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) 1996-2023, 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], ${BLCKSZ}, [
272 Size of a disk block --- this also limits the size of a tuple. You
273 can set it bigger if you need bigger tuples (although TOAST should
274 reduce the need to have large tuples, since fields can be spread
275 across multiple tuples).
277 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
278 is currently 2^15 (32768). This is determined by the 15-bit widths
279 of the lp_off and lp_len fields in ItemIdData (see
280 include/storage/itemid.h).
282 Changing BLCKSZ requires an initdb.
286 # Relation segment size
288 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
291 PGAC_ARG_REQ(with, segsize-blocks, [SEGSIZE_BLOCKS], [set table segment size in blocks [0]],
292 [segsize_blocks=$withval],
295 # If --with-segsize-blocks is non-zero, it is used, --with-segsize
296 # otherwise. segsize-blocks is only really useful for developers wanting to
297 # test segment related code. Warn if both are used.
298 if test $segsize_blocks -ne 0 -a $segsize -ne 1; then
299 AC_MSG_WARN([both --with-segsize and --with-segsize-blocks specified, --with-segsize-blocks wins])
302 AC_MSG_CHECKING([for segment size])
303 if test $segsize_blocks -eq 0; then
304 # this expression is set up to avoid unnecessary integer overflow
305 # blocksize is already guaranteed to be a factor of 1024
306 RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`
307 test $? -eq 0 || exit 1
308 AC_MSG_RESULT([${segsize}GB])
310 RELSEG_SIZE=$segsize_blocks
311 AC_MSG_RESULT([${RELSEG_SIZE} blocks])
314 AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [
315 RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
316 Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
317 relations bigger than that are divided into multiple files.
319 RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.
320 This is often 2 GB or 4GB in a 32-bit operating system, unless you
321 have large file support enabled. By default, we make the limit 1 GB
322 to avoid any possible integer-overflow problems within the OS.
323 A limit smaller than necessary only means we divide a large
324 relation into more chunks than necessary, so it seems best to err
325 in the direction of a small limit.
327 A power-of-2 value is recommended to save a few cycles in md.c,
328 but is not absolutely required.
330 Changing RELSEG_SIZE requires an initdb.
336 AC_MSG_CHECKING([for WAL block size])
337 PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],
338 [wal_blocksize=$withval],
340 case ${wal_blocksize} in
341 1) XLOG_BLCKSZ=1024;;
342 2) XLOG_BLCKSZ=2048;;
343 4) XLOG_BLCKSZ=4096;;
344 8) XLOG_BLCKSZ=8192;;
345 16) XLOG_BLCKSZ=16384;;
346 32) XLOG_BLCKSZ=32768;;
347 64) XLOG_BLCKSZ=65536;;
348 *) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])
350 AC_MSG_RESULT([${wal_blocksize}kB])
352 AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [
353 Size of a WAL file block. This need have no particular relation to BLCKSZ.
354 XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
355 XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
356 buffers, else direct I/O may fail.
358 Changing XLOG_BLCKSZ requires an initdb.
365 # For historical reasons you can also use --with-CC to specify the C compiler
366 # to use, although the standard way to do this is to set the CC environment
368 PGAC_ARG_REQ(with, CC, [CMD], [set compiler (deprecated)], [CC=$with_CC])
371 aix) pgac_cc_list="gcc xlc"; pgac_cxx_list="g++ xlC";;
372 *) pgac_cc_list="gcc cc"; pgac_cxx_list="g++ c++";;
375 AC_PROG_CC([$pgac_cc_list])
378 # Error out if the compiler does not support C99, as the codebase
380 if test "$ac_cv_prog_cc_c99" = no; then
381 AC_MSG_ERROR([C compiler "$CC" does not support C99])
384 AC_PROG_CXX([$pgac_cxx_list])
386 # Check if it's Intel's compiler, which (usually) pretends to be gcc,
387 # but has idiosyncrasies of its own. We assume icc will define
388 # __INTEL_COMPILER regardless of CFLAGS.
389 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
391 @%:@endif])], [ICC=yes], [ICC=no])
393 # Check if it's Sun Studio compiler. We assume that
394 # __SUNPRO_C will be defined for Sun Studio compilers
395 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
397 @%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
399 AC_SUBST(SUN_STUDIO_CC)
405 # Checked early because subsequent tests depend on it.
406 PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],
407 [AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])
409 dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions
410 AS_IF([test "$with_llvm" = yes], [
421 . "$srcdir/src/template/$template" || exit
423 # C[XX]FLAGS are selected so:
424 # If the user specifies something in the environment, that is used.
425 # else: If the template file set something, that is used.
426 # else: If coverage was enabled, don't set anything.
427 # else: If the compiler is GCC, then we use -O2.
428 # else: If the compiler is something else, then we use -O, unless debugging.
430 if test "$ac_env_CFLAGS_set" = set; then
431 CFLAGS=$ac_env_CFLAGS_value
432 elif test "${CFLAGS+set}" = set; then
433 : # (keep what template set)
434 elif test "$enable_coverage" = yes; then
435 : # no optimization by default
436 elif test "$GCC" = yes; then
439 # if the user selected debug mode, don't use -O
440 if test "$enable_debug" != yes; then
445 if test "$ac_env_CXXFLAGS_set" = set; then
446 CXXFLAGS=$ac_env_CXXFLAGS_value
447 elif test "${CXXFLAGS+set}" = set; then
448 : # (keep what template set)
449 elif test "$enable_coverage" = yes; then
450 : # no optimization by default
451 elif test "$GCC" = yes; then
454 # if the user selected debug mode, don't use -O
455 if test "$enable_debug" != yes; then
460 # When generating bitcode (for inlining) we always want to use -O2
461 # even when --enable-debug is specified. The bitcode is not going to
462 # be used for line-by-line debugging, and JIT inlining doesn't work
463 # without at least -O1 (otherwise clang will emit 'noinline'
464 # attributes everywhere), which is bad for testing. Still allow the
465 # environment to override if done explicitly.
466 if test "$ac_env_BITCODE_CFLAGS_set" = set; then
467 BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value
469 BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"
471 if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then
472 BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value
474 BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"
477 # C[XX]FLAGS we determined above will be added back at the end
480 user_CXXFLAGS=$CXXFLAGS
482 user_BITCODE_CFLAGS=$BITCODE_CFLAGS
484 user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS
487 # set CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE from the environment, if present
488 if test "$ac_env_CFLAGS_UNROLL_LOOPS_set" = set; then
489 CFLAGS_UNROLL_LOOPS=$ac_env_CFLAGS_UNROLL_LOOPS_value
491 if test "$ac_env_CFLAGS_VECTORIZE_set" = set; then
492 CFLAGS_VECTORIZE=$ac_env_CFLAGS_VECTORIZE_value
495 # Some versions of GCC support some additional useful warning flags.
496 # Check whether they are supported, and add them to CFLAGS if so.
497 # ICC pretends to be GCC but it's lying; it doesn't support these flags,
498 # but has its own. Also check other compiler-specific flags here.
500 if test "$GCC" = yes -a "$ICC" = no; then
501 CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
502 CXXFLAGS="-Wall -Wpointer-arith"
503 # These work in some but not all gcc versions
505 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
506 # -Wdeclaration-after-statement isn't applicable for C++. Specific C files
507 # disable it, so AC_SUBST the negative form.
508 PERMIT_DECLARATION_AFTER_STATEMENT=
509 if test x"$save_CFLAGS" != x"$CFLAGS"; then
510 PERMIT_DECLARATION_AFTER_STATEMENT=-Wno-declaration-after-statement
512 AC_SUBST(PERMIT_DECLARATION_AFTER_STATEMENT)
513 # Really don't want VLAs to be used in our dialect of C
514 PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])
515 # On macOS, complain about usage of symbols newer than the deployment target
516 PGAC_PROG_CC_CFLAGS_OPT([-Werror=unguarded-availability-new])
517 PGAC_PROG_CXX_CFLAGS_OPT([-Werror=unguarded-availability-new])
518 # -Wvla is not applicable for C++
519 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
520 PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])
521 PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])
522 PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])
523 PGAC_PROG_CC_CFLAGS_OPT([-Wimplicit-fallthrough=3])
524 PGAC_PROG_CXX_CFLAGS_OPT([-Wimplicit-fallthrough=3])
525 PGAC_PROG_CC_CFLAGS_OPT([-Wcast-function-type])
526 PGAC_PROG_CXX_CFLAGS_OPT([-Wcast-function-type])
527 PGAC_PROG_CC_CFLAGS_OPT([-Wshadow=compatible-local])
528 PGAC_PROG_CXX_CFLAGS_OPT([-Wshadow=compatible-local])
529 # This was included in -Wall/-Wformat in older GCC versions
530 PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
531 PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])
532 # Disable strict-aliasing rules; needed for gcc 3.3+
533 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
534 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
535 # Disable optimizations that assume no overflow; needed for gcc 4.3+
536 PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
537 PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])
538 # Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
539 PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
540 PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])
541 # Optimization flags for specific files that benefit from loop unrolling
542 PGAC_PROG_CC_VAR_OPT(CFLAGS_UNROLL_LOOPS, [-funroll-loops])
543 # Optimization flags for specific files that benefit from vectorization
544 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize])
546 # The following tests want to suppress various unhelpful warnings by adding
547 # -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo
548 # switches, so we have to test for the positive form and if that works,
549 # add the negative form. Note that tests of this form typically need to
550 # be duplicated in the BITCODE_CFLAGS setup stanza below.
552 # Suppress clang's unhelpful unused-command-line-argument warnings.
554 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
555 if test -n "$NOT_THE_CFLAGS"; then
556 CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
558 # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
559 # of warnings when building plperl because of usages in the Perl headers.
561 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
562 if test -n "$NOT_THE_CFLAGS"; then
563 CFLAGS="$CFLAGS -Wno-compound-token-split-by-macro"
565 # Similarly disable useless truncation warnings from gcc 8+
567 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])
568 if test -n "$NOT_THE_CFLAGS"; then
569 CFLAGS="$CFLAGS -Wno-format-truncation"
572 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])
573 if test -n "$NOT_THE_CFLAGS"; then
574 CFLAGS="$CFLAGS -Wno-stringop-truncation"
576 # Suppress clang 16's strict warnings about function casts
578 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcast-function-type-strict])
579 if test -n "$NOT_THE_CFLAGS"; then
580 CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
582 elif test "$ICC" = yes; then
583 # Intel's compiler has a bug/misoptimization in checking for
584 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
585 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
586 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
587 # Make sure strict aliasing is off (though this is said to be the default)
588 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
589 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
590 elif test "$PORTNAME" = "aix"; then
591 # AIX's xlc has to have strict aliasing turned off too
592 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
593 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
594 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
595 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
598 # If the compiler knows how to hide symbols, add the switch needed for that to
599 # CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE.
601 # This is done separately from the above because -fvisibility is supported by
602 # quite a few different compilers, making the required repetition bothersome.
604 # We might need to add a separate test to check if
605 # __attribute__((visibility("hidden"))) is supported, if we encounter a
606 # compiler that supports one of the supported variants of -fvisibility=hidden
607 # but uses a different syntax to mark a symbol as exported.
608 if test "$GCC" = yes -o "$SUN_STUDIO_CC" = yes ; then
609 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden])
610 # For C++ we additionally want -fvisibility-inlines-hidden
611 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden])
612 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden])
613 have_visibility_attribute=$pgac_cv_prog_CC_cflags__fvisibility_hidden
614 elif test "$PORTNAME" = "aix"; then
615 # Note that xlc accepts -fvisibility=hidden as a file.
616 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-qvisibility=hidden])
617 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-qvisibility=hidden])
618 have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
619 # Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
620 # all extension module symbols to be exported.
621 if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
622 CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
626 if test "$have_visibility_attribute" = "yes"; then
627 AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1,
628 [Define to 1 if your compiler knows the visibility("hidden") attribute.])
631 AC_SUBST(CFLAGS_UNROLL_LOOPS)
632 AC_SUBST(CFLAGS_VECTORIZE)
633 AC_SUBST(CFLAGS_SL_MODULE)
634 AC_SUBST(CXXFLAGS_SL_MODULE)
636 # Determine flags used to emit bitcode for JIT inlining.
637 # 1. We must duplicate any behaviour-changing compiler flags used above,
638 # to keep compatibility with the compiler used for normal Postgres code.
639 # 2. We don't bother to duplicate extra-warnings switches --- seeing a
640 # warning in the main build is enough.
641 # 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.
642 if test "$with_llvm" = yes ; then
643 CLANGXX="$CLANG -xc++"
645 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
646 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
647 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
648 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
649 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
650 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
652 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])
653 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])
656 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
657 if test -n "$NOT_THE_CFLAGS"; then
658 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
661 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
662 if test -n "$NOT_THE_CFLAGS"; then
663 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
666 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
667 if test -n "$NOT_THE_CFLAGS"; then
668 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
671 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
672 if test -n "$NOT_THE_CFLAGS"; then
673 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
677 # supply -g if --enable-debug
678 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
682 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
683 CXXFLAGS="$CXXFLAGS -g"
686 # enable code coverage if --enable-coverage
687 if test "$enable_coverage" = yes; then
688 if test "$GCC" = yes; then
689 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
690 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
692 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
696 # enable profiling if --enable-profiling
697 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
698 if test "$GCC" = yes; then
699 AC_DEFINE([PROFILE_PID_DIR], 1,
700 [Define to 1 to allow profiling output to be saved separately for each process.])
701 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
702 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
704 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
708 # On Solaris, we need this #define to get POSIX-conforming versions
709 # of many interfaces (sigwait, getpwuid_r, ...).
710 if test "$PORTNAME" = "solaris"; then
711 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
714 # We already have this in Makefile.win32, but configure needs it too
715 if test "$PORTNAME" = "win32"; then
716 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
719 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
720 # user-specified flags (if any) at the end. This lets users override
721 # the automatic additions.
722 CFLAGS="$CFLAGS $user_CFLAGS"
723 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
724 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
725 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
727 AC_SUBST(BITCODE_CFLAGS)
728 AC_SUBST(BITCODE_CXXFLAGS)
730 # The template file must set up CFLAGS_SL; we don't support user override
733 # Check if the compiler still works with the final flag settings
734 # (note, we're not checking that for CXX, which is optional)
735 AC_MSG_CHECKING([whether the C compiler still works])
736 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
737 [AC_MSG_RESULT(yes)],
739 AC_MSG_ERROR([cannot proceed])])
741 # Defend against gcc -ffast-math
742 if test "$GCC" = yes; then
743 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
745 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
748 # Defend against clang being used on x86-32 without SSE2 enabled. As current
749 # versions of clang do not understand -fexcess-precision=standard, the use of
750 # x87 floating point operations leads to problems like isinf possibly returning
751 # false for a value that is infinite when converted from the 80bit register to
752 # the 8byte memory representation.
754 # Only perform the test if the compiler doesn't understand
755 # -fexcess-precision=standard, that way a potentially fixed compiler will work
757 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
758 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
759 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
763 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
771 # Set up TAS assembly code if needed; the template file has now had its
772 # chance to request this.
774 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
776 if test "$need_tas" = yes ; then
783 AC_SUBST(DLSUFFIX)dnl
784 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
785 [Define to the file name extension of dynamically-loadable modules.])
788 # Set up pkg_config in case we need it below
793 # Automatic dependency tracking
795 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
801 # Enable assert checks
803 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
804 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
805 [Define to 1 to build with assertion checks. (--enable-cassert)])])
809 # Include directories
812 IFS="${IFS}${PATH_SEPARATOR}"
813 # SRCH_INC comes from the template file
814 for dir in $with_includes $SRCH_INC; do
815 if test -d "$dir"; then
816 INCLUDES="$INCLUDES -I$dir"
818 AC_MSG_WARN([*** Include directory $dir does not exist.])
826 # Library directories
829 IFS="${IFS}${PATH_SEPARATOR}"
830 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
831 for dir in $LIBRARY_DIRS $SRCH_LIB; do
832 if test -d "$dir"; then
833 LIBDIRS="$LIBDIRS -L$dir"
835 AC_MSG_WARN([*** Library directory $dir does not exist.])
841 # Enable thread-safe client libraries
843 AC_MSG_CHECKING([allow thread-safe client libraries])
844 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
845 if test "$enable_thread_safety" = yes; then
846 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
847 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
849 AC_MSG_RESULT([$enable_thread_safety])
850 AC_SUBST(enable_thread_safety)
855 AC_MSG_CHECKING([whether to build with ICU support])
856 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
857 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
858 AC_MSG_RESULT([$with_icu])
861 if test "$with_icu" = yes; then
862 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
866 # Optionally build Tcl modules (PL/Tcl)
868 AC_MSG_CHECKING([whether to build with Tcl])
869 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
870 AC_MSG_RESULT([$with_tcl])
873 # We see if the path to the Tcl/Tk configuration scripts is specified.
874 # This will override the use of tclsh to find the paths to search.
876 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
879 # Optionally build Perl modules (PL/Perl)
881 AC_MSG_CHECKING([whether to build Perl modules])
882 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
883 AC_MSG_RESULT([$with_perl])
887 # Optionally build Python modules (PL/Python)
889 AC_MSG_CHECKING([whether to build Python modules])
890 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
891 AC_MSG_RESULT([$with_python])
892 AC_SUBST(with_python)
897 AC_MSG_CHECKING([whether to build with GSSAPI support])
898 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
900 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
901 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
903 AC_MSG_RESULT([$with_gssapi])
904 AC_SUBST(with_gssapi)
911 # Kerberos configuration parameters
913 PGAC_ARG_REQ(with, krb-srvnam,
914 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
916 [with_krb_srvnam="postgres"])
917 AC_SUBST(with_krb_srvnam)
918 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
919 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
925 AC_MSG_CHECKING([whether to build with PAM support])
926 PGAC_ARG_BOOL(with, pam, no,
927 [build with PAM support],
928 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
929 AC_MSG_RESULT([$with_pam])
935 AC_MSG_CHECKING([whether to build with BSD Authentication support])
936 PGAC_ARG_BOOL(with, bsd-auth, no,
937 [build with BSD Authentication support],
938 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
939 AC_MSG_RESULT([$with_bsd_auth])
945 AC_MSG_CHECKING([whether to build with LDAP support])
946 PGAC_ARG_BOOL(with, ldap, no,
947 [build with LDAP support],
948 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
949 AC_MSG_RESULT([$with_ldap])
956 AC_MSG_CHECKING([whether to build with Bonjour support])
957 PGAC_ARG_BOOL(with, bonjour, no,
958 [build with Bonjour support],
959 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
960 AC_MSG_RESULT([$with_bonjour])
966 AC_MSG_CHECKING([whether to build with SELinux support])
967 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
968 AC_SUBST(with_selinux)
969 AC_MSG_RESULT([$with_selinux])
974 AC_MSG_CHECKING([whether to build with systemd support])
975 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
976 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
977 AC_SUBST(with_systemd)
978 AC_MSG_RESULT([$with_systemd])
983 PGAC_ARG_BOOL(with, readline, yes,
984 [do not use GNU Readline nor BSD Libedit for editing])
985 # readline on MinGW has problems with backslashes in psql and other bugs.
986 # This is particularly a problem with non-US code pages.
987 # Therefore disable its use until we understand the cause. 2004-07-20
988 if test "$PORTNAME" = "win32"; then
989 if test "$with_readline" = yes; then
990 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
994 AC_SUBST(with_readline)
1000 PGAC_ARG_BOOL(with, libedit-preferred, no,
1001 [prefer BSD Libedit over GNU Readline])
1007 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
1008 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
1009 # UUID library. More than one of these might be present on a given platform,
1010 # so we make the user say which one she wants.
1012 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
1013 if test x"$with_uuid" = x"" ; then
1016 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
1017 if test "$with_ossp_uuid" = yes ; then
1021 if test "$with_uuid" != no ; then
1022 if test "$with_uuid" = bsd ; then
1023 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
1024 elif test "$with_uuid" = e2fs ; then
1025 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1026 elif test "$with_uuid" = ossp ; then
1027 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1029 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1038 AC_MSG_CHECKING([whether to build with XML support])
1039 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1040 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1041 AC_MSG_RESULT([$with_libxml])
1042 AC_SUBST(with_libxml)
1044 if test "$with_libxml" = yes ; then
1045 # Check pkg-config, then xml2-config. But for backwards compatibility,
1046 # setting XML2_CONFIG overrides pkg-config.
1047 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1048 have_libxml2_pkg_config=no
1049 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1050 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1051 [have_libxml2_pkg_config=yes], [# do nothing])
1053 if test "$have_libxml2_pkg_config" = no ; then
1054 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1055 if test -n "$XML2_CONFIG"; then
1056 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1057 XML2_LIBS=`$XML2_CONFIG --libs`
1060 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1061 for pgac_option in $XML2_CFLAGS; do
1062 case $pgac_option in
1063 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1066 for pgac_option in $XML2_LIBS; do
1067 case $pgac_option in
1068 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1077 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1078 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1081 AC_SUBST(with_libxslt)
1086 PGAC_ARG_REQ(with, system-tzdata,
1087 [DIR], [use system time zone data in DIR])
1088 AC_SUBST(with_system_tzdata)
1093 PGAC_ARG_BOOL(with, zlib, yes,
1100 AC_MSG_CHECKING([whether to build with LZ4 support])
1101 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1102 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1103 AC_MSG_RESULT([$with_lz4])
1106 if test "$with_lz4" = yes; then
1107 PKG_CHECK_MODULES(LZ4, liblz4)
1108 # We only care about -I, -D, and -L switches;
1109 # note that -llz4 will be added by AC_CHECK_LIB below.
1110 for pgac_option in $LZ4_CFLAGS; do
1111 case $pgac_option in
1112 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1115 for pgac_option in $LZ4_LIBS; do
1116 case $pgac_option in
1117 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1125 AC_MSG_CHECKING([whether to build with ZSTD support])
1126 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1127 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1128 AC_MSG_RESULT([$with_zstd])
1131 if test "$with_zstd" = yes; then
1132 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1133 # We only care about -I, -D, and -L switches;
1134 # note that -lzstd will be added by AC_CHECK_LIB below.
1135 for pgac_option in $ZSTD_CFLAGS; do
1136 case $pgac_option in
1137 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1140 for pgac_option in $ZSTD_LIBS; do
1141 case $pgac_option in
1142 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1150 CPPFLAGS="$CPPFLAGS $INCLUDES"
1151 LDFLAGS="$LDFLAGS $LIBDIRS"
1153 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1154 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1157 AC_CHECK_TOOL(AR, ar, ar)
1158 if test "$PORTNAME" = "win32"; then
1159 AC_CHECK_TOOL(WINDRES, windres, windres)
1163 # When Autoconf chooses install-sh as install program it tries to generate
1164 # a relative path to it in each makefile where it substitutes it. This clashes
1165 # with our Makefile.global concept. This workaround helps.
1167 *install-sh*) install_bin='';;
1168 *) install_bin=$INSTALL;;
1170 AC_SUBST(install_bin)
1172 PGAC_PATH_PROGS(TAR, tar)
1175 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1176 # a relative path to it in each makefile where it substitutes it. This clashes
1177 # with our Makefile.global concept. This workaround helps.
1179 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1186 if test "$with_perl" = yes; then
1187 if test -z "$PERL"; then
1188 AC_MSG_ERROR([Perl not found])
1190 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1191 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1192 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1193 You might have to rebuild your Perl installation. Refer to the
1194 documentation for details. Use --without-perl to disable building
1197 # On most platforms, archlibexp is also where the Perl include files live ...
1198 perl_includespec="-I$perl_archlibexp/CORE"
1199 # ... but on newer macOS versions, we must use -iwithsysroot to look
1201 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1202 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1203 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1206 AC_SUBST(perl_includespec)dnl
1207 PGAC_CHECK_PERL_EMBED_CCFLAGS
1208 PGAC_CHECK_PERL_EMBED_LDFLAGS
1211 if test "$with_python" = yes; then
1213 PGAC_CHECK_PYTHON_EMBED_SETUP
1216 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1217 PGAC_PATH_PROGS(ZIC, zic)
1218 if test -z "$ZIC"; then
1220 When cross-compiling, either use the option --with-system-tzdata to use
1221 existing time-zone data, or set the environment variable ZIC to a zic
1222 program to use during the build.])
1229 # For each platform, we need to know about any special compile and link
1230 # libraries, and whether the normal C function names are thread-safe.
1231 # See the comment at the top of src/port/thread.c for more information.
1232 # WIN32 doesn't need the pthread tests; it always uses threads
1234 # These tests are run before the library-tests, because linking with the
1235 # other libraries can pull in the pthread functions as a side-effect. We
1236 # want to use the -pthread or similar flags directly, and not rely on
1237 # the side-effects of linking with some other library.
1239 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1240 dnl invocation below is the first one in the script, and autoconf generates
1241 dnl additional code for that, which must not be inside the if-block. AS_IF
1242 dnl knows how to do that.
1243 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1245 AX_PTHREAD # set thread flags
1247 # Some platforms use these, so just define them. They can't hurt if they
1248 # are not supported.
1249 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1251 # Check for *_r functions
1254 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1255 LIBS="$LIBS $PTHREAD_LIBS"
1257 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1258 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1260 AC_CHECK_FUNCS([strerror_r])
1262 # Do test here with the proper thread flags
1263 PGAC_FUNC_STRERROR_R_INT
1269 # do not use values from template file
1274 AC_SUBST(PTHREAD_CFLAGS)
1275 AC_SUBST(PTHREAD_LIBS)
1281 ## Most libraries are included only if they demonstrably provide a function
1282 ## we need, but libm is an exception: always include it, because there are
1283 ## too many compilers that play cute optimization games that will break
1284 ## probes for standard functions such as pow().
1287 AC_CHECK_LIB(m, main)
1288 AC_SEARCH_LIBS(setproctitle, util)
1289 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1290 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1291 # required. Just checking for dlsym() ought to suffice.
1292 AC_SEARCH_LIBS(dlsym, dl)
1293 AC_SEARCH_LIBS(socket, [socket ws2_32])
1294 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1295 AC_SEARCH_LIBS(shm_open, rt)
1296 AC_SEARCH_LIBS(shm_unlink, rt)
1297 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1299 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1301 AC_SEARCH_LIBS(shmget, cygipc)
1303 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1305 if test "$enable_thread_safety" = yes; then
1306 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1309 if test "$with_readline" = yes; then
1311 if test x"$pgac_cv_check_readline" = x"no"; then
1312 AC_MSG_ERROR([readline library not found
1313 If you have readline already installed, see config.log for details on the
1314 failure. It is possible the compiler isn't looking in the proper directory.
1315 Use --without-readline to disable readline support.])
1319 if test "$with_zlib" = yes; then
1320 AC_CHECK_LIB(z, inflate, [],
1321 [AC_MSG_ERROR([zlib library not found
1322 If you have zlib already installed, see config.log for details on the
1323 failure. It is possible the compiler isn't looking in the proper directory.
1324 Use --without-zlib to disable zlib support.])])
1327 if test "$enable_spinlocks" = yes; then
1328 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1331 *** Not using spinlocks will cause poor performance.])
1334 if test "$enable_atomics" = yes; then
1335 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1338 *** Not using atomic operations will cause poor performance.])
1341 if test "$with_gssapi" = yes ; then
1342 if test "$PORTNAME" != "win32"; then
1343 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1344 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1346 LIBS="$LIBS -lgssapi32"
1353 # There is currently only one supported SSL/TLS library: OpenSSL.
1355 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1356 if test x"$with_ssl" = x"" ; then
1359 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1360 if test "$with_openssl" = yes ; then
1364 if test "$with_ssl" = openssl ; then
1366 # Minimum required OpenSSL version is 1.0.1
1367 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1368 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1369 if test "$PORTNAME" != "win32"; then
1370 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1371 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1373 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1374 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1376 # Function introduced in OpenSSL 1.0.2.
1377 AC_CHECK_FUNCS([X509_get_signature_nid])
1378 # Functions introduced in OpenSSL 1.1.0. We used to check for
1379 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1380 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1381 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1383 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1384 # OpenSSL versions before 1.1.0 required setting callback functions, for
1385 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1386 # function was removed.
1387 AC_CHECK_FUNCS([CRYPTO_lock])
1388 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1389 elif test "$with_ssl" != no ; then
1390 AC_MSG_ERROR([--with-ssl must specify openssl])
1394 if test "$with_pam" = yes ; then
1395 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1398 if test "$with_libxml" = yes ; then
1399 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1402 if test "$with_libxslt" = yes ; then
1403 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1406 if test "$with_lz4" = yes ; then
1407 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1410 if test "$with_zstd" = yes ; then
1411 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1414 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1415 # also, on AIX, we may need to have openssl in LIBS for this step.
1416 if test "$with_ldap" = yes ; then
1418 if test "$PORTNAME" != "win32"; then
1419 AC_CHECK_LIB(ldap, ldap_bind, [],
1420 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1422 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1423 # This test is carried out against libldap.
1424 AC_CHECK_FUNCS([ldap_initialize])
1425 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1426 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1427 # library from a separate OpenLDAP installation). The most reliable
1428 # way to check that is to check for a function introduced in 2.5.
1429 AC_CHECK_FUNC([ldap_verify_credentials],
1430 [thread_safe_libldap=yes],
1431 [thread_safe_libldap=no])
1432 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1433 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1434 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1436 AC_CHECK_LIB(ldap_r, ldap_bind,
1437 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1438 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1439 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1441 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1444 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1445 LDAP_LIBS_FE="-lwldap32"
1446 LDAP_LIBS_BE="-lwldap32"
1450 AC_SUBST(LDAP_LIBS_FE)
1451 AC_SUBST(LDAP_LIBS_BE)
1453 # for contrib/sepgsql
1454 if test "$with_selinux" = yes; then
1455 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1456 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1459 # for contrib/uuid-ossp
1460 if test "$with_uuid" = bsd ; then
1461 # On BSD, the UUID functions are in libc
1462 AC_CHECK_FUNC(uuid_to_string,
1464 [AC_MSG_ERROR([BSD UUID functions are not present])])
1465 elif test "$with_uuid" = e2fs ; then
1466 # On macOS, the UUID functions are in libc
1467 AC_CHECK_FUNC(uuid_generate,
1469 [AC_CHECK_LIB(uuid, uuid_generate,
1470 [UUID_LIBS="-luuid"],
1471 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1472 elif test "$with_uuid" = ossp ; then
1473 AC_CHECK_LIB(ossp-uuid, uuid_export,
1474 [UUID_LIBS="-lossp-uuid"],
1475 [AC_CHECK_LIB(uuid, uuid_export,
1476 [UUID_LIBS="-luuid"],
1477 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1488 AC_CHECK_HEADERS(m4_normalize([
1507 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1508 AC_CHECK_HEADERS(readline/readline.h, [],
1509 [AC_CHECK_HEADERS(readline.h, [],
1510 [AC_MSG_ERROR([readline header not found
1511 If you have readline already installed, see config.log for details on the
1512 failure. It is possible the compiler isn't looking in the proper directory.
1513 Use --without-readline to disable readline support.])])])
1514 AC_CHECK_HEADERS(readline/history.h, [],
1515 [AC_CHECK_HEADERS(history.h, [],
1516 [AC_MSG_ERROR([history header not found
1517 If you have readline already installed, see config.log for details on the
1518 failure. It is possible the compiler isn't looking in the proper directory.
1519 Use --without-readline to disable readline support.])])])
1522 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1523 # Some installations of libedit usurp /usr/include/readline/, which seems
1524 # bad practice, since in combined installations readline will have its headers
1525 # there. We might have to resort to AC_EGREP checks to make sure we found
1526 # the proper header...
1527 AC_CHECK_HEADERS(editline/readline.h, [],
1528 [AC_CHECK_HEADERS(readline.h, [],
1529 [AC_CHECK_HEADERS(readline/readline.h, [],
1530 [AC_MSG_ERROR([readline header not found
1531 If you have libedit already installed, see config.log for details on the
1532 failure. It is possible the compiler isn't looking in the proper directory.
1533 Use --without-readline to disable libedit support.])])])])
1534 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1535 # not be there at all. Hence, don't complain if not found. We must check
1536 # though, since in yet other versions it is an independent header.
1537 AC_CHECK_HEADERS(editline/history.h, [],
1538 [AC_CHECK_HEADERS(history.h, [],
1539 [AC_CHECK_HEADERS(readline/history.h)])])
1542 if test "$with_zlib" = yes; then
1543 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1544 If you have zlib already installed, see config.log for details on the
1545 failure. It is possible the compiler isn't looking in the proper directory.
1546 Use --without-zlib to disable zlib support.])])
1549 PGAC_PATH_PROGS(LZ4, lz4)
1550 if test "$with_lz4" = yes; then
1551 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1554 PGAC_PATH_PROGS(ZSTD, zstd)
1555 if test "$with_zstd" = yes; then
1556 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1559 if test "$with_gssapi" = yes ; then
1560 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1561 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1564 PGAC_PATH_PROGS(OPENSSL, openssl)
1565 if test "$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], [$pg_restrict],
1680 [Define to keyword to use for C99 restrict support, or to nothing if not
1683 AC_CHECK_TYPES([struct cmsgcred], [], [],
1684 [#include <sys/socket.h>
1685 #include <sys/param.h>
1686 #ifdef HAVE_SYS_UCRED_H
1687 #include <sys/ucred.h>
1690 AC_CHECK_TYPES([struct option], [], [],
1691 [#ifdef HAVE_GETOPT_H
1695 if test "$with_zlib" = yes; then
1696 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1697 # did not). While we could work around the lack of z_streamp, it
1698 # seems unwise to encourage people to use such old zlib versions...
1699 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1700 Use --without-zlib to disable zlib support.])],
1701 [#include <zlib.h>])
1706 # On x86_64, check if we can compile a popcntq instruction
1707 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1708 [pgac_cv_have_x86_64_popcntq],
1709 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1710 [long long x = 1; long long r;
1711 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1712 [pgac_cv_have_x86_64_popcntq=yes],
1713 [pgac_cv_have_x86_64_popcntq=no])])
1714 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1715 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1719 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1720 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1721 [pgac_cv_have_i_constraint__builtin_constant_p],
1722 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1724 addi(int ra, int si)
1727 if (__builtin_constant_p(si))
1728 __asm__ __volatile__(
1729 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1732 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1733 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1734 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1735 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1736 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1737 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1742 # Check largefile support. You might think this is a system service not a
1743 # compiler characteristic, but you'd be wrong. We must check this before
1744 # probing existence of related functions such as fseeko, since the largefile
1745 # defines can affect what is generated for that.
1746 if test "$PORTNAME" != "win32"; then
1748 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1749 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1750 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1751 dnl versions where the feature actually works, it's on by default anyway.
1752 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1755 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1756 AC_CHECK_SIZEOF([off_t])
1758 # If we don't have largefile support, can't handle segment size >= 2GB.
1759 if test "$ac_cv_sizeof_off_t" -lt 8; then
1760 if expr $RELSEG_SIZE '*' $blocksize '>=' 2 '*' 1024 '*' 1024; then
1761 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1765 AC_CHECK_SIZEOF([bool], [],
1766 [#ifdef HAVE_STDBOOL_H
1767 #include <stdbool.h>
1770 dnl We use <stdbool.h> if we have it and it declares type bool as having
1771 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1772 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1773 AC_DEFINE([PG_USE_STDBOOL], 1,
1774 [Define to 1 to use <stdbool.h> to define type bool.])
1779 ## Functions, global variables
1782 PGAC_VAR_INT_TIMEZONE
1783 PGAC_FUNC_WCSTOMBS_L
1785 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1786 # symbols that that library has no business exposing to the world. Pending
1787 # acquisition of a clue by those developers, ignore libedit (including its
1788 # possible alias of libreadline) while checking for everything else.
1789 LIBS_including_readline="$LIBS"
1790 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1792 AC_CHECK_FUNCS(m4_normalize([
1803 pthread_is_threaded_np
1814 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1815 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1816 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1817 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1818 # We assume that we needn't test all widths of these explicitly:
1819 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1820 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1821 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1822 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1823 # so it needs a different test function.
1824 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1826 # We require 64-bit fseeko() to be available, but run this check anyway
1827 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1830 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1831 # by calling it, 2009-04-02
1832 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1833 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1834 AS_IF([test "$PORTNAME" != "solaris"], [
1835 AC_CHECK_FUNCS(posix_fadvise)
1836 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1839 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1840 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1842 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1843 # won't handle deployment target restrictions on macOS
1844 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1845 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1847 # This is probably only present on macOS, but may as well check always
1848 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1850 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1851 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1852 [#include <machine/vmparam.h>
1853 #include <sys/exec.h>
1855 [PS_STRINGS->ps_nargvstr = 1;
1856 PS_STRINGS->ps_argvstr = "foo";])],
1857 [pgac_cv_var_PS_STRINGS=yes],
1858 [pgac_cv_var_PS_STRINGS=no])])
1859 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1860 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1863 AC_REPLACE_FUNCS(m4_normalize([
1874 if test "$enable_thread_safety" = yes; then
1875 AC_REPLACE_FUNCS(pthread_barrier_wait)
1878 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1879 # Cygwin and (apparently, based on test results) Mingw both
1880 # have a broken strtof(), so substitute its implementation.
1881 # That's not a perfect fix, since it doesn't avoid double-rounding,
1882 # but we have no better options.
1884 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1887 # Similarly, use system's getopt_long() only if system provides struct option.
1888 if test x"$ac_cv_type_struct_option" = xyes ; then
1889 AC_REPLACE_FUNCS([getopt_long])
1891 AC_LIBOBJ(getopt_long)
1894 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1895 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1896 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1900 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1901 # so always use our version on Windows.
1902 if test "$PORTNAME" = "win32"; then
1904 AC_LIBOBJ(getopt_long)
1907 # Win32 (really MinGW) support
1908 if test "$PORTNAME" = "win32"; then
1909 AC_CHECK_FUNCS(_configthreadlocale)
1914 AC_LIBOBJ(win32dlopen)
1916 AC_LIBOBJ(win32error)
1917 AC_LIBOBJ(win32fdatasync)
1918 AC_LIBOBJ(win32getrusage)
1919 AC_LIBOBJ(win32link)
1920 AC_LIBOBJ(win32ntdll)
1921 AC_LIBOBJ(win32pread)
1922 AC_LIBOBJ(win32pwrite)
1923 AC_LIBOBJ(win32security)
1924 AC_LIBOBJ(win32setlocale)
1925 AC_LIBOBJ(win32stat)
1927 # Cygwin needs only a bit of that
1928 if test "$PORTNAME" = "cygwin"; then
1932 AC_CHECK_FUNC(syslog,
1933 [AC_CHECK_HEADER(syslog.h,
1934 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1936 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1937 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1938 [extern int opterr; opterr = 1;])],
1939 [pgac_cv_var_int_opterr=yes],
1940 [pgac_cv_var_int_opterr=no])])
1941 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1942 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1945 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1946 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1947 [extern int optreset; optreset = 1;])],
1948 [pgac_cv_var_int_optreset=yes],
1949 [pgac_cv_var_int_optreset=no])])
1950 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1951 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1954 if test "$with_icu" = yes; then
1955 ac_save_CPPFLAGS=$CPPFLAGS
1956 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1958 # Verify we have ICU's header files
1959 AC_CHECK_HEADER(unicode/ucol.h, [],
1960 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1962 CPPFLAGS=$ac_save_CPPFLAGS
1965 if test "$with_llvm" = yes; then
1966 PGAC_CHECK_LLVM_FUNCTIONS()
1969 # Lastly, restore full LIBS list and check for readline/libedit symbols
1970 LIBS="$LIBS_including_readline"
1972 if test "$with_readline" = yes; then
1973 PGAC_READLINE_VARIABLES
1974 AC_CHECK_FUNCS(m4_normalize([
1976 history_truncate_file
1977 rl_completion_matches
1978 rl_filename_completion_function
1979 rl_reset_screen_size
1985 # This test makes sure that run tests work at all. Sometimes a shared
1986 # library is found by the linker, but the runtime linker can't find it.
1987 # This check should come after all modifications of compiler or linker
1988 # variables, and before any other run tests.
1989 AC_MSG_CHECKING([test program])
1990 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1991 [AC_MSG_RESULT(ok)],
1992 [AC_MSG_RESULT(failed)
1994 Could not execute a simple test program. This may be a problem
1995 related to locating shared libraries. Check the file 'config.log'
1996 for the exact reason.]])],
1997 [AC_MSG_RESULT([cross-compiling])])
1999 # --------------------
2000 # Run tests below here
2001 # --------------------
2003 dnl Check to see if we have a working 64-bit integer type.
2004 dnl Since Postgres 8.4, we no longer support compilers without a working
2005 dnl 64-bit type; but we have to determine whether that type is called
2006 dnl "long int" or "long long int".
2008 PGAC_TYPE_64BIT_INT([long int])
2010 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
2011 pg_int64_type="long int"
2013 PGAC_TYPE_64BIT_INT([long long int])
2014 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2015 pg_int64_type="long long int"
2017 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
2021 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
2022 [Define to the name of a signed 64-bit integer type.])
2024 # Select the printf length modifier that goes with that, too.
2025 if test x"$pg_int64_type" = x"long long int" ; then
2026 INT64_MODIFIER='"ll"'
2028 INT64_MODIFIER='"l"'
2031 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2032 [Define to the appropriate printf length modifier for 64-bit ints.])
2034 # has to be down here, rather than with the other builtins, because
2035 # the test uses PG_INT64_TYPE.
2036 PGAC_C_BUILTIN_OP_OVERFLOW
2038 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2039 AC_CHECK_SIZEOF([void *])
2040 AC_CHECK_SIZEOF([size_t])
2041 AC_CHECK_SIZEOF([long])
2043 # Determine memory alignment requirements for the basic C data types.
2045 AC_CHECK_ALIGNOF(short)
2046 AC_CHECK_ALIGNOF(int)
2047 AC_CHECK_ALIGNOF(long)
2048 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2049 AC_CHECK_ALIGNOF(long long int)
2051 AC_CHECK_ALIGNOF(double)
2053 # Compute maximum alignment of any basic type.
2054 # We assume long's alignment is at least as strong as char, short, or int;
2055 # but we must check long long (if it is being used for int64) and double.
2056 # Note that we intentionally do not consider any types wider than 64 bits,
2057 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2058 # for disk and memory space.
2060 MAX_ALIGNOF=$ac_cv_alignof_long
2061 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2062 MAX_ALIGNOF=$ac_cv_alignof_double
2064 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2065 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2067 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2070 # Some platforms predefine the types int8, int16, etc. Only check
2071 # a (hopefully) representative subset.
2072 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2073 [#include <stdio.h>])
2075 # Some compilers offer a 128-bit integer scalar type.
2076 PGAC_TYPE_128BIT_INT
2078 # Check for various atomic operations now that we have checked how to declare
2080 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2081 PGAC_HAVE_GCC__SYNC_INT32_TAS
2082 PGAC_HAVE_GCC__SYNC_INT32_CAS
2083 PGAC_HAVE_GCC__SYNC_INT64_CAS
2084 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2085 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2088 # Check for x86 cpuid instruction
2089 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2090 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2091 [[unsigned int exx[4] = {0, 0, 0, 0};
2092 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2094 [pgac_cv__get_cpuid="yes"],
2095 [pgac_cv__get_cpuid="no"])])
2096 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2097 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2100 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2101 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2102 [[unsigned int exx[4] = {0, 0, 0, 0};
2103 __get_cpuid(exx[0], 1);
2105 [pgac_cv__cpuid="yes"],
2106 [pgac_cv__cpuid="no"])])
2107 if test x"$pgac_cv__cpuid" = x"yes"; then
2108 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2111 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2113 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2114 # with the default compiler flags. If not, check if adding the -msse4.2
2115 # flag helps. CFLAGS_CRC is set to -msse4.2 if that's required.
2116 PGAC_SSE42_CRC32_INTRINSICS([])
2117 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2118 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2121 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2122 # define __SSE4_2__ in that case.
2123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2125 #error __SSE4_2__ not defined
2127 ])], [SSE4_2_TARGETED=1])
2129 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2131 # First check if __crc32c* intrinsics can be used with the default compiler
2132 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2133 # CFLAGS_CRC is set if the extra flag is required.
2134 PGAC_ARMV8_CRC32C_INTRINSICS([])
2135 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2136 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2139 AC_SUBST(CFLAGS_CRC)
2141 # Select CRC-32C implementation.
2143 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2144 # use the special CRC instructions for calculating CRC-32C. If we're not
2145 # targeting such a processor, but we can nevertheless produce code that uses
2146 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2147 # implementations and select which one to use at runtime, depending on whether
2148 # SSE 4.2 is supported by the processor we're running on.
2150 # Similarly, if we are targeting an ARM processor that has the CRC
2151 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2152 # we're not targeting such a processor, but can nevertheless produce code that
2153 # uses the CRC instructions, compile both, and select at runtime.
2155 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2156 # in the template or configure command line.
2157 if test x"$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
2158 # Use Intel SSE 4.2 if available.
2159 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2162 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2163 # the runtime check.
2164 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2165 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2167 # Use ARM CRC Extension if available.
2168 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_CRC" = x""; then
2171 # ARM CRC Extension, with runtime check?
2172 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2173 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2175 # fall back to slicing-by-8 algorithm, which doesn't require any
2176 # special CPU support.
2177 USE_SLICING_BY_8_CRC32C=1
2184 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2185 AC_MSG_CHECKING([which CRC-32C implementation to use])
2186 if test x"$USE_SSE42_CRC32C" = x"1"; then
2187 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2188 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2189 AC_MSG_RESULT(SSE 4.2)
2191 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2192 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2193 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2194 AC_MSG_RESULT(SSE 4.2 with runtime check)
2196 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2197 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2198 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2199 AC_MSG_RESULT(ARMv8 CRC instructions)
2201 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2202 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2203 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2204 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2206 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2207 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2208 AC_MSG_RESULT(slicing-by-8)
2213 AC_SUBST(PG_CRC32C_OBJS)
2216 # Select semaphore implementation type.
2217 if test "$PORTNAME" != "win32"; then
2218 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2219 # Need sem_open for this
2220 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2222 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2223 # Need sem_init for this
2224 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2226 AC_MSG_CHECKING([which semaphore API to use])
2227 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2228 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2229 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2230 sematype="named POSIX"
2232 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2233 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2234 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2235 sematype="unnamed POSIX"
2237 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2238 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2242 AC_MSG_RESULT([$sematype])
2244 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2245 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2249 # Select shared-memory implementation type.
2250 if test "$PORTNAME" != "win32"; then
2251 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2252 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2254 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2255 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2258 # Select random number source. If a TLS library is used then it will be the
2259 # first choice, else the native platform sources (Windows API or /dev/urandom)
2261 AC_MSG_CHECKING([which random number source to use])
2262 if test x"$with_ssl" = x"openssl" ; then
2263 AC_MSG_RESULT([OpenSSL])
2264 elif test x"$PORTNAME" = x"win32" ; then
2265 AC_MSG_RESULT([Windows native])
2266 elif test x"$cross_compiling" = x"yes"; then
2267 AC_MSG_RESULT([assuming /dev/urandom])
2269 AC_MSG_RESULT([/dev/urandom])
2270 AC_CHECK_FILE([/dev/urandom], [], [])
2272 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2274 no source of strong random numbers was found
2275 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2279 # If not set in template file, set bytes to use libc memset()
2280 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2281 MEMSET_LOOP_LIMIT=1024
2283 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2286 if test "$enable_nls" = yes ; then
2290 # Check for Tcl configuration script tclConfig.sh
2291 if test "$with_tcl" = yes; then
2292 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2293 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2294 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2295 if test "$TCL_SHARED_BUILD" != 1; then
2296 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2297 Use --without-tcl to disable building PL/Tcl.])
2299 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2300 ac_save_CPPFLAGS=$CPPFLAGS
2301 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2302 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2303 CPPFLAGS=$ac_save_CPPFLAGS
2306 # check for <perl.h>
2307 if test "$with_perl" = yes; then
2308 ac_save_CPPFLAGS=$CPPFLAGS
2309 CPPFLAGS="$CPPFLAGS $perl_includespec"
2310 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2311 [#include <EXTERN.h>])
2312 # While we're at it, check that we can link to libperl.
2313 # On most platforms, if perl.h is there then libperl.so will be too, but at
2314 # this writing Debian packages them separately. There is no known reason to
2315 # waste cycles on separate probes for the Tcl or Python libraries, though.
2316 # On some Red Hat platforms, the link attempt can fail if we don't use
2317 # CFLAGS_SL while building the test program.
2318 ac_save_CFLAGS=$CFLAGS
2319 CFLAGS="$CFLAGS $CFLAGS_SL"
2320 pgac_save_LIBS=$LIBS
2321 LIBS="$perl_embed_ldflags"
2322 AC_MSG_CHECKING([for libperl])
2323 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2326 ], [perl_alloc();])],
2327 [AC_MSG_RESULT(yes)],
2329 AC_MSG_ERROR([libperl library is required for Perl])])
2330 LIBS=$pgac_save_LIBS
2331 CFLAGS=$ac_save_CFLAGS
2332 CPPFLAGS=$ac_save_CPPFLAGS
2335 # check for <Python.h>
2336 if test "$with_python" = yes; then
2337 ac_save_CPPFLAGS=$CPPFLAGS
2338 CPPFLAGS="$python_includespec $CPPFLAGS"
2339 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2340 CPPFLAGS=$ac_save_CPPFLAGS
2344 # Check for documentation-building tools
2346 PGAC_PATH_PROGS(XMLLINT, xmllint)
2347 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2348 PGAC_PATH_PROGS(FOP, fop)
2349 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2352 # Check for test tools
2354 if test "$enable_tap_tests" = yes; then
2355 # Make sure we know where prove is.
2356 PGAC_PATH_PROGS(PROVE, prove)
2357 if test -z "$PROVE"; then
2358 AC_MSG_ERROR([prove not found])
2360 # Check for necessary Perl modules. You might think we should use
2361 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2362 # installation than perl, eg on MSys, so we have to check using prove.
2363 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2364 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2365 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2366 if test $? -eq 0; then
2367 # log the module version details, but don't show them interactively
2368 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2371 # on failure, though, show the results to the user
2372 AC_MSG_RESULT([$modulestderr])
2373 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2377 # If compiler will take -Wl,--as-needed (or various platform-specific
2378 # spellings thereof) then add that to LDFLAGS. This is much easier than
2379 # trying to filter LIBS to the minimum for each executable.
2380 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2381 # libreadline; therefore we postpone testing it until we know what library
2382 # dependencies readline has. The test code will try to link with $LIBS.
2383 if test "$with_readline" = yes; then
2384 link_test_func=readline
2389 if test "$PORTNAME" = "darwin"; then
2390 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2391 elif test "$PORTNAME" = "openbsd"; then
2392 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2394 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2397 # For linkers that understand --export-dynamic, add that to the LDFLAGS_EX_BE
2398 # (backend specific ldflags). One some platforms this will always fail (e.g.,
2399 # windows), but on others it depends on the choice of linker (e.g., solaris).
2400 PGAC_PROG_CC_LD_VARFLAGS_OPT(LDFLAGS_EX_BE, [-Wl,--export-dynamic], $link_test_func)
2401 AC_SUBST(LDFLAGS_EX_BE)
2403 # Create compiler version string
2404 if test x"$GCC" = x"yes" ; then
2405 cc_string=`${CC} --version | sed q`
2406 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2407 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2408 cc_string=`${CC} -V 2>&1 | sed q`
2413 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2414 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2415 [A string containing the version number, platform, and C compiler])
2417 # Supply a numeric version string for use by 3rd party add-ons
2418 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2419 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2420 $AWK '{printf "%d%04d", $1, $2}'`"]
2421 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2422 AC_SUBST(PG_VERSION_NUM)
2424 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2425 # literally, so that it's possible to override it at build time using
2426 # a command like "make ... PG_SYSROOT=path". This has to be done after
2427 # we've finished all configure checks that depend on CPPFLAGS.
2428 # The same for LDFLAGS, too.
2429 if test x"$PG_SYSROOT" != x; then
2430 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2431 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2433 AC_SUBST(PG_SYSROOT)
2436 # Begin output steps
2438 AC_MSG_NOTICE([using compiler=$cc_string])
2439 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2440 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2441 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2442 # Currently only used when LLVM is used
2443 if test "$with_llvm" = yes ; then
2444 AC_MSG_NOTICE([using CXX=$CXX])
2445 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2446 AC_MSG_NOTICE([using CLANG=$CLANG])
2447 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2448 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2451 # prepare build tree if outside source tree
2452 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2453 # Note 2: /bin/pwd might be better than shell's built-in at getting
2454 # a symlink-free name.
2455 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2459 if test "$no_create" != yes; then
2460 _AS_ECHO_N([preparing build tree... ])
2461 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2462 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2463 || AC_MSG_ERROR(failed)
2467 AC_SUBST(vpath_build)
2470 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2473 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2474 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2475 src/include/pg_config_os.h:src/include/port/${template}.h
2476 src/Makefile.port:src/makefiles/Makefile.${template}
2479 if test "$PORTNAME" = "win32"; then
2480 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2481 # Links sometimes fail undetected on Mingw -
2482 # so here we detect it and warn the user
2483 for FILE in $CONFIG_LINKS
2485 # test -e works for symlinks in the MinGW console
2486 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2491 AC_CONFIG_HEADERS([src/include/pg_config.h],
2493 # Update timestamp for pg_config.h (see Makefile.global)
2494 echo >src/include/stamp-h
2497 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2499 # Update timestamp for pg_config_ext.h (see Makefile.global)
2500 echo >src/include/stamp-ext-h
2503 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2504 [echo >src/interfaces/ecpg/include/stamp-h])
2508 # Ensure that any meson build directories would reconfigure and see that
2509 # there's a conflicting in-tree build and can error out.
2510 if test "$vpath_build"="no"; then