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([$enable_thread_safety])
850 AC_SUBST(enable_thread_safety)
855 AC_MSG_CHECKING([whether to build with ICU support])
856 PGAC_ARG_BOOL(with, icu, yes, [build without ICU support],
857 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
858 AC_MSG_RESULT([$with_icu])
861 if test "$with_icu" = yes; then
862 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n, [],
863 [AC_MSG_ERROR([ICU library not found
864 If you have ICU already installed, see config.log for details on the
865 failure. It is possible the compiler isn't looking in the proper directory.
866 Use --without-icu to disable ICU support.])])
870 # Optionally build Tcl modules (PL/Tcl)
872 AC_MSG_CHECKING([whether to build with Tcl])
873 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
874 AC_MSG_RESULT([$with_tcl])
877 # We see if the path to the Tcl/Tk configuration scripts is specified.
878 # This will override the use of tclsh to find the paths to search.
880 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
883 # Optionally build Perl modules (PL/Perl)
885 AC_MSG_CHECKING([whether to build Perl modules])
886 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
887 AC_MSG_RESULT([$with_perl])
891 # Optionally build Python modules (PL/Python)
893 AC_MSG_CHECKING([whether to build Python modules])
894 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
895 AC_MSG_RESULT([$with_python])
896 AC_SUBST(with_python)
901 AC_MSG_CHECKING([whether to build with GSSAPI support])
902 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
904 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
905 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
907 AC_MSG_RESULT([$with_gssapi])
908 AC_SUBST(with_gssapi)
915 # Kerberos configuration parameters
917 PGAC_ARG_REQ(with, krb-srvnam,
918 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
920 [with_krb_srvnam="postgres"])
921 AC_SUBST(with_krb_srvnam)
922 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
923 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
929 AC_MSG_CHECKING([whether to build with PAM support])
930 PGAC_ARG_BOOL(with, pam, no,
931 [build with PAM support],
932 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
933 AC_MSG_RESULT([$with_pam])
939 AC_MSG_CHECKING([whether to build with BSD Authentication support])
940 PGAC_ARG_BOOL(with, bsd-auth, no,
941 [build with BSD Authentication support],
942 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
943 AC_MSG_RESULT([$with_bsd_auth])
949 AC_MSG_CHECKING([whether to build with LDAP support])
950 PGAC_ARG_BOOL(with, ldap, no,
951 [build with LDAP support],
952 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
953 AC_MSG_RESULT([$with_ldap])
960 AC_MSG_CHECKING([whether to build with Bonjour support])
961 PGAC_ARG_BOOL(with, bonjour, no,
962 [build with Bonjour support],
963 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
964 AC_MSG_RESULT([$with_bonjour])
970 AC_MSG_CHECKING([whether to build with SELinux support])
971 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
972 AC_SUBST(with_selinux)
973 AC_MSG_RESULT([$with_selinux])
978 AC_MSG_CHECKING([whether to build with systemd support])
979 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
980 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
981 AC_SUBST(with_systemd)
982 AC_MSG_RESULT([$with_systemd])
987 PGAC_ARG_BOOL(with, readline, yes,
988 [do not use GNU Readline nor BSD Libedit for editing])
989 # readline on MinGW has problems with backslashes in psql and other bugs.
990 # This is particularly a problem with non-US code pages.
991 # Therefore disable its use until we understand the cause. 2004-07-20
992 if test "$PORTNAME" = "win32"; then
993 if test "$with_readline" = yes; then
994 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
998 AC_SUBST(with_readline)
1004 PGAC_ARG_BOOL(with, libedit-preferred, no,
1005 [prefer BSD Libedit over GNU Readline])
1011 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
1012 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
1013 # UUID library. More than one of these might be present on a given platform,
1014 # so we make the user say which one she wants.
1016 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
1017 if test x"$with_uuid" = x"" ; then
1020 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
1021 if test "$with_ossp_uuid" = yes ; then
1025 if test "$with_uuid" != no ; then
1026 if test "$with_uuid" = bsd ; then
1027 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
1028 elif test "$with_uuid" = e2fs ; then
1029 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1030 elif test "$with_uuid" = ossp ; then
1031 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1033 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1042 AC_MSG_CHECKING([whether to build with XML support])
1043 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1044 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1045 AC_MSG_RESULT([$with_libxml])
1046 AC_SUBST(with_libxml)
1048 if test "$with_libxml" = yes ; then
1049 # Check pkg-config, then xml2-config. But for backwards compatibility,
1050 # setting XML2_CONFIG overrides pkg-config.
1051 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1052 have_libxml2_pkg_config=no
1053 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1054 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1055 [have_libxml2_pkg_config=yes], [# do nothing])
1057 if test "$have_libxml2_pkg_config" = no ; then
1058 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1059 if test -n "$XML2_CONFIG"; then
1060 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1061 XML2_LIBS=`$XML2_CONFIG --libs`
1064 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1065 for pgac_option in $XML2_CFLAGS; do
1066 case $pgac_option in
1067 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1070 for pgac_option in $XML2_LIBS; do
1071 case $pgac_option in
1072 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1081 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1082 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1085 AC_SUBST(with_libxslt)
1090 PGAC_ARG_REQ(with, system-tzdata,
1091 [DIR], [use system time zone data in DIR])
1092 AC_SUBST(with_system_tzdata)
1097 PGAC_ARG_BOOL(with, zlib, yes,
1104 AC_MSG_CHECKING([whether to build with LZ4 support])
1105 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1106 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1107 AC_MSG_RESULT([$with_lz4])
1110 if test "$with_lz4" = yes; then
1111 PKG_CHECK_MODULES(LZ4, liblz4)
1112 # We only care about -I, -D, and -L switches;
1113 # note that -llz4 will be added by AC_CHECK_LIB below.
1114 for pgac_option in $LZ4_CFLAGS; do
1115 case $pgac_option in
1116 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1119 for pgac_option in $LZ4_LIBS; do
1120 case $pgac_option in
1121 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1129 AC_MSG_CHECKING([whether to build with ZSTD support])
1130 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1131 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1132 AC_MSG_RESULT([$with_zstd])
1135 if test "$with_zstd" = yes; then
1136 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1137 # We only care about -I, -D, and -L switches;
1138 # note that -lzstd will be added by AC_CHECK_LIB below.
1139 for pgac_option in $ZSTD_CFLAGS; do
1140 case $pgac_option in
1141 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1144 for pgac_option in $ZSTD_LIBS; do
1145 case $pgac_option in
1146 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1154 CPPFLAGS="$CPPFLAGS $INCLUDES"
1155 LDFLAGS="$LDFLAGS $LIBDIRS"
1157 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1158 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1161 AC_CHECK_TOOL(AR, ar, ar)
1162 if test "$PORTNAME" = "win32"; then
1163 AC_CHECK_TOOL(WINDRES, windres, windres)
1167 # When Autoconf chooses install-sh as install program it tries to generate
1168 # a relative path to it in each makefile where it substitutes it. This clashes
1169 # with our Makefile.global concept. This workaround helps.
1171 *install-sh*) install_bin='';;
1172 *) install_bin=$INSTALL;;
1174 AC_SUBST(install_bin)
1176 PGAC_PATH_PROGS(TAR, tar)
1179 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1180 # a relative path to it in each makefile where it substitutes it. This clashes
1181 # with our Makefile.global concept. This workaround helps.
1183 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1190 if test "$with_perl" = yes; then
1191 if test -z "$PERL"; then
1192 AC_MSG_ERROR([Perl not found])
1194 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1195 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1196 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1197 You might have to rebuild your Perl installation. Refer to the
1198 documentation for details. Use --without-perl to disable building
1201 # On most platforms, archlibexp is also where the Perl include files live ...
1202 perl_includespec="-I$perl_archlibexp/CORE"
1203 # ... but on newer macOS versions, we must use -iwithsysroot to look
1205 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1206 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1207 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1210 AC_SUBST(perl_includespec)dnl
1211 PGAC_CHECK_PERL_EMBED_CCFLAGS
1212 PGAC_CHECK_PERL_EMBED_LDFLAGS
1215 if test "$with_python" = yes; then
1217 PGAC_CHECK_PYTHON_EMBED_SETUP
1220 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1221 PGAC_PATH_PROGS(ZIC, zic)
1222 if test -z "$ZIC"; then
1224 When cross-compiling, either use the option --with-system-tzdata to use
1225 existing time-zone data, or set the environment variable ZIC to a zic
1226 program to use during the build.])
1233 # For each platform, we need to know about any special compile and link
1234 # libraries, and whether the normal C function names are thread-safe.
1235 # See the comment at the top of src/port/thread.c for more information.
1236 # WIN32 doesn't need the pthread tests; it always uses threads
1238 # These tests are run before the library-tests, because linking with the
1239 # other libraries can pull in the pthread functions as a side-effect. We
1240 # want to use the -pthread or similar flags directly, and not rely on
1241 # the side-effects of linking with some other library.
1243 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1244 dnl invocation below is the first one in the script, and autoconf generates
1245 dnl additional code for that, which must not be inside the if-block. AS_IF
1246 dnl knows how to do that.
1247 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1249 AX_PTHREAD # set thread flags
1251 # Some platforms use these, so just define them. They can't hurt if they
1252 # are not supported.
1253 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1255 # Check for *_r functions
1258 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1259 LIBS="$LIBS $PTHREAD_LIBS"
1261 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1262 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1264 AC_CHECK_FUNCS([strerror_r])
1266 # Do test here with the proper thread flags
1267 PGAC_FUNC_STRERROR_R_INT
1273 # do not use values from template file
1278 AC_SUBST(PTHREAD_CFLAGS)
1279 AC_SUBST(PTHREAD_LIBS)
1285 ## Most libraries are included only if they demonstrably provide a function
1286 ## we need, but libm is an exception: always include it, because there are
1287 ## too many compilers that play cute optimization games that will break
1288 ## probes for standard functions such as pow().
1291 AC_CHECK_LIB(m, main)
1292 AC_SEARCH_LIBS(setproctitle, util)
1293 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1294 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1295 # required. Just checking for dlsym() ought to suffice.
1296 AC_SEARCH_LIBS(dlsym, dl)
1297 AC_SEARCH_LIBS(socket, [socket ws2_32])
1298 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1299 AC_SEARCH_LIBS(shm_open, rt)
1300 AC_SEARCH_LIBS(shm_unlink, rt)
1301 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1303 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1305 AC_SEARCH_LIBS(shmget, cygipc)
1307 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1309 if test "$enable_thread_safety" = yes; then
1310 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1313 if test "$with_readline" = yes; then
1315 if test x"$pgac_cv_check_readline" = x"no"; then
1316 AC_MSG_ERROR([readline library not found
1317 If you have readline already installed, see config.log for details on the
1318 failure. It is possible the compiler isn't looking in the proper directory.
1319 Use --without-readline to disable readline support.])
1323 if test "$with_zlib" = yes; then
1324 AC_CHECK_LIB(z, inflate, [],
1325 [AC_MSG_ERROR([zlib library not found
1326 If you have zlib already installed, see config.log for details on the
1327 failure. It is possible the compiler isn't looking in the proper directory.
1328 Use --without-zlib to disable zlib support.])])
1331 if test "$enable_spinlocks" = yes; then
1332 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1335 *** Not using spinlocks will cause poor performance.])
1338 if test "$enable_atomics" = yes; then
1339 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1342 *** Not using atomic operations will cause poor performance.])
1345 if test "$with_gssapi" = yes ; then
1346 if test "$PORTNAME" != "win32"; then
1347 AC_SEARCH_LIBS(gss_store_cred_into, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1348 [AC_MSG_ERROR([could not find function 'gss_store_cred_into' required for GSSAPI])])
1350 LIBS="$LIBS -lgssapi32"
1357 # There is currently only one supported SSL/TLS library: OpenSSL.
1359 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1360 if test x"$with_ssl" = x"" ; then
1363 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1364 if test "$with_openssl" = yes ; then
1368 if test "$with_ssl" = openssl ; then
1370 # Minimum required OpenSSL version is 1.0.1
1371 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1372 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1373 if test "$PORTNAME" != "win32"; then
1374 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1375 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1377 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1378 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1380 # Functions introduced in OpenSSL 1.0.2. LibreSSL does not have
1381 # SSL_CTX_set_cert_cb().
1382 AC_CHECK_FUNCS([X509_get_signature_nid SSL_CTX_set_cert_cb])
1383 # Functions introduced in OpenSSL 1.1.0. We used to check for
1384 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1385 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1386 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1388 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1389 # OpenSSL versions before 1.1.0 required setting callback functions, for
1390 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1391 # function was removed.
1392 AC_CHECK_FUNCS([CRYPTO_lock])
1393 # Function introduced in OpenSSL 1.1.1.
1394 AC_CHECK_FUNCS([X509_get_signature_info])
1395 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1396 elif test "$with_ssl" != no ; then
1397 AC_MSG_ERROR([--with-ssl must specify openssl])
1401 if test "$with_pam" = yes ; then
1402 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1405 if test "$with_libxml" = yes ; then
1406 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1409 if test "$with_libxslt" = yes ; then
1410 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1413 if test "$with_lz4" = yes ; then
1414 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1417 if test "$with_zstd" = yes ; then
1418 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1421 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1422 # also, on AIX, we may need to have openssl in LIBS for this step.
1423 if test "$with_ldap" = yes ; then
1425 if test "$PORTNAME" != "win32"; then
1426 AC_CHECK_LIB(ldap, ldap_bind, [],
1427 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1429 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1430 # This test is carried out against libldap.
1431 AC_CHECK_FUNCS([ldap_initialize])
1432 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1433 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1434 # library from a separate OpenLDAP installation). The most reliable
1435 # way to check that is to check for a function introduced in 2.5.
1436 AC_CHECK_FUNC([ldap_verify_credentials],
1437 [thread_safe_libldap=yes],
1438 [thread_safe_libldap=no])
1439 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1440 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1441 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1443 AC_CHECK_LIB(ldap_r, ldap_bind,
1444 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1445 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1446 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1448 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1451 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1452 LDAP_LIBS_FE="-lwldap32"
1453 LDAP_LIBS_BE="-lwldap32"
1457 AC_SUBST(LDAP_LIBS_FE)
1458 AC_SUBST(LDAP_LIBS_BE)
1460 # for contrib/sepgsql
1461 if test "$with_selinux" = yes; then
1462 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1463 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1466 # for contrib/uuid-ossp
1467 if test "$with_uuid" = bsd ; then
1468 # On BSD, the UUID functions are in libc
1469 AC_CHECK_FUNC(uuid_to_string,
1471 [AC_MSG_ERROR([BSD UUID functions are not present])])
1472 elif test "$with_uuid" = e2fs ; then
1473 # On macOS, the UUID functions are in libc
1474 AC_CHECK_FUNC(uuid_generate,
1476 [AC_CHECK_LIB(uuid, uuid_generate,
1477 [UUID_LIBS="-luuid"],
1478 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1479 elif test "$with_uuid" = ossp ; then
1480 AC_CHECK_LIB(ossp-uuid, uuid_export,
1481 [UUID_LIBS="-lossp-uuid"],
1482 [AC_CHECK_LIB(uuid, uuid_export,
1483 [UUID_LIBS="-luuid"],
1484 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1495 AC_CHECK_HEADERS(m4_normalize([
1514 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1515 AC_CHECK_HEADERS(readline/readline.h, [],
1516 [AC_CHECK_HEADERS(readline.h, [],
1517 [AC_MSG_ERROR([readline header not found
1518 If you have readline already installed, see config.log for details on the
1519 failure. It is possible the compiler isn't looking in the proper directory.
1520 Use --without-readline to disable readline support.])])])
1521 AC_CHECK_HEADERS(readline/history.h, [],
1522 [AC_CHECK_HEADERS(history.h, [],
1523 [AC_MSG_ERROR([history header not found
1524 If you have readline already installed, see config.log for details on the
1525 failure. It is possible the compiler isn't looking in the proper directory.
1526 Use --without-readline to disable readline support.])])])
1529 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1530 # Some installations of libedit usurp /usr/include/readline/, which seems
1531 # bad practice, since in combined installations readline will have its headers
1532 # there. We might have to resort to AC_EGREP checks to make sure we found
1533 # the proper header...
1534 AC_CHECK_HEADERS(editline/readline.h, [],
1535 [AC_CHECK_HEADERS(readline.h, [],
1536 [AC_CHECK_HEADERS(readline/readline.h, [],
1537 [AC_MSG_ERROR([readline header not found
1538 If you have libedit already installed, see config.log for details on the
1539 failure. It is possible the compiler isn't looking in the proper directory.
1540 Use --without-readline to disable libedit support.])])])])
1541 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1542 # not be there at all. Hence, don't complain if not found. We must check
1543 # though, since in yet other versions it is an independent header.
1544 AC_CHECK_HEADERS(editline/history.h, [],
1545 [AC_CHECK_HEADERS(history.h, [],
1546 [AC_CHECK_HEADERS(readline/history.h)])])
1549 if test "$with_zlib" = yes; then
1550 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1551 If you have zlib already installed, see config.log for details on the
1552 failure. It is possible the compiler isn't looking in the proper directory.
1553 Use --without-zlib to disable zlib support.])])
1556 PGAC_PATH_PROGS(LZ4, lz4)
1557 if test "$with_lz4" = yes; then
1558 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1561 PGAC_PATH_PROGS(ZSTD, zstd)
1562 if test "$with_zstd" = yes; then
1563 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1566 if test "$with_gssapi" = yes ; then
1567 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1568 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1569 AC_CHECK_HEADERS(gssapi/gssapi_ext.h, [],
1570 [AC_CHECK_HEADERS(gssapi_ext.h, [], [AC_MSG_ERROR([gssapi_ext.h header file is required for GSSAPI])])])
1573 PGAC_PATH_PROGS(OPENSSL, openssl)
1574 if test "$with_ssl" = openssl ; then
1575 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1576 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1579 if test "$with_pam" = yes ; then
1580 AC_CHECK_HEADERS(security/pam_appl.h, [],
1581 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1582 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1585 if test "$with_bsd_auth" = yes ; then
1586 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1589 if test "$with_systemd" = yes ; then
1590 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1593 if test "$with_libxml" = yes ; then
1594 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1597 if test "$with_libxslt" = yes ; then
1598 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1601 if test "$with_ldap" = yes ; then
1602 if test "$PORTNAME" != "win32"; then
1603 AC_CHECK_HEADER(ldap.h, [],
1604 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1607 AC_CHECK_HEADER(winldap.h, [],
1608 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1609 [AC_INCLUDES_DEFAULT
1610 #include <windows.h>
1615 if test "$with_bonjour" = yes ; then
1616 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1617 dnl At some point we might add something like
1618 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1619 dnl but right now, what that would mainly accomplish is to encourage
1620 dnl people to try to use the avahi implementation, which does not work.
1621 dnl If you want to use Apple's own Bonjour code on another platform,
1622 dnl just add -ldns_sd to LIBS manually.
1625 # for contrib/uuid-ossp
1626 if test "$with_uuid" = bsd ; then
1627 AC_CHECK_HEADERS(uuid.h,
1628 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1629 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1630 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1631 elif test "$with_uuid" = e2fs ; then
1632 AC_CHECK_HEADERS(uuid/uuid.h,
1633 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1634 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1635 [AC_CHECK_HEADERS(uuid.h,
1636 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1637 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1638 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1639 elif test "$with_uuid" = ossp ; then
1640 AC_CHECK_HEADERS(ossp/uuid.h,
1641 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1642 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1643 [AC_CHECK_HEADERS(uuid.h,
1644 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1645 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1646 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1649 if test "$PORTNAME" = "win32" ; then
1650 AC_CHECK_HEADERS(crtdefs.h)
1654 ## Types, structures, compiler characteristics
1657 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1660 PGAC_PRINTF_ARCHETYPE
1661 PGAC_C_STATIC_ASSERT
1663 PGAC_C_TYPES_COMPATIBLE
1664 PGAC_C_BUILTIN_CONSTANT_P
1665 PGAC_C_BUILTIN_UNREACHABLE
1666 PGAC_C_COMPUTED_GOTO
1667 PGAC_STRUCT_TIMEZONE
1669 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1670 PGAC_STRUCT_SOCKADDR_SA_LEN
1674 # MSVC doesn't cope well with defining restrict to __restrict, the
1675 # spelling it understands, because it conflicts with
1676 # __declspec(restrict). Therefore we define pg_restrict to the
1677 # appropriate definition, which presumably won't conflict.
1679 # Allow platforms with buggy compilers to force restrict to not be
1680 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1683 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1686 pg_restrict="$ac_cv_c_restrict"
1688 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1689 [Define to keyword to use for C99 restrict support, or to nothing if not
1692 AC_CHECK_TYPES([struct option], [], [],
1693 [#ifdef HAVE_GETOPT_H
1697 if test "$with_zlib" = yes; then
1698 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1699 # did not). While we could work around the lack of z_streamp, it
1700 # seems unwise to encourage people to use such old zlib versions...
1701 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1702 Use --without-zlib to disable zlib support.])],
1703 [#include <zlib.h>])
1708 # On x86_64, check if we can compile a popcntq instruction
1709 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1710 [pgac_cv_have_x86_64_popcntq],
1711 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1712 [long long x = 1; long long r;
1713 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1714 [pgac_cv_have_x86_64_popcntq=yes],
1715 [pgac_cv_have_x86_64_popcntq=no])])
1716 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1717 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1721 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1722 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1723 [pgac_cv_have_i_constraint__builtin_constant_p],
1724 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1726 addi(int ra, int si)
1729 if (__builtin_constant_p(si))
1730 __asm__ __volatile__(
1731 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1734 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1735 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1736 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1737 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1738 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1739 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1744 # Check largefile support. You might think this is a system service not a
1745 # compiler characteristic, but you'd be wrong. We must check this before
1746 # probing existence of related functions such as fseeko, since the largefile
1747 # defines can affect what is generated for that.
1748 if test "$PORTNAME" != "win32"; then
1750 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1751 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1752 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1753 dnl versions where the feature actually works, it's on by default anyway.
1754 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1757 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1758 AC_CHECK_SIZEOF([off_t])
1760 # If we don't have largefile support, can't handle segment size >= 2GB.
1761 if test "$ac_cv_sizeof_off_t" -lt 8; then
1762 if expr $RELSEG_SIZE '*' $blocksize '>=' 2 '*' 1024 '*' 1024; then
1763 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1767 AC_CHECK_SIZEOF([bool], [],
1768 [#ifdef HAVE_STDBOOL_H
1769 #include <stdbool.h>
1772 dnl We use <stdbool.h> if we have it and it declares type bool as having
1773 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1774 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1775 AC_DEFINE([PG_USE_STDBOOL], 1,
1776 [Define to 1 to use <stdbool.h> to define type bool.])
1781 ## Functions, global variables
1784 PGAC_VAR_INT_TIMEZONE
1785 PGAC_FUNC_WCSTOMBS_L
1787 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1788 # symbols that that library has no business exposing to the world. Pending
1789 # acquisition of a clue by those developers, ignore libedit (including its
1790 # possible alias of libreadline) while checking for everything else.
1791 LIBS_including_readline="$LIBS"
1792 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1794 AC_CHECK_FUNCS(m4_normalize([
1805 pthread_is_threaded_np
1816 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1817 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1818 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1819 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1820 # We assume that we needn't test all widths of these explicitly:
1821 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1822 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1823 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1824 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1825 # so it needs a different test function.
1826 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1828 # We require 64-bit fseeko() to be available, but run this check anyway
1829 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1832 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1833 # by calling it, 2009-04-02
1834 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1835 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1836 AS_IF([test "$PORTNAME" != "solaris"], [
1837 AC_CHECK_FUNCS(posix_fadvise)
1838 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1841 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1842 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1844 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1845 # won't handle deployment target restrictions on macOS
1846 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1847 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1849 # This is probably only present on macOS, but may as well check always
1850 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1852 AC_REPLACE_FUNCS(m4_normalize([
1863 if test "$enable_thread_safety" = yes; then
1864 AC_REPLACE_FUNCS(pthread_barrier_wait)
1867 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1868 # Cygwin and (apparently, based on test results) Mingw both
1869 # have a broken strtof(), so substitute its implementation.
1870 # That's not a perfect fix, since it doesn't avoid double-rounding,
1871 # but we have no better options.
1873 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1876 # Similarly, use system's getopt_long() only if system provides struct option.
1877 if test x"$ac_cv_type_struct_option" = xyes ; then
1878 AC_REPLACE_FUNCS([getopt_long])
1880 AC_LIBOBJ(getopt_long)
1883 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1884 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1885 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1889 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1890 # so always use our version on Windows.
1891 if test "$PORTNAME" = "win32"; then
1893 AC_LIBOBJ(getopt_long)
1896 # Win32 (really MinGW) support
1897 if test "$PORTNAME" = "win32"; then
1898 AC_CHECK_FUNCS(_configthreadlocale)
1903 AC_LIBOBJ(win32common)
1904 AC_LIBOBJ(win32dlopen)
1906 AC_LIBOBJ(win32error)
1907 AC_LIBOBJ(win32fdatasync)
1908 AC_LIBOBJ(win32getrusage)
1909 AC_LIBOBJ(win32link)
1910 AC_LIBOBJ(win32ntdll)
1911 AC_LIBOBJ(win32pread)
1912 AC_LIBOBJ(win32pwrite)
1913 AC_LIBOBJ(win32security)
1914 AC_LIBOBJ(win32setlocale)
1915 AC_LIBOBJ(win32stat)
1917 # Cygwin needs only a bit of that
1918 if test "$PORTNAME" = "cygwin"; then
1922 AC_CHECK_FUNC(syslog,
1923 [AC_CHECK_HEADER(syslog.h,
1924 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1926 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1927 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1928 [extern int opterr; opterr = 1;])],
1929 [pgac_cv_var_int_opterr=yes],
1930 [pgac_cv_var_int_opterr=no])])
1931 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1932 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1935 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1936 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1937 [extern int optreset; optreset = 1;])],
1938 [pgac_cv_var_int_optreset=yes],
1939 [pgac_cv_var_int_optreset=no])])
1940 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1941 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1944 if test "$with_icu" = yes; then
1945 ac_save_CPPFLAGS=$CPPFLAGS
1946 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1948 # Verify we have ICU's header files
1949 AC_CHECK_HEADER(unicode/ucol.h, [],
1950 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1952 CPPFLAGS=$ac_save_CPPFLAGS
1955 if test "$with_llvm" = yes; then
1956 PGAC_CHECK_LLVM_FUNCTIONS()
1959 # Lastly, restore full LIBS list and check for readline/libedit symbols
1960 LIBS="$LIBS_including_readline"
1962 if test "$with_readline" = yes; then
1963 PGAC_READLINE_VARIABLES
1964 AC_CHECK_FUNCS(m4_normalize([
1966 history_truncate_file
1967 rl_completion_matches
1968 rl_filename_completion_function
1969 rl_reset_screen_size
1975 # This test makes sure that run tests work at all. Sometimes a shared
1976 # library is found by the linker, but the runtime linker can't find it.
1977 # This check should come after all modifications of compiler or linker
1978 # variables, and before any other run tests.
1979 AC_MSG_CHECKING([test program])
1980 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1981 [AC_MSG_RESULT(ok)],
1982 [AC_MSG_RESULT(failed)
1984 Could not execute a simple test program. This may be a problem
1985 related to locating shared libraries. Check the file 'config.log'
1986 for the exact reason.]])],
1987 [AC_MSG_RESULT([cross-compiling])])
1989 # --------------------
1990 # Run tests below here
1991 # --------------------
1993 dnl Check to see if we have a working 64-bit integer type.
1994 dnl Since Postgres 8.4, we no longer support compilers without a working
1995 dnl 64-bit type; but we have to determine whether that type is called
1996 dnl "long int" or "long long int".
1998 PGAC_TYPE_64BIT_INT([long int])
2000 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
2001 pg_int64_type="long int"
2003 PGAC_TYPE_64BIT_INT([long long int])
2004 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2005 pg_int64_type="long long int"
2007 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
2011 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
2012 [Define to the name of a signed 64-bit integer type.])
2014 # Select the printf length modifier that goes with that, too.
2015 if test x"$pg_int64_type" = x"long long int" ; then
2016 INT64_MODIFIER='"ll"'
2018 INT64_MODIFIER='"l"'
2021 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2022 [Define to the appropriate printf length modifier for 64-bit ints.])
2024 # has to be down here, rather than with the other builtins, because
2025 # the test uses PG_INT64_TYPE.
2026 PGAC_C_BUILTIN_OP_OVERFLOW
2028 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2029 AC_CHECK_SIZEOF([void *])
2030 AC_CHECK_SIZEOF([size_t])
2031 AC_CHECK_SIZEOF([long])
2033 # Determine memory alignment requirements for the basic C data types.
2035 AC_CHECK_ALIGNOF(short)
2036 AC_CHECK_ALIGNOF(int)
2037 AC_CHECK_ALIGNOF(long)
2038 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2039 AC_CHECK_ALIGNOF(long long int)
2041 AC_CHECK_ALIGNOF(double)
2043 # Compute maximum alignment of any basic type.
2044 # We assume long's alignment is at least as strong as char, short, or int;
2045 # but we must check long long (if it is being used for int64) and double.
2046 # Note that we intentionally do not consider any types wider than 64 bits,
2047 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2048 # for disk and memory space.
2050 MAX_ALIGNOF=$ac_cv_alignof_long
2051 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2052 MAX_ALIGNOF=$ac_cv_alignof_double
2054 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2055 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2057 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2060 # Some platforms predefine the types int8, int16, etc. Only check
2061 # a (hopefully) representative subset.
2062 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2063 [#include <stdio.h>])
2065 # Some compilers offer a 128-bit integer scalar type.
2066 PGAC_TYPE_128BIT_INT
2068 # Check for various atomic operations now that we have checked how to declare
2070 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2071 PGAC_HAVE_GCC__SYNC_INT32_TAS
2072 PGAC_HAVE_GCC__SYNC_INT32_CAS
2073 PGAC_HAVE_GCC__SYNC_INT64_CAS
2074 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2075 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2078 # Check for x86 cpuid instruction
2079 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2080 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2081 [[unsigned int exx[4] = {0, 0, 0, 0};
2082 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2084 [pgac_cv__get_cpuid="yes"],
2085 [pgac_cv__get_cpuid="no"])])
2086 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2087 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2090 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2091 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2092 [[unsigned int exx[4] = {0, 0, 0, 0};
2093 __get_cpuid(exx[0], 1);
2095 [pgac_cv__cpuid="yes"],
2096 [pgac_cv__cpuid="no"])])
2097 if test x"$pgac_cv__cpuid" = x"yes"; then
2098 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2101 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2103 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2104 # with the default compiler flags. If not, check if adding the -msse4.2
2105 # flag helps. CFLAGS_CRC is set to -msse4.2 if that's required.
2106 PGAC_SSE42_CRC32_INTRINSICS([])
2107 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2108 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2111 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2112 # define __SSE4_2__ in that case.
2113 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2115 #error __SSE4_2__ not defined
2117 ])], [SSE4_2_TARGETED=1])
2119 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2121 # First check if __crc32c* intrinsics can be used with the default compiler
2122 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2123 # CFLAGS_CRC is set if the extra flag is required.
2124 PGAC_ARMV8_CRC32C_INTRINSICS([])
2125 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2126 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2129 AC_SUBST(CFLAGS_CRC)
2131 # Select CRC-32C implementation.
2133 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2134 # use the special CRC instructions for calculating CRC-32C. If we're not
2135 # targeting such a processor, but we can nevertheless produce code that uses
2136 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2137 # implementations and select which one to use at runtime, depending on whether
2138 # SSE 4.2 is supported by the processor we're running on.
2140 # Similarly, if we are targeting an ARM processor that has the CRC
2141 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2142 # we're not targeting such a processor, but can nevertheless produce code that
2143 # uses the CRC instructions, compile both, and select at runtime.
2145 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2146 # in the template or configure command line.
2147 if test x"$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
2148 # Use Intel SSE 4.2 if available.
2149 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2152 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2153 # the runtime check.
2154 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2155 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2157 # Use ARM CRC Extension if available.
2158 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_CRC" = x""; then
2161 # ARM CRC Extension, with runtime check?
2162 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2163 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2165 # fall back to slicing-by-8 algorithm, which doesn't require any
2166 # special CPU support.
2167 USE_SLICING_BY_8_CRC32C=1
2174 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2175 AC_MSG_CHECKING([which CRC-32C implementation to use])
2176 if test x"$USE_SSE42_CRC32C" = x"1"; then
2177 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2178 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2179 AC_MSG_RESULT(SSE 4.2)
2181 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2182 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2183 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2184 AC_MSG_RESULT(SSE 4.2 with runtime check)
2186 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2187 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2188 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2189 AC_MSG_RESULT(ARMv8 CRC instructions)
2191 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2192 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2193 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2194 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
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)
2203 AC_SUBST(PG_CRC32C_OBJS)
2206 # Select semaphore implementation type.
2207 if test "$PORTNAME" != "win32"; then
2208 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2209 # Need sem_open for this
2210 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2212 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2213 # Need sem_init for this
2214 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2216 AC_MSG_CHECKING([which semaphore API to use])
2217 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2218 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2219 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2220 sematype="named POSIX"
2222 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2223 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2224 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2225 sematype="unnamed POSIX"
2227 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2228 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2232 AC_MSG_RESULT([$sematype])
2234 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2235 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2239 # Select shared-memory implementation type.
2240 if test "$PORTNAME" != "win32"; then
2241 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2242 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2244 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2245 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2248 # Select random number source. If a TLS library is used then it will be the
2249 # first choice, else the native platform sources (Windows API or /dev/urandom)
2251 AC_MSG_CHECKING([which random number source to use])
2252 if test x"$with_ssl" = x"openssl" ; then
2253 AC_MSG_RESULT([OpenSSL])
2254 elif test x"$PORTNAME" = x"win32" ; then
2255 AC_MSG_RESULT([Windows native])
2256 elif test x"$cross_compiling" = x"yes"; then
2257 AC_MSG_RESULT([assuming /dev/urandom])
2259 AC_MSG_RESULT([/dev/urandom])
2260 AC_CHECK_FILE([/dev/urandom], [], [])
2262 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2264 no source of strong random numbers was found
2265 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2269 # If not set in template file, set bytes to use libc memset()
2270 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2271 MEMSET_LOOP_LIMIT=1024
2273 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2276 if test "$enable_nls" = yes ; then
2280 # Check for Tcl configuration script tclConfig.sh
2281 if test "$with_tcl" = yes; then
2282 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2283 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2284 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2285 if test "$TCL_SHARED_BUILD" != 1; then
2286 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2287 Use --without-tcl to disable building PL/Tcl.])
2289 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2290 ac_save_CPPFLAGS=$CPPFLAGS
2291 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2292 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2293 CPPFLAGS=$ac_save_CPPFLAGS
2296 # check for <perl.h>
2297 if test "$with_perl" = yes; then
2298 ac_save_CPPFLAGS=$CPPFLAGS
2299 CPPFLAGS="$CPPFLAGS $perl_includespec"
2300 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2301 [#include <EXTERN.h>])
2302 # While we're at it, check that we can link to libperl.
2303 # On most platforms, if perl.h is there then libperl.so will be too, but at
2304 # this writing Debian packages them separately. There is no known reason to
2305 # waste cycles on separate probes for the Tcl or Python libraries, though.
2306 # On some Red Hat platforms, the link attempt can fail if we don't use
2307 # CFLAGS_SL while building the test program.
2308 ac_save_CFLAGS=$CFLAGS
2309 CFLAGS="$CFLAGS $CFLAGS_SL"
2310 pgac_save_LIBS=$LIBS
2311 LIBS="$perl_embed_ldflags"
2312 AC_MSG_CHECKING([for libperl])
2313 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2316 ], [perl_alloc();])],
2317 [AC_MSG_RESULT(yes)],
2319 AC_MSG_ERROR([libperl library is required for Perl])])
2320 LIBS=$pgac_save_LIBS
2321 CFLAGS=$ac_save_CFLAGS
2322 CPPFLAGS=$ac_save_CPPFLAGS
2325 # check for <Python.h>
2326 if test "$with_python" = yes; then
2327 ac_save_CPPFLAGS=$CPPFLAGS
2328 CPPFLAGS="$python_includespec $CPPFLAGS"
2329 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2330 CPPFLAGS=$ac_save_CPPFLAGS
2334 # Check for documentation-building tools
2336 PGAC_PATH_PROGS(XMLLINT, xmllint)
2337 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2338 PGAC_PATH_PROGS(FOP, fop)
2339 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2342 # Check for test tools
2344 if test "$enable_tap_tests" = yes; then
2345 # Make sure we know where prove is.
2346 PGAC_PATH_PROGS(PROVE, prove)
2347 if test -z "$PROVE"; then
2348 AC_MSG_ERROR([prove not found])
2350 # Check for necessary Perl modules. You might think we should use
2351 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2352 # installation than perl, eg on MSys, so we have to check using prove.
2353 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2354 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2355 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2356 if test $? -eq 0; then
2357 # log the module version details, but don't show them interactively
2358 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2361 # on failure, though, show the results to the user
2362 AC_MSG_RESULT([$modulestderr])
2363 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2367 # If compiler will take -Wl,--as-needed (or various platform-specific
2368 # spellings thereof) then add that to LDFLAGS. This is much easier than
2369 # trying to filter LIBS to the minimum for each executable.
2370 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2371 # libreadline; therefore we postpone testing it until we know what library
2372 # dependencies readline has. The test code will try to link with $LIBS.
2373 if test "$with_readline" = yes; then
2374 link_test_func=readline
2379 if test "$PORTNAME" = "darwin"; then
2380 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2381 elif test "$PORTNAME" = "openbsd"; then
2382 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2384 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2387 # For linkers that understand --export-dynamic, add that to the LDFLAGS_EX_BE
2388 # (backend specific ldflags). One some platforms this will always fail (e.g.,
2389 # windows), but on others it depends on the choice of linker (e.g., solaris).
2390 PGAC_PROG_CC_LD_VARFLAGS_OPT(LDFLAGS_EX_BE, [-Wl,--export-dynamic], $link_test_func)
2391 AC_SUBST(LDFLAGS_EX_BE)
2393 # Create compiler version string
2394 if test x"$GCC" = x"yes" ; then
2395 cc_string=`${CC} --version | sed q`
2396 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2397 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2398 cc_string=`${CC} -V 2>&1 | sed q`
2403 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2404 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2405 [A string containing the version number, platform, and C compiler])
2407 # Supply a numeric version string for use by 3rd party add-ons
2408 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2409 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2410 $AWK '{printf "%d%04d", $1, $2}'`"]
2411 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2412 AC_SUBST(PG_VERSION_NUM)
2414 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2415 # literally, so that it's possible to override it at build time using
2416 # a command like "make ... PG_SYSROOT=path". This has to be done after
2417 # we've finished all configure checks that depend on CPPFLAGS.
2418 # The same for LDFLAGS, too.
2419 if test x"$PG_SYSROOT" != x; then
2420 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2421 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2423 AC_SUBST(PG_SYSROOT)
2426 # Begin output steps
2428 AC_MSG_NOTICE([using compiler=$cc_string])
2429 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2430 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2431 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2432 # Currently only used when LLVM is used
2433 if test "$with_llvm" = yes ; then
2434 AC_MSG_NOTICE([using CXX=$CXX])
2435 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2436 AC_MSG_NOTICE([using CLANG=$CLANG])
2437 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2438 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2441 # prepare build tree if outside source tree
2442 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2443 # Note 2: /bin/pwd might be better than shell's built-in at getting
2444 # a symlink-free name.
2445 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2449 if test "$no_create" != yes; then
2450 _AS_ECHO_N([preparing build tree... ])
2451 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2452 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2453 || AC_MSG_ERROR(failed)
2457 AC_SUBST(vpath_build)
2460 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2463 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2464 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2465 src/include/pg_config_os.h:src/include/port/${template}.h
2466 src/Makefile.port:src/makefiles/Makefile.${template}
2469 if test "$PORTNAME" = "win32"; then
2470 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2471 # Links sometimes fail undetected on Mingw -
2472 # so here we detect it and warn the user
2473 for FILE in $CONFIG_LINKS
2475 # test -e works for symlinks in the MinGW console
2476 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2481 AC_CONFIG_HEADERS([src/include/pg_config.h],
2483 # Update timestamp for pg_config.h (see Makefile.global)
2484 echo >src/include/stamp-h
2487 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2489 # Update timestamp for pg_config_ext.h (see Makefile.global)
2490 echo >src/include/stamp-ext-h
2493 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2494 [echo >src/interfaces/ecpg/include/stamp-h])
2498 # Ensure that any meson build directories would reconfigure and see that
2499 # there's a conflicting in-tree build and can error out.
2500 if test "$vpath_build"="no"; then