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.
240 dnl Enable large file support if possible.
242 dnl With xlC on AIX, -D_LARGE_FILES changes the ABI of std::string, so it
243 dnl also needs to be used when compiling user code.
244 abi_affecting_cxxflags=
245 if $GREP '^#define _LARGE_FILES 1$' confdefs.h > /dev/null 2>&1 ; then
246 abi_affecting_cxxflags=-D_LARGE_FILES
248 AC_SUBST([abi_affecting_cxxflags])
252 AC_SUBST([XAPIAN_LDFLAGS])
253 AC_SUBST([XAPIAN_LIBS])
255 AC_DEFUN([XAPIAN_TEST_LINKER_FLAG],
257 AC_MSG_CHECKING([for $CXX -Wl,$1])
258 AC_CACHE_VAL([xo_cv_$2],
261 dnl The option in $1 will start with a dash so needs protecting. We can't
262 dnl use -e as Solaris /usr/bin/grep doesn't support that, so prepend an
263 dnl empty group instead.
264 if $CXX -Wl,$1 >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD|grep '\(\)'$1 >/dev/null 2>&1; then
265 dnl The error message contains the flag name - it must be a
266 dnl complaint that the option is unrecognized (doing it this
267 dnl way allows it to work regardless of the i18n in use):
268 dnl ld: unrecognized option '--enable-runtime-pseudo-reloc'
276 AC_MSG_RESULT([$xo_cv_$2])
279 dnl Test if the compiler works with $1 added to CXXFLAGS; if it does, add $1 to
280 dnl variable $2. If the test passes, also do $3; if it fails, also do $4.
281 AC_DEFUN([XAPIAN_TEST_CXXFLAGS],
283 XTC_save_CXXFLAGS=$CXXFLAGS
284 CXXFLAGS="$CXXFLAGS $1"
285 AC_TRY_COMPILE([], [],
287 CXXFLAGS=$XTC_save_CXXFLAGS
289 [CXXFLAGS=$XTC_save_CXXFLAGS
294 if test yesyes = "$GXX$enable_shared" ; then
297 XAPIAN_TEST_LINKER_FLAG([--enable-runtime-pseudo-reloc], [enable_runtime_pseudo_reloc],
298 [ldflags="-Wl,$flag"],
300 dnl Can't use AC_DISABLE_SHARED after AC_PROG_LIBTOOL, but
301 dnl this test needs to be after AC_PROG_LIBTOOL, so we can't
302 dnl just disable the shared build automatically...
303 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])
308 dnl Only works for ldflags which can be specified anywhere on the link line.
311 dnl Preserve the default CXXFLAGS.
312 save_CXXFLAGS=$CXXFLAGS
314 dnl x86 has excess precision issues with 387 FP instructions, which are
315 dnl avoided by using SSE instructions instead. This is also faster (~6% in
316 dnl a CPU bound testcase).
318 [AS_HELP_STRING([--disable-sse],
319 [disable use of SSE FP instructions on x86])]
320 [AS_HELP_STRING([[--enable-sse[=sse|sse2]]],
321 [set which SSE FP instructions to use on x86 (default: sse2)])],
322 [case ${enableval} in
324 *) AC_MSG_ERROR([bad value ${enableval} for --enable-sse or --disable-sse]) ;;
328 dnl Some versions of Sun's C++ compiler reportedly need an explicit -lm.
329 dnl The maths functions we use include: exp log ceil fabs sqrt
330 AC_MSG_CHECKING([if -lm is required for maths functions])
331 dnl Don't use constant arguments as the compiler might simply evaluate the
332 dnl whole expression at compile time, and it might inline certain functions
333 dnl so test several functions. Also write results using printf() so that
334 dnl the compiler can't optimise away the computations.
335 AC_TRY_LINK([#ifdef __SUNPRO_CC
336 #error Need -lm for Sun C++ 5.9 under libtool 2.2.10
341 using namespace std;], [
342 double a = log(ceil(time(NULL)/7.0));
343 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));
344 ], [AC_MSG_RESULT([no])], [
346 AC_TRY_LINK([#include <cmath>
349 using namespace std;], [
350 double a = log(ceil(time(NULL)/7.0));
351 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));],
352 [AC_MSG_RESULT([yes])],
353 [AC_MSG_ERROR([Failed to link a C++ program using <cmath>])
357 dnl C++11 should have log2(), but keep this check for now to allow for
358 dnl compilers with incomplete library support for C++11.
359 AC_CHECK_DECLS([log2], [], [], [#include <cmath>])
361 dnl See if <typeinfo> can be used in the testsuite - at least for GCC and xlC,
362 dnl compilation of the test code below fails if RTTI isn't being generated
363 dnl (g++ -fno-rtti, or by default with xlC).
364 AC_MSG_CHECKING([if RTTI is supported])
365 save_CXXFLAGS=$CXXFLAGS
366 dnl xlC issues a warning for typeid() being used without RTTI being enabled,
367 dnl so for this test we pass the xlC option to make that warning into an error.
368 XAPIAN_TEST_CXXFLAGS([-qhaltonmsg=1540-2412], [CXXFLAGS])
371 #include <typeinfo>],
376 } catch (std::exception & e) {
377 return typeid(e).name()[0];
380 AC_DEFINE([USE_RTTI], [1], [Define if the testsuite can use RTTI]),
382 CXXFLAGS=$save_CXXFLAGS
384 dnl Check for time functions.
385 AC_CHECK_FUNCS([clock_gettime sleep nanosleep gettimeofday ftime])
389 dnl For _ftime64() on mingw we need to tell it we're happy to require
390 dnl MSVCRT 6.10 or higher, which isn't too onerous a requirement it seems.
391 AC_DEFINE([__MSVCRT_VERSION__], [0x0601], [Define on mingw to the minimum msvcrt version to assume])
392 AC_DEFINE([MINGW_HAS_SECURE_API], [1], [Define on mingw to get _s suffixed "secure" functions declared in headers])
396 dnl We use timer_create() if available to implement a search time limit.
398 AC_SEARCH_LIBS([timer_create], [rt],
399 [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"
400 AC_DEFINE([HAVE_TIMER_CREATE], [1], [Define to 1 if you have the 'timer_create' function.])])
403 dnl Used by tests/soaktest/soaktest.cc
404 AC_CHECK_FUNCS([srandom random])
406 dnl Used by tests/harness/testsuite.cc
407 AC_CHECK_FUNCS([sigaction])
408 AC_MSG_CHECKING([for sigsetjmp and siglongjmp])
409 AC_TRY_COMPILE([#include <setjmp.h>],
410 [sigjmp_buf jb; if (sigsetjmp(jb, 1)) { siglongjmp(jb, 1); }],
411 AC_DEFINE([HAVE_SIGSETJMP], [1], [Define to 1 if you have the 'sigsetjmp' function])
412 AC_MSG_RESULT([yes]),
415 dnl Used by tests/harness/cputimer.cc:
416 AC_CHECK_FUNCS([getrusage times sysconf])
418 dnl Used by tests/api_replicate.cc, tests/queryparsertest.cc and
419 dnl tests/termgentest.cc.
421 dnl Solaris < 10 only has putenv().
423 dnl Microsoft have marked putenv() as deprecated, so we use _putenv_s() under
424 dnl MSVC to avoid deprecation warnings. We probe here since mingw doesn't
425 dnl currently (v3.20) provide _putenv_s(), so we can't just use it conditional
426 dnl on __WIN32__ being defined.
427 AC_CHECK_FUNCS([setenv _putenv_s])
429 dnl Check for a more efficient way of closing fds during daemonisation.
430 dnl Apparently closefrom() is available on at least "Solaris 9 or later, NetBSD
431 dnl 3.0 or later, OpenBSD 3.5 or later". If we don't have closefrom(), then
432 dnl dirfd() and getrlimit are useful for an efficient implementation on some
434 AC_CHECK_FUNCS([closefrom dirfd getrlimit])
436 dnl See if ftime returns void (as it does on mingw)
437 AC_MSG_CHECKING([return type of ftime])
438 if test $ac_cv_func_ftime = yes ; then
439 AC_TRY_COMPILE([#include <sys/timeb.h>],
440 [struct timeb tp; int i = ftime(&tp);],
441 AC_MSG_RESULT([int]),
442 AC_MSG_RESULT([void])
443 AC_DEFINE([FTIME_RETURNS_VOID], [1], [Define if ftime returns void]))
446 dnl Check how to find the hostname: uname() in sys/utsname.h, or gethostname()
447 dnl Don't use default includes as inttypes.h is found by Compaq C but not C++
448 dnl so it causes all header probes to fail.
449 AC_CHECK_HEADERS([sys/utsname.h], [], [], [ ])
450 AC_CHECK_FUNCS([gethostname])
452 dnl mingw (for instance) lacks ssize_t
459 AC_CHECK_SIZEOF([short])
460 AC_CHECK_SIZEOF([int])
461 AC_CHECK_SIZEOF([long])
462 AC_CHECK_SIZEOF([long long])
464 AC_CHECK_HEADERS([sys/types.h])
465 AC_CHECK_SIZEOF([off_t])
467 AC_MSG_CHECKING([for 32 bit integer type])
469 "$ac_cv_sizeof_int") INT32_T=int ;;
470 "$ac_cv_sizeof_long") INT32_T=long ;;
471 "$ac_cv_sizeof_short") INT32_T=short ;;
473 AC_MSG_RESULT([none found])
474 AC_MSG_ERROR([No 32 bit integer type found])
476 AC_MSG_RESULT([$INT32_T])
478 AC_MSG_CHECKING([for 64 bit integer type])
480 "$ac_cv_sizeof_int") INT64_T=int ;;
481 "$ac_cv_sizeof_long") INT64_T=long ;;
482 "$ac_cv_sizeof_long_long") INT64_T='long long' ;;
484 AC_MSG_RESULT([none found])
485 AC_MSG_ERROR([No 64 bit integer type found])
487 AC_MSG_RESULT([$INT64_T])
489 dnl Used to avoid undefined behaviour left shifting file sizes.
490 AC_MSG_CHECKING([for unsigned equivalent of off_t])
491 case $ac_cv_sizeof_off_t in
492 "$ac_cv_sizeof_int") UNSIGNED_OFF_T=unsigned ;;
493 "$ac_cv_sizeof_long") UNSIGNED_OFF_T='unsigned long' ;;
494 "$ac_cv_sizeof_long_long") UNSIGNED_OFF_T='unsigned long long' ;;
496 AC_MSG_RESULT([none found])
497 AC_MSG_ERROR([No unsigned type equivalent to off_t found])
499 AC_DEFINE_UNQUOTED([UNSIGNED_OFF_T], [$UNSIGNED_OFF_T], [Define to an unsigned type equivalent to off_t])
500 AC_MSG_RESULT([$UNSIGNED_OFF_T])
502 dnl Check for perl (needed to generate some sources and documentation).
503 AC_PATH_PROG([PERL], [perl], [])
504 if test x$USE_MAINTAINER_MODE = xyes; then
505 test -z "$PERL" && AC_MSG_ERROR([perl is required in maintainer mode])
508 AC_ARG_ENABLE([64bit_docid],
509 [AS_HELP_STRING([--enable-64bit-docid], [enable 64bit docid [default=no]])],
510 [case ${enableval} in
512 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-docid]) ;;
514 [enable_64bit_docid=no])
516 AC_ARG_ENABLE([64bit_termcount],
517 [AS_HELP_STRING([--enable-64bit-termcount], [enable 64bit termcount [default=no]])],
518 [case ${enableval} in
520 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-termcount]) ;;
522 [enable_64bit_termcount=no])
524 AC_ARG_ENABLE([documentation],
525 [AS_HELP_STRING([--enable-documentation], [enable make rules to rebuild documentation [default=maintainer-mode]])],
526 [case ${enableval} in
528 *) AC_MSG_ERROR([bad value ${enableval} for --enable-documentation]) ;;
530 [enable_documentation=$USE_MAINTAINER_MODE])
531 AM_CONDITIONAL([DOCUMENTATION_RULES], [test x"$enable_documentation" = xyes])
532 AM_CONDITIONAL([MAINTAINER_NO_DOCS], [test x"$USE_MAINTAINER_MODE$enable_documentation" = xyesno])
534 if test x"$enable_documentation" = xyes ; then
535 dnl Checks for dot. (Diagrams in the documentation)
536 AC_PATH_PROG([DOT], [dot])
537 test -z "$DOT" && AC_MSG_ERROR([dot (part of the graphviz package) is required to build documentation])
538 DOXYGEN_DOT_PATH=`echo "$DOT" | sed 's!/dot$!!'`
539 AC_SUBST([DOXYGEN_DOT_PATH])
541 dnl Check for doxygen. (Needed to make some more of the documentation)
542 AC_PATH_PROG([DOXYGEN], [doxygen], [])
543 test -z "$DOXYGEN" && AC_MSG_ERROR([doxygen is required to build documentation])
545 dnl Check for help2man. (Needed to make man pages from "--help" output).
546 AC_PATH_PROG([HELP2MAN], [help2man], [])
547 test -z "$HELP2MAN" && AC_MSG_ERROR([help2man is required to build documentation])
549 dnl Check for rst2html. (Needed to make HTML from reStructuredText format)
550 dnl Also look for rst2html.py, which archlinux reportedly installs it as.
551 AC_PATH_PROGS([RST2HTML], [rst2html rst2html.py], [])
552 test -z "$RST2HTML" && AC_MSG_ERROR([rst2html is required to build documentation (try package python-docutils)])
554 dnl Check for pngcrush, which we optionally use to reduce the size of the
555 dnl PNG files which doxygen generates. We can get by without it, so don't
556 dnl fail here if it's not found.
557 AC_PATH_PROG([PNGCRUSH], [pngcrush], [])
560 dnl Check whether we need -ldl for dlsym() etc.
561 dnl No longer used...
562 dnl AC_TRY_LINK_FUNC([dlsym], ,
563 dnl [AC_CHECK_LIB([dl], [dlsym], [DL_LIBS="-ldl"])])
564 dnl AC_SUBST([DL_LIBS])
566 dnl Checks for header files.
567 AC_CHECK_HEADERS([fcntl.h limits.h sys/errno.h sys/select.h], [], [], [ ])
568 AC_CHECK_HEADERS([sys/resource.h],
569 [], [], [#include <sys/types.h>])
571 dnl If valgrind is installed and new enough, we use it for leak checking in the
572 dnl testsuite. If VALGRIND is set to an empty value, then skip the check and
573 dnl don't use valgrind.
574 if test -n "${VALGRIND-unset}" ; then
575 AC_PATH_PROG([VALGRIND], [valgrind], [])
576 if test -n "$VALGRIND" ; then
577 dnl Check that the installed valgrind version works, and supports the
578 dnl options we use. This means we won't try to use valgrind < 3.3.0
579 dnl (released 7/12/2007) since before that --log-file didn't expand
580 dnl %p (and appended the process id).
582 dnl No need to check for VALGRIND_COUNT_LEAKS now - that was added before
584 AC_MSG_CHECKING([if valgrind supports --log-file with %p])
585 vglog=config.vglog.%p.tmp
586 vglogwild="config.vglog.*.tmp*"
588 if $VALGRIND --log-file="$vglog" -q true 2>&AS_MESSAGE_LOG_FD ; then
589 for f in $vglogwild ; do
591 $vglog*) VALGRIND= ;;
594 if test x"$VALGRIND" = x ; then
598 AC_CHECK_HEADERS([valgrind/memcheck.h], [], [VALGRIND=], [ ])
601 dnl The valgrind detected doesn't seem to work! Perhaps this is an
602 dnl x86_64 box with a 32 bit valgrind.
603 AC_MSG_RESULT([$VALGRIND doesn't work])
610 if test -n "$VALGRIND" ; then
611 AC_DEFINE([HAVE_VALGRIND], [1], [Define if a suitable valgrind is installed])
614 dnl If eatmydata is installed, we run the testsuite under it to speed it up.
615 dnl If EATMYDATA is set to an empty value, then skip this check and don't use
617 if test -n "${EATMYDATA-unset}" ; then
618 AC_PATH_PROG([EATMYDATA], [eatmydata], [])
621 dnl Checks for library functions.
624 AC_CHECK_DECLS([sys_errlist, _sys_errlist, sys_nerr, _sys_nerr])
626 dnl Check that snprintf actually works as it's meant to.
628 dnl Linux 'man snprintf' warns:
629 dnl Linux libc4.[45] does not have a snprintf, but provides a libbsd that
630 dnl contains an snprintf equivalent to sprintf, i.e., one that ignores the
631 dnl size argument. Thus, the use of snprintf with early libc4 leads to
632 dnl serious security problems.
634 dnl It also warns that glibc < 2.0.6 (and presumably other pre-C90
635 dnl implementations) return -1 when truncating so check that we get the
636 dnl ISO C90 semantics for the returned length when truncating. If we
637 dnl have a working snprintf but with non-ISO return semantics, handle
638 dnl that case separately as it may still be useful in many cases.
640 dnl mingw has _snprintf so check for that too.
641 AC_MSG_CHECKING([for working ISO C90 conforming snprintf])
642 ac_cv_func_snprintf_noniso=no
643 for func in snprintf _snprintf ; do
651 dnl Return different exit status for each error so we can see which
652 dnl check failed by consulting config.log.
654 char buffer[4] = "abc";
655 int res1 = $func(buffer, 2, "%s", "XYZ");
656 if (memcmp(buffer, "X\0c", 4) != 0) return 2;
657 int res2 = $func(buffer, 2, "%x", 0x12);
658 if (memcmp(buffer, "1\0c", 4) != 0) return 3;
659 if (res1 == -1 && res2 == -1) return 15; /* Pre-ISO semantics. */
660 if (res1 != 3) return 4;
661 if (res2 != 2) return 5;
664 [ac_cv_func_snprintf=$func;break],
666 if test 15no = "$?$ac_cv_func_snprintf_noniso" ; then
667 ac_cv_func_snprintf_noniso=$func
669 ac_cv_func_snprintf=no
671 [ac_cv_func_snprintf=unknown;break]
674 AC_MSG_RESULT([$ac_cv_func_snprintf])
675 case $ac_cv_func_snprintf in
677 AC_MSG_CHECKING([for working non-ISO C90 conforming snprintf])
678 AC_MSG_RESULT([$ac_cv_func_snprintf_noniso])
679 if test no != "$ac_cv_func_snprintf_noniso" ; then
680 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf_noniso],
681 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
685 dnl be conservative when crosscompiling
688 AC_DEFINE_UNQUOTED([SNPRINTF_ISO], [$ac_cv_func_snprintf],
689 [Define to the name of a function implementing snprintf with ISO C99 semantics (if one exists)])
690 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf],
691 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
695 dnl ***************************
696 dnl * Select modules to build *
697 dnl ***************************
699 dnl Check which database backends should be built.
701 AC_DEFUN([XAPIAN_BACKEND_ENABLE],
702 [AC_ARG_ENABLE([backend_$1],
703 [AS_HELP_STRING([--enable-backend-$1], [build the $1 database backend [default=yes]])],
706 *) AC_MSG_ERROR([Invalid option: '--enable-backend-$1=$enableval']) ;;
707 esac], [enable_backend_$1=yes])
710 dnl When adding a new backend, update INSTALL too.
711 XAPIAN_BACKEND_ENABLE([chert])
712 XAPIAN_BACKEND_ENABLE([glass])
713 XAPIAN_BACKEND_ENABLE([inmemory])
714 XAPIAN_BACKEND_ENABLE([remote])
717 case $enable_backend_chert$enable_backend_glass in
719 dnl We use zlib for compressing tags in chert/glass. We could
720 dnl automatically disable support if zlib isn't found, but overall that
721 dnl probably does more harm than good - it's most likely that someone just
722 dnl forgot to install the -dev package for zlib.
724 dnl Similarly for uuid support.
726 dnl Check for zlib.h.
727 AC_CHECK_HEADERS([zlib.h], [], [
728 AC_MSG_ERROR([zlib.h not found - required for chert and glass (you may need to install the zlib1g-dev or zlib-devel package)])
731 dnl Check for zlibVersion in -lz.
733 dnl mingw build needs -lzlib or -lzdll.
734 AC_SEARCH_LIBS([zlibVersion], [z zlib zdll], [], [
735 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)])
737 if test x != x"$LIBS" ; then
738 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
742 dnl Find the UUID library (from e2fsprogs/util-linux-ng, not the OSSP one).
745 *mingw* | *cygwin*) dnl Use built-in API.
749 dnl Check for uuid/uuid.h (e2fsprogs/util-linux-ng) or uuid.h
750 dnl (FreeBSD/NetBSD).
751 AC_CHECK_HEADERS([uuid/uuid.h], [
752 dnl util-linux-ng's uuid/uuid.h found - check for uuid_generate in
755 AC_SEARCH_LIBS([uuid_generate], [uuid], [], [
756 AC_MSG_ERROR([uuid_generate() not found in -luuid - required for chert and glass (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
758 if test x != x"$LIBS" ; then
759 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
762 dnl Try uuid.h as found on FreeBSD/NetBSD, with associated code in libc.
763 AC_CHECK_HEADERS([uuid.h], [
764 dnl Check for uuid_create with no extra libraries required.
765 AC_CHECK_FUNC([uuid_create], [], [
766 AC_MSG_ERROR([uuid.h found, but uuid_create() not found. You probably wants to install libuuid from util-linux-ng or e2fsprogs (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
769 AC_MSG_ERROR([Neither uuid/uuid.h nor uuid.h found - required for chert and glass (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
775 dnl Older versions of libuuid (such as that on CentOS 4.7) don't have
776 dnl uuid_unparse_lower(), only uuid_unparse().
777 AC_LINK_IFELSE([AC_LANG_CALL([], [uuid_unparse_lower])],
779 AC_DEFINE([HAVE_UUID_UNPARSE_LOWER], [1],
780 [Define to 1 if you have the 'uuid_unparse_lower' function.])
785 AM_CONDITIONAL([USE_WIN32_UUID_API], [test "$use_win32_uuid_api" = 1])
788 if test "$enable_backend_remote" = yes ; then
789 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
793 ]])], [win32=no], [win32=yes])
795 case $host_os-$win32 in
797 dnl For mingw and msvc we have an alternative implementation which
798 dnl doesn't need fork() or socketpair().
800 dnl We need -lws2_32 for getaddrinfo(), etc.
802 dnl Vista is needed for the AI_ADDRCONFIG flag to getaddrinfo().
803 AC_DEFINE([WINVER], [0x600],
804 [Version of Windows to assume (0x600 => Vista).])
805 AC_DEFINE([_WIN32_WINNT], [WINVER],
806 [Version of Windows to assume.])
809 dnl DJGPP has a dummy implementation of fork which always fails.
811 dnl For disk-based backend, use flock() for locking, which doesn't need
812 dnl fork() or socketpair().
813 AC_DEFINE([FLINTLOCK_USE_FLOCK], 1, [Define to use flock() for flint-compatible locking])
814 dnl If someone actually wanted remote backend support, then DJGPP has a
815 dnl pthreads port, so using threads like we do on Windows would make more
817 enable_backend_remote=no
820 dnl On Unix, we need fork and socketpair for the remotebackend.
822 AC_CHECK_FUNCS([fork], [], [
823 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.)])
825 dnl Check if -lsocket is required for socketpair (Solaris needs it).
826 dnl And on Haiku it's in -lnetwork.
827 AC_SEARCH_LIBS([socketpair], [socket network], [], [
828 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.)])
830 AC_DEFINE([HAVE_SOCKETPAIR], [1],
831 [Define to 1 if you have the 'socketpair' function.])
832 dnl Check if extra libraries are needed for getaddrinfo or inet_ntop()
833 dnl (e.g. on Solaris).
835 dnl We're currently assuming that any system that is worth trying to
836 dnl support has getaddrinfo() and inet_ntop(), since these are the
837 dnl standard route for supporting IPv6, and that's pretty much essential
838 dnl for platforms to support now.
839 AC_SEARCH_LIBS([getaddrinfo], [nsl socket], [], [
840 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.)])
842 AC_SEARCH_LIBS([inet_ntop], [nsl socket], [], [
843 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.)])
850 if test "$enable_backend_remote" = yes ; then
852 XAPIAN_LIBS="$XAPIAN_LIBS $REMOTE_LIBS"
856 AC_ARG_ENABLE([visibility],
857 [AS_HELP_STRING([--disable-visibility], [disable use of GCC visibility])],
858 [case ${enableval} in
860 *) AC_MSG_ERROR([bad value ${enableval} for --disable-visibility]) ;;
864 if test "`pwd`" != "`cd $srcdir;pwd`" ; then
867 AM_CONDITIONAL([VPATH_BUILD], [test yes = "$vpath_build"])
869 dnl Turn off compilation of anything that we don't have the requirements for
871 dnl Set conditionals to specify what we compile
873 AM_CONDITIONAL([BUILD_BACKEND_CHERT], [test yes = "$enable_backend_chert"])
874 AM_CONDITIONAL([BUILD_BACKEND_GLASS], [test yes = "$enable_backend_glass"])
875 AM_CONDITIONAL([BUILD_BACKEND_INMEMORY], [test yes = "$enable_backend_inmemory"])
876 AM_CONDITIONAL([BUILD_BACKEND_REMOTE], [test yes = "$enable_backend_remote"])
877 AM_CONDITIONAL([BUILD_BACKEND_CHERT_OR_GLASS],
878 [test nono != "$enable_backend_chert$enable_backend_glass"])
880 dnl Used to decide if we should use the zlib-vg.so LD_PRELOAD hack.
882 if test -n "$VALGRIND" ; then
884 linux*) use_zlib_vg=yes ;;
887 AM_CONDITIONAL([USE_ZLIB_VG], [test yes = "$use_zlib_vg"])
889 dnl See if we have fdatasync, and what libraries are needed for it.
890 dnl We need to actually check for a declaration as OS X has a dummy
891 dnl implementation in the library which is not prototyped in any header.
892 AC_CHECK_DECL([fdatasync(int)], [
894 AC_SEARCH_LIBS([fdatasync], [rt], [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"])
896 AC_CHECK_FUNCS([fdatasync])
898 [ac_cv_func_fdatasync=no],
899 [#include <unistd.h>]
902 AC_CHECK_FUNCS([fsync])
903 AC_CHECK_FUNCS([posix_fadvise])
904 AC_CHECK_FUNCS([ftruncate])
906 dnl HP-UX has pread and pwrite, but they don't work! Apparently this problem
907 dnl manifests when largefile support is enabled, and we definitely want that
908 dnl so don't use pread or pwrite on HP-UX.
911 AC_MSG_CHECKING([for pread])
912 AC_MSG_RESULT([present but broken on $host_os])
913 AC_MSG_CHECKING([for pwrite])
914 AC_MSG_RESULT([present but broken on $host_os])
917 AC_CHECK_FUNC([pread],
918 [AC_DEFINE([HAVE_PREAD], [1],
919 [Define if pread is available on this system])
920 AC_MSG_CHECKING([for any prototype needed for pread])
921 AC_CACHE_VAL([xo_cv_pread_prototype],
924 'extern "C" ssize_t pread(int, void *, size_t, off_t) throw ();' \
925 'extern "C" ssize_t pread(int, void *, size_t, off_t);' ; do
927 #include <sys/types.h>
932 pread(1, b, 256, 20);
934 xo_cv_pread_prototype="$p"
938 if test -z "$xo_cv_pread_prototype"; then
939 AC_MSG_RESULT([not found])
940 AC_MSG_ERROR([Failed to find working prototype for pread])
943 if test " " = "$xo_cv_pread_prototype" ; then
944 AC_MSG_RESULT([none required])
946 AC_MSG_RESULT([$xo_cv_pread_prototype])
947 AC_DEFINE_UNQUOTED([PREAD_PROTOTYPE], [$xo_cv_pread_prototype],
948 [explicit prototype needed for pread (if any)])
951 AC_CHECK_FUNC([pwrite],
952 [AC_DEFINE([HAVE_PWRITE], [1],
953 [Define if pwrite is available on this system])
954 AC_MSG_CHECKING([for any prototype needed for pwrite])
955 AC_CACHE_VAL([xo_cv_pwrite_prototype],
958 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t) throw ();' \
959 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t);' ; do
961 #include <sys/types.h>
965 const char *p = "hello";
968 xo_cv_pwrite_prototype="$p"
972 if test -z "$xo_cv_pwrite_prototype"; then
973 AC_MSG_RESULT([not found])
974 AC_MSG_ERROR([Failed to find working prototype for pwrite])
977 if test " " = "$xo_cv_pwrite_prototype" ; then
978 AC_MSG_RESULT([none required])
980 AC_MSG_RESULT([$xo_cv_pwrite_prototype])
981 AC_DEFINE_UNQUOTED([PWRITE_PROTOTYPE], [$xo_cv_pwrite_prototype],
982 [explicit prototype needed for pwrite (if any)])
988 AC_CHECK_FUNCS([link])
990 dnl *************************
991 dnl * Set debugging options *
992 dnl *************************
994 dnl Which assertion types to enable in the code.
996 AC_ARG_ENABLE([assertions],
997 [AS_HELP_STRING([--enable-assertions], [enable debug assertions (no|partial|yes) [default=no]])],
1001 AC_MSG_ERROR([Invalid option: '--enable-assertions=$enableval']) ;;
1004 AC_ARG_ENABLE([log],
1005 [AS_HELP_STRING([--enable-log], [generate a log of methods called, etc (no|yes|profile) [default=no]])],
1009 AC_MSG_ERROR(['--enable-log=profile' is no longer supported - see http://trac.xapian.org/wiki/ProfilingXapian for alternatives.]) ;;
1011 AC_MSG_ERROR([Invalid option: '--enable-log=$enableval']) ;;
1014 dnl Set defines according to the --enable-assertions and --enable-log options
1017 if test yes = "$enable_assertions" || test partial = "$enable_assertions" ; then
1018 AC_DEFINE([XAPIAN_ASSERTIONS],,
1019 [Define if you want assertions (causes some slow-down)])
1022 if test yes = "$enable_assertions"; then
1023 AC_DEFINE([XAPIAN_ASSERTIONS_PARANOID],,
1024 [Define if you want paranoid assertions (causes significant slow-down)])
1027 if test yes = "$enable_log"; then
1028 AC_DEFINE([XAPIAN_DEBUG_LOG],,
1029 [Define if you want a log of methods called and other debug messages])
1032 dnl ******************************
1033 dnl * Set special compiler flags *
1034 dnl ******************************
1036 dnl Set flags to control warnings (enable more, or disable annoying ones).
1038 if test yes = "$GXX"; then
1039 dnl Intel's C++ compiler and clang both lie and define __GNUC__, so check which
1040 dnl we actually have, as neither is really 100% compatible.
1041 case `echo __INTEL_COMPILER __clang__|$CXX -E - 2>&AS_MESSAGE_LOG_FD|grep -v '^#'` in
1042 *__INTEL_COMPILER*__clang__*)
1043 dnl GCC (since neither substituted):
1045 dnl -Wundef was supported by g++ 3.0 and -fshow-column by g++ 3.1.
1047 dnl -Wlogical-op and -Wmissing-declarations (for C++) were added in
1050 dnl All the other options were supported by g++ 2.95.
1051 AM_CXXFLAGS="$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"
1053 dnl The exact format of g++ --version seems to change with almost every
1054 dnl minor release so use the preprocessor macros which should be more
1056 AC_MSG_CHECKING([for version of $CXX])
1057 gxx_version=`echo __GNUC__.__GNUC_MINOR__.__GNUC_PATCHLEVEL__|$CXX -E -|sed '/^#/d;s/ //g'`
1058 AC_MSG_RESULT([GCC $gxx_version])
1060 case $gxx_version in
1061 [[0123]].*|4.[[0123]].*)
1062 AC_MSG_ERROR([Xapian requires GCC 4.4 or later])
1066 dnl -Wdouble-promotion was added in GCC 4.6.
1068 dnl -Winit-self was added in GCC 3.4, but for GCC < 4.7 g++ always
1069 dnl warns for this case with -Wuninitialized (implied by -W). We
1070 dnl don't intend to use this idiom, so any instances are bugs we'd
1071 dnl like to know about.
1072 AM_CXXFLAGS="$AM_CXXFLAGS -Wdouble-promotion -Winit-self" ;;
1076 dnl -Wconversion in older GCC versions is intended to help migration
1077 dnl from K&R to ISO C, and isn't useful for us. In 4.3 it was renamed
1078 dnl to -Wtraditional-conversion and a new -Wconversion added which
1079 dnl sounds useful but is a bit buggy currently. So we should consider
1080 dnl enabling -Wconversion once it is stabilised (GCC 4.4 or ...)
1082 dnl -Wold-style-cast is interesting, but triggers for macros from
1083 dnl system headers (e.g. FD_SET) (tested with GCC 4.4).
1085 dnl Automatically add -Werror if maintainer mode is enabled.
1086 if test x$USE_MAINTAINER_MODE = xyes; then
1087 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1091 dnl Intel's compiler (since __clang__ not substituted):
1093 dnl -w1 stops the avalanche of uninteresting "remark" messages.
1094 dnl -wd... disables warnings which don't have good code workarounds.
1095 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -w1 -wd177,1572"
1097 dnl Automatically add -Werror if maintainer mode is enabled.
1098 if test x$USE_MAINTAINER_MODE = xyes; then
1099 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1103 dnl clang (since __INTEL_COMPILER not substituted):
1104 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wno-long-long -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual"
1105 AM_CXXFLAGS="$AM_CXXFLAGS -Wshadow -Wstrict-overflow=1 -Winit-self -Wmissing-declarations"
1107 dnl Automatically add -Werror if maintainer mode is enabled.
1108 if test x$USE_MAINTAINER_MODE = xyes; then
1109 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1114 if test no != "$enable_visibility"; then
1115 dnl GCC doesn't support symbol visibility on all platforms (e.g. it isn't
1117 AC_MSG_CHECKING([if $CXX -fvisibility=hidden works])
1118 if echo 'int bar() __attribute__((visibility("default"))); int foo() {return 42;}'|$CXX -Werror -fvisibility=hidden -c -oconftest.o -xc++ - >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
1119 AC_MSG_RESULT([yes])
1120 AM_CXXFLAGS="$AM_CXXFLAGS -fvisibility=hidden"
1121 dash_d_visibility=-DXAPIAN_ENABLE_VISIBILITY
1127 dnl Not GCC, nor a compiler masquerading as GCC.
1130 dnl +w turns on more warnings.
1131 dnl +wlint turns on "lint-like" warnings.
1132 dnl +W<n1>,<n2>,... suppresses warnings n1, n2, ...
1133 dnl 2340 (remark) "value copied to temporary, reference to temporary
1134 dnl use", in: throw Xapian::UnimplementedError("...");
1135 dnl 2401 "destructor for base class ... is non-virtual" (we don't need a
1136 dnl virtual destructor for intrusive_base, since we never delete
1137 dnl its subclasses by a intrusive_base *).
1138 dnl 3348 "declaration hides constant ..." which seems to misfire!
1139 dnl 4255 (remark) "padding size of struct "..." with ... bytes to
1140 dnl alignment boundary".
1141 dnl 4273 "floating-point equality and inequality comparisons may be
1142 dnl inappropriate due to roundoff common in floating-point computation"
1143 dnl No obvious workaround for when you really do want == or !=.
1144 dnl 4285 "operator= does not have a check for the source and destination
1145 dnl addresses being non-identical" - fires for AutoPtr which
1146 dnl includes such a check indirectly (internaltest's autoptr1 check this).
1147 dnl 20201 "Memory leak is detected" which triggers for "return new Foo;"!
1148 AM_CXXFLAGS="$AM_CXXFLAGS +w +wlint +W2340,2401,3348,4255,4273,4285,20201" ;;
1150 dnl Sun's C++ compiler warns about functions failing to return a value even
1151 dnl when the function ends with a "throw" statement. That's just unhelpful
1152 dnl noise, and adding a dummy "return" after "throw" seems a worse solution
1153 dnl than simply disabling this warning - any genuinely missing return
1154 dnl statements will get reported by compilers with superior warning
1156 XAPIAN_TEST_CXXFLAGS([-erroff=voidretw], [AM_CXXFLAGS])
1161 XAPIAN_TEST_LINKER_FLAG([-Bsymbolic-functions], [symbolic_functions],
1162 [XAPIAN_LDFLAGS="$XAPIAN_LDFLAGS $flag"])
1164 FP_EXCESS_PRECISION=no
1165 AC_MSG_CHECKING([whether to use SSE instructions on x86])
1168 if test "$enable_sse" = no ; then
1170 FP_EXCESS_PRECISION=yes
1172 dnl Default to sse2.
1173 test "$enable_sse" != yes || enable_sse=sse2
1174 if test yes = "$GXX"; then
1175 AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1176 dnl We can unconditionally use -mtune=generic as it was added in GCC
1177 dnl 4.2, and supported at least as far back as clang 3.0.
1178 AM_CXXFLAGS="$AM_CXXFLAGS -mfpmath=sse -m$enable_sse -mtune=generic"
1180 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1181 [[#ifndef __SUNPRO_CC
1182 #error Not Sun compiler
1184 [AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1185 AM_CXXFLAGS="$AM_CXXFLAGS -xarch=$enable_sse"]
1187 [AC_MSG_RESULT([don't know how to for compiler $CXX])]
1193 AC_MSG_RESULT([non-x86 arch ($host_cpu)]) ;;
1195 AC_SUBST([FP_EXCESS_PRECISION])
1198 [/* Disable stupid MSVC "performance" warning for converting int to bool. */
1200 # pragma warning(disable:4800)
1203 /* _FORTIFY_SOURCE is only supported by GCC >= 4.1 and glibc >= 2.3.4, but it
1204 * shouldn't cause a problem to define it where it's not supported and some
1205 * distros may have backported support, so hardcoding version checks is
1206 * counter-productive.
1208 * Check if _FORTIFY_SOURCE is already defined to allow the user to override
1209 * our choice with "./configure CPPFLAGS=-D_FORTIFY_SOURCE=0" or "...=1".
1211 #if defined __GNUC__ && !defined _FORTIFY_SOURCE
1212 # define _FORTIFY_SOURCE 2
1215 /* For GCC >= 3.0 (and Intel's C++ compiler, which also defines __GNUC__),
1216 * we can use __builtin_expect to give the compiler hints about branch
1217 * prediction. See HACKING for how to use these.
1219 #if defined __GNUC__
1220 /* The arguments of __builtin_expect() are both long, so use !! to ensure that
1221 * the first argument is always an integer expression, and always 0 or 1, but
1222 * still has the same truth value for the if or while it is used in.
1224 # define rare(COND) __builtin_expect(!!(COND), 0)
1225 # define usual(COND) __builtin_expect(!!(COND), 1)
1227 # define rare(COND) (COND)
1228 # define usual(COND) (COND)
1231 /* Signal we're building the library so it's OK to include headers such as
1232 * xapian/query.h directly.
1234 #define XAPIAN_LIB_BUILD 1
1236 /* With Sun CC 5.13 (Studio 12.4) on Solaris 11.2, <math.h> seems to get
1237 * implicitly included somehow before <cmath>, and compilation fails due
1238 * to 'std::exception' colliding with 'struct exception'. It's not clear
1239 * how to avoid this, so just define the making macro which <cmath> does
1240 * before it includes <math.h>.
1243 # define __MATHERR_RENAME_EXCEPTION
1247 AC_SUBST([AM_CXXFLAGS])
1249 dnl Restore CXXFLAGS to those the user specified or autoconf defaulted to.
1250 CXXFLAGS=$save_CXXFLAGS
1252 dnl Required for auto regeneration to work in a combined maintainer-mode tree.
1253 : ${AUTOM4TE=autom4te}
1254 AC_SUBST([AUTOM4TE])
1256 dnl Libtool sets this (to yes|no|unknown) and we use it in xapian-config.
1257 AC_SUBST([link_all_deplibs_CXX])
1259 dnl Shared library extension.
1261 eval "SHLIBEXT=$shrext_cmds"
1262 AC_SUBST([SHLIBEXT])
1264 dnl We want to be able to use GNU make % pattern rules in maintainer targets
1265 dnl but automake warns these aren't portable, so we substitute the % to avoid
1270 dnl Split up the version number into "MAJOR.MINOR.REVISION".
1271 MAJOR_VERSION=`echo "$VERSION"|sed 's/\..*//'`
1272 [MINOR_VERSION=`echo "$VERSION"|sed 's/[^.]*\.//;s/\..*//'`]
1273 [REVISION=`echo "$VERSION"|sed 's/.*\.//;s/_.*$//'`]
1275 dnl **************************
1276 dnl * Build the output files *
1277 dnl **************************
1283 docs/doxygen_api.conf
1284 docs/doxygen_source.conf
1286 cmake/xapian-config.cmake
1287 cmake/xapian-config-version.cmake
1288 pkgconfig/xapian-core"$LIBRARY_VERSION_SUFFIX".pc:pkgconfig/xapian-core.pc.in
1290 AC_CONFIG_FILES([tests/runtest], [chmod +x tests/runtest])
1291 AC_CONFIG_FILES([tests/runsrv], [chmod +x tests/runsrv])
1292 AC_CONFIG_FILES([tests/submitperftest], [chmod +x tests/submitperftest])
1293 AC_CONFIG_FILES([tests/perftest/get_machine_info], [chmod +x tests/perftest/get_machine_info])
1294 AC_CONFIG_FILES([xapian-config], [chmod +x xapian-config])
1295 AC_CONFIG_FILES([makemanpage], [chmod +x makemanpage])
1298 dnl There are no files generated by AC_OUTPUT in the following directories
1299 dnl and we need to ensure they exist so that the rest of configure or make
1300 dnl won't fail because they don't exist when srcdir != builddir.
1301 if test yes = "$vpath_build" ; then
1302 for dir in include/xapian languages queryparser ; do
1303 AS_MKDIR_P(["$dir"])
1307 dnl Generate include/xapian/version.h:
1309 dnl MAIN_VERSION is VERSION without any _git123 suffix.
1310 MAIN_VERSION="$MAJOR_VERSION.$MINOR_VERSION.$REVISION"
1312 for backend in CHERT GLASS INMEMORY REMOTE ; do
1313 val=`eval echo "\\\$BUILD_BACKEND_${backend}_TRUE"`
1314 if test -z "$val" ; then
1315 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_HAS_${backend}_BACKEND"
1319 if test yes = "$enable_64bit_docid" ; then
1320 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1322 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1325 if test yes = "$enable_64bit_termcount" ; then
1326 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1328 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1331 dnl For GCC (and compilers which pretend to be GCC) and MSVC, we create some
1332 dnl ABI checks in the generated version.h, and $CXXFLAGS may contain options
1333 dnl which affect the ABI (e.g. -fabi-version for GCC) so we want to use these
1334 dnl options when generating version.h. For these compilers, CXXCPP="$CXX -E"
1335 dnl so it should understand all compiler options.
1337 dnl For other compilers, we only pass $CPPFLAGS to $CXXCPP in case it's an
1338 dnl external cpp which doesn't understand flags which might be in $CXXFLAGS.
1339 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef __GNUC__
1345 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS $CXXFLAGS"],
1346 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS"])
1347 rm -f include/xapian/version.h.tmp
1348 dnl "\r" in sed is a GNUism, but we only need to remove it on MS Windows
1349 dnl where we'll always have GNU sed, and other sed's will just interpret
1350 dnl it as "r" (Solaris sed) or maybe literal "\r" which won't match.
1352 dnl Use @@ around $MAIN_VERSION so we get " in the final output.
1353 $CXXCPP $cxxcpp_flags\
1354 -DSTRING_VERSION="\"@@$MAIN_VERSION@@\""\
1355 -DMAJOR_VERSION="\"$MAJOR_VERSION\""\
1356 -DMINOR_VERSION="\"$MINOR_VERSION\""\
1357 -DREVISION="\"$REVISION\""\
1359 $srcdir/include/xapian/version_h.cc|\
1360 ${SED-sed} '/"/!d;s/^ *//;/^#/d;s/ *$//;s/" *,//;s/"//g;s/@@/"/g;s/ */ /g;s/ *,\r$//;s/ *,$//;s/____/ /g'\
1361 > include/xapian/version.h.tmp
1362 dnl Only update the file if it has changed, so we don't alter the timestamp
1363 dnl and cause lots of rebuilding needlessly. However, the build system
1364 dnl needs a timestamp to know when to regenerate version.h because version_h.cc
1365 dnl has changed so we use a separate timestamp file.
1366 touch include/xapian/version.h.timestamp
1367 if cmp include/xapian/version.h.tmp include/xapian/version.h >/dev/null 2>&1
1369 rm include/xapian/version.h.tmp
1371 mv include/xapian/version.h.tmp include/xapian/version.h