1 dnl Process this file with autoconf to produce a configure script.
3 dnl NB When updating the version for a release, update LIBRARY_VERSION_INFO
5 AC_INIT([xapian-core], [1.3.3], [http://xapian.org/bugs])
6 dnl See HACKING document for details of the reasons for required versions.
8 dnl Extract from the libtool info manual:
10 dnl Here are a set of rules to help you update your library version information:
12 dnl 1. Start with version information of '0:0:0' for each libtool library.
14 dnl 2. Update the version information only immediately before a public
15 dnl release of your software. More frequent updates are unnecessary,
16 dnl and only guarantee that the current interface number gets larger
19 dnl 3. If the library source code has changed at all since the last
20 dnl update, then increment REVISION ('C:R:A' becomes 'C:r+1:A').
22 dnl 4. If any interfaces have been added, removed, or changed since the
23 dnl last update, increment CURRENT, and set REVISION to 0.
25 dnl 5. If any interfaces have been added since the last public release,
26 dnl then increment AGE.
28 dnl 6. If any interfaces have been removed since the last public release
29 dnl then set AGE to 0.
31 dnl LIBRARY_VERSION_INFO for libxapian-1.3:
32 dnl 0:0:0 1.3.0 Reset as library renamed
33 dnl 1:0:0 1.3.0_svn16813 Default stemming strategy now STEM_SOME
34 dnl 2:0:1 1.3.1 Added TfIdfWeight, MSetIterator::at_end(), etc
35 dnl 3:0:0 1.3.2 Enquire::get_eset() overload -> default parameter
36 dnl 4:0:0 1.3.3 Database::allterms_begin() overload -> default parameter
37 LIBRARY_VERSION_INFO=4:0:0
38 AC_SUBST([LIBRARY_VERSION_INFO])
40 LIBRARY_VERSION_SUFFIX=-1.3
41 AC_SUBST([LIBRARY_VERSION_SUFFIX])
43 dnl Disabled for stable release series.
44 dnl Default to "-1.3"; for no suffix, specify: --program-suffix=
45 test x"$program_suffix" != xNONE || program_suffix=-1.3
47 dnl Where xapian.h, etc go. In development release append "/xapian-1.3".
48 dnl incdir=$includedir
49 incdir=$includedir/xapian-1.3
52 dnl Check the build directory doesn't contain a space, so we die early with
56 AC_MSG_ERROR([You can't build in a directory whose path contains a space])
60 dnl Check the source directory doesn't contain a space, so we die early with
61 dnl a helpful error. FIXME: Unfortunately, configure seems to choke before
62 dnl it gets to us so this code doesn't get a chance to fire.
65 dnl Note: for in-tree builds, the build directory test above will fire
67 AC_MSG_ERROR([You can't build with sources in a directory whose path contains a space])
71 dnl Check the prefix to install in doesn't contain a space, so we die early with
75 AC_MSG_ERROR([You can't install in a directory whose path contains a space])
79 dnl Note if the user specified a particular C++ compiler so we can give a more
80 dnl appropriate error message if we can't link a simple C++ program.
82 if test -n "$CXX" ; then
83 original_CXX="CXX=$CXX"
84 elif test -n "$CCC" ; then
85 original_CXX="CCC=$CCC"
88 dnl See HACKING document for details of the reasons for required versions.
89 AM_INIT_AUTOMAKE([1.11 -Wportability tar-ustar no-dist-gzip dist-xz std-options])
90 AC_CONFIG_SRCDIR([matcher/multiandpostlist.cc])
92 AC_CONFIG_HEADERS([config.h])
94 AC_CONFIG_MACRO_DIR([m4])
96 dnl Use libtool to manage our libraries.
100 dnl -no-undefined causes problems on Solaris with Sun CC in C++11 mode, so only
101 dnl pass -no-undefined on platforms where it is required in order to link a
102 dnl shared library at all (Windows is the main one).
104 if test unsupported = "$allow_undefined_flag" ; then
105 NO_UNDEFINED=-no-undefined
107 AC_SUBST(NO_UNDEFINED)
111 dnl A standard "gotcha" for mingw and cygwin users is to not set up their
112 dnl PATH correctly, so that MSDOS FIND.EXE is found before Unix find. Help
113 dnl them out by checking for this condition, rather than letting libtool
114 dnl fail in obscure ways. NB check the *BUILD* OS, not the host one!
116 *mingw* | *cygwin* | pw32*)
117 find /dirunlikelytoexist >/dev/null 2>&1
118 if test $? = 2 ; then
119 dnl Unix find will return 1 if the directory didn't exist, or 0 if
122 *** You appear to have an MSDOS-like FIND.EXE in your PATH ahead of any
123 *** UNIX-like find. This misconfiguration will confuse libtool - you'll need
124 *** to make sure you have a UNIX-like find installed and fix your PATH, then
125 *** rerun configure. For more information, see:
127 *** https://www.cygwin.com/faq/faq.html#faq.using.find
133 dnl Add parameters for aclocal
134 dnl (This must come after AM_INIT_AUTOMAKE, since it modifies ACLOCAL)
135 ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"
137 dnl disable "maintainer only" rules by default
140 dnl Checks for programs.
145 # Checked: freebsd8.0 openbsd4.6 solaris2.9 solaris2.10
147 linux* | k*bsd*-gnu | freebsd* | openbsd* | solaris*)
148 dnl Vanilla libtool sets this to "unknown" which it then handles as "yes".
149 link_all_deplibs_CXX=no
155 dnl Extract search path from ldconfig which is more reliable than the way
156 dnl vanilla libtool extracts them from ld.so.conf.
157 d=`/sbin/ldconfig -N -X -v 2>&AS_MESSAGE_LOG_FD|$SED 's,^\(/.*\):\( (.*)\)\?$,\1,p;d'|tr '\n' ' '`
158 test -z "$d" || sys_lib_dlsearch_path_spec=$d
163 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
164 dnl On these platforms, libtool emits a warning if -no-install is passed,
165 dnl and uses -no-fast-install instead - the least ugly way to avoid that
166 dnl warnings seems to be to duplicate the above list of platforms from
167 dnl libtool and use -no-fast-install on them directly.
168 NO_INSTALL=-no-fast-install ;;
170 NO_INSTALL=-no-install ;;
172 AC_SUBST([NO_INSTALL])
174 dnl For reasons which are beyond me, if autoconf can't find a C++ compiler
175 dnl it will set CXX to g++ (which obviously won't work) rather than actually
176 dnl telling the user that it couldn't find a C++ compiler and telling them
177 dnl to either install one or set CXX if there's one configure failed to find.
178 dnl It's probably worthwhile checking that the C++ compiler actually works
180 if test -n "$CXX" ; then
182 AC_MSG_CHECKING([whether $CXX is a working C++ compiler])
183 AC_CACHE_VAL([xo_cv_cxx_works],
185 AC_TRY_RUN([int main() {}],
188 AC_TRY_LINK([], [], xo_cv_cxx_works=yes, xo_cv_cxx_works=no))
190 AC_MSG_RESULT([$xo_cv_cxx_works])
194 if test no = "$xo_cv_cxx_works" ; then
195 case $original_CXX in
197 dnl CCC is handled in a slightly odd way - if its value isn't an
198 dnl executable (taking PATH into account) then it is ignored!
199 test "$original_CXX" = "CCC=$CXX" || original_CXX=
202 if test -z "$original_CXX" ; then
204 *** You need a working C++ compiler to compile Xapian, but configure failed to
205 *** find one. If you have a working C++ compiler, you can tell configure where
206 *** to find it by invoking it like so:
208 *** ./configure CXX=/opt/bin/c++
212 *** You need a working C++ compiler to compile Xapian, but the compiler you
213 *** specified (with '$original_CXX') doesn't appear to be able to successfully
214 *** compile and link a simple program.
219 dnl Probe for any options needed to enable C++11 support.
220 AX_CXX_COMPILE_STDCXX_11
222 dnl We don't use a C compiler to compile Xapian's code, but on some platforms
223 dnl (e.g. mingw) libtool uses $LTCC which defaults to $CC, and it's also use to
224 dnl build auxiliary tools like snowball and lemon.
227 dnl We want a non-cross-compiling C compiler for building lemon with.
228 if test -z "$CC_FOR_BUILD" ; then
229 if test yes = "$cross_compiling"; then
235 AC_ARG_VAR([CC_FOR_BUILD], [C compiler command for native compilation (needed to compile build tools during cross-builds)])
237 dnl Run tests using the C++ compiler.
242 AC_SUBST([XAPIAN_LDFLAGS])
243 AC_SUBST([XAPIAN_LIBS])
245 AC_DEFUN([XAPIAN_TEST_LINKER_FLAG],
247 AC_MSG_CHECKING([for $CXX -Wl,$1])
248 AC_CACHE_VAL([xo_cv_$2],
251 dnl The option in $1 will start with a dash so needs protecting. We can't
252 dnl use -e as Solaris /usr/bin/grep doesn't support that, so prepend an
253 dnl empty group instead.
254 if $CXX -Wl,$1 >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD|grep '\(\)'$1 >/dev/null 2>&1; then
255 dnl The error message contains the flag name - it must be a
256 dnl complaint that the option is unrecognized (doing it this
257 dnl way allows it to work regardless of the i18n in use):
258 dnl ld: unrecognized option '--enable-runtime-pseudo-reloc'
266 AC_MSG_RESULT([$xo_cv_$2])
269 dnl Test if the compiler works with $1 added to CXXFLAGS; if it does, add $1 to
270 dnl variable $2. If the test passes, also do $3; if it fails, also do $4.
271 AC_DEFUN([XAPIAN_TEST_CXXFLAGS],
273 XTC_save_CXXFLAGS=$CXXFLAGS
274 CXXFLAGS="$CXXFLAGS $1"
275 AC_TRY_COMPILE([], [],
277 CXXFLAGS=$XTC_save_CXXFLAGS
279 [CXXFLAGS=$XTC_save_CXXFLAGS
284 if test yesyes = "$GXX$enable_shared" ; then
287 XAPIAN_TEST_LINKER_FLAG([--enable-runtime-pseudo-reloc], [enable_runtime_pseudo_reloc],
288 [ldflags="-Wl,$flag"],
290 dnl Can't use AC_DISABLE_SHARED after AC_PROG_LIBTOOL, but
291 dnl this test needs to be after AC_PROG_LIBTOOL, so we can't
292 dnl just disable the shared build automatically...
293 AC_MSG_ERROR([ld version too old to support a shared build - configure with --disable-shared, or install binutils 2.13.90-20030111-1 or later])
298 dnl Only works for ldflags which can be specified anywhere on the link line.
301 dnl Preserve the default CXXFLAGS.
302 save_CXXFLAGS=$CXXFLAGS
304 dnl x86 has excess precision issues with 387 FP instructions, which are
305 dnl avoided by using SSE instructions instead. This is also faster (~6% in
306 dnl a CPU bound testcase).
308 [AS_HELP_STRING([--disable-sse],
309 [disable use of SSE FP instructions on x86])]
310 [AS_HELP_STRING([[--enable-sse[=sse|sse2]]],
311 [set which SSE FP instructions to use on x86 (default: sse2)])],
312 [case ${enableval} in
314 *) AC_MSG_ERROR([bad value ${enableval} for --enable-sse or --disable-sse]) ;;
318 dnl Some versions of Sun's C++ compiler reportedly need an explicit -lm.
319 dnl The maths functions we use include: exp log ceil fabs sqrt
320 AC_MSG_CHECKING([if -lm is required for maths functions])
321 dnl Don't use constant arguments as the compiler might simply evaluate the
322 dnl whole expression at compile time, and it might inline certain functions
323 dnl so test several functions. Also write results using printf() so that
324 dnl the compiler can't optimise away the computations.
325 AC_TRY_LINK([#ifdef __SUNPRO_CC
326 #error Need -lm for Sun C++ 5.9 under libtool 2.2.10
331 using namespace std;], [
332 double a = log(ceil(time(NULL)/7.0));
333 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));
334 ], [AC_MSG_RESULT([no])], [
336 AC_TRY_LINK([#include <cmath>
339 using namespace std;], [
340 double a = log(ceil(time(NULL)/7.0));
341 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));],
342 [AC_MSG_RESULT([yes])],
343 [AC_MSG_ERROR([Failed to link a C++ program using <cmath>])
347 dnl C++11 should have log2(), but keep this check for now to allow for
348 dnl compilers with incomplete library support for C++11.
349 AC_CHECK_DECLS([log2], [], [], [#include <cmath>])
351 dnl See if <typeinfo> can be used in the testsuite - at least for GCC and xlC,
352 dnl compilation of the test code below fails if RTTI isn't being generated
353 dnl (g++ -fno-rtti, or by default with xlC).
354 AC_MSG_CHECKING([if RTTI is supported])
355 save_CXXFLAGS=$CXXFLAGS
356 dnl xlC issues a warning for typeid() being used without RTTI being enabled,
357 dnl so for this test we pass the xlC option to make that warning into an error.
358 XAPIAN_TEST_CXXFLAGS([-qhaltonmsg=1540-2412], [CXXFLAGS])
361 #include <typeinfo>],
366 } catch (std::exception & e) {
367 return typeid(e).name()[0];
370 AC_DEFINE([USE_RTTI], [1], [Define if the testsuite can use RTTI]),
372 CXXFLAGS=$save_CXXFLAGS
374 dnl Check for time functions.
375 AC_CHECK_FUNCS([clock_gettime sleep nanosleep gettimeofday ftime])
379 dnl For _ftime64() on mingw we need to tell it we're happy to require
380 dnl MSVCRT 6.10 or higher, which isn't too onerous a requirement it seems.
381 AC_DEFINE([__MSVCRT_VERSION__], [0x0601], [Define on mingw to the minimum msvcrt version to assume])
382 AC_DEFINE([MINGW_HAS_SECURE_API], [1], [Define on mingw to get _s suffixed "secure" functions declared in headers])
386 dnl We use timer_create() if available to implement a search time limit.
388 AC_SEARCH_LIBS([timer_create], [rt],
389 [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"
390 AC_DEFINE([HAVE_TIMER_CREATE], [1], [Define to 1 if you have the 'timer_create' function.])])
393 dnl Used by tests/soaktest/soaktest.cc
394 AC_CHECK_FUNCS([srandom random])
396 dnl Used by tests/harness/testsuite.cc
397 AC_CHECK_FUNCS([sigaction])
398 AC_MSG_CHECKING([for sigsetjmp and siglongjmp])
399 AC_TRY_COMPILE([#include <setjmp.h>],
400 [sigjmp_buf jb; if (sigsetjmp(jb, 1)) { siglongjmp(jb, 1); }],
401 AC_DEFINE([HAVE_SIGSETJMP], [1], [Define to 1 if you have the 'sigsetjmp' function])
402 AC_MSG_RESULT([yes]),
405 dnl Used by tests/harness/cputimer.cc:
406 AC_CHECK_FUNCS([getrusage times sysconf])
408 dnl Used by tests/api_replicate.cc, tests/queryparsertest.cc and
409 dnl tests/termgentest.cc.
411 dnl Solaris < 10 only has putenv().
413 dnl Microsoft have marked putenv() as deprecated, so we use _putenv_s() under
414 dnl MSVC to avoid deprecation warnings. We probe here since mingw doesn't
415 dnl currently (v3.20) provide _putenv_s(), so we can't just use it conditional
416 dnl on __WIN32__ being defined.
417 AC_CHECK_FUNCS([setenv _putenv_s])
419 dnl Check for a more efficient way of closing fds during daemonisation.
420 dnl Apparently closefrom() is available on at least "Solaris 9 or later, NetBSD
421 dnl 3.0 or later, OpenBSD 3.5 or later". If we don't have closefrom(), then
422 dnl dirfd() and getrlimit are useful for an efficient implementation on some
424 AC_CHECK_FUNCS([closefrom dirfd getrlimit])
426 dnl See if ftime returns void (as it does on mingw)
427 AC_MSG_CHECKING([return type of ftime])
428 if test $ac_cv_func_ftime = yes ; then
429 AC_TRY_COMPILE([#include <sys/timeb.h>],
430 [struct timeb tp; int i = ftime(&tp);],
431 AC_MSG_RESULT([int]),
432 AC_MSG_RESULT([void])
433 AC_DEFINE([FTIME_RETURNS_VOID], [1], [Define if ftime returns void]))
436 dnl Check how to find the hostname: uname() in sys/utsname.h, or gethostname()
437 dnl Don't use default includes as inttypes.h is found by Compaq C but not C++
438 dnl so it causes all header probes to fail.
439 AC_CHECK_HEADERS([sys/utsname.h], [], [], [ ])
440 AC_CHECK_FUNCS([gethostname])
442 dnl mingw (for instance) lacks ssize_t
449 AC_CHECK_SIZEOF([short])
450 AC_CHECK_SIZEOF([int])
451 AC_CHECK_SIZEOF([long])
452 AC_CHECK_SIZEOF([long long])
454 AC_MSG_CHECKING([for 32 bit integer type])
455 case $ac_cv_sizeof_short:$ac_cv_sizeof_int:$ac_cv_sizeof_long in
456 *:4:*) INT32_T=int ;;
457 *:*:4) INT32_T=long ;;
458 4:*) INT32_T=short ;;
460 AC_MSG_RESULT([none found])
461 AC_MSG_ERROR([No 32 bit integer type found])
463 AC_MSG_RESULT([$INT32_T])
465 AC_MSG_CHECKING([for 64 bit integer type])
466 case $ac_cv_sizeof_int:$ac_cv_sizeof_long:$ac_cv_sizeof_long_long in
468 *:8:*) INT64_T=long ;;
469 *:*:8) INT64_T='long long' ;;
471 AC_MSG_RESULT([none found])
472 AC_MSG_ERROR([No 64 bit integer type found])
474 AC_MSG_RESULT([$INT64_T])
476 dnl Check for perl (needed to generate some sources and documentation).
477 AC_PATH_PROG([PERL], [perl], [])
478 if test x$USE_MAINTAINER_MODE = xyes; then
479 test -z "$PERL" && AC_MSG_ERROR([perl is required in maintainer mode])
482 AC_ARG_ENABLE([64bit_docid],
483 [AS_HELP_STRING([--enable-64bit-docid], [enable 64bit docid [default=no]])],
484 [case ${enableval} in
486 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-docid]) ;;
488 [enable_64bit_docid=no])
490 AC_ARG_ENABLE([64bit_termcount],
491 [AS_HELP_STRING([--enable-64bit-termcount], [enable 64bit termcount [default=no]])],
492 [case ${enableval} in
494 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-termcount]) ;;
496 [enable_64bit_termcount=no])
498 AC_ARG_ENABLE([documentation],
499 [AS_HELP_STRING([--enable-documentation], [enable make rules to rebuild documentation [default=maintainer-mode]])],
500 [case ${enableval} in
502 *) AC_MSG_ERROR([bad value ${enableval} for --enable-documentation]) ;;
504 [enable_documentation=$USE_MAINTAINER_MODE])
505 AM_CONDITIONAL([DOCUMENTATION_RULES], [test x"$enable_documentation" = xyes])
506 AM_CONDITIONAL([MAINTAINER_NO_DOCS], [test x"$USE_MAINTAINER_MODE$enable_documentation" = xyesno])
508 if test x"$enable_documentation" = xyes ; then
509 dnl Checks for dot. (Diagrams in the documentation)
510 AC_PATH_PROG([DOT], [dot])
511 test -z "$DOT" && AC_MSG_ERROR([dot (part of the graphviz package) is required to build documentation])
512 DOXYGEN_DOT_PATH=`echo "$DOT" | sed 's!/dot$!!'`
513 AC_SUBST([DOXYGEN_DOT_PATH])
515 dnl Check for doxygen. (Needed to make some more of the documentation)
516 AC_PATH_PROG([DOXYGEN], [doxygen], [])
517 test -z "$DOXYGEN" && AC_MSG_ERROR([doxygen is required to build documentation])
519 dnl Check for help2man. (Needed to make man pages from "--help" output).
520 AC_PATH_PROG([HELP2MAN], [help2man], [])
521 test -z "$HELP2MAN" && AC_MSG_ERROR([help2man is required to build documentation])
523 dnl Check for rst2html. (Needed to make HTML from reStructuredText format)
524 dnl Also look for rst2html.py, which archlinux reportedly installs it as.
525 AC_PATH_PROGS([RST2HTML], [rst2html rst2html.py], [])
526 test -z "$RST2HTML" && AC_MSG_ERROR([rst2html is required to build documentation (try package python-docutils)])
528 dnl Check for pngcrush, which we optionally use to reduce the size of the
529 dnl PNG files which doxygen generates. We can get by without it, so don't
530 dnl fail here if it's not found.
531 AC_PATH_PROG([PNGCRUSH], [pngcrush], [])
534 dnl Check whether we need -ldl for dlsym() etc.
535 dnl No longer used...
536 dnl AC_TRY_LINK_FUNC([dlsym], ,
537 dnl [AC_CHECK_LIB([dl], [dlsym], [DL_LIBS="-ldl"])])
538 dnl AC_SUBST([DL_LIBS])
540 dnl Checks for header files.
541 AC_CHECK_HEADERS([fcntl.h limits.h sys/errno.h sys/select.h], [], [], [ ])
542 AC_CHECK_HEADERS([sys/resource.h],
543 [], [], [#include <sys/types.h>])
545 dnl If valgrind is installed and new enough, we use it for leak checking in the
546 dnl testsuite. If VALGRIND is set to an empty value, then skip the check and
547 dnl don't use valgrind.
548 if test -n "${VALGRIND-unset}" ; then
549 AC_PATH_PROG([VALGRIND], [valgrind], [])
550 if test -n "$VALGRIND" ; then
551 dnl Check that the installed valgrind version works, and supports the
552 dnl options we use. This means we won't try to use valgrind < 3.3.0
553 dnl (released 7/12/2007) since before that --log-file didn't expand
554 dnl %p (and appended the process id).
556 dnl No need to check for VALGRIND_COUNT_LEAKS now - that was added before
558 AC_MSG_CHECKING([if valgrind supports --log-file with %p])
559 vglog=config.vglog.%p.tmp
560 vglogwild="config.vglog.*.tmp*"
562 if $VALGRIND --log-file="$vglog" -q true 2>&AS_MESSAGE_LOG_FD ; then
563 for f in $vglogwild ; do
565 $vglog*) VALGRIND= ;;
568 if test x"$VALGRIND" = x ; then
572 AC_CHECK_HEADERS([valgrind/memcheck.h], [], [VALGRIND=], [ ])
575 dnl The valgrind detected doesn't seem to work! Perhaps this is an
576 dnl x86_64 box with a 32 bit valgrind.
577 AC_MSG_RESULT([$VALGRIND doesn't work])
584 if test -n "$VALGRIND" ; then
585 AC_DEFINE([HAVE_VALGRIND], [1], [Define if a suitable valgrind is installed])
588 dnl If eatmydata is installed, we run the testsuite under it to speed it up.
589 dnl If EATMYDATA is set to an empty value, then skip this check and don't use
591 if test -n "${EATMYDATA-unset}" ; then
592 AC_PATH_PROG([EATMYDATA], [eatmydata], [])
595 dnl Checks for library functions.
598 AC_CHECK_DECLS([sys_errlist, _sys_errlist, sys_nerr, _sys_nerr])
600 dnl Check that snprintf actually works as it's meant to.
602 dnl Linux 'man snprintf' warns:
603 dnl Linux libc4.[45] does not have a snprintf, but provides a libbsd that
604 dnl contains an snprintf equivalent to sprintf, i.e., one that ignores the
605 dnl size argument. Thus, the use of snprintf with early libc4 leads to
606 dnl serious security problems.
608 dnl It also warns that glibc < 2.0.6 (and presumably other pre-C90
609 dnl implementations) return -1 when truncating so check that we get the
610 dnl ISO C90 semantics for the returned length when truncating. If we
611 dnl have a working snprintf but with non-ISO return semantics, handle
612 dnl that case separately as it may still be useful in many cases.
614 dnl mingw has _snprintf so check for that too.
615 AC_MSG_CHECKING([for working ISO C90 conforming snprintf])
616 ac_cv_func_snprintf_noniso=no
617 for func in snprintf _snprintf ; do
625 dnl Return different exit status for each error so we can see which
626 dnl check failed by consulting config.log.
628 char buffer[4] = "abc";
629 int res1 = $func(buffer, 2, "%s", "XYZ");
630 if (memcmp(buffer, "X\0c", 4) != 0) return 2;
631 int res2 = $func(buffer, 2, "%x", 0x12);
632 if (memcmp(buffer, "1\0c", 4) != 0) return 3;
633 if (res1 == -1 && res2 == -1) return 15; /* Pre-ISO semantics. */
634 if (res1 != 3) return 4;
635 if (res2 != 2) return 5;
638 [ac_cv_func_snprintf=$func;break],
640 if test 15no = "$?$ac_cv_func_snprintf_noniso" ; then
641 ac_cv_func_snprintf_noniso=$func
643 ac_cv_func_snprintf=no
645 [ac_cv_func_snprintf=unknown;break]
648 AC_MSG_RESULT([$ac_cv_func_snprintf])
649 case $ac_cv_func_snprintf in
651 AC_MSG_CHECKING([for working non-ISO C90 conforming snprintf])
652 AC_MSG_RESULT([$ac_cv_func_snprintf_noniso])
653 if test no != "$ac_cv_func_snprintf_noniso" ; then
654 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf_noniso],
655 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
659 dnl be conservative when crosscompiling
662 AC_DEFINE_UNQUOTED([SNPRINTF_ISO], [$ac_cv_func_snprintf],
663 [Define to the name of a function implementing snprintf with ISO C99 semantics (if one exists)])
664 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf],
665 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
669 dnl ***************************
670 dnl * Select modules to build *
671 dnl ***************************
673 dnl Check which database backends should be built.
675 AC_DEFUN([XAPIAN_BACKEND_ENABLE],
676 [AC_ARG_ENABLE([backend_$1],
677 [AS_HELP_STRING([--enable-backend-$1], [build the $1 database backend [default=yes]])],
680 *) AC_MSG_ERROR([Invalid option: '--enable-backend-$1=$enableval']) ;;
681 esac], [enable_backend_$1=yes])
684 dnl When adding a new backend, update INSTALL too.
685 XAPIAN_BACKEND_ENABLE([chert])
686 XAPIAN_BACKEND_ENABLE([glass])
687 XAPIAN_BACKEND_ENABLE([inmemory])
688 XAPIAN_BACKEND_ENABLE([remote])
691 case $enable_backend_chert$enable_backend_glass in
693 dnl We use zlib for compressing tags in chert/glass. We could
694 dnl automatically disable support if zlib isn't found, but overall that
695 dnl probably does more harm than good - it's most likely that someone just
696 dnl forgot to install the -dev package for zlib.
698 dnl Similarly for uuid support.
700 dnl Check for zlib.h.
701 AC_CHECK_HEADERS([zlib.h], [], [
702 AC_MSG_ERROR([zlib.h not found - required for chert and glass (you may need to install the zlib1g-dev or zlib-devel package)])
705 dnl Check for zlibVersion in -lz.
707 dnl mingw build needs -lzlib or -lzdll.
708 AC_SEARCH_LIBS([zlibVersion], [z zlib zdll], [], [
709 AC_MSG_ERROR([zlibVersion() not found in -lz, -lzlib, or -lzdll - required for chert and glass (you may need to install the zlib1g-dev or zlib-devel package)])
711 if test x != x"$LIBS" ; then
712 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
716 dnl Find the UUID library (from e2fsprogs/util-linux-ng, not the OSSP one).
719 *mingw* | *cygwin*) dnl Use built-in API.
723 dnl Check for uuid/uuid.h (e2fsprogs/util-linux-ng) or uuid.h
724 dnl (FreeBSD/NetBSD).
725 AC_CHECK_HEADERS([uuid/uuid.h], [
726 dnl util-linux-ng's uuid/uuid.h found - check for uuid_generate in
729 AC_SEARCH_LIBS([uuid_generate], [uuid], [], [
730 AC_MSG_ERROR([uuid_generate() not found in -luuid - required for chert and glass (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
732 if test x != x"$LIBS" ; then
733 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
736 dnl Try uuid.h as found on FreeBSD/NetBSD, with associated code in libc.
737 AC_CHECK_HEADERS([uuid.h], [
738 dnl Check for uuid_create with no extra libraries required.
739 AC_CHECK_FUNC([uuid_create], [], [
740 AC_MSG_ERROR([uuid.h found, but uuid_create() not found. You probably wants to install libuuid from util-linux-ng or e2fsprogs (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
743 AC_MSG_ERROR([Neither uuid/uuid.h nor uuid.h found - required for chert and glass (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
749 dnl Older versions of libuuid (such as that on CentOS 4.7) don't have
750 dnl uuid_unparse_lower(), only uuid_unparse().
751 AC_LINK_IFELSE([AC_LANG_CALL([], [uuid_unparse_lower])],
753 AC_DEFINE([HAVE_UUID_UNPARSE_LOWER], [1],
754 [Define to 1 if you have the 'uuid_unparse_lower' function.])
759 AM_CONDITIONAL([USE_WIN32_UUID_API], [test "$use_win32_uuid_api" = 1])
762 if test "$enable_backend_remote" = yes ; then
763 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
767 ]])], [win32=no], [win32=yes])
769 case $host_os-$win32 in
771 dnl For mingw and msvc we have an alternative implementation which
772 dnl doesn't need fork() or socketpair().
774 dnl We need -lws2_32 for getaddrinfo(), etc.
776 dnl Vista is needed for the AI_ADDRCONFIG flag to getaddrinfo().
777 AC_DEFINE([WINVER], [0x600],
778 [Version of Windows to assume (0x600 => Vista).])
779 AC_DEFINE([_WIN32_WINNT], [WINVER],
780 [Version of Windows to assume.])
783 dnl DJGPP has a dummy implementation of fork which always fails.
785 dnl For disk-based backend, use flock() for locking, which doesn't need
786 dnl fork() or socketpair().
787 AC_DEFINE([FLINTLOCK_USE_FLOCK], 1, [Define to use flock() for flint-compatible locking])
788 dnl If someone actually wanted remote backend support, then DJGPP has a
789 dnl pthreads port, so using threads like we do on Windows would make more
791 enable_backend_remote=no
794 dnl On Unix, we need fork and socketpair for the remotebackend.
796 AC_CHECK_FUNCS([fork], [], [
797 AC_MSG_ERROR([fork() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
799 dnl Check if -lsocket is required for socketpair (Solaris needs it).
800 dnl And on Haiku it's in -lnetwork.
801 AC_SEARCH_LIBS([socketpair], [socket network], [], [
802 AC_MSG_ERROR([socketpair() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
804 AC_DEFINE([HAVE_SOCKETPAIR], [1],
805 [Define to 1 if you have the 'socketpair' function.])
806 dnl Check if extra libraries are needed for getaddrinfo or inet_ntop()
807 dnl (e.g. on Solaris).
809 dnl We're currently assuming that any system that is worth trying to
810 dnl support has getaddrinfo() and inet_ntop(), since these are the
811 dnl standard route for supporting IPv6, and that's pretty much essential
812 dnl for platforms to support now.
813 AC_SEARCH_LIBS([getaddrinfo], [nsl socket], [], [
814 AC_MSG_ERROR([getaddrinfo() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
816 AC_SEARCH_LIBS([inet_ntop], [nsl socket], [], [
817 AC_MSG_ERROR([inet_ntop() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
824 if test "$enable_backend_remote" = yes ; then
826 XAPIAN_LIBS="$XAPIAN_LIBS $REMOTE_LIBS"
830 AC_ARG_ENABLE([visibility],
831 [AS_HELP_STRING([--disable-visibility], [disable use of GCC visibility])],
832 [case ${enableval} in
834 *) AC_MSG_ERROR([bad value ${enableval} for --disable-visibility]) ;;
838 if test "`pwd`" != "`cd $srcdir;pwd`" ; then
841 AM_CONDITIONAL([VPATH_BUILD], [test yes = "$vpath_build"])
843 dnl Turn off compilation of anything that we don't have the requirements for
845 dnl Set conditionals to specify what we compile
847 AM_CONDITIONAL([BUILD_BACKEND_CHERT], [test yes = "$enable_backend_chert"])
848 AM_CONDITIONAL([BUILD_BACKEND_GLASS], [test yes = "$enable_backend_glass"])
849 AM_CONDITIONAL([BUILD_BACKEND_INMEMORY], [test yes = "$enable_backend_inmemory"])
850 AM_CONDITIONAL([BUILD_BACKEND_REMOTE], [test yes = "$enable_backend_remote"])
851 AM_CONDITIONAL([BUILD_BACKEND_CHERT_OR_GLASS],
852 [test nono != "$enable_backend_chert$enable_backend_glass"])
854 dnl Used to decide if we should use the zlib-vg.so LD_PRELOAD hack.
856 if test -n "$VALGRIND" ; then
858 linux*) use_zlib_vg=yes ;;
861 AM_CONDITIONAL([USE_ZLIB_VG], [test yes = "$use_zlib_vg"])
863 dnl See if we have fdatasync, and what libraries are needed for it.
864 dnl We need to actually check for a declaration as OS X has a dummy
865 dnl implementation in the library which is not prototyped in any header.
866 AC_CHECK_DECL([fdatasync(int)], [
868 AC_SEARCH_LIBS([fdatasync], [rt], [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"])
870 AC_CHECK_FUNCS([fdatasync])
872 [ac_cv_func_fdatasync=no],
873 [#include <unistd.h>]
876 AC_CHECK_FUNCS([fsync])
877 AC_CHECK_FUNCS([posix_fadvise])
879 dnl HP-UX has pread and pwrite, but they don't work! Apparently this problem
880 dnl manifests when largefile support is enabled, and we definitely want that
881 dnl so don't use pread or pwrite on HP-UX.
884 AC_MSG_CHECKING([for pread])
885 AC_MSG_RESULT([present but broken on $host_os])
886 AC_MSG_CHECKING([for pwrite])
887 AC_MSG_RESULT([present but broken on $host_os])
890 AC_CHECK_FUNC([pread],
891 [AC_DEFINE([HAVE_PREAD], [1],
892 [Define if pread is available on this system])
893 AC_MSG_CHECKING([for any prototype needed for pread])
894 AC_CACHE_VAL([xo_cv_pread_prototype],
897 'extern "C" ssize_t pread(int, void *, size_t, off_t) throw ();' \
898 'extern "C" ssize_t pread(int, void *, size_t, off_t);' ; do
900 #include <sys/types.h>
905 pread(1, b, 256, 20);
907 xo_cv_pread_prototype="$p"
911 if test -z "$xo_cv_pread_prototype"; then
912 AC_MSG_RESULT([not found])
913 AC_MSG_ERROR([Failed to find working prototype for pread])
916 if test " " = "$xo_cv_pread_prototype" ; then
917 AC_MSG_RESULT([none required])
919 AC_MSG_RESULT([$xo_cv_pread_prototype])
920 AC_DEFINE_UNQUOTED([PREAD_PROTOTYPE], [$xo_cv_pread_prototype],
921 [explicit prototype needed for pread (if any)])
924 AC_CHECK_FUNC([pwrite],
925 [AC_DEFINE([HAVE_PWRITE], [1],
926 [Define if pwrite is available on this system])
927 AC_MSG_CHECKING([for any prototype needed for pwrite])
928 AC_CACHE_VAL([xo_cv_pwrite_prototype],
931 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t) throw ();' \
932 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t);' ; do
934 #include <sys/types.h>
938 const char *p = "hello";
941 xo_cv_pwrite_prototype="$p"
945 if test -z "$xo_cv_pwrite_prototype"; then
946 AC_MSG_RESULT([not found])
947 AC_MSG_ERROR([Failed to find working prototype for pwrite])
950 if test " " = "$xo_cv_pwrite_prototype" ; then
951 AC_MSG_RESULT([none required])
953 AC_MSG_RESULT([$xo_cv_pwrite_prototype])
954 AC_DEFINE_UNQUOTED([PWRITE_PROTOTYPE], [$xo_cv_pwrite_prototype],
955 [explicit prototype needed for pwrite (if any)])
961 AC_CHECK_FUNCS([link])
963 dnl *************************
964 dnl * Set debugging options *
965 dnl *************************
967 dnl Which assertion types to enable in the code.
969 AC_ARG_ENABLE([assertions],
970 [AS_HELP_STRING([--enable-assertions], [enable debug assertions (no|partial|yes) [default=no]])],
974 AC_MSG_ERROR([Invalid option: '--enable-assertions=$enableval']) ;;
978 [AS_HELP_STRING([--enable-log], [generate a log of methods called, etc (no|yes|profile) [default=no]])],
982 AC_MSG_ERROR(['--enable-log=profile' is no longer supported - see http://trac.xapian.org/wiki/ProfilingXapian for alternatives.]) ;;
984 AC_MSG_ERROR([Invalid option: '--enable-log=$enableval']) ;;
987 dnl Set defines according to the --enable-assertions and --enable-log options
990 if test yes = "$enable_assertions" || test partial = "$enable_assertions" ; then
991 AC_DEFINE([XAPIAN_ASSERTIONS],,
992 [Define if you want assertions (causes some slow-down)])
995 if test yes = "$enable_assertions"; then
996 AC_DEFINE([XAPIAN_ASSERTIONS_PARANOID],,
997 [Define if you want paranoid assertions (causes significant slow-down)])
1000 if test yes = "$enable_log"; then
1001 AC_DEFINE([XAPIAN_DEBUG_LOG],,
1002 [Define if you want a log of methods called and other debug messages])
1005 dnl ******************************
1006 dnl * Set special compiler flags *
1007 dnl ******************************
1009 dnl Set flags to control warnings (enable more, or disable annoying ones).
1011 if test yes = "$GXX"; then
1012 dnl Intel's C++ compiler and clang both lie and define __GNUC__, so check which
1013 dnl we actually have, as neither is really 100% compatible.
1014 case `echo __INTEL_COMPILER __clang__|$CXX -E - 2>&AS_MESSAGE_LOG_FD|grep -v '^#'` in
1015 *__INTEL_COMPILER*__clang__*)
1016 dnl GCC (since neither substituted):
1018 dnl -Wundef was supported by g++ 3.0 and -fshow-column by g++ 3.1.
1020 dnl -Wlogical-op and -Wmissing-declarations (for C++) were added in
1023 dnl All the other options were supported by g++ 2.95.
1024 AM_CXXFLAGS="$AM_CXXFLAGS -fshow-column -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wno-long-long -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual -Wstrict-null-sentinel -Wshadow -Wstrict-overflow=1 -Wlogical-op -Wmissing-declarations"
1026 dnl The exact format of g++ --version seems to change with almost every
1027 dnl minor release so use the preprocessor macros which should be more
1029 AC_MSG_CHECKING([for version of $CXX])
1030 gxx_version=`echo __GNUC__.__GNUC_MINOR__.__GNUC_PATCHLEVEL__|$CXX -E -|sed '/^#/d;s/ //g'`
1031 AC_MSG_RESULT([GCC $gxx_version])
1033 case $gxx_version in
1034 [[0123]].*|4.[[0123]].*)
1035 AC_MSG_ERROR([Xapian requires GCC 4.4 or later])
1039 dnl -Wdouble-promotion was added in GCC 4.6.
1041 dnl -Winit-self was added in GCC 3.4, but for GCC < 4.7 g++ always
1042 dnl warns for this case with -Wuninitialized (implied by -W). We
1043 dnl don't intend to use this idiom, so any instances are bugs we'd
1044 dnl like to know about.
1045 AM_CXXFLAGS="$AM_CXXFLAGS -Wdouble-promotion -Winit-self" ;;
1049 dnl -Wconversion in older GCC versions is intended to help migration
1050 dnl from K&R to ISO C, and isn't useful for us. In 4.3 it was renamed
1051 dnl to -Wtraditional-conversion and a new -Wconversion added which
1052 dnl sounds useful but is a bit buggy currently. So we should consider
1053 dnl enabling -Wconversion once it is stabilised (GCC 4.4 or ...)
1055 dnl -Wold-style-cast is interesting, but triggers for macros from
1056 dnl system headers (e.g. FD_SET) (tested with GCC 4.4).
1058 dnl Automatically add -Werror if maintainer mode is enabled.
1059 if test x$USE_MAINTAINER_MODE = xyes; then
1060 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1064 dnl Intel's compiler (since __clang__ not substituted):
1066 dnl -w1 stops the avalanche of uninteresting "remark" messages.
1067 dnl -wd... disables warnings which don't have good code workarounds.
1068 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -w1 -wd177,1572"
1070 dnl Automatically add -Werror if maintainer mode is enabled.
1071 if test x$USE_MAINTAINER_MODE = xyes; then
1072 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1076 dnl clang (since __INTEL_COMPILER not substituted):
1077 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wno-long-long -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual"
1078 AM_CXXFLAGS="$AM_CXXFLAGS -Wshadow -Wstrict-overflow=1 -Winit-self -Wmissing-declarations"
1080 dnl Automatically add -Werror if maintainer mode is enabled.
1081 if test x$USE_MAINTAINER_MODE = xyes; then
1082 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1087 if test no != "$enable_visibility"; then
1088 dnl GCC doesn't support symbol visibility on all platforms (e.g. it isn't
1090 AC_MSG_CHECKING([if $CXX -fvisibility=hidden works])
1091 if echo 'int bar() __attribute__((visibility("default"))); int foo() {return 42;}'|$CXX -Werror -fvisibility=hidden -c -oconftest.o -xc++ - >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
1092 AC_MSG_RESULT([yes])
1093 AM_CXXFLAGS="$AM_CXXFLAGS -fvisibility=hidden"
1094 dash_d_visibility=-DXAPIAN_ENABLE_VISIBILITY
1100 dnl Not GCC, nor a compiler masquerading as GCC.
1103 dnl +w turns on more warnings.
1104 dnl +wlint turns on "lint-like" warnings.
1105 dnl +W<n1>,<n2>,... suppresses warnings n1, n2, ...
1106 dnl 2340 (remark) "value copied to temporary, reference to temporary
1107 dnl use", in: throw Xapian::UnimplementedError("...");
1108 dnl 2401 "destructor for base class ... is non-virtual" (we don't need a
1109 dnl virtual destructor for intrusive_base, since we never delete
1110 dnl its subclasses by a intrusive_base *).
1111 dnl 3348 "declaration hides constant ..." which seems to misfire!
1112 dnl 4255 (remark) "padding size of struct "..." with ... bytes to
1113 dnl alignment boundary".
1114 dnl 4273 "floating-point equality and inequality comparisons may be
1115 dnl inappropriate due to roundoff common in floating-point computation"
1116 dnl No obvious workaround for when you really do want == or !=.
1117 dnl 4285 "operator= does not have a check for the source and destination
1118 dnl addresses being non-identical" - fires for AutoPtr which
1119 dnl includes such a check indirectly (internaltest's autoptr1 check this).
1120 dnl 20201 "Memory leak is detected" which triggers for "return new Foo;"!
1121 AM_CXXFLAGS="$AM_CXXFLAGS +w +wlint +W2340,2401,3348,4255,4273,4285,20201" ;;
1123 dnl Sun's C++ compiler warns about functions failing to return a value even
1124 dnl when the function ends with a "throw" statement. That's just unhelpful
1125 dnl noise, and adding a dummy "return" after "throw" seems a worse solution
1126 dnl than simply disabling this warning - any genuinely missing return
1127 dnl statements will get reported by compilers with superior warning
1129 XAPIAN_TEST_CXXFLAGS([-erroff=voidretw], [AM_CXXFLAGS])
1134 XAPIAN_TEST_LINKER_FLAG([-Bsymbolic-functions], [symbolic_functions],
1135 [XAPIAN_LDFLAGS="$XAPIAN_LDFLAGS $flag"])
1137 FP_EXCESS_PRECISION=no
1138 AC_MSG_CHECKING([whether to use SSE instructions on x86])
1141 if test "$enable_sse" = no ; then
1143 FP_EXCESS_PRECISION=yes
1145 dnl Default to sse2.
1146 test "$enable_sse" != yes || enable_sse=sse2
1147 if test yes = "$GXX"; then
1148 AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1149 dnl We can unconditionally use -mtune=generic as it was added in GCC
1150 dnl 4.2, and supported at least as far back as clang 3.0.
1151 AM_CXXFLAGS="$AM_CXXFLAGS -mfpmath=sse -m$enable_sse -mtune=generic"
1153 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1154 [[#ifndef __SUNPRO_CC
1155 #error Not Sun compiler
1157 [AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1158 AM_CXXFLAGS="$AM_CXXFLAGS -xarch=$enable_sse"]
1160 [AC_MSG_RESULT([don't know how to for compiler $CXX])]
1166 AC_MSG_RESULT([non-x86 arch ($host_cpu)]) ;;
1168 AC_SUBST([FP_EXCESS_PRECISION])
1171 [/* Disable stupid MSVC "performance" warning for converting int to bool. */
1173 # pragma warning(disable:4800)
1176 /* _FORTIFY_SOURCE is only supported by GCC >= 4.1 and glibc >= 2.3.4, but it
1177 * shouldn't cause a problem to define it where it's not supported and some
1178 * distros may have backported support, so hardcoding version checks is
1179 * counter-productive.
1181 * Check if _FORTIFY_SOURCE is already defined to allow the user to override
1182 * our choice with "./configure CPPFLAGS=-D_FORTIFY_SOURCE=0" or "...=1".
1184 #if defined __GNUC__ && !defined _FORTIFY_SOURCE
1185 # define _FORTIFY_SOURCE 2
1188 /* For GCC >= 3.0 (and Intel's C++ compiler, which also defines __GNUC__),
1189 * we can use __builtin_expect to give the compiler hints about branch
1190 * prediction. See HACKING for how to use these.
1192 #if defined __GNUC__
1193 /* The arguments of __builtin_expect() are both long, so use !! to ensure that
1194 * the first argument is always an integer expression, and always 0 or 1, but
1195 * still has the same truth value for the if or while it is used in.
1197 # define rare(COND) __builtin_expect(!!(COND), 0)
1198 # define usual(COND) __builtin_expect(!!(COND), 1)
1200 # define rare(COND) (COND)
1201 # define usual(COND) (COND)
1204 /* Signal we're building the library so it's OK to include headers such as
1205 * xapian/query.h directly.
1207 #define XAPIAN_LIB_BUILD 1
1209 /* With Sun CC 5.13 (Studio 12.4) on Solaris 11.2, <math.h> seems to get
1210 * implicitly included somehow before <cmath>, and compilation fails due
1211 * to 'std::exception' colliding with 'struct exception'. It's not clear
1212 * how to avoid this, so just define the making macro which <cmath> does
1213 * before it includes <math.h>.
1216 # define __MATHERR_RENAME_EXCEPTION
1220 AC_SUBST([AM_CXXFLAGS])
1222 dnl Restore CXXFLAGS to those the user specified or autoconf defaulted to.
1223 CXXFLAGS=$save_CXXFLAGS
1225 dnl Enable large file support if possible.
1227 dnl With xlC on AIX, -D_LARGE_FILES changes the ABI of std::string, so it
1228 dnl also needs to be used when compiling user code.
1229 abi_affecting_cxxflags=
1230 if $GREP '^#define _LARGE_FILES 1$' confdefs.h > /dev/null 2>&1 ; then
1231 abi_affecting_cxxflags=-D_LARGE_FILES
1233 AC_SUBST([abi_affecting_cxxflags])
1235 dnl Required for auto regeneration to work in a combined maintainer-mode tree.
1236 : ${AUTOM4TE=autom4te}
1237 AC_SUBST([AUTOM4TE])
1239 dnl Libtool sets this (to yes|no|unknown) and we use it in xapian-config.
1240 AC_SUBST([link_all_deplibs_CXX])
1242 dnl Shared library extension.
1244 eval "SHLIBEXT=$shrext_cmds"
1245 AC_SUBST([SHLIBEXT])
1247 dnl We want to be able to use GNU make % pattern rules in maintainer targets
1248 dnl but automake warns these aren't portable, so we substitute the % to avoid
1253 dnl Split up the version number into "MAJOR.MINOR.REVISION".
1254 MAJOR_VERSION=`echo "$VERSION"|sed 's/\..*//'`
1255 [MINOR_VERSION=`echo "$VERSION"|sed 's/[^.]*\.//;s/\..*//'`]
1256 [REVISION=`echo "$VERSION"|sed 's/.*\.//;s/_.*$//'`]
1258 dnl **************************
1259 dnl * Build the output files *
1260 dnl **************************
1266 docs/doxygen_api.conf
1267 docs/doxygen_source.conf
1269 cmake/xapian-config.cmake
1270 cmake/xapian-config-version.cmake
1271 pkgconfig/xapian-core"$LIBRARY_VERSION_SUFFIX".pc:pkgconfig/xapian-core.pc.in
1273 AC_CONFIG_FILES([tests/runtest], [chmod +x tests/runtest])
1274 AC_CONFIG_FILES([tests/runsrv], [chmod +x tests/runsrv])
1275 AC_CONFIG_FILES([tests/submitperftest], [chmod +x tests/submitperftest])
1276 AC_CONFIG_FILES([tests/perftest/get_machine_info], [chmod +x tests/perftest/get_machine_info])
1277 AC_CONFIG_FILES([xapian-config], [chmod +x xapian-config])
1278 AC_CONFIG_FILES([makemanpage], [chmod +x makemanpage])
1281 dnl There are no files generated by AC_OUTPUT in the following directories
1282 dnl and we need to ensure they exist so that the rest of configure or make
1283 dnl won't fail because they don't exist when srcdir != builddir.
1284 if test yes = "$vpath_build" ; then
1285 for dir in include/xapian languages queryparser ; do
1286 AS_MKDIR_P(["$dir"])
1290 dnl Generate include/xapian/version.h:
1292 dnl MAIN_VERSION is VERSION without any _git123 suffix.
1293 MAIN_VERSION="$MAJOR_VERSION.$MINOR_VERSION.$REVISION"
1295 for backend in CHERT GLASS INMEMORY REMOTE ; do
1296 val=`eval echo "\\\$BUILD_BACKEND_${backend}_TRUE"`
1297 if test -z "$val" ; then
1298 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_HAS_${backend}_BACKEND"
1302 if test yes = "$enable_64bit_docid" ; then
1303 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE=\"$INT64_T\""
1305 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE=\"$INT32_T\""
1308 if test yes = "$enable_64bit_termcount" ; then
1309 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE=\"$INT64_T\""
1311 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE=\"$INT32_T\""
1314 dnl For GCC (and compilers which pretend to be GCC) and MSVC, we create some
1315 dnl ABI checks in the generated version.h, and $CXXFLAGS may contain options
1316 dnl which affect the ABI (e.g. -fabi-version for GCC) so we want to use these
1317 dnl options when generating version.h. For these compilers, CXXCPP="$CXX -E"
1318 dnl so it should understand all compiler options.
1320 dnl For other compilers, we only pass $CPPFLAGS to $CXXCPP in case it's an
1321 dnl external cpp which doesn't understand flags which might be in $CXXFLAGS.
1322 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef __GNUC__
1328 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS $CXXFLAGS"],
1329 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS"])
1330 rm -f include/xapian/version.h.tmp
1331 dnl "\r" in sed is a GNUism, but we only need to remove it on MS Windows
1332 dnl where we'll always have GNU sed, and other sed's will just interpret
1333 dnl it as "r" (Solaris sed) or maybe literal "\r" which won't match.
1335 dnl Use @@ around $MAIN_VERSION so we get " in the final output.
1336 $CXXCPP $cxxcpp_flags\
1337 -DSTRING_VERSION="\"@@$MAIN_VERSION@@\""\
1338 -DMAJOR_VERSION="\"$MAJOR_VERSION\""\
1339 -DMINOR_VERSION="\"$MINOR_VERSION\""\
1340 -DREVISION="\"$REVISION\""\
1342 $srcdir/include/xapian/version_h.cc|\
1343 ${SED-sed} '/"/!d;s/^ *//;/^#/d;s/ *$//;s/" *,//;s/"//g;s/@@/"/g;s/ */ /g;s/ *,\r$//;s/ *,$//'\
1344 > include/xapian/version.h.tmp
1345 dnl Only update the file if it has changed, so we don't alter the timestamp
1346 dnl and cause lots of rebuilding needlessly. However, the build system
1347 dnl needs a timestamp to know when to regenerate version.h because version_h.cc
1348 dnl has changed so we use a separate timestamp file.
1349 touch include/xapian/version.h.timestamp
1350 if cmp include/xapian/version.h.tmp include/xapian/version.h >/dev/null 2>&1
1352 rm include/xapian/version.h.tmp
1354 mv include/xapian/version.h.tmp include/xapian/version.h