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], [17devel], [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) 1996-2024, 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 PGAC_ARG_BOOL(enable, injection-points, no, [enable injection points (for testing)],
257 [AC_DEFINE([USE_INJECTION_POINTS], 1, [Define to 1 to build with injection points. (--enable-injection-points)])])
258 AC_SUBST(enable_injection_points)
263 AC_MSG_CHECKING([for block size])
264 PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],
265 [blocksize=$withval],
274 *) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])
276 AC_MSG_RESULT([${blocksize}kB])
278 AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [
279 Size of a disk block --- this also limits the size of a tuple. You
280 can set it bigger if you need bigger tuples (although TOAST should
281 reduce the need to have large tuples, since fields can be spread
282 across multiple tuples).
284 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
285 is currently 2^15 (32768). This is determined by the 15-bit widths
286 of the lp_off and lp_len fields in ItemIdData (see
287 include/storage/itemid.h).
289 Changing BLCKSZ requires an initdb.
293 # Relation segment size
295 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
298 PGAC_ARG_REQ(with, segsize-blocks, [SEGSIZE_BLOCKS], [set table segment size in blocks [0]],
299 [segsize_blocks=$withval],
302 # If --with-segsize-blocks is non-zero, it is used, --with-segsize
303 # otherwise. segsize-blocks is only really useful for developers wanting to
304 # test segment related code. Warn if both are used.
305 if test $segsize_blocks -ne 0 -a $segsize -ne 1; then
306 AC_MSG_WARN([both --with-segsize and --with-segsize-blocks specified, --with-segsize-blocks wins])
309 AC_MSG_CHECKING([for segment size])
310 if test $segsize_blocks -eq 0; then
311 # this expression is set up to avoid unnecessary integer overflow
312 # blocksize is already guaranteed to be a factor of 1024
313 RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`
314 test $? -eq 0 || exit 1
315 AC_MSG_RESULT([${segsize}GB])
317 RELSEG_SIZE=$segsize_blocks
318 AC_MSG_RESULT([${RELSEG_SIZE} blocks])
321 AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [
322 RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
323 Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
324 relations bigger than that are divided into multiple files.
326 RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.
327 This is often 2 GB or 4GB in a 32-bit operating system, unless you
328 have large file support enabled. By default, we make the limit 1 GB
329 to avoid any possible integer-overflow problems within the OS.
330 A limit smaller than necessary only means we divide a large
331 relation into more chunks than necessary, so it seems best to err
332 in the direction of a small limit.
334 A power-of-2 value is recommended to save a few cycles in md.c,
335 but is not absolutely required.
337 Changing RELSEG_SIZE requires an initdb.
343 AC_MSG_CHECKING([for WAL block size])
344 PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],
345 [wal_blocksize=$withval],
347 case ${wal_blocksize} in
348 1) XLOG_BLCKSZ=1024;;
349 2) XLOG_BLCKSZ=2048;;
350 4) XLOG_BLCKSZ=4096;;
351 8) XLOG_BLCKSZ=8192;;
352 16) XLOG_BLCKSZ=16384;;
353 32) XLOG_BLCKSZ=32768;;
354 64) XLOG_BLCKSZ=65536;;
355 *) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])
357 AC_MSG_RESULT([${wal_blocksize}kB])
359 AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [
360 Size of a WAL file block. This need have no particular relation to BLCKSZ.
361 XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
362 XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
363 buffers, else direct I/O may fail.
365 Changing XLOG_BLCKSZ requires an initdb.
372 # For historical reasons you can also use --with-CC to specify the C compiler
373 # to use, although the standard way to do this is to set the CC environment
375 PGAC_ARG_REQ(with, CC, [CMD], [set compiler (deprecated)], [CC=$with_CC])
378 aix) pgac_cc_list="gcc xlc"; pgac_cxx_list="g++ xlC";;
379 *) pgac_cc_list="gcc cc"; pgac_cxx_list="g++ c++";;
382 AC_PROG_CC([$pgac_cc_list])
385 # Error out if the compiler does not support C99, as the codebase
387 if test "$ac_cv_prog_cc_c99" = no; then
388 AC_MSG_ERROR([C compiler "$CC" does not support C99])
391 AC_PROG_CXX([$pgac_cxx_list])
393 # Check if it's Intel's compiler, which (usually) pretends to be gcc,
394 # but has idiosyncrasies of its own. We assume icc will define
395 # __INTEL_COMPILER regardless of CFLAGS.
396 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
398 @%:@endif])], [ICC=yes], [ICC=no])
400 # Check if it's Sun Studio compiler. We assume that
401 # __SUNPRO_C will be defined for Sun Studio compilers
402 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
404 @%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
406 AC_SUBST(SUN_STUDIO_CC)
412 # Checked early because subsequent tests depend on it.
413 PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],
414 [AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])
416 dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions
417 AS_IF([test "$with_llvm" = yes], [
428 . "$srcdir/src/template/$template" || exit
430 # C[XX]FLAGS are selected so:
431 # If the user specifies something in the environment, that is used.
432 # else: If the template file set something, that is used.
433 # else: If coverage was enabled, don't set anything.
434 # else: If the compiler is GCC, then we use -O2.
435 # else: If the compiler is something else, then we use -O, unless debugging.
437 if test "$ac_env_CFLAGS_set" = set; then
438 CFLAGS=$ac_env_CFLAGS_value
439 elif test "${CFLAGS+set}" = set; then
440 : # (keep what template set)
441 elif test "$enable_coverage" = yes; then
442 : # no optimization by default
443 elif test "$GCC" = yes; then
446 # if the user selected debug mode, don't use -O
447 if test "$enable_debug" != yes; then
452 if test "$ac_env_CXXFLAGS_set" = set; then
453 CXXFLAGS=$ac_env_CXXFLAGS_value
454 elif test "${CXXFLAGS+set}" = set; then
455 : # (keep what template set)
456 elif test "$enable_coverage" = yes; then
457 : # no optimization by default
458 elif test "$GCC" = yes; then
461 # if the user selected debug mode, don't use -O
462 if test "$enable_debug" != yes; then
467 # When generating bitcode (for inlining) we always want to use -O2
468 # even when --enable-debug is specified. The bitcode is not going to
469 # be used for line-by-line debugging, and JIT inlining doesn't work
470 # without at least -O1 (otherwise clang will emit 'noinline'
471 # attributes everywhere), which is bad for testing. Still allow the
472 # environment to override if done explicitly.
473 if test "$ac_env_BITCODE_CFLAGS_set" = set; then
474 BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value
476 BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"
478 if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then
479 BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value
481 BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"
484 # C[XX]FLAGS we determined above will be added back at the end
487 user_CXXFLAGS=$CXXFLAGS
489 user_BITCODE_CFLAGS=$BITCODE_CFLAGS
491 user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS
494 # set CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE from the environment, if present
495 if test "$ac_env_CFLAGS_UNROLL_LOOPS_set" = set; then
496 CFLAGS_UNROLL_LOOPS=$ac_env_CFLAGS_UNROLL_LOOPS_value
498 if test "$ac_env_CFLAGS_VECTORIZE_set" = set; then
499 CFLAGS_VECTORIZE=$ac_env_CFLAGS_VECTORIZE_value
502 # Some versions of GCC support some additional useful warning flags.
503 # Check whether they are supported, and add them to CFLAGS if so.
504 # ICC pretends to be GCC but it's lying; it doesn't support these flags,
505 # but has its own. Also check other compiler-specific flags here.
507 if test "$GCC" = yes -a "$ICC" = no; then
508 CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
509 CXXFLAGS="-Wall -Wpointer-arith"
510 # These work in some but not all gcc versions
512 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
513 # -Wdeclaration-after-statement isn't applicable for C++. Specific C files
514 # disable it, so AC_SUBST the negative form.
515 PERMIT_DECLARATION_AFTER_STATEMENT=
516 if test x"$save_CFLAGS" != x"$CFLAGS"; then
517 PERMIT_DECLARATION_AFTER_STATEMENT=-Wno-declaration-after-statement
519 AC_SUBST(PERMIT_DECLARATION_AFTER_STATEMENT)
520 # Really don't want VLAs to be used in our dialect of C
521 PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])
522 # On macOS, complain about usage of symbols newer than the deployment target
523 PGAC_PROG_CC_CFLAGS_OPT([-Werror=unguarded-availability-new])
524 PGAC_PROG_CXX_CFLAGS_OPT([-Werror=unguarded-availability-new])
525 # -Wvla is not applicable for C++
526 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
527 PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])
528 PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])
529 PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])
530 PGAC_PROG_CC_CFLAGS_OPT([-Wimplicit-fallthrough=3])
531 PGAC_PROG_CXX_CFLAGS_OPT([-Wimplicit-fallthrough=3])
532 PGAC_PROG_CC_CFLAGS_OPT([-Wcast-function-type])
533 PGAC_PROG_CXX_CFLAGS_OPT([-Wcast-function-type])
534 PGAC_PROG_CC_CFLAGS_OPT([-Wshadow=compatible-local])
535 PGAC_PROG_CXX_CFLAGS_OPT([-Wshadow=compatible-local])
536 # This was included in -Wall/-Wformat in older GCC versions
537 PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
538 PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])
539 # Disable strict-aliasing rules; needed for gcc 3.3+
540 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
541 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
542 # Disable optimizations that assume no overflow; needed for gcc 4.3+
543 PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
544 PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])
545 # Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
546 PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
547 PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])
548 # Optimization flags for specific files that benefit from loop unrolling
549 PGAC_PROG_CC_VAR_OPT(CFLAGS_UNROLL_LOOPS, [-funroll-loops])
550 # Optimization flags for specific files that benefit from vectorization
551 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize])
553 # The following tests want to suppress various unhelpful warnings by adding
554 # -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo
555 # switches, so we have to test for the positive form and if that works,
556 # add the negative form. Note that tests of this form typically need to
557 # be duplicated in the BITCODE_CFLAGS setup stanza below.
559 # Suppress clang's unhelpful unused-command-line-argument warnings.
561 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
562 if test -n "$NOT_THE_CFLAGS"; then
563 CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
565 # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
566 # of warnings when building plperl because of usages in the Perl headers.
568 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
569 if test -n "$NOT_THE_CFLAGS"; then
570 CFLAGS="$CFLAGS -Wno-compound-token-split-by-macro"
572 # Similarly disable useless truncation warnings from gcc 8+
574 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])
575 if test -n "$NOT_THE_CFLAGS"; then
576 CFLAGS="$CFLAGS -Wno-format-truncation"
579 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])
580 if test -n "$NOT_THE_CFLAGS"; then
581 CFLAGS="$CFLAGS -Wno-stringop-truncation"
583 # Suppress clang 16's strict warnings about function casts
585 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcast-function-type-strict])
586 if test -n "$NOT_THE_CFLAGS"; then
587 CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
589 elif test "$ICC" = yes; then
590 # Intel's compiler has a bug/misoptimization in checking for
591 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
592 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
593 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
594 # Make sure strict aliasing is off (though this is said to be the default)
595 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
596 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
597 elif test "$PORTNAME" = "aix"; then
598 # AIX's xlc has to have strict aliasing turned off too
599 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
600 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
601 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
602 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
605 # If the compiler knows how to hide symbols, add the switch needed for that to
606 # CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE.
608 # This is done separately from the above because -fvisibility is supported by
609 # quite a few different compilers, making the required repetition bothersome.
611 # We might need to add a separate test to check if
612 # __attribute__((visibility("hidden"))) is supported, if we encounter a
613 # compiler that supports one of the supported variants of -fvisibility=hidden
614 # but uses a different syntax to mark a symbol as exported.
615 if test "$GCC" = yes -o "$SUN_STUDIO_CC" = yes ; then
616 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden])
617 # For C++ we additionally want -fvisibility-inlines-hidden
618 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden])
619 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden])
620 have_visibility_attribute=$pgac_cv_prog_CC_cflags__fvisibility_hidden
621 elif test "$PORTNAME" = "aix"; then
622 # Note that xlc accepts -fvisibility=hidden as a file.
623 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-qvisibility=hidden])
624 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-qvisibility=hidden])
625 have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
626 # Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
627 # all extension module symbols to be exported.
628 if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
629 CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
633 if test "$have_visibility_attribute" = "yes"; then
634 AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1,
635 [Define to 1 if your compiler knows the visibility("hidden") attribute.])
638 AC_SUBST(CFLAGS_UNROLL_LOOPS)
639 AC_SUBST(CFLAGS_VECTORIZE)
640 AC_SUBST(CFLAGS_SL_MODULE)
641 AC_SUBST(CXXFLAGS_SL_MODULE)
643 # Determine flags used to emit bitcode for JIT inlining.
644 # 1. We must duplicate any behaviour-changing compiler flags used above,
645 # to keep compatibility with the compiler used for normal Postgres code.
646 # 2. We don't bother to duplicate extra-warnings switches --- seeing a
647 # warning in the main build is enough.
648 # 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.
649 if test "$with_llvm" = yes ; then
650 CLANGXX="$CLANG -xc++"
652 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
653 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
654 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
655 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
656 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
657 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
659 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])
660 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])
663 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
664 if test -n "$NOT_THE_CFLAGS"; then
665 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
668 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
669 if test -n "$NOT_THE_CFLAGS"; then
670 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
673 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
674 if test -n "$NOT_THE_CFLAGS"; then
675 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
678 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
679 if test -n "$NOT_THE_CFLAGS"; then
680 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
684 # supply -g if --enable-debug
685 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
689 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
690 CXXFLAGS="$CXXFLAGS -g"
693 # enable code coverage if --enable-coverage
694 if test "$enable_coverage" = yes; then
695 if test "$GCC" = yes; then
696 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
697 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
699 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
703 # enable profiling if --enable-profiling
704 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
705 if test "$GCC" = yes; then
706 AC_DEFINE([PROFILE_PID_DIR], 1,
707 [Define to 1 to allow profiling output to be saved separately for each process.])
708 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
709 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
711 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
715 # On Solaris, we need this #define to get POSIX-conforming versions
716 # of many interfaces (sigwait, getpwuid_r, ...).
717 if test "$PORTNAME" = "solaris"; then
718 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
721 # We already have this in Makefile.win32, but configure needs it too
722 if test "$PORTNAME" = "win32"; then
723 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
726 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
727 # user-specified flags (if any) at the end. This lets users override
728 # the automatic additions.
729 CFLAGS="$CFLAGS $user_CFLAGS"
730 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
731 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
732 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
734 AC_SUBST(BITCODE_CFLAGS)
735 AC_SUBST(BITCODE_CXXFLAGS)
737 # The template file must set up CFLAGS_SL; we don't support user override
740 # Check if the compiler still works with the final flag settings
741 # (note, we're not checking that for CXX, which is optional)
742 AC_MSG_CHECKING([whether the C compiler still works])
743 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
744 [AC_MSG_RESULT(yes)],
746 AC_MSG_ERROR([cannot proceed])])
748 # Defend against gcc -ffast-math
749 if test "$GCC" = yes; then
750 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
752 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
755 # Defend against clang being used on x86-32 without SSE2 enabled. As current
756 # versions of clang do not understand -fexcess-precision=standard, the use of
757 # x87 floating point operations leads to problems like isinf possibly returning
758 # false for a value that is infinite when converted from the 80bit register to
759 # the 8byte memory representation.
761 # Only perform the test if the compiler doesn't understand
762 # -fexcess-precision=standard, that way a potentially fixed compiler will work
764 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
765 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
766 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
770 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
778 # Set up TAS assembly code if needed; the template file has now had its
779 # chance to request this.
781 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
783 if test "$need_tas" = yes ; then
790 AC_SUBST(DLSUFFIX)dnl
791 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
792 [Define to the file name extension of dynamically-loadable modules.])
795 # Set up pkg_config in case we need it below
800 # Automatic dependency tracking
802 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
808 # Enable assert checks
810 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
811 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
812 [Define to 1 to build with assertion checks. (--enable-cassert)])])
816 # Include directories
819 IFS="${IFS}${PATH_SEPARATOR}"
820 # SRCH_INC comes from the template file
821 for dir in $with_includes $SRCH_INC; do
822 if test -d "$dir"; then
823 INCLUDES="$INCLUDES -I$dir"
825 AC_MSG_WARN([*** Include directory $dir does not exist.])
833 # Library directories
836 IFS="${IFS}${PATH_SEPARATOR}"
837 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
838 for dir in $LIBRARY_DIRS $SRCH_LIB; do
839 if test -d "$dir"; then
840 LIBDIRS="$LIBDIRS -L$dir"
842 AC_MSG_WARN([*** Library directory $dir does not exist.])
850 AC_MSG_CHECKING([whether to build with ICU support])
851 PGAC_ARG_BOOL(with, icu, yes, [build without ICU support],
852 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
853 AC_MSG_RESULT([$with_icu])
856 if test "$with_icu" = yes; then
857 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n, [],
858 [AC_MSG_ERROR([ICU library not found
859 If you have ICU already installed, see config.log for details on the
860 failure. It is possible the compiler isn't looking in the proper directory.
861 Use --without-icu to disable ICU support.])])
865 # Optionally build Tcl modules (PL/Tcl)
867 AC_MSG_CHECKING([whether to build with Tcl])
868 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
869 AC_MSG_RESULT([$with_tcl])
872 # We see if the path to the Tcl/Tk configuration scripts is specified.
873 # This will override the use of tclsh to find the paths to search.
875 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
878 # Optionally build Perl modules (PL/Perl)
880 AC_MSG_CHECKING([whether to build Perl modules])
881 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
882 AC_MSG_RESULT([$with_perl])
886 # Optionally build Python modules (PL/Python)
888 AC_MSG_CHECKING([whether to build Python modules])
889 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
890 AC_MSG_RESULT([$with_python])
891 AC_SUBST(with_python)
896 AC_MSG_CHECKING([whether to build with GSSAPI support])
897 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
899 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
900 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
902 AC_MSG_RESULT([$with_gssapi])
903 AC_SUBST(with_gssapi)
910 # Kerberos configuration parameters
912 PGAC_ARG_REQ(with, krb-srvnam,
913 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
915 [with_krb_srvnam="postgres"])
916 AC_SUBST(with_krb_srvnam)
917 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
918 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
924 AC_MSG_CHECKING([whether to build with PAM support])
925 PGAC_ARG_BOOL(with, pam, no,
926 [build with PAM support],
927 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
928 AC_MSG_RESULT([$with_pam])
934 AC_MSG_CHECKING([whether to build with BSD Authentication support])
935 PGAC_ARG_BOOL(with, bsd-auth, no,
936 [build with BSD Authentication support],
937 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
938 AC_MSG_RESULT([$with_bsd_auth])
944 AC_MSG_CHECKING([whether to build with LDAP support])
945 PGAC_ARG_BOOL(with, ldap, no,
946 [build with LDAP support],
947 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
948 AC_MSG_RESULT([$with_ldap])
955 AC_MSG_CHECKING([whether to build with Bonjour support])
956 PGAC_ARG_BOOL(with, bonjour, no,
957 [build with Bonjour support],
958 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
959 AC_MSG_RESULT([$with_bonjour])
965 AC_MSG_CHECKING([whether to build with SELinux support])
966 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
967 AC_SUBST(with_selinux)
968 AC_MSG_RESULT([$with_selinux])
973 AC_MSG_CHECKING([whether to build with systemd support])
974 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
975 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
976 AC_SUBST(with_systemd)
977 AC_MSG_RESULT([$with_systemd])
982 PGAC_ARG_BOOL(with, readline, yes,
983 [do not use GNU Readline nor BSD Libedit for editing])
984 # readline on MinGW has problems with backslashes in psql and other bugs.
985 # This is particularly a problem with non-US code pages.
986 # Therefore disable its use until we understand the cause. 2004-07-20
987 if test "$PORTNAME" = "win32"; then
988 if test "$with_readline" = yes; then
989 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
993 AC_SUBST(with_readline)
999 PGAC_ARG_BOOL(with, libedit-preferred, no,
1000 [prefer BSD Libedit over GNU Readline])
1006 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
1007 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
1008 # UUID library. More than one of these might be present on a given platform,
1009 # so we make the user say which one she wants.
1011 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
1012 if test x"$with_uuid" = x"" ; then
1015 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
1016 if test "$with_ossp_uuid" = yes ; then
1020 if test "$with_uuid" != no ; then
1021 if test "$with_uuid" = bsd ; then
1022 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
1023 elif test "$with_uuid" = e2fs ; then
1024 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1025 elif test "$with_uuid" = ossp ; then
1026 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1028 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1037 AC_MSG_CHECKING([whether to build with XML support])
1038 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1039 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1040 AC_MSG_RESULT([$with_libxml])
1041 AC_SUBST(with_libxml)
1043 if test "$with_libxml" = yes ; then
1044 # Check pkg-config, then xml2-config. But for backwards compatibility,
1045 # setting XML2_CONFIG overrides pkg-config.
1046 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1047 have_libxml2_pkg_config=no
1048 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1049 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1050 [have_libxml2_pkg_config=yes], [# do nothing])
1052 if test "$have_libxml2_pkg_config" = no ; then
1053 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1054 if test -n "$XML2_CONFIG"; then
1055 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1056 XML2_LIBS=`$XML2_CONFIG --libs`
1059 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1060 for pgac_option in $XML2_CFLAGS; do
1061 case $pgac_option in
1062 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1065 for pgac_option in $XML2_LIBS; do
1066 case $pgac_option in
1067 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1076 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1077 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1080 AC_SUBST(with_libxslt)
1085 PGAC_ARG_REQ(with, system-tzdata,
1086 [DIR], [use system time zone data in DIR])
1087 AC_SUBST(with_system_tzdata)
1092 PGAC_ARG_BOOL(with, zlib, yes,
1099 AC_MSG_CHECKING([whether to build with LZ4 support])
1100 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1101 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1102 AC_MSG_RESULT([$with_lz4])
1105 if test "$with_lz4" = yes; then
1106 PKG_CHECK_MODULES(LZ4, liblz4)
1107 # We only care about -I, -D, and -L switches;
1108 # note that -llz4 will be added by AC_CHECK_LIB below.
1109 for pgac_option in $LZ4_CFLAGS; do
1110 case $pgac_option in
1111 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1114 for pgac_option in $LZ4_LIBS; do
1115 case $pgac_option in
1116 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1124 AC_MSG_CHECKING([whether to build with ZSTD support])
1125 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1126 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1127 AC_MSG_RESULT([$with_zstd])
1130 if test "$with_zstd" = yes; then
1131 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1132 # We only care about -I, -D, and -L switches;
1133 # note that -lzstd will be added by AC_CHECK_LIB below.
1134 for pgac_option in $ZSTD_CFLAGS; do
1135 case $pgac_option in
1136 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1139 for pgac_option in $ZSTD_LIBS; do
1140 case $pgac_option in
1141 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1149 CPPFLAGS="$CPPFLAGS $INCLUDES"
1150 LDFLAGS="$LDFLAGS $LIBDIRS"
1152 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1153 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1156 AC_CHECK_TOOL(AR, ar, ar)
1157 if test "$PORTNAME" = "win32"; then
1158 AC_CHECK_TOOL(WINDRES, windres, windres)
1162 # When Autoconf chooses install-sh as install program it tries to generate
1163 # a relative path to it in each makefile where it substitutes it. This clashes
1164 # with our Makefile.global concept. This workaround helps.
1166 *install-sh*) install_bin='';;
1167 *) install_bin=$INSTALL;;
1169 AC_SUBST(install_bin)
1171 PGAC_PATH_PROGS(TAR, tar)
1174 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1175 # a relative path to it in each makefile where it substitutes it. This clashes
1176 # with our Makefile.global concept. This workaround helps.
1178 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1185 if test "$with_perl" = yes; then
1186 if test -z "$PERL"; then
1187 AC_MSG_ERROR([Perl not found])
1189 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1190 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1191 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1192 You might have to rebuild your Perl installation. Refer to the
1193 documentation for details. Use --without-perl to disable building
1196 # On most platforms, archlibexp is also where the Perl include files live ...
1197 perl_includespec="-I$perl_archlibexp/CORE"
1198 # ... but on newer macOS versions, we must use -iwithsysroot to look
1200 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1201 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1202 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1205 AC_SUBST(perl_includespec)dnl
1206 PGAC_CHECK_PERL_EMBED_CCFLAGS
1207 PGAC_CHECK_PERL_EMBED_LDFLAGS
1210 if test "$with_python" = yes; then
1212 PGAC_CHECK_PYTHON_EMBED_SETUP
1215 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1216 PGAC_PATH_PROGS(ZIC, zic)
1217 if test -z "$ZIC"; then
1219 When cross-compiling, either use the option --with-system-tzdata to use
1220 existing time-zone data, or set the environment variable ZIC to a zic
1221 program to use during the build.])
1228 # For each platform, we need to know about any special compile and link
1229 # libraries, and whether the normal C function names are thread-safe.
1230 # WIN32 doesn't need the pthread tests; it always uses threads
1232 # These tests are run before the library-tests, because linking with the
1233 # other libraries can pull in the pthread functions as a side-effect. We
1234 # want to use the -pthread or similar flags directly, and not rely on
1235 # the side-effects of linking with some other library.
1237 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1238 dnl invocation below is the first one in the script, and autoconf generates
1239 dnl additional code for that, which must not be inside the if-block. AS_IF
1240 dnl knows how to do that.
1241 AS_IF([test "$PORTNAME" != "win32"],
1243 AX_PTHREAD # set thread flags
1245 # Some platforms use these, so just define them. They can't hurt if they
1246 # are not supported.
1247 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1249 # Check for *_r functions
1252 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1253 LIBS="$LIBS $PTHREAD_LIBS"
1255 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1256 pthread.h not found])])
1258 AC_CHECK_FUNCS([strerror_r])
1260 # Do test here with the proper thread flags
1261 PGAC_FUNC_STRERROR_R_INT
1267 # do not use values from template file
1272 AC_SUBST(PTHREAD_CFLAGS)
1273 AC_SUBST(PTHREAD_LIBS)
1279 ## Most libraries are included only if they demonstrably provide a function
1280 ## we need, but libm is an exception: always include it, because there are
1281 ## too many compilers that play cute optimization games that will break
1282 ## probes for standard functions such as pow().
1285 AC_CHECK_LIB(m, main)
1286 AC_SEARCH_LIBS(setproctitle, util)
1287 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1288 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1289 # required. Just checking for dlsym() ought to suffice.
1290 AC_SEARCH_LIBS(dlsym, dl)
1291 AC_SEARCH_LIBS(socket, [socket ws2_32])
1292 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1293 AC_SEARCH_LIBS(shm_open, rt)
1294 AC_SEARCH_LIBS(shm_unlink, rt)
1295 AC_SEARCH_LIBS(clock_gettime, rt)
1297 AC_SEARCH_LIBS(shmget, cygipc)
1299 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1301 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1303 if test "$with_readline" = yes; then
1305 if test x"$pgac_cv_check_readline" = x"no"; then
1306 AC_MSG_ERROR([readline library not found
1307 If you have readline already installed, see config.log for details on the
1308 failure. It is possible the compiler isn't looking in the proper directory.
1309 Use --without-readline to disable readline support.])
1313 if test "$with_zlib" = yes; then
1314 AC_CHECK_LIB(z, inflate, [],
1315 [AC_MSG_ERROR([zlib library not found
1316 If you have zlib already installed, see config.log for details on the
1317 failure. It is possible the compiler isn't looking in the proper directory.
1318 Use --without-zlib to disable zlib support.])])
1321 if test "$enable_spinlocks" = yes; then
1322 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1325 *** Not using spinlocks will cause poor performance.])
1328 if test "$enable_atomics" = yes; then
1329 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1332 *** Not using atomic operations will cause poor performance.])
1335 if test "$with_gssapi" = yes ; then
1336 if test "$PORTNAME" != "win32"; then
1337 AC_SEARCH_LIBS(gss_store_cred_into, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1338 [AC_MSG_ERROR([could not find function 'gss_store_cred_into' required for GSSAPI])])
1340 LIBS="$LIBS -lgssapi32"
1347 # There is currently only one supported SSL/TLS library: OpenSSL.
1349 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1350 if test x"$with_ssl" = x"" ; then
1353 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1354 if test "$with_openssl" = yes ; then
1358 if test "$with_ssl" = openssl ; then
1360 # Minimum required OpenSSL version is 1.0.2
1361 AC_DEFINE(OPENSSL_API_COMPAT, [0x10002000L],
1362 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1363 if test "$PORTNAME" != "win32"; then
1364 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1365 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1367 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1368 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1370 # Function introduced in OpenSSL 1.0.2, not in LibreSSL.
1371 AC_CHECK_FUNCS([SSL_CTX_set_cert_cb])
1372 # Functions introduced in OpenSSL 1.1.0. We used to check for
1373 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1374 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1375 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1377 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1378 # OpenSSL versions before 1.1.0 required setting callback functions, for
1379 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1380 # function was removed.
1381 AC_CHECK_FUNCS([CRYPTO_lock])
1382 # Function introduced in OpenSSL 1.1.1.
1383 AC_CHECK_FUNCS([X509_get_signature_info])
1384 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1385 elif test "$with_ssl" != no ; then
1386 AC_MSG_ERROR([--with-ssl must specify openssl])
1390 if test "$with_pam" = yes ; then
1391 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1394 if test "$with_libxml" = yes ; then
1395 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1398 if test "$with_libxslt" = yes ; then
1399 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1402 if test "$with_lz4" = yes ; then
1403 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1406 if test "$with_zstd" = yes ; then
1407 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1410 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1411 # also, on AIX, we may need to have openssl in LIBS for this step.
1412 if test "$with_ldap" = yes ; then
1414 if test "$PORTNAME" != "win32"; then
1415 AC_CHECK_LIB(ldap, ldap_bind, [],
1416 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1418 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1419 # This test is carried out against libldap.
1420 AC_CHECK_FUNCS([ldap_initialize])
1421 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1422 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1423 # library from a separate OpenLDAP installation). The most reliable
1424 # way to check that is to check for a function introduced in 2.5.
1425 AC_CHECK_FUNC([ldap_verify_credentials],
1426 [thread_safe_libldap=yes],
1427 [thread_safe_libldap=no])
1428 if test "$thread_safe_libldap" = no; then
1429 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1430 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1432 AC_CHECK_LIB(ldap_r, ldap_bind,
1433 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1434 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1435 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1437 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1440 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1441 LDAP_LIBS_FE="-lwldap32"
1442 LDAP_LIBS_BE="-lwldap32"
1446 AC_SUBST(LDAP_LIBS_FE)
1447 AC_SUBST(LDAP_LIBS_BE)
1449 # for contrib/sepgsql
1450 if test "$with_selinux" = yes; then
1451 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1452 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1455 # for contrib/uuid-ossp
1456 if test "$with_uuid" = bsd ; then
1457 # On BSD, the UUID functions are in libc
1458 AC_CHECK_FUNC(uuid_to_string,
1460 [AC_MSG_ERROR([BSD UUID functions are not present])])
1461 elif test "$with_uuid" = e2fs ; then
1462 # On macOS, the UUID functions are in libc
1463 AC_CHECK_FUNC(uuid_generate,
1465 [AC_CHECK_LIB(uuid, uuid_generate,
1466 [UUID_LIBS="-luuid"],
1467 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1468 elif test "$with_uuid" = ossp ; then
1469 AC_CHECK_LIB(ossp-uuid, uuid_export,
1470 [UUID_LIBS="-lossp-uuid"],
1471 [AC_CHECK_LIB(uuid, uuid_export,
1472 [UUID_LIBS="-luuid"],
1473 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1484 AC_CHECK_HEADERS(m4_normalize([
1503 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1504 AC_CHECK_HEADERS(readline/readline.h, [],
1505 [AC_CHECK_HEADERS(readline.h, [],
1506 [AC_MSG_ERROR([readline header not found
1507 If you have readline already installed, see config.log for details on the
1508 failure. It is possible the compiler isn't looking in the proper directory.
1509 Use --without-readline to disable readline support.])])])
1510 AC_CHECK_HEADERS(readline/history.h, [],
1511 [AC_CHECK_HEADERS(history.h, [],
1512 [AC_MSG_ERROR([history header not found
1513 If you have readline already installed, see config.log for details on the
1514 failure. It is possible the compiler isn't looking in the proper directory.
1515 Use --without-readline to disable readline support.])])])
1518 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1519 # Some installations of libedit usurp /usr/include/readline/, which seems
1520 # bad practice, since in combined installations readline will have its headers
1521 # there. We might have to resort to AC_EGREP checks to make sure we found
1522 # the proper header...
1523 AC_CHECK_HEADERS(editline/readline.h, [],
1524 [AC_CHECK_HEADERS(readline.h, [],
1525 [AC_CHECK_HEADERS(readline/readline.h, [],
1526 [AC_MSG_ERROR([readline header not found
1527 If you have libedit already installed, see config.log for details on the
1528 failure. It is possible the compiler isn't looking in the proper directory.
1529 Use --without-readline to disable libedit support.])])])])
1530 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1531 # not be there at all. Hence, don't complain if not found. We must check
1532 # though, since in yet other versions it is an independent header.
1533 AC_CHECK_HEADERS(editline/history.h, [],
1534 [AC_CHECK_HEADERS(history.h, [],
1535 [AC_CHECK_HEADERS(readline/history.h)])])
1538 if test "$with_zlib" = yes; then
1539 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1540 If you have zlib already installed, see config.log for details on the
1541 failure. It is possible the compiler isn't looking in the proper directory.
1542 Use --without-zlib to disable zlib support.])])
1545 PGAC_PATH_PROGS(LZ4, lz4)
1546 if test "$with_lz4" = yes; then
1547 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1550 PGAC_PATH_PROGS(ZSTD, zstd)
1551 if test "$with_zstd" = yes; then
1552 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1555 if test "$with_gssapi" = yes ; then
1556 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1557 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1558 AC_CHECK_HEADERS(gssapi/gssapi_ext.h, [],
1559 [AC_CHECK_HEADERS(gssapi_ext.h, [], [AC_MSG_ERROR([gssapi_ext.h header file is required for GSSAPI])])])
1562 PGAC_PATH_PROGS(OPENSSL, openssl)
1563 pgac_openssl_version="$($OPENSSL version 2> /dev/null || echo openssl not found)"
1564 AC_MSG_NOTICE([using openssl: $pgac_openssl_version])
1565 if test "$with_ssl" = openssl ; then
1566 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1567 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1570 if test "$with_pam" = yes ; then
1571 AC_CHECK_HEADERS(security/pam_appl.h, [],
1572 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1573 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1576 if test "$with_bsd_auth" = yes ; then
1577 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1580 if test "$with_systemd" = yes ; then
1581 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1584 if test "$with_libxml" = yes ; then
1585 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1588 if test "$with_libxslt" = yes ; then
1589 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1592 if test "$with_ldap" = yes ; then
1593 if test "$PORTNAME" != "win32"; then
1594 AC_CHECK_HEADER(ldap.h, [],
1595 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1598 AC_CHECK_HEADER(winldap.h, [],
1599 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1600 [AC_INCLUDES_DEFAULT
1601 #include <windows.h>
1606 if test "$with_bonjour" = yes ; then
1607 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1608 dnl At some point we might add something like
1609 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1610 dnl but right now, what that would mainly accomplish is to encourage
1611 dnl people to try to use the avahi implementation, which does not work.
1612 dnl If you want to use Apple's own Bonjour code on another platform,
1613 dnl just add -ldns_sd to LIBS manually.
1616 # for contrib/uuid-ossp
1617 if test "$with_uuid" = bsd ; then
1618 AC_CHECK_HEADERS(uuid.h,
1619 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1620 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1621 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1622 elif test "$with_uuid" = e2fs ; then
1623 AC_CHECK_HEADERS(uuid/uuid.h,
1624 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1625 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1626 [AC_CHECK_HEADERS(uuid.h,
1627 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1628 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1629 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1630 elif test "$with_uuid" = ossp ; then
1631 AC_CHECK_HEADERS(ossp/uuid.h,
1632 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1633 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1634 [AC_CHECK_HEADERS(uuid.h,
1635 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1636 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1637 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1640 if test "$PORTNAME" = "win32" ; then
1641 AC_CHECK_HEADERS(crtdefs.h)
1645 ## Types, structures, compiler characteristics
1648 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1651 PGAC_PRINTF_ARCHETYPE
1652 PGAC_C_STATIC_ASSERT
1654 PGAC_C_TYPES_COMPATIBLE
1655 PGAC_C_BUILTIN_CONSTANT_P
1656 PGAC_C_BUILTIN_UNREACHABLE
1657 PGAC_C_COMPUTED_GOTO
1658 PGAC_STRUCT_TIMEZONE
1660 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1661 PGAC_STRUCT_SOCKADDR_SA_LEN
1665 # MSVC doesn't cope well with defining restrict to __restrict, the
1666 # spelling it understands, because it conflicts with
1667 # __declspec(restrict). Therefore we define pg_restrict to the
1668 # appropriate definition, which presumably won't conflict.
1670 # Allow platforms with buggy compilers to force restrict to not be
1671 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1674 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1677 pg_restrict="$ac_cv_c_restrict"
1679 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1680 [Define to keyword to use for C99 restrict support, or to nothing if not
1683 AC_CHECK_TYPES([struct option], [], [],
1684 [#ifdef HAVE_GETOPT_H
1690 # On x86_64, check if we can compile a popcntq instruction
1691 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1692 [pgac_cv_have_x86_64_popcntq],
1693 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1694 [long long x = 1; long long r;
1695 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1696 [pgac_cv_have_x86_64_popcntq=yes],
1697 [pgac_cv_have_x86_64_popcntq=no])])
1698 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1699 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1703 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1704 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1705 [pgac_cv_have_i_constraint__builtin_constant_p],
1706 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1708 addi(int ra, int si)
1711 if (__builtin_constant_p(si))
1712 __asm__ __volatile__(
1713 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1716 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1717 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1718 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1719 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1720 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1721 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1726 # Check largefile support. You might think this is a system service not a
1727 # compiler characteristic, but you'd be wrong. We must check this before
1728 # probing existence of related functions such as fseeko, since the largefile
1729 # defines can affect what is generated for that.
1730 if test "$PORTNAME" != "win32"; then
1732 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1733 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1734 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1735 dnl versions where the feature actually works, it's on by default anyway.
1736 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1739 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1740 AC_CHECK_SIZEOF([off_t])
1742 # If we don't have largefile support, can't handle segment size >= 2GB.
1743 if test "$ac_cv_sizeof_off_t" -lt 8; then
1744 if expr $RELSEG_SIZE '*' $blocksize '>=' 2 '*' 1024 '*' 1024; then
1745 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1749 AC_CHECK_SIZEOF([bool], [],
1750 [#ifdef HAVE_STDBOOL_H
1751 #include <stdbool.h>
1754 dnl We use <stdbool.h> if we have it and it declares type bool as having
1755 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1756 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1757 AC_DEFINE([PG_USE_STDBOOL], 1,
1758 [Define to 1 to use <stdbool.h> to define type bool.])
1763 ## Functions, global variables
1766 PGAC_VAR_INT_TIMEZONE
1767 PGAC_FUNC_WCSTOMBS_L
1769 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1770 # symbols that that library has no business exposing to the world. Pending
1771 # acquisition of a clue by those developers, ignore libedit (including its
1772 # possible alias of libreadline) while checking for everything else.
1773 LIBS_including_readline="$LIBS"
1774 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1776 AC_CHECK_FUNCS(m4_normalize([
1787 pthread_is_threaded_np
1798 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1799 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1800 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1801 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1802 # We assume that we needn't test all widths of these explicitly:
1803 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1804 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1805 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1806 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1807 # so it needs a different test function.
1808 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1810 # We require 64-bit fseeko() to be available, but run this check anyway
1811 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1814 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1815 # by calling it, 2009-04-02
1816 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1817 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1818 AS_IF([test "$PORTNAME" != "solaris"], [
1819 AC_CHECK_FUNCS(posix_fadvise)
1820 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1823 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1824 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1826 # We can't use AC_CHECK_FUNCS to detect these functions, because it
1827 # won't handle deployment target restrictions on macOS
1828 AC_CHECK_DECLS([preadv], [], [], [#include <sys/uio.h>])
1829 AC_CHECK_DECLS([pwritev], [], [], [#include <sys/uio.h>])
1831 # This is probably only present on macOS, but may as well check always
1832 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1834 AC_REPLACE_FUNCS(m4_normalize([
1845 AC_REPLACE_FUNCS(pthread_barrier_wait)
1847 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1848 # Cygwin and (apparently, based on test results) Mingw both
1849 # have a broken strtof(), so substitute its implementation.
1850 # That's not a perfect fix, since it doesn't avoid double-rounding,
1851 # but we have no better options.
1853 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1856 # Similarly, use system's getopt_long() only if system provides struct option.
1857 if test x"$ac_cv_type_struct_option" = xyes ; then
1858 AC_REPLACE_FUNCS([getopt_long])
1860 AC_LIBOBJ(getopt_long)
1863 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1864 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1865 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1869 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1870 # so always use our version on Windows.
1871 if test "$PORTNAME" = "win32"; then
1873 AC_LIBOBJ(getopt_long)
1876 # Win32 (really MinGW) support
1877 if test "$PORTNAME" = "win32"; then
1878 AC_CHECK_FUNCS(_configthreadlocale)
1883 AC_LIBOBJ(win32common)
1884 AC_LIBOBJ(win32dlopen)
1886 AC_LIBOBJ(win32error)
1887 AC_LIBOBJ(win32fdatasync)
1888 AC_LIBOBJ(win32gai_strerror)
1889 AC_LIBOBJ(win32getrusage)
1890 AC_LIBOBJ(win32link)
1891 AC_LIBOBJ(win32ntdll)
1892 AC_LIBOBJ(win32pread)
1893 AC_LIBOBJ(win32pwrite)
1894 AC_LIBOBJ(win32security)
1895 AC_LIBOBJ(win32setlocale)
1896 AC_LIBOBJ(win32stat)
1898 # Cygwin needs only a bit of that
1899 if test "$PORTNAME" = "cygwin"; then
1903 AC_CHECK_FUNC(syslog,
1904 [AC_CHECK_HEADER(syslog.h,
1905 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1907 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1908 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1909 [extern int opterr; opterr = 1;])],
1910 [pgac_cv_var_int_opterr=yes],
1911 [pgac_cv_var_int_opterr=no])])
1912 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1913 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1916 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1917 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1918 [extern int optreset; optreset = 1;])],
1919 [pgac_cv_var_int_optreset=yes],
1920 [pgac_cv_var_int_optreset=no])])
1921 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1922 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1925 if test "$with_icu" = yes; then
1926 ac_save_CPPFLAGS=$CPPFLAGS
1927 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1929 # Verify we have ICU's header files
1930 AC_CHECK_HEADER(unicode/ucol.h, [],
1931 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1933 CPPFLAGS=$ac_save_CPPFLAGS
1936 if test "$with_llvm" = yes; then
1937 PGAC_CHECK_LLVM_FUNCTIONS()
1940 # Lastly, restore full LIBS list and check for readline/libedit symbols
1941 LIBS="$LIBS_including_readline"
1943 if test "$with_readline" = yes; then
1944 PGAC_READLINE_VARIABLES
1945 AC_CHECK_FUNCS(m4_normalize([
1947 history_truncate_file
1948 rl_completion_matches
1949 rl_filename_completion_function
1950 rl_reset_screen_size
1956 # This test makes sure that run tests work at all. Sometimes a shared
1957 # library is found by the linker, but the runtime linker can't find it.
1958 # This check should come after all modifications of compiler or linker
1959 # variables, and before any other run tests.
1960 AC_MSG_CHECKING([test program])
1961 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1962 [AC_MSG_RESULT(ok)],
1963 [AC_MSG_RESULT(failed)
1965 Could not execute a simple test program. This may be a problem
1966 related to locating shared libraries. Check the file 'config.log'
1967 for the exact reason.]])],
1968 [AC_MSG_RESULT([cross-compiling])])
1970 # --------------------
1971 # Run tests below here
1972 # --------------------
1974 dnl Check to see if we have a working 64-bit integer type.
1975 dnl Since Postgres 8.4, we no longer support compilers without a working
1976 dnl 64-bit type; but we have to determine whether that type is called
1977 dnl "long int" or "long long int".
1979 PGAC_TYPE_64BIT_INT([long int])
1981 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
1982 pg_int64_type="long int"
1984 PGAC_TYPE_64BIT_INT([long long int])
1985 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1986 pg_int64_type="long long int"
1988 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
1992 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
1993 [Define to the name of a signed 64-bit integer type.])
1995 # Select the printf length modifier that goes with that, too.
1996 if test x"$pg_int64_type" = x"long long int" ; then
1997 INT64_MODIFIER='"ll"'
1999 INT64_MODIFIER='"l"'
2002 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2003 [Define to the appropriate printf length modifier for 64-bit ints.])
2005 # has to be down here, rather than with the other builtins, because
2006 # the test uses PG_INT64_TYPE.
2007 PGAC_C_BUILTIN_OP_OVERFLOW
2009 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2010 AC_CHECK_SIZEOF([void *])
2011 AC_CHECK_SIZEOF([size_t])
2012 AC_CHECK_SIZEOF([long])
2014 # Determine memory alignment requirements for the basic C data types.
2016 AC_CHECK_ALIGNOF(short)
2017 AC_CHECK_ALIGNOF(int)
2018 AC_CHECK_ALIGNOF(long)
2019 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2020 AC_CHECK_ALIGNOF(long long int)
2022 AC_CHECK_ALIGNOF(double)
2024 # Compute maximum alignment of any basic type.
2025 # We assume long's alignment is at least as strong as char, short, or int;
2026 # but we must check long long (if it is being used for int64) and double.
2027 # Note that we intentionally do not consider any types wider than 64 bits,
2028 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2029 # for disk and memory space.
2031 MAX_ALIGNOF=$ac_cv_alignof_long
2032 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2033 MAX_ALIGNOF=$ac_cv_alignof_double
2035 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2036 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2038 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2041 # Some platforms predefine the types int8, int16, etc. Only check
2042 # a (hopefully) representative subset.
2043 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2044 [#include <stdio.h>])
2046 # Some compilers offer a 128-bit integer scalar type.
2047 PGAC_TYPE_128BIT_INT
2049 # Check for various atomic operations now that we have checked how to declare
2051 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2052 PGAC_HAVE_GCC__SYNC_INT32_TAS
2053 PGAC_HAVE_GCC__SYNC_INT32_CAS
2054 PGAC_HAVE_GCC__SYNC_INT64_CAS
2055 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2056 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2059 # Check for x86 cpuid instruction
2060 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2061 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2062 [[unsigned int exx[4] = {0, 0, 0, 0};
2063 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2065 [pgac_cv__get_cpuid="yes"],
2066 [pgac_cv__get_cpuid="no"])])
2067 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2068 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2071 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2072 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2073 [[unsigned int exx[4] = {0, 0, 0, 0};
2074 __get_cpuid(exx[0], 1);
2076 [pgac_cv__cpuid="yes"],
2077 [pgac_cv__cpuid="no"])])
2078 if test x"$pgac_cv__cpuid" = x"yes"; then
2079 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2082 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2084 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2085 # with the default compiler flags. If not, check if adding the -msse4.2
2086 # flag helps. CFLAGS_CRC is set to -msse4.2 if that's required.
2087 PGAC_SSE42_CRC32_INTRINSICS([])
2088 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2089 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2092 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2093 # define __SSE4_2__ in that case.
2094 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2096 #error __SSE4_2__ not defined
2098 ])], [SSE4_2_TARGETED=1])
2100 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2102 # First check if __crc32c* intrinsics can be used with the default compiler
2103 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2104 # CFLAGS_CRC is set if the extra flag is required.
2105 PGAC_ARMV8_CRC32C_INTRINSICS([])
2106 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2107 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2110 # Check for LoongArch CRC intrinsics to do CRC calculations.
2112 # Check if __builtin_loongarch_crcc_* intrinsics can be used
2113 # with the default compiler flags.
2114 PGAC_LOONGARCH_CRC32C_INTRINSICS()
2116 AC_SUBST(CFLAGS_CRC)
2118 # Select CRC-32C implementation.
2120 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2121 # use the special CRC instructions for calculating CRC-32C. If we're not
2122 # targeting such a processor, but we can nevertheless produce code that uses
2123 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2124 # implementations and select which one to use at runtime, depending on whether
2125 # SSE 4.2 is supported by the processor we're running on.
2127 # Similarly, if we are targeting an ARM processor that has the CRC
2128 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2129 # we're not targeting such a processor, but can nevertheless produce code that
2130 # uses the CRC instructions, compile both, and select at runtime.
2132 # You can skip the runtime check by setting the appropriate USE_*_CRC32 flag to 1
2133 # in the template or configure command line.
2135 # If we are targeting a LoongArch processor, CRC instructions are
2136 # always available (at least on 64 bit), so no runtime check is needed.
2137 if test x"$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"" && test x"$USE_LOONGARCH_CRC32C" = x""; then
2138 # Use Intel SSE 4.2 if available.
2139 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2142 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2143 # the runtime check.
2144 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2145 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2147 # Use ARM CRC Extension if available.
2148 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_CRC" = x""; then
2151 # ARM CRC Extension, with runtime check?
2152 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2153 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2155 # LoongArch CRCC instructions.
2156 if test x"$pgac_loongarch_crc32c_intrinsics" = x"yes"; then
2157 USE_LOONGARCH_CRC32C=1
2159 # fall back to slicing-by-8 algorithm, which doesn't require any
2160 # special CPU support.
2161 USE_SLICING_BY_8_CRC32C=1
2169 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2170 AC_MSG_CHECKING([which CRC-32C implementation to use])
2171 if test x"$USE_SSE42_CRC32C" = x"1"; then
2172 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2173 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2174 AC_MSG_RESULT(SSE 4.2)
2176 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2177 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2178 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2179 AC_MSG_RESULT(SSE 4.2 with runtime check)
2181 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2182 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2183 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2184 AC_MSG_RESULT(ARMv8 CRC instructions)
2186 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2187 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2188 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2189 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2191 if test x"$USE_LOONGARCH_CRC32C" = x"1"; then
2192 AC_DEFINE(USE_LOONGARCH_CRC32C, 1, [Define to 1 to use LoongArch CRCC instructions.])
2193 PG_CRC32C_OBJS="pg_crc32c_loongarch.o"
2194 AC_MSG_RESULT(LoongArch CRCC instructions)
2196 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2197 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2198 AC_MSG_RESULT(slicing-by-8)
2204 AC_SUBST(PG_CRC32C_OBJS)
2207 # Select semaphore implementation type.
2208 if test "$PORTNAME" != "win32"; then
2209 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2210 # Need sem_open for this
2211 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2213 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2214 # Need sem_init for this
2215 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2217 AC_MSG_CHECKING([which semaphore API to use])
2218 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2219 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2220 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2221 sematype="named POSIX"
2223 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2224 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2225 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2226 sematype="unnamed POSIX"
2228 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2229 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2233 AC_MSG_RESULT([$sematype])
2235 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2236 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2240 # Select shared-memory implementation type.
2241 if test "$PORTNAME" != "win32"; then
2242 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2243 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2245 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2246 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2249 # Select random number source. If a TLS library is used then it will be the
2250 # first choice, else the native platform sources (Windows API or /dev/urandom)
2252 AC_MSG_CHECKING([which random number source to use])
2253 if test x"$with_ssl" = x"openssl" ; then
2254 AC_MSG_RESULT([OpenSSL])
2255 elif test x"$PORTNAME" = x"win32" ; then
2256 AC_MSG_RESULT([Windows native])
2257 elif test x"$cross_compiling" = x"yes"; then
2258 AC_MSG_RESULT([assuming /dev/urandom])
2260 AC_MSG_RESULT([/dev/urandom])
2261 AC_CHECK_FILE([/dev/urandom], [], [])
2263 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2265 no source of strong random numbers was found
2266 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2270 # If not set in template file, set bytes to use libc memset()
2271 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2272 MEMSET_LOOP_LIMIT=1024
2274 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2277 if test "$enable_nls" = yes ; then
2281 # Check for Tcl configuration script tclConfig.sh
2282 if test "$with_tcl" = yes; then
2283 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2284 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2285 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2286 if test "$TCL_SHARED_BUILD" != 1; then
2287 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2288 Use --without-tcl to disable building PL/Tcl.])
2290 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2291 ac_save_CPPFLAGS=$CPPFLAGS
2292 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2293 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2294 CPPFLAGS=$ac_save_CPPFLAGS
2297 # check for <perl.h>
2298 if test "$with_perl" = yes; then
2299 ac_save_CPPFLAGS=$CPPFLAGS
2300 CPPFLAGS="$CPPFLAGS $perl_includespec"
2301 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2302 [#include <EXTERN.h>])
2303 # While we're at it, check that we can link to libperl.
2304 # On most platforms, if perl.h is there then libperl.so will be too, but at
2305 # this writing Debian packages them separately. There is no known reason to
2306 # waste cycles on separate probes for the Tcl or Python libraries, though.
2307 # On some Red Hat platforms, the link attempt can fail if we don't use
2308 # CFLAGS_SL while building the test program.
2309 ac_save_CFLAGS=$CFLAGS
2310 CFLAGS="$CFLAGS $CFLAGS_SL"
2311 pgac_save_LIBS=$LIBS
2312 LIBS="$perl_embed_ldflags"
2313 AC_MSG_CHECKING([for libperl])
2314 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2317 ], [perl_alloc();])],
2318 [AC_MSG_RESULT(yes)],
2320 AC_MSG_ERROR([libperl library is required for Perl])])
2321 LIBS=$pgac_save_LIBS
2322 CFLAGS=$ac_save_CFLAGS
2323 CPPFLAGS=$ac_save_CPPFLAGS
2326 # check for <Python.h>
2327 if test "$with_python" = yes; then
2328 ac_save_CPPFLAGS=$CPPFLAGS
2329 CPPFLAGS="$python_includespec $CPPFLAGS"
2330 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2331 CPPFLAGS=$ac_save_CPPFLAGS
2335 # Check for documentation-building tools
2337 PGAC_PATH_PROGS(XMLLINT, xmllint)
2338 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2339 PGAC_PATH_PROGS(FOP, fop)
2340 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2343 # Check for test tools
2345 if test "$enable_tap_tests" = yes; then
2346 # Make sure we know where prove is.
2347 PGAC_PATH_PROGS(PROVE, prove)
2348 if test -z "$PROVE"; then
2349 AC_MSG_ERROR([prove not found])
2351 # Check for necessary Perl modules. You might think we should use
2352 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2353 # installation than perl, eg on MSys, so we have to check using prove.
2354 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2355 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2356 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2357 if test $? -eq 0; then
2358 # log the module version details, but don't show them interactively
2359 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2362 # on failure, though, show the results to the user
2363 AC_MSG_RESULT([$modulestderr])
2364 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2368 # If compiler will take -Wl,--as-needed (or various platform-specific
2369 # spellings thereof) then add that to LDFLAGS. This is much easier than
2370 # trying to filter LIBS to the minimum for each executable.
2371 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2372 # libreadline; therefore we postpone testing it until we know what library
2373 # dependencies readline has. The test code will try to link with $LIBS.
2374 if test "$with_readline" = yes; then
2375 link_test_func=readline
2380 if test "$PORTNAME" = "darwin"; then
2381 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2382 elif test "$PORTNAME" = "openbsd"; then
2383 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2385 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2388 # For linkers that understand --export-dynamic, add that to the LDFLAGS_EX_BE
2389 # (backend specific ldflags). One some platforms this will always fail (e.g.,
2390 # windows), but on others it depends on the choice of linker (e.g., solaris).
2391 PGAC_PROG_CC_LD_VARFLAGS_OPT(LDFLAGS_EX_BE, [-Wl,--export-dynamic], $link_test_func)
2392 AC_SUBST(LDFLAGS_EX_BE)
2394 # Create compiler version string
2395 if test x"$GCC" = x"yes" ; then
2396 cc_string=`${CC} --version | sed q`
2397 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2398 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2399 cc_string=`${CC} -V 2>&1 | sed q`
2404 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2405 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2406 [A string containing the version number, platform, and C compiler])
2408 # Supply a numeric version string for use by 3rd party add-ons
2409 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2410 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2411 $AWK '{printf "%d%04d", $1, $2}'`"]
2412 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2413 AC_SUBST(PG_VERSION_NUM)
2415 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2416 # literally, so that it's possible to override it at build time using
2417 # a command like "make ... PG_SYSROOT=path". This has to be done after
2418 # we've finished all configure checks that depend on CPPFLAGS.
2419 # The same for LDFLAGS, too.
2420 if test x"$PG_SYSROOT" != x; then
2421 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2422 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2424 AC_SUBST(PG_SYSROOT)
2427 # Begin output steps
2429 AC_MSG_NOTICE([using compiler=$cc_string])
2430 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2431 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2432 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2433 # Currently only used when LLVM is used
2434 if test "$with_llvm" = yes ; then
2435 AC_MSG_NOTICE([using CXX=$CXX])
2436 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2437 AC_MSG_NOTICE([using CLANG=$CLANG])
2438 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2439 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2442 # prepare build tree if outside source tree
2443 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2444 # Note 2: /bin/pwd might be better than shell's built-in at getting
2445 # a symlink-free name.
2446 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2450 if test "$no_create" != yes; then
2451 _AS_ECHO_N([preparing build tree... ])
2452 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2453 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2454 || AC_MSG_ERROR(failed)
2458 AC_SUBST(vpath_build)
2461 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2464 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2465 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2466 src/include/pg_config_os.h:src/include/port/${template}.h
2467 src/Makefile.port:src/makefiles/Makefile.${template}
2470 if test "$PORTNAME" = "win32"; then
2471 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2472 # Links sometimes fail undetected on Mingw -
2473 # so here we detect it and warn the user
2474 for FILE in $CONFIG_LINKS
2476 # test -e works for symlinks in the MinGW console
2477 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2482 AC_CONFIG_HEADERS([src/include/pg_config.h],
2484 # Update timestamp for pg_config.h (see Makefile.global)
2485 echo >src/include/stamp-h
2488 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2490 # Update timestamp for pg_config_ext.h (see Makefile.global)
2491 echo >src/include/stamp-ext-h
2494 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2495 [echo >src/interfaces/ecpg/include/stamp-h])
2499 # Ensure that any meson build directories would reconfigure and see that
2500 # there's a conflicting in-tree build and can error out.
2501 if test "$vpath_build"="no"; then