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], [1.5.0], [https://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 libxapian1.5
32 dnl 0:0:0 1.5.0 Reset as library renamed
33 LIBRARY_VERSION_INFO=0:0:0
34 AC_SUBST([LIBRARY_VERSION_INFO])
36 LIBRARY_VERSION_SUFFIX=
37 dnl Where xapian.h, etc go.
39 case $PACKAGE_VERSION in
41 dnl Development release series:
42 [dev_series=`echo "$PACKAGE_VERSION"|sed 's/\.[^.]*$//'`]
44 dnl Append version installed programs by default. To specify no suffix,
45 dnl configure with: --program-suffix=
46 test x"$program_suffix" != xNONE || program_suffix=-$dev_series
48 incdir=$incdir/xapian-$dev_series
50 LIBRARY_VERSION_SUFFIX=-$dev_series
54 AC_SUBST([LIBRARY_VERSION_SUFFIX])
57 dnl Check the build directory doesn't contain a space, so we die early with
61 AC_MSG_ERROR([You can't build in a directory whose path contains a space])
65 dnl Check the source directory doesn't contain a space, so we die early with
66 dnl a helpful error. FIXME: Unfortunately, configure seems to choke before
67 dnl it gets to us so this code doesn't get a chance to fire.
70 dnl Note: for in-tree builds, the build directory test above will fire
72 AC_MSG_ERROR([You can't build with sources in a directory whose path contains a space])
76 dnl Check the prefix to install in doesn't contain a space, so we die early with
80 AC_MSG_ERROR([You can't install in a directory whose path contains a space])
84 dnl Note if the user specified a particular C++ compiler so we can give a more
85 dnl appropriate error message if we can't link a simple C++ program.
87 if test -n "$CXX" ; then
88 original_CXX="CXX=$CXX"
89 elif test -n "$CCC" ; then
90 original_CXX="CCC=$CCC"
93 dnl See HACKING document for details of the reasons for required versions.
94 AM_INIT_AUTOMAKE([1.13 -Wportability tar-ustar no-dist-gzip dist-xz std-options])
95 AC_CONFIG_SRCDIR([matcher/multiandpostlist.cc])
97 AC_CONFIG_HEADERS([config.h])
99 AC_CONFIG_MACRO_DIRS([m4])
103 dnl Use libtool to manage our libraries.
105 dnl Default to only building shared libraries.
107 dnl Building both shared and static means having to compile the files which
108 dnl make up the library twice on most platforms. Shared libraries are the
109 dnl better option for most users, and if anyone really wants static libraries,
110 dnl they can configure with --enable-static (or --enable-static=xapian-core if
111 dnl configuring a combined tree with the bindings).
113 dnl We don't export any data items from the library, so it should be safe to
114 dnl enable win32-dll without decorating any declarations specially.
115 LT_INIT([disable-static win32-dll])
117 dnl -no-undefined causes problems on Solaris with Sun CC in C++11 mode, so only
118 dnl pass -no-undefined on platforms where it is required in order to link a
119 dnl shared library at all (Windows is the main one).
121 if test unsupported = "$allow_undefined_flag" ; then
122 NO_UNDEFINED=-no-undefined
124 AC_SUBST(NO_UNDEFINED)
128 dnl A standard "gotcha" for mingw and cygwin users is to not set up their
129 dnl PATH correctly, so that MSDOS FIND.EXE is found before Unix find. Help
130 dnl them out by checking for this condition, rather than letting libtool
131 dnl fail in obscure ways. NB check the *BUILD* OS, not the host one!
133 *mingw* | *cygwin* | pw32*)
134 find /dirunlikelytoexist >/dev/null 2>&1
135 if test $? = 2 ; then
136 dnl Unix find will return 1 if the directory didn't exist, or 0 if
139 *** You appear to have an MSDOS-like FIND.EXE in your PATH ahead of any
140 *** UNIX-like find. This misconfiguration will confuse libtool - you'll need
141 *** to make sure you have a UNIX-like find installed and fix your PATH, then
142 *** rerun configure. For more information, see:
144 *** https://www.cygwin.com/faq/faq.html#faq.using.find
150 dnl Add parameters for aclocal
151 dnl (This must come after AM_INIT_AUTOMAKE, since it modifies ACLOCAL)
152 ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"
154 dnl disable "maintainer only" rules by default
157 dnl Checks for programs.
162 # Checked: freebsd8.0 openbsd4.6 solaris2.9 solaris2.10
164 linux* | k*bsd*-gnu | freebsd* | openbsd* | solaris*)
165 dnl Vanilla libtool sets this to "unknown" which it then handles as "yes".
166 link_all_deplibs_CXX=no
172 dnl Extract search path from ldconfig which is more reliable than the way
173 dnl vanilla libtool extracts them from ld.so.conf.
174 d=`/sbin/ldconfig -N -X -v 2>&AS_MESSAGE_LOG_FD|$SED 's,^\(/.*\):\( (.*)\)\?$,\1,p;d'|tr '\n' ' '`
175 test -z "$d" || sys_lib_dlsearch_path_spec=$d
180 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
181 dnl On these platforms, libtool emits a warning if -no-install is passed,
182 dnl and uses -no-fast-install instead - the least ugly way to avoid that
183 dnl warnings seems to be to duplicate the above list of platforms from
184 dnl libtool and use -no-fast-install on them directly.
185 NO_INSTALL=-no-fast-install ;;
187 NO_INSTALL=-no-install ;;
189 AC_SUBST([NO_INSTALL])
191 dnl For reasons which are beyond me, if autoconf can't find a C++ compiler
192 dnl it will set CXX to g++ (which obviously won't work) rather than actually
193 dnl telling the user that it couldn't find a C++ compiler and telling them
194 dnl to either install one or set CXX if there's one configure failed to find.
195 dnl It's probably worthwhile checking that the C++ compiler actually works
197 if test -n "$CXX" ; then
199 AC_MSG_CHECKING([whether $CXX is a working C++ compiler])
200 AC_CACHE_VAL([xo_cv_cxx_works],
202 AC_TRY_RUN([int main() {}],
205 AC_TRY_LINK([], [], xo_cv_cxx_works=yes, xo_cv_cxx_works=no))
207 AC_MSG_RESULT([$xo_cv_cxx_works])
211 if test no = "$xo_cv_cxx_works" ; then
212 case $original_CXX in
214 dnl CCC is handled in a slightly odd way - if its value isn't an
215 dnl executable (taking PATH into account) then it is ignored!
216 test "$original_CXX" = "CCC=$CXX" || original_CXX=
219 if test -z "$original_CXX" ; then
221 *** You need a working C++ compiler to compile Xapian, but configure failed to
222 *** find one. If you have a working C++ compiler, you can tell configure where
223 *** to find it by invoking it like so:
225 *** ./configure CXX=/opt/bin/c++
229 *** You need a working C++ compiler to compile Xapian, but the compiler you
230 *** specified (with '$original_CXX') doesn't appear to be able to successfully
231 *** compile and link a simple program.
236 dnl Probe for any options needed to enable C++11 support.
237 AX_CXX_COMPILE_STDCXX_11
239 dnl We don't use a C compiler to compile Xapian's code, but on some platforms
240 dnl (e.g. mingw) libtool uses $LTCC which defaults to $CC, and it's also use to
241 dnl build auxiliary tools like snowball and lemon.
244 dnl Check endianness.
247 dnl We want a non-cross-compiling C compiler for building lemon with.
248 if test -z "$CC_FOR_BUILD" ; then
249 if test yes = "$cross_compiling"; then
255 AC_ARG_VAR([CC_FOR_BUILD], [C compiler command for native compilation (needed to compile build tools during cross-builds)])
257 dnl Run tests using the C++ compiler.
260 dnl Enable large file support if possible.
262 dnl With xlC on AIX, -D_LARGE_FILES changes the ABI of std::string, so it
263 dnl also needs to be used when compiling user code.
264 abi_affecting_cxxflags=
265 if $GREP '^#define _LARGE_FILES 1$' confdefs.h > /dev/null 2>&1 ; then
266 abi_affecting_cxxflags=-D_LARGE_FILES
268 AC_SUBST([abi_affecting_cxxflags])
270 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
271 #if defined __WIN32__ || defined _WIN32
274 ]])], [win32=no], [win32=yes])
276 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
280 ]])], [msvc=no], [msvc=yes])
284 AC_SUBST([XAPIAN_LDFLAGS])
285 AC_SUBST([XAPIAN_LIBS])
287 AC_DEFUN([XAPIAN_TEST_LINKER_FLAG],
289 AC_MSG_CHECKING([for $CXX -Wl,$1])
290 AC_CACHE_VAL([xo_cv_ldflag_$2],
292 save_LDFLAGS=$LDFLAGS
293 LDFLAGS="$LDFLAGS -Wl,$1"
295 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
300 LDFLAGS=$save_LDFLAGS
302 AC_MSG_RESULT([$xo_cv_ldflag_$2])
305 dnl Test if the compiler works with $1 added to CXXFLAGS; if it does, add $1 to
306 dnl variable $2. If the test passes, also do $3; if it fails, also do $4.
307 AC_DEFUN([XAPIAN_TEST_CXXFLAGS],
309 XTC_save_CXXFLAGS=$CXXFLAGS
310 CXXFLAGS="$CXXFLAGS $1"
311 AC_TRY_COMPILE([], [],
312 [CXXFLAGS=$XTC_save_CXXFLAGS
315 [CXXFLAGS=$XTC_save_CXXFLAGS
320 if test yesyes = "$GXX$enable_shared" ; then
323 XAPIAN_TEST_LINKER_FLAG([--enable-runtime-pseudo-reloc], [enable_runtime_pseudo_reloc],
324 [ldflags="-Wl,$flag"],
326 dnl Can't use AC_DISABLE_SHARED after AC_PROG_LIBTOOL, but
327 dnl this test needs to be after AC_PROG_LIBTOOL, so we can't
328 dnl just disable the shared build automatically...
329 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])
334 dnl Only works for ldflags which can be specified anywhere on the link line.
337 dnl Preserve the default CXXFLAGS.
338 save_CXXFLAGS=$CXXFLAGS
340 dnl x86 has excess precision issues with 387 FP instructions, which are
341 dnl avoided by using SSE instructions instead. This is also faster (~6% in
342 dnl a CPU bound testcase).
344 [AS_HELP_STRING([--disable-sse],
345 [disable use of SSE FP instructions on x86])]
346 [AS_HELP_STRING([[--enable-sse[=sse|sse2]]],
347 [set which SSE FP instructions to use on x86 (default: sse2)])],
348 [case ${enableval} in
350 *) AC_MSG_ERROR([bad value ${enableval} for --enable-sse or --disable-sse]) ;;
354 dnl Some versions of Sun's C++ compiler reportedly need an explicit -lm.
355 dnl The maths functions we use include: exp log ceil fabs sqrt
356 AC_MSG_CHECKING([if -lm is required for maths functions])
357 dnl Don't use constant arguments as the compiler might simply evaluate the
358 dnl whole expression at compile time, and it might inline certain functions
359 dnl so test several functions. Also write results using printf() so that
360 dnl the compiler can't optimise away the computations.
361 AC_TRY_LINK([#ifdef __SUNPRO_CC
362 #error Need -lm for Sun C++ 5.9 under libtool 2.2.10
367 using namespace std;], [
368 double a = log(ceil(time(NULL)/7.0));
369 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));
370 ], [AC_MSG_RESULT([no])], [
372 AC_TRY_LINK([#include <cmath>
375 using namespace std;], [
376 double a = log(ceil(time(NULL)/7.0));
377 printf("%f %f %f\n", a, sqrt(a), exp(fabs(a - 12345.6)));],
378 [AC_MSG_RESULT([yes])],
379 [AC_MSG_ERROR([Failed to link a C++ program using <cmath>])
383 dnl C++11 should have log2(double), but keep this check for now to allow for
384 dnl compilers with incomplete library support for C++11.
385 AC_CHECK_DECLS([log2(double)], [], [],
387 using namespace std;])
389 dnl exp10() is a GNU libc extension.
390 AC_CHECK_DECLS([exp10(double)], [], [],
392 using namespace std;])
394 dnl Darwin provides __exp10().
395 AC_CHECK_DECLS([__exp10(double)], [], [],
397 using namespace std;])
399 dnl GCC provides __builtin_exp10() (but notably clang doesn't currently).
400 dnl On mingw, __builtin_exp10() causes GCC to generate a call to exp10() which
401 dnl then fails to link, so perform a link check here to catch that.
402 AC_CACHE_CHECK([for __builtin_exp10], ac_cv_link___builtin_exp10, [
403 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
406 using namespace std;]],
407 [[printf("%f", __builtin_exp10(double(time(NULL)*1e-8)));]])],
408 [ac_cv_link___builtin_exp10=yes],
409 [ac_cv_link___builtin_exp10=no])
411 if test $ac_cv_link___builtin_exp10 = yes ; then
412 AC_DEFINE([HAVE___BUILTIN_EXP10], [1], [Define to 1 if you have the `__builtin_exp10' function.])
415 dnl See if <typeinfo> can be used in the testsuite - at least for GCC and xlC,
416 dnl compilation of the test code below fails if RTTI isn't being generated
417 dnl (g++ -fno-rtti, or by default with xlC).
418 AC_MSG_CHECKING([if RTTI is supported])
419 save_CXXFLAGS=$CXXFLAGS
420 dnl xlC issues a warning for typeid() being used without RTTI being enabled,
421 dnl so for this test we pass the xlC option to make that warning into an error.
422 XAPIAN_TEST_CXXFLAGS([-qhaltonmsg=1540-2412], [CXXFLAGS])
425 #include <typeinfo>],
430 } catch (std::exception & e) {
431 return typeid(e).name()[0];
434 AC_DEFINE([USE_RTTI], [1], [Define if the testsuite can use RTTI]),
436 CXXFLAGS=$save_CXXFLAGS
438 AC_CHECK_DECLS([__builtin_bswap16, __builtin_bswap32], [], [], [ ])
439 AC_CHECK_DECLS([__builtin_clz, __builtin_clzl, __builtin_clzll], [], [], [ ])
440 AC_CHECK_DECLS([__builtin_ctz, __builtin_ctzl, __builtin_ctzll], [], [], [ ])
441 AC_CHECK_DECLS([__builtin_expect], [], [], [ ])
442 AC_CHECK_DECLS([__builtin_popcount, __builtin_popcountl, __builtin_popcountll], [], [], [ ])
443 AC_CHECK_DECLS([__popcnt, __popcnt64], [], [], [#include <intrin.h>])
445 dnl Check for time functions.
446 AC_CHECK_FUNCS([clock_gettime sleep nanosleep gettimeofday ftime])
450 dnl For _ftime64() on mingw we need to tell it we're happy to require
451 dnl MSVCRT 6.10 or higher, which isn't too onerous a requirement it seems.
452 AC_DEFINE([__MSVCRT_VERSION__], [0x0601], [Define on mingw to the minimum msvcrt version to assume])
453 AC_DEFINE([MINGW_HAS_SECURE_API], [1], [Define on mingw to get _s suffixed "secure" functions declared in headers])
457 dnl We use timer_create() if available to implement a search time limit.
459 AC_SEARCH_LIBS([timer_create], [rt],
461 AC_MSG_CHECKING([for timer_create() usability])
462 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
463 [[#if defined _AIX || defined __GNU__
464 #error timer_create known not to work
466 [AC_MSG_RESULT([yes])
467 XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"
468 AC_DEFINE([HAVE_TIMER_CREATE], [1], [Define to 1 if you have the 'timer_create' function.])]
475 dnl Used by tests/soaktest/soaktest.cc
476 AC_CHECK_FUNCS([srandom random])
478 dnl Used by tests/harness/testsuite.cc
479 AC_CHECK_FUNCS([sigaction])
480 AC_MSG_CHECKING([for sigsetjmp and siglongjmp])
481 AC_TRY_COMPILE([#include <setjmp.h>],
482 [sigjmp_buf jb; if (sigsetjmp(jb, 1)) { siglongjmp(jb, 1); }],
483 AC_DEFINE([HAVE_SIGSETJMP], [1], [Define to 1 if you have the 'sigsetjmp' function])
484 AC_MSG_RESULT([yes]),
487 dnl Used by tests/harness/cputimer.cc:
488 AC_CHECK_FUNCS([getrusage times sysconf])
490 dnl Used by tests/api_replicate.cc.
492 dnl Solaris < 10 only has putenv().
494 dnl Microsoft have marked putenv() as deprecated, so we use _putenv_s() under
495 dnl MSVC to avoid deprecation warnings. We probe here since mingw doesn't
496 dnl currently (v3.20) provide _putenv_s(), so we can't just use it conditional
497 dnl on __WIN32__ being defined. We need to check for a declaration rather
498 dnl than just seeing if the symbol exists, as the symbol will exist in the C
499 dnl runtime DLL even if mingw doesn't declare it in its headers.
500 AC_CHECK_FUNCS([setenv])
501 AC_CHECK_DECLS([_putenv_s(const char *,const char *)], [], [],
502 [#include <stdlib.h>])
504 dnl See if we have closefrom(), or some functions that are useful to implement
505 dnl closefrom() on platforms which don't provide it.
506 AC_CHECK_FUNCS([closefrom getdirentries getrlimit])
508 dnl See if ftime returns void (as it does on mingw)
509 AC_MSG_CHECKING([return type of ftime])
510 if test $ac_cv_func_ftime = yes ; then
511 AC_TRY_COMPILE([#include <sys/timeb.h>],
512 [struct timeb tp; int i = ftime(&tp);],
513 AC_MSG_RESULT([int]),
514 AC_MSG_RESULT([void])
515 AC_DEFINE([FTIME_RETURNS_VOID], [1], [Define if ftime returns void]))
518 dnl Check how to find the hostname: uname() in sys/utsname.h, or gethostname()
519 dnl Don't use default includes as inttypes.h is found by Compaq C but not C++
520 dnl so it causes all header probes to fail.
521 AC_CHECK_HEADERS([sys/utsname.h], [], [], [ ])
522 AC_CHECK_FUNCS([gethostname])
524 dnl mingw (for instance) lacks ssize_t
531 AC_CHECK_SIZEOF([short])
532 AC_CHECK_SIZEOF([int])
533 AC_CHECK_SIZEOF([long])
534 AC_CHECK_SIZEOF([long long])
536 AC_CHECK_HEADERS([sys/types.h])
538 AC_MSG_CHECKING([for 32 bit integer type])
540 "$ac_cv_sizeof_int") INT32_T=int ;;
541 "$ac_cv_sizeof_long") INT32_T=long ;;
542 "$ac_cv_sizeof_short") INT32_T=short ;;
544 AC_MSG_RESULT([none found])
545 AC_MSG_ERROR([No 32 bit integer type found])
547 AC_MSG_RESULT([$INT32_T])
549 AC_MSG_CHECKING([for 64 bit integer type])
551 "$ac_cv_sizeof_int") INT64_T=int ;;
552 "$ac_cv_sizeof_long") INT64_T=long ;;
553 "$ac_cv_sizeof_long_long") INT64_T='long long' ;;
555 AC_MSG_RESULT([none found])
556 AC_MSG_ERROR([No 64 bit integer type found])
558 AC_MSG_RESULT([$INT64_T])
560 dnl Check for perl (needed to generate some sources and documentation).
561 AC_PATH_PROG([PERL], [perl], [])
562 if test x$USE_MAINTAINER_MODE = xyes; then
563 test -z "$PERL" && AC_MSG_ERROR([perl is required in maintainer mode])
566 AC_ARG_ENABLE([64bit_docid],
567 [AS_HELP_STRING([--enable-64bit-docid], [enable 64bit docid [default=no]])],
568 [case ${enableval} in
570 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-docid]) ;;
572 [enable_64bit_docid=no])
574 AC_ARG_ENABLE([64bit_termcount],
575 [AS_HELP_STRING([--enable-64bit-termcount], [enable 64bit termcount [default=no]])],
576 [case ${enableval} in
578 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-termcount]) ;;
580 [enable_64bit_termcount=no])
582 AC_ARG_ENABLE([documentation],
583 [AS_HELP_STRING([--enable-documentation], [enable make rules to rebuild documentation [default=maintainer-mode]])],
584 [case ${enableval} in
586 *) AC_MSG_ERROR([bad value ${enableval} for --enable-documentation]) ;;
588 [enable_documentation=$USE_MAINTAINER_MODE])
589 AM_CONDITIONAL([DOCUMENTATION_RULES], [test x"$enable_documentation" = xyes])
590 AM_CONDITIONAL([MAINTAINER_NO_DOCS], [test x"$USE_MAINTAINER_MODE$enable_documentation" = xyesno])
592 if test x"$enable_documentation" = xyes ; then
593 dnl Checks for dot. (Diagrams in the documentation)
594 AC_PATH_PROG([DOT], [dot])
595 test -z "$DOT" && AC_MSG_ERROR([dot (part of the graphviz package) is required to build documentation])
596 DOXYGEN_DOT_PATH=`echo "$DOT" | sed 's!/dot$!!'`
597 AC_SUBST([DOXYGEN_DOT_PATH])
599 dnl Check for doxygen. (Needed to make some more of the documentation)
600 AC_PATH_PROG([DOXYGEN], [doxygen], [])
601 test -z "$DOXYGEN" && AC_MSG_ERROR([doxygen is required to build documentation])
603 dnl Check for help2man. (Needed to make man pages from "--help" output).
604 AC_PATH_PROG([HELP2MAN], [help2man], [])
605 test -z "$HELP2MAN" && AC_MSG_ERROR([help2man is required to build documentation])
607 dnl Check for rst2html. (Needed to make HTML from reStructuredText format)
608 dnl Also look for rst2html.py, which archlinux reportedly installs it as.
609 AC_PATH_PROGS([RST2HTML], [rst2html rst2html.py], [])
610 test -z "$RST2HTML" && AC_MSG_ERROR([rst2html is required to build documentation (try package python-docutils)])
612 dnl Check for pngcrush, which we optionally use to reduce the size of the
613 dnl PNG files which doxygen generates. We can get by without it, so don't
614 dnl fail here if it's not found.
615 AC_PATH_PROG([PNGCRUSH], [pngcrush], [])
618 dnl Checks for header files.
619 AC_CHECK_HEADERS([fcntl.h limits.h sys/errno.h sys/select.h], [], [], [ ])
620 AC_CHECK_HEADERS([sys/resource.h],
621 [], [], [#include <sys/types.h>])
623 dnl cxxabi.h was added in GCC 3.1, but clang lies and defines __GNUC__ yet
624 dnl doesn't seem to reliably provide this header, so probe for it.
625 AC_CHECK_HEADERS([cxxabi.h], [], [], [ ])
627 dnl If valgrind is installed and new enough, we use it for leak checking in the
628 dnl testsuite. If VALGRIND is set to an empty value, then skip the check and
629 dnl don't use valgrind.
630 if test -n "${VALGRIND-unset}" ; then
631 AC_PATH_PROG([VALGRIND], [valgrind], [])
632 if test -n "$VALGRIND" ; then
633 dnl Check that the installed valgrind version works, and supports the
634 dnl options we use. This means we won't try to use valgrind < 3.3.0
635 dnl (released 7/12/2007) since before that --log-file didn't expand
636 dnl %p (and appended the process id).
638 dnl No need to check for VALGRIND_COUNT_LEAKS now - that was added before
640 AC_MSG_CHECKING([if valgrind supports --log-file with %p and --child-silent-after-fork=yes])
641 vglog=config.vglog.%p.tmp
642 vglogwild="config.vglog.*.tmp*"
644 if $VALGRIND --log-file="$vglog" --child-silent-after-fork=yes -q true 2>&AS_MESSAGE_LOG_FD ; then
645 for f in $vglogwild ; do
647 $vglog*) VALGRIND= ;;
650 if test x"$VALGRIND" = x ; then
654 AC_CHECK_HEADERS([valgrind/memcheck.h], [], [VALGRIND=], [ ])
657 dnl The valgrind detected doesn't seem to work! Perhaps this is an
658 dnl x86_64 box with a 32 bit valgrind.
659 AC_MSG_RESULT([$VALGRIND doesn't work])
666 if test -n "$VALGRIND" ; then
667 AC_DEFINE([HAVE_VALGRIND], [1], [Define if a suitable valgrind is installed])
670 dnl If eatmydata is installed, we run the testsuite under it to speed it up.
671 dnl If EATMYDATA is set to an empty value, then skip this check and don't use
673 if test -n "${EATMYDATA-unset}" ; then
674 AC_PATH_PROG([EATMYDATA], [eatmydata], [])
677 dnl Checks for library functions.
681 AC_CACHE_CHECK([for sys_errlist and sys_nerr], ac_cv_sys_errlist_and_sys_nerr, [
682 AC_LINK_IFELSE([AC_LANG_PROGRAM(
683 dnl On Linux, sys_errlist and sys_nerr need <stdio.h>, though the man page
684 dnl says <errno.h>. The man page seems to match other platforms such as
685 dnl NetBSD, so include both headers to ensure we get them.
687 #include <stdio.h>]],
688 [[ printf("%s", sys_errlist[sys_nerr - 1]);]])],
689 [ ac_cv_sys_errlist_and_sys_nerr=yes ],
690 [ ac_cv_sys_errlist_and_sys_nerr=no ])
692 if test "x$ac_cv_sys_errlist_and_sys_nerr" = "xyes" ; then
693 AC_DEFINE([HAVE_SYS_ERRLIST_AND_SYS_NERR], [1],[Define if you have 'sys_errlist' and 'sys_nerr'])
696 AC_CACHE_CHECK([for _sys_errlist and _sys_nerr], ac_cv__sys_errlist_and__sys_nerr, [
697 AC_LINK_IFELSE([AC_LANG_PROGRAM(
699 #include <stdio.h>]],
700 [[ printf("%s", _sys_errlist[_sys_nerr - 1]);]])],
701 [ ac_cv__sys_errlist_and__sys_nerr=yes ],
702 [ ac_cv__sys_errlist_and__sys_nerr=no
705 if test "x$ac_cv__sys_errlist_and__sys_nerr" = "xyes" ; then
706 AC_DEFINE([HAVE__SYS_ERRLIST_AND__SYS_NERR], [1],[Define if you have '_sys_errlist' and '_sys_nerr'])
709 dnl Check that snprintf actually works as it's meant to.
711 dnl Linux 'man snprintf' warns:
712 dnl Linux libc4.[45] does not have a snprintf, but provides a libbsd that
713 dnl contains an snprintf equivalent to sprintf, i.e., one that ignores the
714 dnl size argument. Thus, the use of snprintf with early libc4 leads to
715 dnl serious security problems.
717 dnl It also warns that glibc < 2.0.6 (and presumably other pre-C99
718 dnl implementations) return -1 when truncating so check that we get the
719 dnl ISO C99 semantics for the returned length when truncating. If we
720 dnl have a working snprintf but with non-ISO return semantics, handle
721 dnl that case separately as it may still be useful in many cases.
723 dnl mingw has _snprintf so check for that too.
724 AC_MSG_CHECKING([for working ISO C99 conforming snprintf])
725 ac_cv_func_snprintf_noniso=no
726 for func in snprintf _snprintf ; do
734 dnl Return different exit status for each error so we can see which
735 dnl check failed by consulting config.log.
737 char buffer[4] = "abc";
738 int res1 = $func(buffer, 2, "%s", "XYZ");
739 if (memcmp(buffer, "X\0c", 4) != 0) return 2;
740 int res2 = $func(buffer, 2, "%x", 0x12);
741 if (memcmp(buffer, "1\0c", 4) != 0) return 3;
742 if (res1 == -1 && res2 == -1) return 15; /* Pre-ISO semantics. */
743 if (res1 != 3) return 4;
744 if (res2 != 2) return 5;
747 [ac_cv_func_snprintf=$func;break],
749 if test 15no = "$?$ac_cv_func_snprintf_noniso" ; then
750 ac_cv_func_snprintf_noniso=$func
752 ac_cv_func_snprintf=no
754 [ac_cv_func_snprintf=unknown;break]
757 AC_MSG_RESULT([$ac_cv_func_snprintf])
758 case $ac_cv_func_snprintf in
760 AC_MSG_CHECKING([for working non-ISO C99 conforming snprintf])
761 AC_MSG_RESULT([$ac_cv_func_snprintf_noniso])
762 if test no != "$ac_cv_func_snprintf_noniso" ; then
763 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf_noniso],
764 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
768 dnl be conservative when crosscompiling
771 AC_DEFINE_UNQUOTED([SNPRINTF_ISO], [$ac_cv_func_snprintf],
772 [Define to the name of a function implementing snprintf with ISO C99 semantics (if one exists)])
773 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf],
774 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
778 dnl ***************************
779 dnl * Select modules to build *
780 dnl ***************************
782 dnl Check which database backends should be built.
784 AC_DEFUN([_XAPIAN_BACKEND_ENABLE],
785 [AC_ARG_ENABLE([backend_$1],
786 [AS_HELP_STRING([--enable-backend-$1], [build the $1 database backend [default=$3]])],
789 *) AC_MSG_ERROR([Invalid option: '--enable-backend-$1=$enableval']) ;;
790 esac], [enable_backend_$1=$2])
793 AC_DEFUN([XAPIAN_BACKEND_ENABLE],
794 [_XAPIAN_BACKEND_ENABLE([$1],
795 m4_default([$2], [yes]),
796 m4_default([$3], [yes]))
799 dnl When adding a new backend, update INSTALL too.
800 XAPIAN_BACKEND_ENABLE([glass])
801 XAPIAN_BACKEND_ENABLE([honey])
802 XAPIAN_BACKEND_ENABLE([inmemory])
803 default_enable_backend_remote=yes
806 dnl We don't currently support the remote backend on this platform so
807 dnl disable it by default.
808 default_enable_backend_remote=no
811 XAPIAN_BACKEND_ENABLE([remote], [$default_enable_backend_remote], [yes (except for MSDOS)])
816 case $enable_backend_glass$enable_backend_honey in
818 dnl We use zlib for compressing tags in glass and honey. We could
819 dnl automatically disable support if zlib isn't found, but overall that
820 dnl probably does more harm than good - it's most likely that someone just
821 dnl forgot to install the -dev package for zlib.
823 dnl Similarly for uuid support.
825 dnl Check for zlib.h.
826 AC_CHECK_HEADERS([zlib.h], [], [
827 AC_MSG_ERROR([zlib.h not found - required for glass (you may need to install the zlib1g-dev or zlib-devel package)])
830 dnl Check for zlibVersion in -lz.
832 dnl mingw build needs -lzlib or -lzdll.
833 AC_SEARCH_LIBS([zlibVersion], [z zlib zdll], [], [
834 AC_MSG_ERROR([zlibVersion() not found in -lz, -lzlib, or -lzdll - required for glass (you may need to install the zlib1g-dev or zlib-devel package)])
836 if test x != x"$LIBS" ; then
837 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
841 dnl Find the UUID library (from e2fsprogs/util-linux-ng, not the OSSP one).
843 case $host_os-$win32 in
844 *-yes | *cygwin*) dnl Use built-in win32 API.
846 AC_DEFINE([USE_WIN32_UUID_API], [1],
847 [Define to 1 to use UuidCreate(), etc])
848 if test $win32 = yes ; then
849 dnl We need -lws2_32 for htonl(), etc, but not for Cygwin which
850 dnl provides these functions in its libc.
853 XAPIAN_LIBS="$XAPIAN_LIBS -lrpcrt4"
856 dnl Check for uuid/uuid.h (e2fsprogs/util-linux-ng) or uuid.h
857 dnl (FreeBSD/NetBSD).
858 AC_CHECK_HEADERS([uuid/uuid.h], [
859 dnl util-linux-ng's uuid/uuid.h found - check for uuid_generate in
862 AC_SEARCH_LIBS([uuid_generate], [uuid], [], [
863 AC_MSG_ERROR([uuid_generate() not found in -luuid - required for glass and honey backends (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
865 if test x != x"$LIBS" ; then
866 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
869 dnl Try uuid.h as found on FreeBSD/NetBSD, with associated code in libc.
870 AC_CHECK_HEADERS([uuid.h], [
871 dnl Check for uuid_create with no extra libraries required.
872 AC_CHECK_FUNC([uuid_create], [], [
873 AC_MSG_ERROR([uuid.h found, but uuid_create() not found. You probably wants to install libuuid from util-linux-ng or e2fsprogs (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
876 dnl Especially useful for Android.
877 AC_MSG_CHECKING([if host platform supports /proc/sys/kernel/random/uuid])
881 AC_DEFINE([USE_PROC_FOR_UUID], [1],
882 [Define to 1 to read UUID from '/proc/sys/kernel/random/uuid'])
887 AC_MSG_ERROR([Failed to find a way to generate UUIDs, required for glass and honey backends (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
895 dnl Older versions of libuuid (such as that on CentOS 4.7) don't have
896 dnl uuid_unparse_lower(), only uuid_unparse().
897 AC_LINK_IFELSE([AC_LANG_CALL([], [uuid_unparse_lower])],
899 AC_DEFINE([HAVE_UUID_UNPARSE_LOWER], [1],
900 [Define to 1 if you have the 'uuid_unparse_lower' function.])
906 dnl DJGPP has a dummy implementation of fork which always fails.
908 dnl For disk-based backends, use flock() for locking, which doesn't need
909 dnl fork() or socketpair().
910 AC_DEFINE([FLINTLOCK_USE_FLOCK], 1, [Define to use flock() for flint-compatible locking])
915 AM_CONDITIONAL([USE_PROC_FOR_UUID], [test "$use_proc_for_uuid" = 1])
916 AM_CONDITIONAL([USE_WIN32_UUID_API], [test "$use_win32_uuid_api" = 1])
918 if test "$enable_backend_remote" = yes ; then
919 case $host_os-$win32 in
921 dnl For mingw and msvc we have an alternative implementation which
922 dnl doesn't need fork() or socketpair().
924 dnl We need -lws2_32 for getaddrinfo(), etc.
926 dnl Vista is needed for the AI_ADDRCONFIG flag to getaddrinfo().
927 AC_DEFINE([WINVER], [0x600],
928 [Version of Windows to assume (0x600 => Vista).])
929 AC_DEFINE([_WIN32_WINNT], [WINVER],
930 [Version of Windows to assume.])
933 dnl DJGPP has a dummy implementation of fork which always fails. If
934 dnl someone actually wanted remote backend support, then DJGPP has a
935 dnl pthreads port, so using threads like we do on Windows would make more
937 AC_MSG_ERROR([The remote backend is not currently supported on this platform.])
940 dnl On Unix, we need fork and socketpair for the remotebackend.
942 AC_CHECK_FUNCS([fork], [], [
943 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.)])
945 dnl Check if -lsocket is required for socketpair (Solaris needs it).
946 dnl And on Haiku it's in -lnetwork.
947 AC_SEARCH_LIBS([socketpair], [socket network], [], [
948 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.)])
950 AC_DEFINE([HAVE_SOCKETPAIR], [1],
951 [Define to 1 if you have the 'socketpair' function.])
952 dnl Check if extra libraries are needed for getaddrinfo or inet_ntop()
953 dnl (e.g. on Solaris).
955 dnl We're currently assuming that any system that is worth trying to
956 dnl support has getaddrinfo() and inet_ntop(), since these are the
957 dnl standard route for supporting IPv6, and that's pretty much essential
958 dnl for platforms to support now.
959 AC_SEARCH_LIBS([getaddrinfo], [nsl socket], [], [
960 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.)])
962 AC_SEARCH_LIBS([inet_ntop], [nsl socket], [], [
963 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.)])
965 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
973 if test "$win32_need_lws2_32" = 1 ; then
974 XAPIAN_LIBS="$XAPIAN_LIBS -lws2_32"
977 AC_ARG_ENABLE([visibility],
978 [AS_HELP_STRING([--disable-visibility], [disable use of GCC visibility])],
979 [case ${enableval} in
981 *) AC_MSG_ERROR([bad value ${enableval} for --disable-visibility]) ;;
985 if test "`pwd`" != "`cd $srcdir;pwd`" ; then
988 AM_CONDITIONAL([VPATH_BUILD], [test yes = "$vpath_build"])
990 dnl Turn off compilation of anything that we don't have the requirements for
992 dnl Set conditionals to specify what we compile
994 AM_CONDITIONAL([BUILD_BACKEND_GLASS], [test yes = "$enable_backend_glass"])
995 AM_CONDITIONAL([BUILD_BACKEND_HONEY], [test yes = "$enable_backend_honey"])
996 AM_CONDITIONAL([BUILD_BACKEND_INMEMORY], [test yes = "$enable_backend_inmemory"])
997 AM_CONDITIONAL([BUILD_BACKEND_REMOTE], [test yes = "$enable_backend_remote"])
998 AM_CONDITIONAL([BUILD_BACKEND_TOOLS],
999 [test nono != "$enable_backend_glass$enable_backend_honey"])
1001 dnl Decide if we should use the zlib-vg.so LD_PRELOAD hack.
1003 if test -n "$VALGRIND" ; then
1005 linux*) use_zlib_vg=yes ;;
1008 AM_CONDITIONAL([USE_ZLIB_VG], [test yes = "$use_zlib_vg"])
1010 dnl See if we have fdatasync, and what libraries are needed for it.
1011 dnl We need to actually check for a declaration as OS X has a dummy
1012 dnl implementation in the library which is not prototyped in any header.
1013 AC_CHECK_DECL([fdatasync(int)], [
1015 AC_SEARCH_LIBS([fdatasync], [rt], [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"])
1017 AC_CHECK_FUNCS([fdatasync])
1019 [ac_cv_func_fdatasync=no],
1020 [#include <unistd.h>]
1023 AC_CHECK_FUNCS([fsync])
1024 AC_CHECK_FUNCS([posix_fadvise])
1025 if test "$win32" = no ; then
1026 dnl ftruncate() under Wine seems to be buggy and sometimes fails, though
1027 dnl a cut-down reproducer seems fine. For now just avoid ftruncate()
1028 dnl entirely on this platform - we'll fallback to lseek() + write() of a
1029 dnl single zero byte, which is pretty efficient.
1030 AC_CHECK_FUNCS([ftruncate])
1033 dnl HP-UX has pread and pwrite, but they don't work! Apparently this problem
1034 dnl manifests when largefile support is enabled, and we definitely want that
1035 dnl so don't use pread or pwrite on HP-UX.
1038 AC_MSG_CHECKING([for pread])
1039 AC_MSG_RESULT([present but broken on $host_os])
1040 AC_MSG_CHECKING([for pwrite])
1041 AC_MSG_RESULT([present but broken on $host_os])
1044 AC_CHECK_FUNC([pread],
1045 [AC_DEFINE([HAVE_PREAD], [1],
1046 [Define if pread is available on this system])
1047 AC_MSG_CHECKING([for any prototype needed for pread])
1048 AC_CACHE_VAL([xo_cv_pread_prototype],
1051 'extern "C" ssize_t pread(int, void *, size_t, off_t) throw ();' \
1052 'extern "C" ssize_t pread(int, void *, size_t, off_t);' ; do
1054 #include <sys/types.h>
1059 pread(1, b, 256, 20);
1061 xo_cv_pread_prototype="$p"
1065 if test -z "$xo_cv_pread_prototype"; then
1066 AC_MSG_RESULT([not found])
1067 AC_MSG_ERROR([Failed to find working prototype for pread])
1070 if test " " = "$xo_cv_pread_prototype" ; then
1071 AC_MSG_RESULT([none required])
1073 AC_MSG_RESULT([$xo_cv_pread_prototype])
1074 AC_DEFINE_UNQUOTED([PREAD_PROTOTYPE], [$xo_cv_pread_prototype],
1075 [explicit prototype needed for pread (if any)])
1078 AC_CHECK_FUNC([pwrite],
1079 [AC_DEFINE([HAVE_PWRITE], [1],
1080 [Define if pwrite is available on this system])
1081 AC_MSG_CHECKING([for any prototype needed for pwrite])
1082 AC_CACHE_VAL([xo_cv_pwrite_prototype],
1085 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t) throw ();' \
1086 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t);' ; do
1088 #include <sys/types.h>
1092 const char *p = "hello";
1093 pwrite(1, p, 5, 20);
1095 xo_cv_pwrite_prototype="$p"
1099 if test -z "$xo_cv_pwrite_prototype"; then
1100 AC_MSG_RESULT([not found])
1101 AC_MSG_ERROR([Failed to find working prototype for pwrite])
1104 if test " " = "$xo_cv_pwrite_prototype" ; then
1105 AC_MSG_RESULT([none required])
1107 AC_MSG_RESULT([$xo_cv_pwrite_prototype])
1108 AC_DEFINE_UNQUOTED([PWRITE_PROTOTYPE], [$xo_cv_pwrite_prototype],
1109 [explicit prototype needed for pwrite (if any)])
1115 AC_MSG_CHECKING([for directory separator(s)])
1116 case $host_os-$win32 in
1117 *-yes | cygwin* | os2* | *djgpp* | *msdos* )
1118 AC_MSG_RESULT([/ and \\])
1119 AC_DEFINE([DIR_SEPS], ["/\\"], [directory separator(s) as a character or string literal])
1120 AC_DEFINE([DIR_SEPS_LIST], [{ '/', '\\' }], [directory separator(s) as an initialiser list])
1124 AC_DEFINE([DIR_SEPS], ['/'], [directory separator(s) as a character or string literal])
1125 AC_DEFINE([DIR_SEPS_LIST], [{ '/' }], [directory separator(s) as an initialiser list])
1129 AC_CHECK_FUNCS([link])
1131 dnl *************************
1132 dnl * Set debugging options *
1133 dnl *************************
1135 dnl Which assertion types to enable in the code.
1137 AC_ARG_ENABLE([assertions],
1138 [AS_HELP_STRING([--enable-assertions], [enable debug assertions (no|partial|yes) [default=no]])],
1142 AC_MSG_ERROR([Invalid option: '--enable-assertions=$enableval']) ;;
1145 AC_ARG_ENABLE([log],
1146 [AS_HELP_STRING([--enable-log], [generate a log of methods called, etc (no|yes|profile) [default=no]])],
1150 AC_MSG_ERROR(['--enable-log=profile' is no longer supported - see https://trac.xapian.org/wiki/ProfilingXapian for alternatives.]) ;;
1152 AC_MSG_ERROR([Invalid option: '--enable-log=$enableval']) ;;
1155 dnl Set defines according to the --enable-assertions and --enable-log options
1158 if test yes = "$enable_assertions" || test partial = "$enable_assertions" ; then
1159 AC_DEFINE([XAPIAN_ASSERTIONS],,
1160 [Define if you want assertions (causes some slow-down)])
1163 if test yes = "$enable_assertions"; then
1164 AC_DEFINE([XAPIAN_ASSERTIONS_PARANOID],,
1165 [Define if you want paranoid assertions (causes significant slow-down)])
1168 if test yes = "$enable_log"; then
1169 AC_DEFINE([XAPIAN_DEBUG_LOG],,
1170 [Define if you want a log of methods called and other debug messages])
1173 dnl ******************************
1174 dnl * Set special compiler flags *
1175 dnl ******************************
1177 dnl Set flags to control warnings (enable more, or disable annoying ones).
1179 if test yes = "$GXX"; then
1180 dnl Intel's C++ compiler and clang both lie and define __GNUC__, so check which
1181 dnl we actually have, as neither is really 100% compatible.
1182 case `echo __INTEL_COMPILER __clang__|$CXX -E - 2>&AS_MESSAGE_LOG_FD|grep -v '^#'` in
1183 *__INTEL_COMPILER*__clang__*)
1184 dnl GCC (since neither substituted):
1186 dnl The exact format of g++ --version seems to change with almost every
1187 dnl minor release so use the preprocessor macros which should be more
1189 AC_MSG_CHECKING([for version of $CXX])
1190 gxx_version=`echo __GNUC__.__GNUC_MINOR__.__GNUC_PATCHLEVEL__|$CXX -E -|sed '/^#/d;s/ //g'`
1191 AC_MSG_RESULT([GCC $gxx_version])
1193 case $gxx_version in
1194 [[0123]].*|4.[[0-7]].*)
1195 AC_MSG_ERROR([Xapian requires GCC 4.8 or later])
1199 dnl -Wundef was supported by g++ 3.0.
1201 dnl -Wlogical-op and -Wmissing-declarations (for C++) were added in
1204 dnl -Wdouble-promotion was added in GCC 4.6.
1206 dnl -Winit-self was added in GCC 3.4, but for GCC < 4.7 g++ always
1207 dnl warns for this case with -Wuninitialized (implied by -W). We
1208 dnl don't intend to use this idiom, so any instances are bugs we'd
1209 dnl like to know about.
1211 dnl All the other options were supported by g++ 2.95.
1212 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual -Wstrict-null-sentinel -Wshadow -Wstrict-overflow=1 -Wlogical-op -Wmissing-declarations -Wdouble-promotion -Winit-self"
1215 dnl -Wconversion in older GCC versions is intended to help migration
1216 dnl from K&R to ISO C, and isn't useful for us. In 4.3 it was renamed
1217 dnl to -Wtraditional-conversion and a new -Wconversion added which
1218 dnl sounds useful but is a bit buggy currently. So we should consider
1219 dnl enabling -Wconversion once it is stabilised (GCC 4.4 or ...)
1221 dnl -Wold-style-cast is interesting, but triggers for macros from
1222 dnl system headers (e.g. FD_SET). GCC 4.8 improved this by making
1223 dnl -ftrack-macro-expansion=2 the default, but we still see such
1224 dnl warnings on some platforms for some reason (e.g. Cygwin with GCC
1225 dnl 5.4.0 warns about FD_SET, and on Debian with GCC 4.9.2 we see
1226 dnl warnings from zlib.h).
1228 dnl Automatically add -Werror if maintainer mode is enabled.
1229 if test x$USE_MAINTAINER_MODE = xyes; then
1230 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1234 dnl Intel's compiler (since __clang__ not substituted):
1236 dnl -w1 stops the avalanche of uninteresting "remark" messages.
1237 dnl -wd... disables warnings which don't have good code workarounds.
1238 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -w1 -wd177,1572"
1240 dnl Automatically add -Werror if maintainer mode is enabled.
1241 if test x$USE_MAINTAINER_MODE = xyes; then
1242 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1246 dnl clang (since __INTEL_COMPILER not substituted):
1248 dnl These options all work at least as far back as clang++ 3.0:
1249 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual -Wshadow -Wstrict-overflow=1 -Wmissing-declarations -Winit-self"
1251 dnl Automatically add -Werror if maintainer mode is enabled.
1252 if test x$USE_MAINTAINER_MODE = xyes; then
1253 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1258 if test no != "$enable_visibility"; then
1259 dnl GCC doesn't support symbol visibility on all platforms (e.g. it isn't
1260 dnl supported on mingw and visibility attributes result in warnings).
1261 AC_MSG_CHECKING([if $CXX -fvisibility=hidden -fvisibility-inlines-hidden works])
1262 if echo 'int bar() __attribute__((visibility("default"))); int baz() __attribute__((visibility("internal"))); int bar() { return 6; } int baz() { return 7; } int foo() {return 42;}'|$CXX -Werror -fvisibility=hidden -fvisibility-inlines-hidden -c -oconftest.o -xc++ - >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
1263 AC_MSG_RESULT([yes])
1264 AM_CXXFLAGS="$AM_CXXFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
1265 dash_d_visibility=-DXAPIAN_ENABLE_VISIBILITY
1271 dnl Not GCC, nor a compiler masquerading as GCC.
1274 dnl +w turns on more warnings.
1275 dnl +wlint turns on "lint-like" warnings.
1276 dnl +W<n1>,<n2>,... suppresses warnings n1, n2, ...
1277 dnl 2340 (remark) "value copied to temporary, reference to temporary
1278 dnl use", in: throw Xapian::UnimplementedError("...");
1279 dnl 2401 "destructor for base class ... is non-virtual" (we don't need a
1280 dnl virtual destructor for intrusive_base, since we never delete
1281 dnl its subclasses by a intrusive_base *).
1282 dnl 3348 "declaration hides constant ..." which seems to misfire!
1283 dnl 4255 (remark) "padding size of struct "..." with ... bytes to
1284 dnl alignment boundary".
1285 dnl 4273 "floating-point equality and inequality comparisons may be
1286 dnl inappropriate due to roundoff common in floating-point computation"
1287 dnl No obvious workaround for when you really do want == or !=.
1288 dnl 20201 "Memory leak is detected" which triggers for "return new Foo;"!
1289 AM_CXXFLAGS="$AM_CXXFLAGS +w +wlint +W2340,2401,3348,4255,4273,20201" ;;
1291 dnl Sun's C++ compiler warns about functions failing to return a value even
1292 dnl when the function ends with a "throw" statement. That's just unhelpful
1293 dnl noise, and adding a dummy "return" after "throw" seems a worse solution
1294 dnl than simply disabling this warning - any genuinely missing return
1295 dnl statements will get reported by compilers with superior warning
1297 XAPIAN_TEST_CXXFLAGS([-erroff=voidretw], [AM_CXXFLAGS])
1302 XAPIAN_TEST_LINKER_FLAG([-Bsymbolic-functions], [symbolic_functions],
1303 [XAPIAN_LDFLAGS="$XAPIAN_LDFLAGS $flag"])
1305 FP_EXCESS_PRECISION=no
1306 AC_MSG_CHECKING([whether to use SSE instructions on x86])
1309 if test "$enable_sse" = no ; then
1311 FP_EXCESS_PRECISION=yes
1313 dnl Default to sse2.
1314 test "$enable_sse" != yes || enable_sse=sse2
1315 if test yes = "$GXX"; then
1316 AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1317 dnl We can unconditionally use -mtune=generic as it was added in GCC
1318 dnl 4.2, and supported at least as far back as clang 3.0.
1319 AM_CXXFLAGS="$AM_CXXFLAGS -mfpmath=sse -m$enable_sse -mtune=generic"
1321 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1322 [[#ifndef __SUNPRO_CC
1323 #error Not Sun compiler
1325 [AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1326 AM_CXXFLAGS="$AM_CXXFLAGS -xarch=$enable_sse"]
1328 [AC_MSG_RESULT([don't know how to for compiler $CXX])
1329 FP_EXCESS_PRECISION=yes]
1335 AC_MSG_RESULT([non-x86 arch ($host_cpu)]) ;;
1337 AC_SUBST([FP_EXCESS_PRECISION])
1340 [/* Disable stupid MSVC warnings. */
1342 /* Passing an empty parameter to a single parameter macro. */
1343 # pragma warning(disable:4003)
1344 /* A "performance" warning for converting int to bool. */
1345 # pragma warning(disable:4800)
1349 /* Tell MSVC we want M_PI, etc defined. */
1350 # define _USE_MATH_DEFINES
1352 /* Tell MSVC we don't want max() and min() macros defined. */
1356 /* MSVC defines _WIN32 but not __WIN32__. */
1357 #if !defined __WIN32__ && defined _WIN32 && !defined _WIN64
1361 /* _FORTIFY_SOURCE is only supported by GCC >= 4.1 and glibc >= 2.3.4, but it
1362 * shouldn't cause a problem to define it where it's not supported and some
1363 * distros may have backported support, so hardcoding version checks is
1364 * counter-productive.
1366 * Check if _FORTIFY_SOURCE is already defined to allow the user to override
1367 * our choice with "./configure CPPFLAGS=-D_FORTIFY_SOURCE=0" or "...=1".
1369 #if defined __GNUC__ && !defined _FORTIFY_SOURCE
1370 # define _FORTIFY_SOURCE 2
1373 /* For compilers which support it (such as GCC, clang, Intel's C++ compiler)
1374 * we can use __builtin_expect to give the compiler hints about branch
1375 * prediction. See HACKING for how to use these.
1377 #if HAVE_DECL___BUILTIN_EXPECT
1378 /* The arguments of __builtin_expect() are both long, so use !! to ensure that
1379 * the first argument is always an integer expression, and always 0 or 1, but
1380 * still has the same truth value for the if or while it is used in.
1382 # define rare(COND) __builtin_expect(!!(COND), 0)
1383 # define usual(COND) __builtin_expect(!!(COND), 1)
1385 # define rare(COND) (COND)
1386 # define usual(COND) (COND)
1389 /* Signal we're building the library so it's OK to include headers such as
1390 * xapian/query.h directly.
1392 #define XAPIAN_LIB_BUILD 1
1394 /* With Sun CC 5.13 (Studio 12.4) on Solaris 11.2, <math.h> seems to get
1395 * implicitly included somehow before <cmath>, and compilation fails due
1396 * to 'std::exception' colliding with 'struct exception'. It's not clear
1397 * how to avoid this, so just define the same magic macro which <cmath> does
1398 * before it includes <math.h>.
1401 # define __MATHERR_RENAME_EXCEPTION
1405 AC_SUBST([AM_CXXFLAGS])
1407 dnl Restore CXXFLAGS to those the user specified or autoconf defaulted to.
1408 CXXFLAGS=$save_CXXFLAGS
1410 dnl Required for auto regeneration to work in a combined maintainer-mode tree.
1411 : ${AUTOM4TE=autom4te}
1412 AC_SUBST([AUTOM4TE])
1414 dnl Libtool sets this (to yes|no|unknown) and we use it in xapian-config.
1415 AC_SUBST([link_all_deplibs_CXX])
1417 dnl Shared library extension.
1419 eval "SHLIBEXT=$shrext_cmds"
1420 AC_SUBST([SHLIBEXT])
1422 dnl We want to be able to use GNU make % pattern rules in maintainer targets
1423 dnl but automake warns these aren't portable, so we substitute the % to avoid
1428 dnl Split up the version number into "MAJOR.MINOR.REVISION".
1429 MAJOR_VERSION=`echo "$VERSION"|sed 's/\..*//'`
1430 [MINOR_VERSION=`echo "$VERSION"|sed 's/[^.]*\.//;s/\..*//'`]
1431 [REVISION=`echo "$VERSION"|sed 's/.*\.//;s/_.*$//'`]
1433 dnl **************************
1434 dnl * Build the output files *
1435 dnl **************************
1441 docs/doxygen_api.conf
1442 docs/doxygen_source.conf
1444 cmake/xapian-config.cmake
1445 cmake/xapian-config-version.cmake
1446 pkgconfig/xapian-core"$LIBRARY_VERSION_SUFFIX".pc:pkgconfig/xapian-core.pc.in
1448 AC_CONFIG_FILES([tests/runtest], [chmod +x tests/runtest])
1449 AC_CONFIG_FILES([tests/runsrv], [chmod +x tests/runsrv])
1450 AC_CONFIG_FILES([tests/submitperftest], [chmod +x tests/submitperftest])
1451 AC_CONFIG_FILES([tests/perftest/get_machine_info], [chmod +x tests/perftest/get_machine_info])
1452 AC_CONFIG_FILES([xapian-config], [chmod +x xapian-config])
1453 AC_CONFIG_FILES([makemanpage], [chmod +x makemanpage])
1456 dnl There are no files generated by AC_OUTPUT in the following directories
1457 dnl and we need to ensure they exist so that the rest of configure or make
1458 dnl won't fail because they don't exist when srcdir != builddir.
1459 if test yes = "$vpath_build" ; then
1460 for dir in include/xapian languages queryparser ; do
1461 AS_MKDIR_P(["$dir"])
1465 dnl Generate include/xapian/version.h:
1467 dnl MAIN_VERSION is VERSION without any _git123 suffix.
1468 MAIN_VERSION="$MAJOR_VERSION.$MINOR_VERSION.$REVISION"
1470 for backend in GLASS HONEY INMEMORY REMOTE ; do
1471 val=`eval echo "\\\$BUILD_BACKEND_${backend}_TRUE"`
1472 if test -z "$val" ; then
1473 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_HAS_${backend}_BACKEND"
1477 if test yes = "$enable_64bit_docid" ; then
1478 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1480 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1483 if test yes = "$enable_64bit_termcount" ; then
1484 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1486 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1489 dnl Always ought to be 64 bit.
1490 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TOTALLENGTH_TYPE="`echo "unsigned $INT64_T"|sed 's/ /____/g'`
1492 dnl Make revision numbers in the API 64 bit for future-proofing.
1493 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_REVISION_TYPE="`echo "unsigned $INT64_T"|sed 's/ /____/g'`
1495 dnl For GCC (and compilers which pretend to be GCC) and MSVC, we create some
1496 dnl ABI checks in the generated version.h, and $CXXFLAGS may contain options
1497 dnl which affect the ABI (e.g. -fabi-version for GCC) so we want to use these
1498 dnl options when generating version.h. For these compilers, CXXCPP="$CXX -E"
1499 dnl so it should understand all compiler options.
1501 dnl For other compilers, we only pass $CPPFLAGS to $CXXCPP in case it's an
1502 dnl external cpp which doesn't understand flags which might be in $CXXFLAGS.
1503 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef __GNUC__
1509 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS $CXXFLAGS"],
1510 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS"])
1511 rm -f include/xapian/version.h.tmp
1512 dnl "\r" in sed is a GNUism, but we only need to remove it on MS Windows
1513 dnl where we'll always have GNU sed, and other sed's will just interpret
1514 dnl it as "r" (Solaris sed) or maybe literal "\r" which won't match.
1516 dnl Use @@ around $MAIN_VERSION so we get " in the final output.
1517 $CXXCPP $cxxcpp_flags\
1518 -DSTRING_VERSION="\"@@$MAIN_VERSION@@\""\
1519 -DMAJOR_VERSION="\"$MAJOR_VERSION\""\
1520 -DMINOR_VERSION="\"$MINOR_VERSION\""\
1521 -DREVISION="\"$REVISION\""\
1523 $srcdir/include/xapian/version_h.cc|\
1524 ${SED-sed} '/"/!d;s/^ *//;/^#/d;s/ *$//;s/" *,//;s/"//g;s/@@/"/g;s/ */ /g;s/ *,\r$//;s/ *,$//;s/____/ /g;s/\\\\$/\\/'\
1525 > include/xapian/version.h.tmp
1526 dnl Only update the file if it has changed, so we don't alter the timestamp
1527 dnl and cause lots of rebuilding needlessly. However, the build system
1528 dnl needs a timestamp to know when to regenerate version.h because version_h.cc
1529 dnl has changed so we use a separate timestamp file.
1530 touch include/xapian/version.h.timestamp
1531 if cmp include/xapian/version.h.tmp include/xapian/version.h >/dev/null 2>&1
1533 rm include/xapian/version.h.tmp
1535 mv include/xapian/version.h.tmp include/xapian/version.h