1 dnl Process this file with autoconf to produce a configure script.
4 dnl Developers, please strive to achieve this order:
6 dnl 0. Initialization and options processing
12 dnl 6. Compiler characteristics
13 dnl 7. Functions, global variables
14 dnl 8. System services
16 dnl Read the Autoconf manual for details.
18 m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
20 AC_INIT([PostgreSQL], [16devel], [pgsql-bugs@lists.postgresql.org], [], [https://www.postgresql.org/])
22 m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
23 Untested combinations of 'autoconf' and PostgreSQL versions are not
24 recommended. You can remove the check from 'configure.ac' but it is then
25 your responsibility whether the result works or not.])])
26 AC_COPYRIGHT([Copyright (c) 1996-2022, PostgreSQL Global Development Group])
27 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
28 AC_CONFIG_AUX_DIR(config)
29 AC_PREFIX_DEFAULT(/usr/local/pgsql)
30 AC_DEFINE_UNQUOTED(CONFIGURE_ARGS, ["$ac_configure_args"], [Saved arguments from configure])
32 [PG_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\)'`]
33 [PG_MINORVERSION=`expr "$PACKAGE_VERSION" : '.*\.\([0-9][0-9]*\)'`]
34 test -n "$PG_MINORVERSION" || PG_MINORVERSION=0
35 AC_SUBST(PG_MAJORVERSION)
36 AC_DEFINE_UNQUOTED(PG_MAJORVERSION, "$PG_MAJORVERSION", [PostgreSQL major version as a string])
37 AC_DEFINE_UNQUOTED(PG_MAJORVERSION_NUM, $PG_MAJORVERSION, [PostgreSQL major version number])
38 AC_DEFINE_UNQUOTED(PG_MINORVERSION_NUM, $PG_MINORVERSION, [PostgreSQL minor version number])
40 PGAC_ARG_REQ(with, extra-version, [STRING], [append STRING to version],
41 [PG_VERSION="$PACKAGE_VERSION$withval"],
42 [PG_VERSION="$PACKAGE_VERSION"])
43 AC_DEFINE_UNQUOTED(PG_VERSION, "$PG_VERSION", [PostgreSQL version as a string])
48 AC_MSG_CHECKING([which template to use])
50 PGAC_ARG_REQ(with, template, [NAME], [override operating system template],
53 list) echo; ls "$srcdir/src/template"; exit;;
54 *) if test -f "$srcdir/src/template/$with_template" ; then
57 AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])
62 # --with-template not given
66 cygwin*|msys*) template=cygwin ;;
67 darwin*) template=darwin ;;
68 dragonfly*) template=netbsd ;;
69 freebsd*) template=freebsd ;;
70 linux*|gnu*|k*bsd*-gnu)
72 mingw*) template=win32 ;;
73 netbsd*) template=netbsd ;;
74 openbsd*) template=openbsd ;;
75 solaris*) template=solaris ;;
78 if test x"$template" = x"" ; then
80 *******************************************************************
81 PostgreSQL has apparently not been ported to your platform yet.
82 To try a manual configuration, look into the src/template directory
83 for a similar platform and use the '--with-template=' option.
85 Please also contact <]AC_PACKAGE_BUGREPORT[> to see about
86 rectifying this. Include the above 'checking host system type...'
88 *******************************************************************
94 AC_MSG_RESULT([$template])
99 # Initialize default assumption that we do not need separate assembly code
100 # for TAS (test-and-set). This can be overridden by the template file
101 # when it's executed.
105 # Default, works for most platforms, override in template file if needed
111 ## Command line options
115 # Add non-standard directories to the include path
117 PGAC_ARG_REQ(with, includes, [DIRS], [look for additional header files in DIRS])
121 # Add non-standard directories to the library search path
123 PGAC_ARG_REQ(with, libraries, [DIRS], [look for additional libraries in DIRS],
124 [LIBRARY_DIRS=$withval])
126 PGAC_ARG_REQ(with, libs, [DIRS], [alternative spelling of --with-libraries],
127 [LIBRARY_DIRS=$withval])
131 # 64-bit integer date/time storage is now the only option, but to avoid
132 # unnecessary breakage of build scripts, continue to accept an explicit
133 # "--enable-integer-datetimes" switch.
135 PGAC_ARG_BOOL(enable, integer-datetimes, yes, [obsolete option, no longer supported],
137 [AC_MSG_ERROR([--disable-integer-datetimes is no longer supported])])
143 AC_MSG_CHECKING([whether NLS is wanted])
144 PGAC_ARG_OPTARG(enable, nls,
145 [LANGUAGES], [enable Native Language Support],
147 [WANTED_LANGUAGES=$enableval],
148 [AC_DEFINE(ENABLE_NLS, 1,
149 [Define to 1 if you want National Language Support. (--enable-nls)])])
150 AC_MSG_RESULT([$enable_nls])
152 AC_SUBST(WANTED_LANGUAGES)
155 # Default port number (--with-pgport), default 5432
157 AC_MSG_CHECKING([for default port number])
158 PGAC_ARG_REQ(with, pgport, [PORTNUM], [set default port number [5432]],
159 [default_port=$withval],
161 AC_MSG_RESULT([$default_port])
162 # Need both of these because some places want an integer and some a string
163 AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},
164 [Define to the default TCP port number on which the server listens and
165 to which clients will try to connect. This can be overridden at run-time,
166 but it's convenient if your clients have the right default compiled in.
167 (--with-pgport=PORTNUM)])
168 AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",
169 [Define to the default TCP port number as a string constant.])
170 AC_SUBST(default_port)
172 # It's worth validating port; you can get very confusing errors otherwise
173 if test x"$default_port" = x""; then
174 AC_MSG_ERROR([invalid --with-pgport specification: empty string])
175 elif test ! x`echo "$default_port" | sed -e 's/[[0-9]]*//'` = x""; then
176 AC_MSG_ERROR([invalid --with-pgport specification: must be a number])
177 elif test ! x`echo "$default_port" | sed -e 's/^0.//'` = x"$default_port"; then
178 AC_MSG_ERROR([invalid --with-pgport specification: must not have leading 0])
179 elif test "$default_port" -lt "1" -o "$default_port" -gt "65535"; then
180 AC_MSG_ERROR([invalid --with-pgport specification: must be between 1 and 65535])
184 # '-rpath'-like feature can be disabled
186 PGAC_ARG_BOOL(enable, rpath, yes,
187 [do not embed shared library search path in executables])
188 AC_SUBST(enable_rpath)
193 PGAC_ARG_BOOL(enable, spinlocks, yes,
194 [do not use spinlocks])
199 PGAC_ARG_BOOL(enable, atomics, yes,
200 [do not use atomic operations])
203 # --enable-debug adds -g to compiler flags
205 PGAC_ARG_BOOL(enable, debug, no,
206 [build with debugging symbols (-g)])
207 AC_SUBST(enable_debug)
210 # --enable-profiling enables gcc profiling
212 PGAC_ARG_BOOL(enable, profiling, no,
213 [build with profiling enabled ])
216 # --enable-coverage enables generation of code coverage metrics with gcov
218 PGAC_ARG_BOOL(enable, coverage, no,
219 [build with coverage testing instrumentation],
220 [PGAC_PATH_PROGS(GCOV, gcov)
221 if test -z "$GCOV"; then
222 AC_MSG_ERROR([gcov not found])
224 PGAC_PATH_PROGS(LCOV, lcov)
225 if test -z "$LCOV"; then
226 AC_MSG_ERROR([lcov not found])
228 PGAC_PATH_PROGS(GENHTML, genhtml)
229 if test -z "$GENHTML"; then
230 AC_MSG_ERROR([genhtml not found])
232 AC_SUBST(enable_coverage)
237 PGAC_ARG_BOOL(enable, dtrace, no,
238 [build with DTrace support],
239 [PGAC_PATH_PROGS(DTRACE, dtrace)
240 if test -z "$DTRACE"; then
241 AC_MSG_ERROR([dtrace not found])
243 AC_SUBST(DTRACEFLAGS)])
244 AC_SUBST(enable_dtrace)
249 PGAC_ARG_BOOL(enable, tap-tests, no,
250 [enable TAP tests (requires Perl and IPC::Run)])
251 AC_SUBST(enable_tap_tests)
256 AC_MSG_CHECKING([for block size])
257 PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],
258 [blocksize=$withval],
267 *) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])
269 AC_MSG_RESULT([${blocksize}kB])
271 AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [
272 Size of a disk block --- this also limits the size of a tuple. You
273 can set it bigger if you need bigger tuples (although TOAST should
274 reduce the need to have large tuples, since fields can be spread
275 across multiple tuples).
277 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
278 is currently 2^15 (32768). This is determined by the 15-bit widths
279 of the lp_off and lp_len fields in ItemIdData (see
280 include/storage/itemid.h).
282 Changing BLCKSZ requires an initdb.
286 # Relation segment size
288 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
291 PGAC_ARG_REQ(with, segsize-blocks, [SEGSIZE_BLOCKS], [set table segment size in blocks [0]],
292 [segsize_blocks=$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 elif test "$ICC" = yes; then
577 # Intel's compiler has a bug/misoptimization in checking for
578 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
579 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
580 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
581 # Make sure strict aliasing is off (though this is said to be the default)
582 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
583 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
584 elif test "$PORTNAME" = "aix"; then
585 # AIX's xlc has to have strict aliasing turned off too
586 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
587 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
588 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
589 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
592 # If the compiler knows how to hide symbols, add the switch needed for that to
593 # CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE.
595 # This is done separately from the above because -fvisibility is supported by
596 # quite a few different compilers, making the required repetition bothersome.
598 # We might need to add a separate test to check if
599 # __attribute__((visibility("hidden"))) is supported, if we encounter a
600 # compiler that supports one of the supported variants of -fvisibility=hidden
601 # but uses a different syntax to mark a symbol as exported.
602 if test "$GCC" = yes -o "$SUN_STUDIO_CC" = yes ; then
603 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden])
604 # For C++ we additionally want -fvisibility-inlines-hidden
605 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden])
606 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden])
607 have_visibility_attribute=$pgac_cv_prog_CC_cflags__fvisibility_hidden
608 elif test "$PORTNAME" = "aix"; then
609 # Note that xlc accepts -fvisibility=hidden as a file.
610 PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-qvisibility=hidden])
611 PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-qvisibility=hidden])
612 have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
613 # Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
614 # all extension module symbols to be exported.
615 if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
616 CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
620 if test "$have_visibility_attribute" = "yes"; then
621 AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1,
622 [Define to 1 if your compiler knows the visibility("hidden") attribute.])
625 AC_SUBST(CFLAGS_UNROLL_LOOPS)
626 AC_SUBST(CFLAGS_VECTORIZE)
627 AC_SUBST(CFLAGS_SL_MODULE)
628 AC_SUBST(CXXFLAGS_SL_MODULE)
630 # Determine flags used to emit bitcode for JIT inlining.
631 # 1. We must duplicate any behaviour-changing compiler flags used above,
632 # to keep compatibility with the compiler used for normal Postgres code.
633 # 2. We don't bother to duplicate extra-warnings switches --- seeing a
634 # warning in the main build is enough.
635 # 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.
636 if test "$with_llvm" = yes ; then
637 CLANGXX="$CLANG -xc++"
639 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
640 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
641 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
642 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
643 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
644 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
646 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])
647 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])
650 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])
651 if test -n "$NOT_THE_CFLAGS"; then
652 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"
655 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])
656 if test -n "$NOT_THE_CFLAGS"; then
657 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"
660 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])
661 if test -n "$NOT_THE_CFLAGS"; then
662 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"
665 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])
666 if test -n "$NOT_THE_CFLAGS"; then
667 BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"
671 # supply -g if --enable-debug
672 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
676 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
677 CXXFLAGS="$CXXFLAGS -g"
680 # enable code coverage if --enable-coverage
681 if test "$enable_coverage" = yes; then
682 if test "$GCC" = yes; then
683 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
684 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
686 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
690 # enable profiling if --enable-profiling
691 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
692 if test "$GCC" = yes; then
693 AC_DEFINE([PROFILE_PID_DIR], 1,
694 [Define to 1 to allow profiling output to be saved separately for each process.])
695 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
696 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
698 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
702 # On Solaris, we need this #define to get POSIX-conforming versions
703 # of many interfaces (sigwait, getpwuid_r, ...).
704 if test "$PORTNAME" = "solaris"; then
705 CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
708 # We already have this in Makefile.win32, but configure needs it too
709 if test "$PORTNAME" = "win32"; then
710 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"
713 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
714 # user-specified flags (if any) at the end. This lets users override
715 # the automatic additions.
716 CFLAGS="$CFLAGS $user_CFLAGS"
717 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
718 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
719 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
721 AC_SUBST(BITCODE_CFLAGS)
722 AC_SUBST(BITCODE_CXXFLAGS)
724 # The template file must set up CFLAGS_SL; we don't support user override
727 # Check if the compiler still works with the final flag settings
728 # (note, we're not checking that for CXX, which is optional)
729 AC_MSG_CHECKING([whether the C compiler still works])
730 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
731 [AC_MSG_RESULT(yes)],
733 AC_MSG_ERROR([cannot proceed])])
735 # Defend against gcc -ffast-math
736 if test "$GCC" = yes; then
737 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
739 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
742 # Defend against clang being used on x86-32 without SSE2 enabled. As current
743 # versions of clang do not understand -fexcess-precision=standard, the use of
744 # x87 floating point operations leads to problems like isinf possibly returning
745 # false for a value that is infinite when converted from the 80bit register to
746 # the 8byte memory representation.
748 # Only perform the test if the compiler doesn't understand
749 # -fexcess-precision=standard, that way a potentially fixed compiler will work
751 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
752 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
753 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
757 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
765 # Set up TAS assembly code if needed; the template file has now had its
766 # chance to request this.
768 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
770 if test "$need_tas" = yes ; then
777 AC_SUBST(DLSUFFIX)dnl
778 AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],
779 [Define to the file name extension of dynamically-loadable modules.])
782 # Set up pkg_config in case we need it below
787 # Automatic dependency tracking
789 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
795 # Enable assert checks
797 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
798 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
799 [Define to 1 to build with assertion checks. (--enable-cassert)])])
803 # Include directories
806 IFS="${IFS}${PATH_SEPARATOR}"
807 # SRCH_INC comes from the template file
808 for dir in $with_includes $SRCH_INC; do
809 if test -d "$dir"; then
810 INCLUDES="$INCLUDES -I$dir"
812 AC_MSG_WARN([*** Include directory $dir does not exist.])
820 # Library directories
823 IFS="${IFS}${PATH_SEPARATOR}"
824 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
825 for dir in $LIBRARY_DIRS $SRCH_LIB; do
826 if test -d "$dir"; then
827 LIBDIRS="$LIBDIRS -L$dir"
829 AC_MSG_WARN([*** Library directory $dir does not exist.])
835 # Enable thread-safe client libraries
837 AC_MSG_CHECKING([allow thread-safe client libraries])
838 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
839 if test "$enable_thread_safety" = yes; then
840 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
841 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
843 AC_MSG_RESULT([$enable_thread_safety])
844 AC_SUBST(enable_thread_safety)
849 AC_MSG_CHECKING([whether to build with ICU support])
850 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
851 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
852 AC_MSG_RESULT([$with_icu])
855 if test "$with_icu" = yes; then
856 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
860 # Optionally build Tcl modules (PL/Tcl)
862 AC_MSG_CHECKING([whether to build with Tcl])
863 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
864 AC_MSG_RESULT([$with_tcl])
867 # We see if the path to the Tcl/Tk configuration scripts is specified.
868 # This will override the use of tclsh to find the paths to search.
870 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
873 # Optionally build Perl modules (PL/Perl)
875 AC_MSG_CHECKING([whether to build Perl modules])
876 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
877 AC_MSG_RESULT([$with_perl])
881 # Optionally build Python modules (PL/Python)
883 AC_MSG_CHECKING([whether to build Python modules])
884 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
885 AC_MSG_RESULT([$with_python])
886 AC_SUBST(with_python)
891 AC_MSG_CHECKING([whether to build with GSSAPI support])
892 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
894 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
895 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
897 AC_MSG_RESULT([$with_gssapi])
898 AC_SUBST(with_gssapi)
905 # Kerberos configuration parameters
907 PGAC_ARG_REQ(with, krb-srvnam,
908 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
910 [with_krb_srvnam="postgres"])
911 AC_SUBST(with_krb_srvnam)
912 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
913 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
919 AC_MSG_CHECKING([whether to build with PAM support])
920 PGAC_ARG_BOOL(with, pam, no,
921 [build with PAM support],
922 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
923 AC_MSG_RESULT([$with_pam])
929 AC_MSG_CHECKING([whether to build with BSD Authentication support])
930 PGAC_ARG_BOOL(with, bsd-auth, no,
931 [build with BSD Authentication support],
932 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
933 AC_MSG_RESULT([$with_bsd_auth])
939 AC_MSG_CHECKING([whether to build with LDAP support])
940 PGAC_ARG_BOOL(with, ldap, no,
941 [build with LDAP support],
942 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
943 AC_MSG_RESULT([$with_ldap])
950 AC_MSG_CHECKING([whether to build with Bonjour support])
951 PGAC_ARG_BOOL(with, bonjour, no,
952 [build with Bonjour support],
953 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
954 AC_MSG_RESULT([$with_bonjour])
960 AC_MSG_CHECKING([whether to build with SELinux support])
961 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
962 AC_SUBST(with_selinux)
963 AC_MSG_RESULT([$with_selinux])
968 AC_MSG_CHECKING([whether to build with systemd support])
969 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
970 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
971 AC_SUBST(with_systemd)
972 AC_MSG_RESULT([$with_systemd])
977 PGAC_ARG_BOOL(with, readline, yes,
978 [do not use GNU Readline nor BSD Libedit for editing])
979 # readline on MinGW has problems with backslashes in psql and other bugs.
980 # This is particularly a problem with non-US code pages.
981 # Therefore disable its use until we understand the cause. 2004-07-20
982 if test "$PORTNAME" = "win32"; then
983 if test "$with_readline" = yes; then
984 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
988 AC_SUBST(with_readline)
994 PGAC_ARG_BOOL(with, libedit-preferred, no,
995 [prefer BSD Libedit over GNU Readline])
1001 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
1002 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
1003 # UUID library. More than one of these might be present on a given platform,
1004 # so we make the user say which one she wants.
1006 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
1007 if test x"$with_uuid" = x"" ; then
1010 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
1011 if test "$with_ossp_uuid" = yes ; then
1015 if test "$with_uuid" != no ; then
1016 if test "$with_uuid" = bsd ; then
1017 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
1018 elif test "$with_uuid" = e2fs ; then
1019 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
1020 elif test "$with_uuid" = ossp ; then
1021 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
1023 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
1032 AC_MSG_CHECKING([whether to build with XML support])
1033 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
1034 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
1035 AC_MSG_RESULT([$with_libxml])
1036 AC_SUBST(with_libxml)
1038 if test "$with_libxml" = yes ; then
1039 # Check pkg-config, then xml2-config. But for backwards compatibility,
1040 # setting XML2_CONFIG overrides pkg-config.
1041 AC_ARG_VAR(XML2_CONFIG, [path to xml2-config utility])dnl
1042 have_libxml2_pkg_config=no
1043 if test -z "$XML2_CONFIG" -a -n "$PKG_CONFIG"; then
1044 PKG_CHECK_MODULES(XML2, [libxml-2.0 >= 2.6.23],
1045 [have_libxml2_pkg_config=yes], [# do nothing])
1047 if test "$have_libxml2_pkg_config" = no ; then
1048 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
1049 if test -n "$XML2_CONFIG"; then
1050 XML2_CFLAGS=`$XML2_CONFIG --cflags`
1051 XML2_LIBS=`$XML2_CONFIG --libs`
1054 # Note the user could also set XML2_CFLAGS/XML2_LIBS directly
1055 for pgac_option in $XML2_CFLAGS; do
1056 case $pgac_option in
1057 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1060 for pgac_option in $XML2_LIBS; do
1061 case $pgac_option in
1062 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1071 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
1072 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
1075 AC_SUBST(with_libxslt)
1080 PGAC_ARG_REQ(with, system-tzdata,
1081 [DIR], [use system time zone data in DIR])
1082 AC_SUBST(with_system_tzdata)
1087 PGAC_ARG_BOOL(with, zlib, yes,
1094 AC_MSG_CHECKING([whether to build with LZ4 support])
1095 PGAC_ARG_BOOL(with, lz4, no, [build with LZ4 support],
1096 [AC_DEFINE([USE_LZ4], 1, [Define to 1 to build with LZ4 support. (--with-lz4)])])
1097 AC_MSG_RESULT([$with_lz4])
1100 if test "$with_lz4" = yes; then
1101 PKG_CHECK_MODULES(LZ4, liblz4)
1102 # We only care about -I, -D, and -L switches;
1103 # note that -llz4 will be added by AC_CHECK_LIB below.
1104 for pgac_option in $LZ4_CFLAGS; do
1105 case $pgac_option in
1106 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1109 for pgac_option in $LZ4_LIBS; do
1110 case $pgac_option in
1111 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1119 AC_MSG_CHECKING([whether to build with ZSTD support])
1120 PGAC_ARG_BOOL(with, zstd, no, [build with ZSTD support],
1121 [AC_DEFINE([USE_ZSTD], 1, [Define to 1 to build with ZSTD support. (--with-zstd)])])
1122 AC_MSG_RESULT([$with_zstd])
1125 if test "$with_zstd" = yes; then
1126 PKG_CHECK_MODULES(ZSTD, libzstd >= 1.4.0)
1127 # We only care about -I, -D, and -L switches;
1128 # note that -lzstd will be added by AC_CHECK_LIB below.
1129 for pgac_option in $ZSTD_CFLAGS; do
1130 case $pgac_option in
1131 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
1134 for pgac_option in $ZSTD_LIBS; do
1135 case $pgac_option in
1136 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
1144 CPPFLAGS="$CPPFLAGS $INCLUDES"
1145 LDFLAGS="$LDFLAGS $LIBDIRS"
1147 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
1148 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1151 AC_CHECK_TOOL(AR, ar, ar)
1152 if test "$PORTNAME" = "win32"; then
1153 AC_CHECK_TOOL(WINDRES, windres, windres)
1157 # When Autoconf chooses install-sh as install program it tries to generate
1158 # a relative path to it in each makefile where it substitutes it. This clashes
1159 # with our Makefile.global concept. This workaround helps.
1161 *install-sh*) install_bin='';;
1162 *) install_bin=$INSTALL;;
1164 AC_SUBST(install_bin)
1166 PGAC_PATH_PROGS(TAR, tar)
1169 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1170 # a relative path to it in each makefile where it substitutes it. This clashes
1171 # with our Makefile.global concept. This workaround helps.
1173 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1180 if test "$with_perl" = yes; then
1181 if test -z "$PERL"; then
1182 AC_MSG_ERROR([Perl not found])
1184 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1185 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1186 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1187 You might have to rebuild your Perl installation. Refer to the
1188 documentation for details. Use --without-perl to disable building
1191 # On most platforms, archlibexp is also where the Perl include files live ...
1192 perl_includespec="-I$perl_archlibexp/CORE"
1193 # ... but on newer macOS versions, we must use -iwithsysroot to look
1195 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1196 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1197 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1200 AC_SUBST(perl_includespec)dnl
1201 PGAC_CHECK_PERL_EMBED_CCFLAGS
1202 PGAC_CHECK_PERL_EMBED_LDFLAGS
1205 if test "$with_python" = yes; then
1207 PGAC_CHECK_PYTHON_EMBED_SETUP
1210 if test x"$cross_compiling" = x"yes" && test -z "$with_system_tzdata"; then
1211 PGAC_PATH_PROGS(ZIC, zic)
1212 if test -z "$ZIC"; then
1214 When cross-compiling, either use the option --with-system-tzdata to use
1215 existing time-zone data, or set the environment variable ZIC to a zic
1216 program to use during the build.])
1223 # For each platform, we need to know about any special compile and link
1224 # libraries, and whether the normal C function names are thread-safe.
1225 # See the comment at the top of src/port/thread.c for more information.
1226 # WIN32 doesn't need the pthread tests; it always uses threads
1228 # These tests are run before the library-tests, because linking with the
1229 # other libraries can pull in the pthread functions as a side-effect. We
1230 # want to use the -pthread or similar flags directly, and not rely on
1231 # the side-effects of linking with some other library.
1233 dnl note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1234 dnl invocation below is the first one in the script, and autoconf generates
1235 dnl additional code for that, which must not be inside the if-block. AS_IF
1236 dnl knows how to do that.
1237 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1239 AX_PTHREAD # set thread flags
1241 # Some platforms use these, so just define them. They can't hurt if they
1242 # are not supported.
1243 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE"
1245 # Check for *_r functions
1248 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1249 LIBS="$LIBS $PTHREAD_LIBS"
1251 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1252 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1254 AC_CHECK_FUNCS([strerror_r])
1256 # Do test here with the proper thread flags
1257 PGAC_FUNC_STRERROR_R_INT
1263 # do not use values from template file
1268 AC_SUBST(PTHREAD_CFLAGS)
1269 AC_SUBST(PTHREAD_LIBS)
1275 ## Most libraries are included only if they demonstrably provide a function
1276 ## we need, but libm is an exception: always include it, because there are
1277 ## too many compilers that play cute optimization games that will break
1278 ## probes for standard functions such as pow().
1281 AC_CHECK_LIB(m, main)
1282 AC_SEARCH_LIBS(setproctitle, util)
1283 # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
1284 # when enabling asan the dlopen check doesn't notice that -ldl is actually
1285 # required. Just checking for dlsym() ought to suffice.
1286 AC_SEARCH_LIBS(dlsym, dl)
1287 AC_SEARCH_LIBS(socket, [socket ws2_32])
1288 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1289 AC_SEARCH_LIBS(shm_open, rt)
1290 AC_SEARCH_LIBS(shm_unlink, rt)
1291 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1293 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1295 AC_SEARCH_LIBS(shmget, cygipc)
1297 AC_SEARCH_LIBS(backtrace_symbols, execinfo)
1299 if test "$enable_thread_safety" = yes; then
1300 AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
1303 if test "$with_readline" = yes; then
1305 if test x"$pgac_cv_check_readline" = x"no"; then
1306 AC_MSG_ERROR([readline library not found
1307 If you have readline already installed, see config.log for details on the
1308 failure. It is possible the compiler isn't looking in the proper directory.
1309 Use --without-readline to disable readline support.])
1313 if test "$with_zlib" = yes; then
1314 AC_CHECK_LIB(z, inflate, [],
1315 [AC_MSG_ERROR([zlib library not found
1316 If you have zlib already installed, see config.log for details on the
1317 failure. It is possible the compiler isn't looking in the proper directory.
1318 Use --without-zlib to disable zlib support.])])
1321 if test "$enable_spinlocks" = yes; then
1322 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1325 *** Not using spinlocks will cause poor performance.])
1328 if test "$enable_atomics" = yes; then
1329 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1332 *** Not using atomic operations will cause poor performance.])
1335 if test "$with_gssapi" = yes ; then
1336 if test "$PORTNAME" != "win32"; then
1337 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1338 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1340 LIBS="$LIBS -lgssapi32"
1347 # There is currently only one supported SSL/TLS library: OpenSSL.
1349 PGAC_ARG_REQ(with, ssl, [LIB], [use LIB for SSL/TLS support (openssl)])
1350 if test x"$with_ssl" = x"" ; then
1353 PGAC_ARG_BOOL(with, openssl, no, [obsolete spelling of --with-ssl=openssl])
1354 if test "$with_openssl" = yes ; then
1358 if test "$with_ssl" = openssl ; then
1360 # Minimum required OpenSSL version is 1.0.1
1361 AC_DEFINE(OPENSSL_API_COMPAT, [0x10001000L],
1362 [Define to the OpenSSL API version in use. This avoids deprecation warnings from newer OpenSSL versions.])
1363 if test "$PORTNAME" != "win32"; then
1364 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1365 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1367 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1368 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1370 # Function introduced in OpenSSL 1.0.2.
1371 AC_CHECK_FUNCS([X509_get_signature_nid])
1372 # Functions introduced in OpenSSL 1.1.0. We used to check for
1373 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1374 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1375 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1377 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data HMAC_CTX_new HMAC_CTX_free])
1378 # OpenSSL versions before 1.1.0 required setting callback functions, for
1379 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1380 # function was removed.
1381 AC_CHECK_FUNCS([CRYPTO_lock])
1382 AC_DEFINE([USE_OPENSSL], 1, [Define to 1 to build with OpenSSL support. (--with-ssl=openssl)])
1383 elif test "$with_ssl" != no ; then
1384 AC_MSG_ERROR([--with-ssl must specify openssl])
1388 if test "$with_pam" = yes ; then
1389 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1392 if test "$with_libxml" = yes ; then
1393 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1396 if test "$with_libxslt" = yes ; then
1397 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1400 if test "$with_lz4" = yes ; then
1401 AC_CHECK_LIB(lz4, LZ4_compress_default, [], [AC_MSG_ERROR([library 'lz4' is required for LZ4 support])])
1404 if test "$with_zstd" = yes ; then
1405 AC_CHECK_LIB(zstd, ZSTD_compress, [], [AC_MSG_ERROR([library 'zstd' is required for ZSTD support])])
1408 # Note: We can test for libldap_r only after we know PTHREAD_LIBS;
1409 # also, on AIX, we may need to have openssl in LIBS for this step.
1410 if test "$with_ldap" = yes ; then
1412 if test "$PORTNAME" != "win32"; then
1413 AC_CHECK_LIB(ldap, ldap_bind, [],
1414 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1416 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1417 # This test is carried out against libldap.
1418 AC_CHECK_FUNCS([ldap_initialize])
1419 # The separate ldap_r library only exists in OpenLDAP < 2.5, and if we
1420 # have 2.5 or later, we shouldn't even probe for ldap_r (we might find a
1421 # library from a separate OpenLDAP installation). The most reliable
1422 # way to check that is to check for a function introduced in 2.5.
1423 AC_CHECK_FUNC([ldap_verify_credentials],
1424 [thread_safe_libldap=yes],
1425 [thread_safe_libldap=no])
1426 if test "$enable_thread_safety" = yes -a "$thread_safe_libldap" = no; then
1427 # Use ldap_r for FE if available, else assume ldap is thread-safe.
1428 # On some platforms ldap_r fails to link without PTHREAD_LIBS.
1430 AC_CHECK_LIB(ldap_r, ldap_bind,
1431 [LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"],
1432 [LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"],
1433 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1435 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1438 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1439 LDAP_LIBS_FE="-lwldap32"
1440 LDAP_LIBS_BE="-lwldap32"
1444 AC_SUBST(LDAP_LIBS_FE)
1445 AC_SUBST(LDAP_LIBS_BE)
1447 # for contrib/sepgsql
1448 if test "$with_selinux" = yes; then
1449 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1450 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1453 # for contrib/uuid-ossp
1454 if test "$with_uuid" = bsd ; then
1455 # On BSD, the UUID functions are in libc
1456 AC_CHECK_FUNC(uuid_to_string,
1458 [AC_MSG_ERROR([BSD UUID functions are not present])])
1459 elif test "$with_uuid" = e2fs ; then
1460 # On macOS, the UUID functions are in libc
1461 AC_CHECK_FUNC(uuid_generate,
1463 [AC_CHECK_LIB(uuid, uuid_generate,
1464 [UUID_LIBS="-luuid"],
1465 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1466 elif test "$with_uuid" = ossp ; then
1467 AC_CHECK_LIB(ossp-uuid, uuid_export,
1468 [UUID_LIBS="-lossp-uuid"],
1469 [AC_CHECK_LIB(uuid, uuid_export,
1470 [UUID_LIBS="-luuid"],
1471 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1482 AC_CHECK_HEADERS(m4_normalize([
1501 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1502 AC_CHECK_HEADERS(readline/readline.h, [],
1503 [AC_CHECK_HEADERS(readline.h, [],
1504 [AC_MSG_ERROR([readline header not found
1505 If you have readline already installed, see config.log for details on the
1506 failure. It is possible the compiler isn't looking in the proper directory.
1507 Use --without-readline to disable readline support.])])])
1508 AC_CHECK_HEADERS(readline/history.h, [],
1509 [AC_CHECK_HEADERS(history.h, [],
1510 [AC_MSG_ERROR([history 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.])])])
1516 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1517 # Some installations of libedit usurp /usr/include/readline/, which seems
1518 # bad practice, since in combined installations readline will have its headers
1519 # there. We might have to resort to AC_EGREP checks to make sure we found
1520 # the proper header...
1521 AC_CHECK_HEADERS(editline/readline.h, [],
1522 [AC_CHECK_HEADERS(readline.h, [],
1523 [AC_CHECK_HEADERS(readline/readline.h, [],
1524 [AC_MSG_ERROR([readline header not found
1525 If you have libedit already installed, see config.log for details on the
1526 failure. It is possible the compiler isn't looking in the proper directory.
1527 Use --without-readline to disable libedit support.])])])])
1528 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1529 # not be there at all. Hence, don't complain if not found. We must check
1530 # though, since in yet other versions it is an independent header.
1531 AC_CHECK_HEADERS(editline/history.h, [],
1532 [AC_CHECK_HEADERS(history.h, [],
1533 [AC_CHECK_HEADERS(readline/history.h)])])
1536 if test "$with_zlib" = yes; then
1537 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1538 If you have zlib 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-zlib to disable zlib support.])])
1543 PGAC_PATH_PROGS(LZ4, lz4)
1544 if test "$with_lz4" = yes; then
1545 AC_CHECK_HEADER(lz4.h, [], [AC_MSG_ERROR([lz4.h header file is required for LZ4])])
1548 PGAC_PATH_PROGS(ZSTD, zstd)
1549 if test "$with_zstd" = yes; then
1550 AC_CHECK_HEADER(zstd.h, [], [AC_MSG_ERROR([zstd.h header file is required for ZSTD])])
1553 if test "$with_gssapi" = yes ; then
1554 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1555 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1558 PGAC_PATH_PROGS(OPENSSL, openssl)
1559 if test "$with_ssl" = openssl ; then
1560 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1561 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1564 if test "$with_pam" = yes ; then
1565 AC_CHECK_HEADERS(security/pam_appl.h, [],
1566 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1567 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1570 if test "$with_bsd_auth" = yes ; then
1571 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1574 if test "$with_systemd" = yes ; then
1575 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1578 if test "$with_libxml" = yes ; then
1579 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1582 if test "$with_libxslt" = yes ; then
1583 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1586 if test "$with_ldap" = yes ; then
1587 if test "$PORTNAME" != "win32"; then
1588 AC_CHECK_HEADER(ldap.h, [],
1589 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1592 AC_CHECK_HEADER(winldap.h, [],
1593 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1594 [AC_INCLUDES_DEFAULT
1595 #include <windows.h>
1600 if test "$with_bonjour" = yes ; then
1601 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1602 dnl At some point we might add something like
1603 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1604 dnl but right now, what that would mainly accomplish is to encourage
1605 dnl people to try to use the avahi implementation, which does not work.
1606 dnl If you want to use Apple's own Bonjour code on another platform,
1607 dnl just add -ldns_sd to LIBS manually.
1610 # for contrib/uuid-ossp
1611 if test "$with_uuid" = bsd ; then
1612 AC_CHECK_HEADERS(uuid.h,
1613 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1614 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1615 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1616 elif test "$with_uuid" = e2fs ; then
1617 AC_CHECK_HEADERS(uuid/uuid.h,
1618 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1619 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1620 [AC_CHECK_HEADERS(uuid.h,
1621 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1622 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1623 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1624 elif test "$with_uuid" = ossp ; then
1625 AC_CHECK_HEADERS(ossp/uuid.h,
1626 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1627 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1628 [AC_CHECK_HEADERS(uuid.h,
1629 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1630 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1631 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1634 if test "$PORTNAME" = "win32" ; then
1635 AC_CHECK_HEADERS(crtdefs.h)
1639 ## Types, structures, compiler characteristics
1642 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1645 PGAC_PRINTF_ARCHETYPE
1646 PGAC_C_STATIC_ASSERT
1648 PGAC_C_TYPES_COMPATIBLE
1649 PGAC_C_BUILTIN_CONSTANT_P
1650 PGAC_C_BUILTIN_UNREACHABLE
1651 PGAC_C_COMPUTED_GOTO
1652 PGAC_STRUCT_TIMEZONE
1654 AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
1655 PGAC_STRUCT_SOCKADDR_SA_LEN
1659 # MSVC doesn't cope well with defining restrict to __restrict, the
1660 # spelling it understands, because it conflicts with
1661 # __declspec(restrict). Therefore we define pg_restrict to the
1662 # appropriate definition, which presumably won't conflict.
1664 # Allow platforms with buggy compilers to force restrict to not be
1665 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1668 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1671 pg_restrict="$ac_cv_c_restrict"
1673 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1674 [Define to keyword to use for C99 restrict support, or to nothing if not
1677 AC_CHECK_TYPES([struct cmsgcred], [], [],
1678 [#include <sys/socket.h>
1679 #include <sys/param.h>
1680 #ifdef HAVE_SYS_UCRED_H
1681 #include <sys/ucred.h>
1684 AC_CHECK_TYPES([struct option], [], [],
1685 [#ifdef HAVE_GETOPT_H
1689 if test "$with_zlib" = yes; then
1690 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1691 # did not). While we could work around the lack of z_streamp, it
1692 # seems unwise to encourage people to use such old zlib versions...
1693 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1694 Use --without-zlib to disable zlib support.])],
1695 [#include <zlib.h>])
1700 # On x86_64, check if we can compile a popcntq instruction
1701 AC_CACHE_CHECK([whether assembler supports x86_64 popcntq],
1702 [pgac_cv_have_x86_64_popcntq],
1703 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1704 [long long x = 1; long long r;
1705 __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));])],
1706 [pgac_cv_have_x86_64_popcntq=yes],
1707 [pgac_cv_have_x86_64_popcntq=no])])
1708 if test x"$pgac_cv_have_x86_64_popcntq" = xyes ; then
1709 AC_DEFINE(HAVE_X86_64_POPCNTQ, 1, [Define to 1 if the assembler supports X86_64's POPCNTQ instruction.])
1713 # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
1714 AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
1715 [pgac_cv_have_i_constraint__builtin_constant_p],
1716 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1718 addi(int ra, int si)
1721 if (__builtin_constant_p(si))
1722 __asm__ __volatile__(
1723 " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
1726 int test_adds(int x) { return addi(3, x) + addi(x, 5); }], [])],
1727 [pgac_cv_have_i_constraint__builtin_constant_p=yes],
1728 [pgac_cv_have_i_constraint__builtin_constant_p=no])])
1729 if test x"$pgac_cv_have_i_constraint__builtin_constant_p" = xyes ; then
1730 AC_DEFINE(HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P, 1,
1731 [Define to 1 if __builtin_constant_p(x) implies "i"(x) acceptance.])
1736 # Check largefile support. You might think this is a system service not a
1737 # compiler characteristic, but you'd be wrong. We must check this before
1738 # probing existence of related functions such as fseeko, since the largefile
1739 # defines can affect what is generated for that.
1740 if test "$PORTNAME" != "win32"; then
1742 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1743 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1744 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1745 dnl versions where the feature actually works, it's on by default anyway.
1746 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1749 dnl Check for largefile support (must be after AC_SYS_LARGEFILE)
1750 AC_CHECK_SIZEOF([off_t])
1752 # If we don't have largefile support, can't handle segment size >= 2GB.
1753 if test "$ac_cv_sizeof_off_t" -lt 8; then
1754 if expr $RELSEG_SIZE '*' $blocksize '>=' 2 '*' 1024 '*' 1024; then
1755 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1759 AC_CHECK_SIZEOF([bool], [],
1760 [#ifdef HAVE_STDBOOL_H
1761 #include <stdbool.h>
1764 dnl We use <stdbool.h> if we have it and it declares type bool as having
1765 dnl size 1. Otherwise, c.h will fall back to declaring bool as unsigned char.
1766 if test "$ac_cv_header_stdbool_h" = yes -a "$ac_cv_sizeof_bool" = 1; then
1767 AC_DEFINE([PG_USE_STDBOOL], 1,
1768 [Define to 1 to use <stdbool.h> to define type bool.])
1773 ## Functions, global variables
1776 PGAC_VAR_INT_TIMEZONE
1777 PGAC_FUNC_WCSTOMBS_L
1779 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1780 # symbols that that library has no business exposing to the world. Pending
1781 # acquisition of a clue by those developers, ignore libedit (including its
1782 # possible alias of libreadline) while checking for everything else.
1783 LIBS_including_readline="$LIBS"
1784 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1786 AC_CHECK_FUNCS(m4_normalize([
1797 pthread_is_threaded_np
1808 # These typically are compiler builtins, for which AC_CHECK_FUNCS fails.
1809 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap16], [int x])
1810 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap32], [int x])
1811 PGAC_CHECK_BUILTIN_FUNC([__builtin_bswap64], [long int x])
1812 # We assume that we needn't test all widths of these explicitly:
1813 PGAC_CHECK_BUILTIN_FUNC([__builtin_clz], [unsigned int x])
1814 PGAC_CHECK_BUILTIN_FUNC([__builtin_ctz], [unsigned int x])
1815 PGAC_CHECK_BUILTIN_FUNC([__builtin_popcount], [unsigned int x])
1816 # __builtin_frame_address may draw a diagnostic for non-constant argument,
1817 # so it needs a different test function.
1818 PGAC_CHECK_BUILTIN_FUNC_PTR([__builtin_frame_address], [0])
1820 # We require 64-bit fseeko() to be available, but run this check anyway
1821 # in case it finds that _LARGEFILE_SOURCE has to be #define'd for that.
1824 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1825 # by calling it, 2009-04-02
1826 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1827 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1828 AS_IF([test "$PORTNAME" != "solaris"], [
1829 AC_CHECK_FUNCS(posix_fadvise)
1830 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1833 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1834 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1836 # We can't use AC_REPLACE_FUNCS to replace these functions, because it
1837 # won't handle deployment target restrictions on macOS
1838 AC_CHECK_DECLS([preadv], [], [AC_LIBOBJ(preadv)], [#include <sys/uio.h>])
1839 AC_CHECK_DECLS([pwritev], [], [AC_LIBOBJ(pwritev)], [#include <sys/uio.h>])
1841 # This is probably only present on macOS, but may as well check always
1842 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1844 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1845 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1846 [#include <machine/vmparam.h>
1847 #include <sys/exec.h>
1849 [PS_STRINGS->ps_nargvstr = 1;
1850 PS_STRINGS->ps_argvstr = "foo";])],
1851 [pgac_cv_var_PS_STRINGS=yes],
1852 [pgac_cv_var_PS_STRINGS=no])])
1853 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1854 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1857 AC_REPLACE_FUNCS(m4_normalize([
1868 if test "$enable_thread_safety" = yes; then
1869 AC_REPLACE_FUNCS(pthread_barrier_wait)
1872 if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
1873 # Cygwin and (apparently, based on test results) Mingw both
1874 # have a broken strtof(), so substitute its implementation.
1875 # That's not a perfect fix, since it doesn't avoid double-rounding,
1876 # but we have no better options.
1878 AC_MSG_NOTICE([On $host_os we will use our strtof wrapper.])
1881 # Similarly, use system's getopt_long() only if system provides struct option.
1882 if test x"$ac_cv_type_struct_option" = xyes ; then
1883 AC_REPLACE_FUNCS([getopt_long])
1885 AC_LIBOBJ(getopt_long)
1888 # On OpenBSD and Solaris, getopt() doesn't do what we want for long options
1889 # (i.e., allow '-' as a flag character), so use our version on those platforms.
1890 if test "$PORTNAME" = "openbsd" -o "$PORTNAME" = "solaris"; then
1894 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1895 # so always use our version on Windows.
1896 if test "$PORTNAME" = "win32"; then
1898 AC_LIBOBJ(getopt_long)
1901 # Win32 (really MinGW) support
1902 if test "$PORTNAME" = "win32"; then
1903 AC_CHECK_FUNCS(_configthreadlocale)
1908 AC_LIBOBJ(win32dlopen)
1910 AC_LIBOBJ(win32error)
1911 AC_LIBOBJ(win32fdatasync)
1912 AC_LIBOBJ(win32getrusage)
1913 AC_LIBOBJ(win32link)
1914 AC_LIBOBJ(win32ntdll)
1915 AC_LIBOBJ(win32pread)
1916 AC_LIBOBJ(win32pwrite)
1917 AC_LIBOBJ(win32security)
1918 AC_LIBOBJ(win32setlocale)
1919 AC_LIBOBJ(win32stat)
1921 # Cygwin needs only a bit of that
1922 if test "$PORTNAME" = "cygwin"; then
1926 AC_CHECK_FUNC(syslog,
1927 [AC_CHECK_HEADER(syslog.h,
1928 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1930 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1931 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1932 [extern int opterr; opterr = 1;])],
1933 [pgac_cv_var_int_opterr=yes],
1934 [pgac_cv_var_int_opterr=no])])
1935 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1936 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1939 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1940 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1941 [extern int optreset; optreset = 1;])],
1942 [pgac_cv_var_int_optreset=yes],
1943 [pgac_cv_var_int_optreset=no])])
1944 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1945 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1948 if test "$with_icu" = yes; then
1949 ac_save_CPPFLAGS=$CPPFLAGS
1950 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1952 # Verify we have ICU's header files
1953 AC_CHECK_HEADER(unicode/ucol.h, [],
1954 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1956 CPPFLAGS=$ac_save_CPPFLAGS
1959 if test "$with_llvm" = yes; then
1960 PGAC_CHECK_LLVM_FUNCTIONS()
1963 # Lastly, restore full LIBS list and check for readline/libedit symbols
1964 LIBS="$LIBS_including_readline"
1966 if test "$with_readline" = yes; then
1967 PGAC_READLINE_VARIABLES
1968 AC_CHECK_FUNCS(m4_normalize([
1970 history_truncate_file
1971 rl_completion_matches
1972 rl_filename_completion_function
1973 rl_reset_screen_size
1979 # This test makes sure that run tests work at all. Sometimes a shared
1980 # library is found by the linker, but the runtime linker can't find it.
1981 # This check should come after all modifications of compiler or linker
1982 # variables, and before any other run tests.
1983 AC_MSG_CHECKING([test program])
1984 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1985 [AC_MSG_RESULT(ok)],
1986 [AC_MSG_RESULT(failed)
1988 Could not execute a simple test program. This may be a problem
1989 related to locating shared libraries. Check the file 'config.log'
1990 for the exact reason.]])],
1991 [AC_MSG_RESULT([cross-compiling])])
1993 # --------------------
1994 # Run tests below here
1995 # --------------------
1997 dnl Check to see if we have a working 64-bit integer type.
1998 dnl Since Postgres 8.4, we no longer support compilers without a working
1999 dnl 64-bit type; but we have to determine whether that type is called
2000 dnl "long int" or "long long int".
2002 PGAC_TYPE_64BIT_INT([long int])
2004 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
2005 pg_int64_type="long int"
2007 PGAC_TYPE_64BIT_INT([long long int])
2008 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2009 pg_int64_type="long long int"
2011 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
2015 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
2016 [Define to the name of a signed 64-bit integer type.])
2018 # Select the printf length modifier that goes with that, too.
2019 if test x"$pg_int64_type" = x"long long int" ; then
2020 INT64_MODIFIER='"ll"'
2022 INT64_MODIFIER='"l"'
2025 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
2026 [Define to the appropriate printf length modifier for 64-bit ints.])
2028 # has to be down here, rather than with the other builtins, because
2029 # the test uses PG_INT64_TYPE.
2030 PGAC_C_BUILTIN_OP_OVERFLOW
2032 # Check size of void *, size_t (enables tweaks for > 32bit address space)
2033 AC_CHECK_SIZEOF([void *])
2034 AC_CHECK_SIZEOF([size_t])
2035 AC_CHECK_SIZEOF([long])
2037 # Determine memory alignment requirements for the basic C data types.
2039 AC_CHECK_ALIGNOF(short)
2040 AC_CHECK_ALIGNOF(int)
2041 AC_CHECK_ALIGNOF(long)
2042 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
2043 AC_CHECK_ALIGNOF(long long int)
2045 AC_CHECK_ALIGNOF(double)
2047 # Compute maximum alignment of any basic type.
2048 # We assume long's alignment is at least as strong as char, short, or int;
2049 # but we must check long long (if it is being used for int64) and double.
2050 # Note that we intentionally do not consider any types wider than 64 bits,
2051 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
2052 # for disk and memory space.
2054 MAX_ALIGNOF=$ac_cv_alignof_long
2055 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
2056 MAX_ALIGNOF=$ac_cv_alignof_double
2058 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
2059 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
2061 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
2064 # Some platforms predefine the types int8, int16, etc. Only check
2065 # a (hopefully) representative subset.
2066 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
2067 [#include <stdio.h>])
2069 # Some compilers offer a 128-bit integer scalar type.
2070 PGAC_TYPE_128BIT_INT
2072 # Check for various atomic operations now that we have checked how to declare
2074 PGAC_HAVE_GCC__SYNC_CHAR_TAS
2075 PGAC_HAVE_GCC__SYNC_INT32_TAS
2076 PGAC_HAVE_GCC__SYNC_INT32_CAS
2077 PGAC_HAVE_GCC__SYNC_INT64_CAS
2078 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
2079 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
2082 # Check for x86 cpuid instruction
2083 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
2084 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
2085 [[unsigned int exx[4] = {0, 0, 0, 0};
2086 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
2088 [pgac_cv__get_cpuid="yes"],
2089 [pgac_cv__get_cpuid="no"])])
2090 if test x"$pgac_cv__get_cpuid" = x"yes"; then
2091 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
2094 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
2095 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
2096 [[unsigned int exx[4] = {0, 0, 0, 0};
2097 __get_cpuid(exx[0], 1);
2099 [pgac_cv__cpuid="yes"],
2100 [pgac_cv__cpuid="no"])])
2101 if test x"$pgac_cv__cpuid" = x"yes"; then
2102 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2105 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2107 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2108 # with the default compiler flags. If not, check if adding the -msse4.2
2109 # flag helps. CFLAGS_CRC is set to -msse4.2 if that's required.
2110 PGAC_SSE42_CRC32_INTRINSICS([])
2111 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2112 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2115 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2116 # define __SSE4_2__ in that case.
2117 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2119 #error __SSE4_2__ not defined
2121 ])], [SSE4_2_TARGETED=1])
2123 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2125 # First check if __crc32c* intrinsics can be used with the default compiler
2126 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2127 # CFLAGS_CRC is set if the extra flag is required.
2128 PGAC_ARMV8_CRC32C_INTRINSICS([])
2129 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2130 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2133 AC_SUBST(CFLAGS_CRC)
2135 # Select CRC-32C implementation.
2137 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2138 # use the special CRC instructions for calculating CRC-32C. If we're not
2139 # targeting such a processor, but we can nevertheless produce code that uses
2140 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2141 # implementations and select which one to use at runtime, depending on whether
2142 # SSE 4.2 is supported by the processor we're running on.
2144 # Similarly, if we are targeting an ARM processor that has the CRC
2145 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2146 # we're not targeting such a processor, but can nevertheless produce code that
2147 # uses the CRC instructions, compile both, and select at runtime.
2149 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2150 # in the template or configure command line.
2151 if test x"$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
2152 # Use Intel SSE 4.2 if available.
2153 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2156 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2157 # the runtime check.
2158 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2159 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2161 # Use ARM CRC Extension if available.
2162 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_CRC" = x""; then
2165 # ARM CRC Extension, with runtime check?
2166 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2167 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2169 # fall back to slicing-by-8 algorithm, which doesn't require any
2170 # special CPU support.
2171 USE_SLICING_BY_8_CRC32C=1
2178 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2179 AC_MSG_CHECKING([which CRC-32C implementation to use])
2180 if test x"$USE_SSE42_CRC32C" = x"1"; then
2181 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2182 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2183 AC_MSG_RESULT(SSE 4.2)
2185 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2186 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2187 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2188 AC_MSG_RESULT(SSE 4.2 with runtime check)
2190 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2191 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2192 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2193 AC_MSG_RESULT(ARMv8 CRC instructions)
2195 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2196 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2197 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2198 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2200 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2201 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2202 AC_MSG_RESULT(slicing-by-8)
2207 AC_SUBST(PG_CRC32C_OBJS)
2210 # Select semaphore implementation type.
2211 if test "$PORTNAME" != "win32"; then
2212 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2213 # Need sem_open for this
2214 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2216 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2217 # Need sem_init for this
2218 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2220 AC_MSG_CHECKING([which semaphore API to use])
2221 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2222 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2223 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2224 sematype="named POSIX"
2226 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2227 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2228 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2229 sematype="unnamed POSIX"
2231 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2232 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2236 AC_MSG_RESULT([$sematype])
2238 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2239 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2243 # Select shared-memory implementation type.
2244 if test "$PORTNAME" != "win32"; then
2245 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2246 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2248 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2249 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2252 # Select random number source. If a TLS library is used then it will be the
2253 # first choice, else the native platform sources (Windows API or /dev/urandom)
2255 AC_MSG_CHECKING([which random number source to use])
2256 if test x"$with_ssl" = x"openssl" ; then
2257 AC_MSG_RESULT([OpenSSL])
2258 elif test x"$PORTNAME" = x"win32" ; then
2259 AC_MSG_RESULT([Windows native])
2260 elif test x"$cross_compiling" = x"yes"; then
2261 AC_MSG_RESULT([assuming /dev/urandom])
2263 AC_MSG_RESULT([/dev/urandom])
2264 AC_CHECK_FILE([/dev/urandom], [], [])
2266 if test x"$ac_cv_file__dev_urandom" = x"no" ; then
2268 no source of strong random numbers was found
2269 PostgreSQL can use OpenSSL, native Windows API or /dev/urandom as a source of random numbers.])
2273 # If not set in template file, set bytes to use libc memset()
2274 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2275 MEMSET_LOOP_LIMIT=1024
2277 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2280 if test "$enable_nls" = yes ; then
2284 # Check for Tcl configuration script tclConfig.sh
2285 if test "$with_tcl" = yes; then
2286 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2287 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2288 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2289 if test "$TCL_SHARED_BUILD" != 1; then
2290 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2291 Use --without-tcl to disable building PL/Tcl.])
2293 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2294 ac_save_CPPFLAGS=$CPPFLAGS
2295 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2296 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2297 CPPFLAGS=$ac_save_CPPFLAGS
2300 # check for <perl.h>
2301 if test "$with_perl" = yes; then
2302 ac_save_CPPFLAGS=$CPPFLAGS
2303 CPPFLAGS="$CPPFLAGS $perl_includespec"
2304 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2305 [#include <EXTERN.h>])
2306 # While we're at it, check that we can link to libperl.
2307 # On most platforms, if perl.h is there then libperl.so will be too, but at
2308 # this writing Debian packages them separately. There is no known reason to
2309 # waste cycles on separate probes for the Tcl or Python libraries, though.
2310 # On some Red Hat platforms, the link attempt can fail if we don't use
2311 # CFLAGS_SL while building the test program.
2312 ac_save_CFLAGS=$CFLAGS
2313 CFLAGS="$CFLAGS $CFLAGS_SL"
2314 pgac_save_LIBS=$LIBS
2315 LIBS="$perl_embed_ldflags"
2316 AC_MSG_CHECKING([for libperl])
2317 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2320 ], [perl_alloc();])],
2321 [AC_MSG_RESULT(yes)],
2323 AC_MSG_ERROR([libperl library is required for Perl])])
2324 LIBS=$pgac_save_LIBS
2325 CFLAGS=$ac_save_CFLAGS
2326 CPPFLAGS=$ac_save_CPPFLAGS
2329 # check for <Python.h>
2330 if test "$with_python" = yes; then
2331 ac_save_CPPFLAGS=$CPPFLAGS
2332 CPPFLAGS="$python_includespec $CPPFLAGS"
2333 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2334 CPPFLAGS=$ac_save_CPPFLAGS
2338 # Check for documentation-building tools
2340 PGAC_PATH_PROGS(XMLLINT, xmllint)
2341 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2342 PGAC_PATH_PROGS(FOP, fop)
2343 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2346 # Check for test tools
2348 if test "$enable_tap_tests" = yes; then
2349 # Make sure we know where prove is.
2350 PGAC_PATH_PROGS(PROVE, prove)
2351 if test -z "$PROVE"; then
2352 AC_MSG_ERROR([prove not found])
2354 # Check for necessary Perl modules. You might think we should use
2355 # AX_PROG_PERL_MODULES here, but prove might be part of a different Perl
2356 # installation than perl, eg on MSys, so we have to check using prove.
2357 AC_MSG_CHECKING(for Perl modules required for TAP tests)
2358 __CONFIG_HOST_OS__=$host_os; export __CONFIG_HOST_OS__
2359 [modulestderr=`"$PROVE" "$srcdir/config/check_modules.pl" 2>&1 >/dev/null`]
2360 if test $? -eq 0; then
2361 # log the module version details, but don't show them interactively
2362 echo "$modulestderr" >&AS_MESSAGE_LOG_FD
2365 # on failure, though, show the results to the user
2366 AC_MSG_RESULT([$modulestderr])
2367 AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])
2371 # If compiler will take -Wl,--as-needed (or various platform-specific
2372 # spellings thereof) then add that to LDFLAGS. This is much easier than
2373 # trying to filter LIBS to the minimum for each executable.
2374 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2375 # libreadline; therefore we postpone testing it until we know what library
2376 # dependencies readline has. The test code will try to link with $LIBS.
2377 if test "$with_readline" = yes; then
2378 link_test_func=readline
2383 if test "$PORTNAME" = "darwin"; then
2384 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2385 elif test "$PORTNAME" = "openbsd"; then
2386 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2388 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2391 # For linkers that understand --export-dynamic, add that to the LDFLAGS_EX_BE
2392 # (backend specific ldflags). One some platforms this will always fail (e.g.,
2393 # windows), but on others it depends on the choice of linker (e.g., solaris).
2394 PGAC_PROG_CC_LD_VARFLAGS_OPT(LDFLAGS_EX_BE, [-Wl,--export-dynamic], $link_test_func)
2395 AC_SUBST(LDFLAGS_EX_BE)
2397 # Create compiler version string
2398 if test x"$GCC" = x"yes" ; then
2399 cc_string=`${CC} --version | sed q`
2400 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2401 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2402 cc_string=`${CC} -V 2>&1 | sed q`
2407 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2408 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2409 [A string containing the version number, platform, and C compiler])
2411 # Supply a numeric version string for use by 3rd party add-ons
2412 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2413 [PG_VERSION_NUM="`echo $PG_MAJORVERSION $PG_MINORVERSION |
2414 $AWK '{printf "%d%04d", $1, $2}'`"]
2415 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2416 AC_SUBST(PG_VERSION_NUM)
2418 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2419 # literally, so that it's possible to override it at build time using
2420 # a command like "make ... PG_SYSROOT=path". This has to be done after
2421 # we've finished all configure checks that depend on CPPFLAGS.
2422 # The same for LDFLAGS, too.
2423 if test x"$PG_SYSROOT" != x; then
2424 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2425 LDFLAGS=`echo "$LDFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2427 AC_SUBST(PG_SYSROOT)
2430 # Begin output steps
2432 AC_MSG_NOTICE([using compiler=$cc_string])
2433 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2434 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2435 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2436 # Currently only used when LLVM is used
2437 if test "$with_llvm" = yes ; then
2438 AC_MSG_NOTICE([using CXX=$CXX])
2439 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2440 AC_MSG_NOTICE([using CLANG=$CLANG])
2441 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2442 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2445 # prepare build tree if outside source tree
2446 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2447 # Note 2: /bin/pwd might be better than shell's built-in at getting
2448 # a symlink-free name.
2449 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2453 if test "$no_create" != yes; then
2454 _AS_ECHO_N([preparing build tree... ])
2455 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2456 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2457 || AC_MSG_ERROR(failed)
2461 AC_SUBST(vpath_build)
2464 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2467 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2468 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2469 src/include/pg_config_os.h:src/include/port/${template}.h
2470 src/Makefile.port:src/makefiles/Makefile.${template}
2473 if test "$PORTNAME" = "win32"; then
2474 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2475 # Links sometimes fail undetected on Mingw -
2476 # so here we detect it and warn the user
2477 for FILE in $CONFIG_LINKS
2479 # test -e works for symlinks in the MinGW console
2480 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2485 AC_CONFIG_HEADERS([src/include/pg_config.h],
2487 # Update timestamp for pg_config.h (see Makefile.global)
2488 echo >src/include/stamp-h
2491 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2493 # Update timestamp for pg_config_ext.h (see Makefile.global)
2494 echo >src/include/stamp-ext-h
2497 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2498 [echo >src/interfaces/ecpg/include/stamp-h])
2502 # Ensure that any meson build directories would reconfigure and see that
2503 # there's a conflicting in-tree build and can error out.
2504 if test "$vpath_build"="no"; then