out against libldap.
1405 AC_CHECK_FUNCS([ldap_initialize])
1406 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1407 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1408 # library from a separate OpenLDAP installation). The most reliable
1409 # way to check that is to check for a function introduced in 2.5.
1410 AC_CHECK_FUNC([ldap_verify_credentials],
1411 [thread_safe_libldap=yes],
1412 [thread_safe_libldap=no])
1413 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1414 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1415 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1417 AC_CHECK_LIB(ldap_r, ldap_bind,
1418 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1419 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1420 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1422 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1425 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1426 LDAP_LIBS_FE="-lwldap32"
1427 LDAP_LIBS_BE="-lwldap32"
1431 AC_SUBST(LDAP_LIBS_FE)
1432 AC_SUBST(LDAP_LIBS_BE)
1434 # for contrib/sepgsql
1435 if test "$with_selinux" = yes; then
1436 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1437 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1440 # for contrib/uuid-ossp
1441 if test "$with_uuid" = bsd ; then
1442 # On BSD, the UUID functions are in libc
1443 AC_CHECK_FUNC(uuid_to_string,
1445 [AC_MSG_ERROR([BSD UUID functions are not present])])
1446 elif test "$with_uuid" = e2fs ; then
1447 # On macOS, the UUID functions are in libc
1448 AC_CHECK_FUNC(uuid_generate,
1450 [AC_CHECK_LIB(uuid, uuid_generate,
1451 [UUID_LIBS="-luuid"],
1452 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1453 elif test "$with_uuid" = ossp ; then
1454 AC_CHECK_LIB(ossp-uuid, uuid_export,
1455 [UUID_LIBS="-lossp-uuid"],
1456 [AC_CHECK_LIB(uuid, uuid_export,
1457 [UUID_LIBS="-luuid"],
1458 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1469 AC_CHECK_HEADERS(m4_normalize([
1488 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1489 AC_CHECK_HEADERS(readline/readline.h, [],
1490 [AC_CHECK_HEADERS(readline.h, [],
1491 [AC_MSG_ERROR([readline header not found
1492 If you have readline already installed, see config.log for details on the
1493 failure. It is possible the compiler isn't looking in the proper directory.
1494 Use --without-readline to disable readline support.])])])
1495 AC_CHECK_HEADERS(readline/history.h, [],
1496 [AC_CHECK_HEADERS(history.h, [],
1497 [AC_MSG_ERROR([history header not found
1498 If you have readline already installed, see config.log for details on the
1499 failure. It is possible the compiler isn't looking in the proper directory.
1500 Use --without-readline to disable readline support.])])])
1503 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1504 # Some installations of libedit usurp /usr/include/readline/, which seems
1505 # bad practice, since in combined installations readline will have its headers
1506 # there. We might have to resort to AC_EGREP checks to make sure we found
1507 # the proper header...
1508 AC_CHECK_HEADERS(editline/readline.h, [],
1509 [AC_CHECK_HEADERS(readline.h, [],
1510 [AC_CHECK_HEADERS(readline/readline.h, [],
1511 [AC_MSG_ERROR([readline header not found
1512 If you have libedit already installed, see config.log for details on the
1513 failure. It is possible the compiler isn't looking in the proper directory.
1514 Use --without-readline to disable libedit support.])])])])
1515 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1516 # not be there at all. Hence, don't complain if not found. We must check
1517 # though, since in yet other versions it is an independent header.
1518 AC_CHECK_HEADERS(editline/history.h, [],
1519 [AC_CHECK_HEADERS(history.h, [],
1520 [AC_CHECK_HEADERS(readline/history.h)])])
1523 if test "$with_zlib" = yes; then
1524 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1525 If you have zlib already installed, see config.log for details on the
1526 failure. It is possible the compiler isn't looking in the proper directory.
1527 Use --without-zlib to disable zlib support.])])
1530 PGAC_PATH_PROGS(LZ4, lz4)
1531 if test "$with_lz4" = yes; then
1532 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1535 PGAC_PATH_PROGS(ZSTD, zstd)
1536 if test "$with_zstd" = yes; then
1537 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1540 if test "$with_gssapi" = yes ; then
1541 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1542 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1545 PGAC_PATH_PROGS(OPENSSL, openssl)
1546 if test "$with_ssl" = openssl ; then
1547 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1548 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1551 if test "$with_pam" = yes ; then
1552 AC_CHECK_HEADERS(security/pam_appl.h, [],
1553 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1554 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1557 if test "$with_bsd_auth" = yes ; then
1558 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1561 if test "$with_systemd" = yes ; then
1562 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1565 if test "$with_libxml" = yes ; then
1566 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1569 if test "$with_libxslt" = yes ; then
1570 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1573 if test "$with_ldap" = yes ; then
1574 if test "$PORTNAME" != "win32"; then
1575 AC_CHECK_HEADER(ldap.h, [],
1576 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1579 AC_CHECK_HEADER(winldap.h, [],
1580 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1581 [AC_INCLUDES_DEFAULT
1582 #include <windows.h>
1587 if test "$with_bonjour" = yes ; then
1588 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1589 dnl At some point we might add something like
1590 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1591 dnl but right now, what that would mainly accomplish is to encourage
1592 dnl people to try to use the avahi implementation, which does not work.
1593 dnl If you want to use Apple's own Bonjour code on another platform,
1594 dnl just add -ldns_sd to LIBS manually.
1597 # for contrib/uuid-ossp
1598 if test "$with_uuid" = bsd ; then
1599 AC_CHECK_HEADERS(uuid.h,
1600 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1601 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1602 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1603 elif test "$with_uuid" = e2fs ; then
1604 AC_CHECK_HEADERS(uuid/uuid.h,
1605 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1606 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1607 [AC_CHECK_HEADERS(uuid.h,
1608 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1609 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1610 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1611 elif test "$with_uuid" = ossp ; then
1612 AC_CHECK_HEADERS(ossp/uuid.h,
1613 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1614 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1615 [AC_CHECK_HEADERS(uuid.h,
1616 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1617 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1618 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1621 if test "$PORTNAME" = "win32" ; then
1622 AC_CHECK_HEADERS(crtdefs.h)
1626 ## Types, structures, compiler characteristics
1629 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1632 PGAC_PRINTF_ARCHETYPE
1633 PGAC_C_STATIC_ASSERT
1635 PGAC_C_TYPES_COMPATIBLE
1636 PGAC_C_BUILTIN_CONSTANT_P
1637 PGAC_C_BUILTIN_UNREACHABLE
1638 PGAC_C_COMPUTED_GOTO
1639 PGAC_STRUCT_TIMEZONE
1641 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1642 PGAC_STRUCT_SOCKADDR_SA_LEN
1646 # MSVC doesn't cope well with defining restrict to __restrict, the
1647 # spelling it understands, because it conflicts with
1648 # __declspec(restrict). Therefore we define pg_restrict to the
1649 # appropriate definition, which presumably won't conflict.
1651 # Allow platforms with buggy compilers to force restrict to not be
1652 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1655 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1658 pg_restrict="$ac_cv_c_restrict"
1660 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1661 [Define to keyword to use for C99 restrict support, or to nothing if not
1664 AC_CHECK_TYPES([struct cmsgcred], [], [],
1665 [#include <sys/socket.h>
1666 #include <sys/param.h>
1667 #ifdef HAVE_SYS_UCRED_H
1668 #include <sys/ucred.h>
1671 AC_CHECK_TYPES([struct option], [], [],
1672 [#ifdef HAVE_GETOPT_H
1676 if test "$with_zlib" = yes; then
1677 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1678 # did not). While we could work around the lack of z_streamp, it
1679 # seems unwise to encourage people to use such old zlib versions...
1680 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1681 Use --without-zlib to disable zlib support.])],
1682 [#include <zlib.h>])
1687 # On x86_64, check if we can compile a popcntq instruction
1688 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1689 [pgac_cv_have_x86_64_popcntq],
1690 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1691 [long long x = 1; long long r;
1692 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1693 [pgac_cv_have_x86_64_popcntq=yes],
1694 [pgac_cv_have_x86_64_popcntq=no])])
1695 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1696 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1700 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1701 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1702 [pgac_cv_have_i_constraint__builtin_constant_p],
1703 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1705 addi(int ra, int si)
1708 if (__builtin_constant_p(si))
1709 __asm__ __volatile__(
1710 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1713 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1714 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1715 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1716 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1717 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1718 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1723 # Check largefile support. You might think this is a system service not a
1724 # compiler characteristic, but you'd be wrong. We must check this before
1725 # probing existence of related functions such as fseeko, since the largefile
1726 # defines can affect what is generated for that.
1727 if test "$PORTNAME" != "win32"; then
1729 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1730 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1731 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1732 dnl versions where the feature actually works, it's on by default anyway.
1733 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1736 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1737 AC_CHECK_SIZEOF([off_t])
1739 # If we don't have largefile support, can't handle segsize >= 2GB.
1740 if test "$ac_cv_sizeof_off_t" -lt 8 -a "$segsize" != "1"; then
1741 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1744 AC_CHECK_SIZEOF([bool], [],
1745 [#ifdef HAVE_STDBOOL_H
1746 #include <stdbool.h>
1749 dnl We use <stdbool.h> if we have it and it declares type bool as having
1750 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1751 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1752 AC_DEFINE([PG_USE_STDBOOL], 1,
1753 [Define to 1 to use <stdbool.h> to define type bool.])
1758 ## Functions, global variables
1761 PGAC_VAR_INT_TIMEZONE
1762 PGAC_FUNC_WCSTOMBS_L
1764 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1765 # symbols that that library has no business exposing to the world. Pending
1766 # acquisition of a clue by those developers, ignore libedit (including its
1767 # possible alias of libreadline) while checking for everything else.
1768 LIBS_including_readline="$LIBS"
1769 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1771 AC_CHECK_FUNCS(m4_normalize([
1782 pthread_is_threaded_np
1793 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1794 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1795 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1796 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1797 # We assume that we needn't test all widths of these explicitly:
1798 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1799 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1800 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1801 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1802 # so it needs a different test function.
1803 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1805 # We require 64-bit fseeko() to be available, but run this check anyway
1806 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1809 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1810 # by calling it, 2009-04-02
1811 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1812 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1813 AS_IF([test "$PORTNAME" != "solaris"], [
1814 AC_CHECK_FUNCS(posix_fadvise)
1815 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1818 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1819 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1821 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1822 # won't handle deployment target restrictions on macOS
1823 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1824 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1826 # This is probably only present on macOS, but may as well check always
1827 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1829 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1830 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1831 [#include <machine/vmparam.h>
1832 #include <sys/exec.h>
1834 [PS_STRINGS->ps_nargvstr = 1;
1835 PS_STRINGS->ps_argvstr = "foo";])],
1836 [pgac_cv_var_PS_STRINGS=yes],
1837 [pgac_cv_var_PS_STRINGS=no])])
1838 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1839 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1842 AC_REPLACE_FUNCS(m4_normalize([
1853 if test "$enable_thread_safety" = yes; then
1854 AC_REPLACE_FUNCS(pthread_barrier_wait)
1857 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1858 # Cygwin and (apparently, based on test results) Mingw both
1859 # have a broken strtof(), so substitute its implementation.
1860 # That's not a perfect fix, since it doesn't avoid double-rounding,
1861 # but we have no better options.
1863 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1866 # Similarly, use system's getopt_long() only if system provides struct option.
1867 if test x"$ac_cv_type_struct_option" = xyes ; then
1868 AC_REPLACE_FUNCS([getopt_long])
1870 AC_LIBOBJ(getopt_long)
1873 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1874 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1875 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1879 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1880 # so always use our version on Windows.
1881 if test "$PORTNAME" = "win32"; then
1883 AC_LIBOBJ(getopt_long)
1886 # Win32 (really MinGW) support
1887 if test "$PORTNAME" = "win32"; then
1888 AC_CHECK_FUNCS(_configthreadlocale)
1893 AC_LIBOBJ(win32dlopen)
1895 AC_LIBOBJ(win32error)
1896 AC_LIBOBJ(win32fdatasync)
1897 AC_LIBOBJ(win32getrusage)
1898 AC_LIBOBJ(win32link)
1899 AC_LIBOBJ(win32ntdll)
1900 AC_LIBOBJ(win32pread)
1901 AC_LIBOBJ(win32pwrite)
1902 AC_LIBOBJ(win32security)
1903 AC_LIBOBJ(win32setlocale)
1904 AC_LIBOBJ(win32stat)
1906 # Cygwin needs only a bit of that
1907 if test "$PORTNAME" = "cygwin"; then
1911 AC_CHECK_FUNC(syslog,
1912 [AC_CHECK_HEADER(syslog.h,
1913 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1915 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1916 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1917 [extern int opterr; opterr = 1;])],
1918 [pgac_cv_var_int_opterr=yes],
1919 [pgac_cv_var_int_opterr=no])])
1920 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1921 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1924 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1925 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1926 [extern int optreset; optreset = 1;])],
1927 [pgac_cv_var_int_optreset=yes],
1928 [pgac_cv_var_int_optreset=no])])
1929 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1930 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1933 if test "$with_icu" = yes; then
1934 ac_save_CPPFLAGS=$CPPFLAGS
1935 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1937 # Verify we have ICU's header files
1938 AC_CHECK_HEADER(unicode/ucol.h, [],
1939 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1941 CPPFLAGS=$ac_save_CPPFLAGS
1944 if test "$with_llvm" = yes; then
1945 PGAC_CHECK_LLVM_FUNCTIONS()
1948 # Lastly, restore full LIBS list and check for readline/libedit symbols
1949 LIBS="$LIBS_including_readline"
1951 if test "$with_readline" = yes; then
1952 PGAC_READLINE_VARIABLES
1953 AC_CHECK_FUNCS(m4_normalize([
1955 history_truncate_file
1956 rl_completion_matches
1957 rl_filename_completion_function
1958 rl_reset_screen_size
1964 # This test makes sure that run tests work at all. Sometimes a shared
1965 # library is found by the linker, but the runtime linker can't find it.
1966 # This check should come after all modifications of compiler or linker
1967 # variables, and before any other run tests.
1968 AC_MSG_CHECKING([test program])
1969 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1970 [AC_MSG_RESULT(ok)],
1971 [AC_MSG_RESULT(failed)
1973 Could not execute a simple test program. This may be a problem
1974 related to locating shared libraries. Check the file 'config.log'
1975 for the exact reason.]])],
1976 [AC_MSG_RESULT([cross-compiling])])
1978 # --------------------
1979 # Run tests below here
1980 # --------------------
1982 dnl Check to see if we have a working 64-bit integer type.
1983 dnl Since Postgres 8.4, we no longer support compilers without a working
1984 dnl 64-bit type; but we have to determine whether that type is called
1985 dnl "long int" or "long long int".
1987 PGAC_TYPE_64BIT_INT([long int])
1989 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
1990 pg_int64_type="long int"
1992 PGAC_TYPE_64BIT_INT([long long int])
1993 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1994 pg_int64_type="long long int"
1996 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
2000 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
2001 [Define to the name of a signed 64-bit integer type.])
2003 # Select the printf length modifier that goes with that, too.
2004 if test x"$pg_int64_type" = x"long long int" ; then
2005 INT64_MODIFIER='"ll"'
2007 INT64_MODIFIER='"l"'
2010 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2011 [Define to the appropriate printf length modifier for 64-bit ints.])
2013 # has to be down here, rather than with the other builtins, because
2014 # the test uses PG_INT64_TYPE.
2015 PGAC_C_BUILTIN_OP_OVERFLOW
2017 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2018 AC_CHECK_SIZEOF([void *])
2019 AC_CHECK_SIZEOF([size_t])
2020 AC_CHECK_SIZEOF([long])
2022 # Determine memory alignment requirements for the basic C data types.
2024 AC_CHECK_ALIGNOF(short)
2025 AC_CHECK_ALIGNOF(int)
2026 AC_CHECK_ALIGNOF(long)
2027 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2028 AC_CHECK_ALIGNOF(long long int)
2030 AC_CHECK_ALIGNOF(double)
2032 # Compute maximum alignment of any basic type.
2033 # We assume long's alignment is at least as strong as char, short, or int;
2034 # but we must check long long (if it is being used for int64) and double.
2035 # Note that we intentionally do not consider any types wider than 64 bits,
2036 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2037 # for disk and memory space.
2039 MAX_ALIGNOF=$ac_cv_alignof_long
2040 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2041 MAX_ALIGNOF=$ac_cv_alignof_double
2043 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2044 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2046 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2049 # Some platforms predefine the types int8, int16, etc. Only check
2050 # a (hopefully) representative subset.
2051 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2052 [#include <stdio.h>])
2054 # Some compilers offer a 128-bit integer scalar type.
2055 PGAC_TYPE_128BIT_INT
2057 # Check for various atomic operations now that we have checked how to declare
2059 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2060 PGAC_HAVE_GCC__SYNC_INT32_TAS
2061 PGAC_HAVE_GCC__SYNC_INT32_CAS
2062 PGAC_HAVE_GCC__SYNC_INT64_CAS
2063 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2064 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2067 # Check for x86 cpuid instruction
2068 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2069 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2070 [[unsigned int exx[4] = {0, 0, 0, 0};
2071 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2073 [pgac_cv__get_cpuid="yes"],
2074 [pgac_cv__get_cpuid="no"])])
2075 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2076 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2079 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2080 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2081 [[unsigned int exx[4] = {0, 0, 0, 0};
2082 __get_cpuid(exx[0], 1);
2084 [pgac_cv__cpuid="yes"],
2085 [pgac_cv__cpuid="no"])])
2086 if test x"$pgac_cv__cpuid" = x"yes"; then
2087 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2090 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2092 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2093 # with the default compiler flags. If not, check if adding the -msse4.2
2094 # flag helps. CFLAGS_SSE42 is set to -msse4.2 if that's required.
2095 PGAC_SSE42_CRC32_INTRINSICS([])
2096 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2097 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2099 AC_SUBST(CFLAGS_SSE42)
2101 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2102 # define __SSE4_2__ in that case.
2103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2105 #error __SSE4_2__ not defined
2107 ])], [SSE4_2_TARGETED=1])
2109 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2111 # First check if __crc32c* intrinsics can be used with the default compiler
2112 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2113 # CFLAGS_ARMV8_CRC32C is set if the extra flag is required.
2114 PGAC_ARMV8_CRC32C_INTRINSICS([])
2115 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2116 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2118 AC_SUBST(CFLAGS_ARMV8_CRC32C)
2120 # Select CRC-32C implementation.
2122 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2123 # use the special CRC instructions for calculating CRC-32C. If we're not
2124 # targeting such a processor, but we can nevertheless produce code that uses
2125 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2126 # implementations and select which one to use at runtime, depending on whether
2127 # SSE 4.2 is supported by the processor we're running on.
2129 # Similarly, if we are targeting an ARM processor that has the CRC
2130 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2131 # we're not targeting such a processor, but can nevertheless produce code that
2132 # uses the CRC instructions, compile both, and select at runtime.
2134 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2135 # in the template or configure command line.
2136 if test x"$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
2137 # Use Intel SSE 4.2 if available.
2138 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2141 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2142 # the runtime check.
2143 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2144 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2146 # Use ARM CRC Extension if available.
2147 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_ARMV8_CRC32C" = x""; then
2150 # ARM CRC Extension, with runtime check?
2151 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2152 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2154 # fall back to slicing-by-8 algorithm, which doesn't require any
2155 # special CPU support.
2156 USE_SLICING_BY_8_CRC32C=1
2163 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2164 AC_MSG_CHECKING([which CRC-32C implementation to use])
2165 if test x"$USE_SSE42_CRC32C" = x"1"; then
2166 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2167 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2168 AC_MSG_RESULT(SSE 4.2)
2170 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2171 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2172 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2173 AC_MSG_RESULT(SSE 4.2 with runtime check)
2175 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2176 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2177 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2178 AC_MSG_RESULT(ARMv8 CRC instructions)
2180 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2181 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2182 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2183 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2185 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2186 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2187 AC_MSG_RESULT(slicing-by-8)
2192 AC_SUBST(PG_CRC32C_OBJS)
2195 # Select semaphore implementation type.
2196 if test "$PORTNAME" != "win32"; then
2197 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2198 # Need sem_open for this
2199 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2201 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2202 # Need sem_init for this
2203 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2205 AC_MSG_CHECKING([which semaphore API to use])
2206 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2207 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2208 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2209 sematype="named POSIX"
2211 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2212 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2213 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2214 sematype="unnamed POSIX"
2216 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2217 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2221 AC_MSG_RESULT([$sematype])
2223 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2224 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2228 # Select shared-memory implementation type.
2229 if test "$PORTNAME" != "win32"; then
2230 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2231 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2233 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2234 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2237 # Select random number source. If a TLS library is used then it will be the
2238 # first choice, else the native platform sources (Windows API or /dev/urandom)
2240 AC_MSG_CHECKING([which random number source to use])
2241 if test x"$with_ssl" = x"openssl" ; then
2242 AC_MSG_RESULT([OpenSSL])
2243 elif test x"$PORTNAME" = x"win32" ; then
2244 AC_MSG_RESULT([Windows native])
2245 elif test x"$cross_compiling" = x"yes"; then
2246 AC_MSG_RESULT([assuming /dev/urandom])
2248 AC_MSG_RESULT([/dev/urandom])
2249 AC_CHECK_FILE([/dev/urandom], [], [])
2251 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2253 no source of strong random numbers was found
2254 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2258 # If not set in template file, set bytes to use libc memset()
2259 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2260 MEMSET_LOOP_LIMIT=1024
2262 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2265 if test "$enable_nls" = yes ; then
2269 # Check for Tcl configuration script tclConfig.sh
2270 if test "$with_tcl" = yes; then
2271 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2272 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2273 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2274 if test "$TCL_SHARED_BUILD" != 1; then
2275 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2276 Use --without-tcl to disable building PL/Tcl.])
2278 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2279 ac_save_CPPFLAGS=$CPPFLAGS
2280 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2281 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2282 CPPFLAGS=$ac_save_CPPFLAGS
2285 # check for <perl.h>
2286 if test "$with_perl" = yes; then
2287 ac_save_CPPFLAGS=$CPPFLAGS
2288 CPPFLAGS="$CPPFLAGS $perl_includespec"
2289 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2290 [#include <EXTERN.h>])
2291 # While we're at it, check that we can link to libperl.
2292 # On most platforms, if perl.h is there then libperl.so will be too, but at
2293 # this writing Debian packages them separately. There is no known reason to
2294 # waste cycles on separate probes for the Tcl or Python libraries, though.
2295 # On some Red Hat platforms, the link attempt can fail if we don't use
2296 # CFLAGS_SL while building the test program.
2297 ac_save_CFLAGS=$CFLAGS
2298 CFLAGS="$CFLAGS $CFLAGS_SL"
2299 pgac_save_LIBS=$LIBS
2300 LIBS="$perl_embed_ldflags"
2301 AC_MSG_CHECKING([for libperl])
2302 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2305 ], [perl_alloc();])],
2306 [AC_MSG_RESULT(yes)],
2308 AC_MSG_ERROR([libperl library is required for Perl])])
2309 LIBS=$pgac_save_LIBS
2310 CFLAGS=$ac_save_CFLAGS
2311 CPPFLAGS=$ac_save_CPPFLAGS
2314 # check for <Python.h>
2315 if test "$with_python" = yes; then
2316 ac_save_CPPFLAGS=$CPPFLAGS
2317 CPPFLAGS="$python_includespec $CPPFLAGS"
2318 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2319 CPPFLAGS=$ac_save_CPPFLAGS
2323 # Check for documentation-building tools
2325 PGAC_PATH_PROGS(XMLLINT, xmllint)
2326 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2327 PGAC_PATH_PROGS(FOP, fop)
2328 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2331 # Check for test tools
2333 if test "$enable_tap_tests" = yes; then
2334 # Make sure we know where prove is.
2335 PGAC_PATH_PROGS(PROVE, prove)
2336 if test -z "$PROVE"; then
2337 AC_MSG_ERROR([prove not found])
2339 # Check for necessary Perl modules. You might think we should use
2340 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2341 # installation than perl, eg on MSys, so we have to check using prove.
2342 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2343 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2344 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2345 if test $? -eq 0; then
2346 # log the module version details, but don't show them interactively
2347 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2350 # on failure, though, show the results to the user
2351 AC_MSG_RESULT([$modulestderr])
2352 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2356 # If compiler will take -Wl,--as-needed (or various platform-specific
2357 # spellings thereof) then add that to LDFLAGS. This is much easier than
2358 # trying to filter LIBS to the minimum for each executable.
2359 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2360 # libreadline; therefore we postpone testing it until we know what library
2361 # dependencies readline has. The test code will try to link with $LIBS.
2362 if test "$with_readline" = yes; then
2363 link_test_func=readline
2368 if test "$PORTNAME" = "darwin"; then
2369 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2370 elif test "$PORTNAME" = "openbsd"; then
2371 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2373 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2376 # Create compiler version string
2377 if test x"$GCC" = x"yes" ; then
2378 cc_string=`${CC} --version | sed q`
2379 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2380 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2381 cc_string=`${CC} -V 2>&1 | sed q`
2386 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2387 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2388 [A string containing the version number, platform, and C compiler])
2390 # Supply a numeric version string for use by 3rd party add-ons
2391 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2392 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2393 $AWK '{printf "%d%04d", $1, $2}'`"]
2394 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2395 AC_SUBST(PG_VERSION_NUM)
2397 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2398 # literally, so that it's possible to override it at build time using
2399 # a command like "make ... PG_SYSROOT=path". This has to be done after
2400 # we've finished all configure checks that depend on CPPFLAGS.
2401 # The same for LDFLAGS, too.
2402 if test x"$PG_SYSROOT" != x; then
2403 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2404 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2406 AC_SUBST(PG_SYSROOT)
2409 # Begin output steps
2411 AC_MSG_NOTICE([using compiler=$cc_string])
2412 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2413 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2414 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2415 # Currently only used when LLVM is used
2416 if test "$with_llvm" = yes ; then
2417 AC_MSG_NOTICE([using CXX=$CXX])
2418 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2419 AC_MSG_NOTICE([using CLANG=$CLANG])
2420 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2421 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2424 # prepare build tree if outside source tree
2425 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2426 # Note 2: /bin/pwd might be better than shell's built-in at getting
2427 # a symlink-free name.
2428 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2432 if test "$no_create" != yes; then
2433 _AS_ECHO_N([preparing build tree... ])
2434 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2435 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2436 || AC_MSG_ERROR(failed)
2440 AC_SUBST(vpath_build)
2443 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2446 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2447 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2448 src/include/pg_config_os.h:src/include/port/${template}.h
2449 src/Makefile.port:src/makefiles/Makefile.${template}
2452 if test "$PORTNAME" = "win32"; then
2453 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2454 # Links sometimes fail undetected on Mingw -
2455 # so here we detect it and warn the user
2456 for FILE in $CONFIG_LINKS
2458 # test -e works for symlinks in the MinGW console
2459 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2464 AC_CONFIG_HEADERS([src/include/pg_config.h],
2466 # Update timestamp for pg_config.h (see Makefile.global)
2467 echo >src/include/stamp-h
2470 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2472 # Update timestamp for pg_config_ext.h (see Makefile.global)
2473 echo >src/include/stamp-ext-h
2476 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2477 [echo >src/interfaces/ecpg/include/stamp-h])
2481 # Ensure that any meson build directories would reconfigure and see that
2482 # there's a conflicting in-tree build and can error out.
2483 if test "$vpath_build"="no"; then