| blob | 9b1fb24d62ab486c74a89a7fed6a8d85709e02a9 |
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
4 dnl below too.
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.
7 AC_PREREQ([2.64])
8 dnl Extract from the libtool info manual:
9 dnl
10 dnl Here are a set of rules to help you update your library version information:
11 dnl
12 dnl 1. Start with version information of '0:0:0' for each libtool library.
13 dnl
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
17 dnl faster.
18 dnl
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').
21 dnl
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.
24 dnl
25 dnl 5. If any interfaces have been added since the last public release,
26 dnl then increment AGE.
27 dnl
28 dnl 6. If any interfaces have been removed since the last public release
29 dnl then set AGE to 0.
30 dnl
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.
38 incdir=$includedir
39 case $PACKAGE_VERSION in
40 [*.*[13579].*])
41 dnl Development release series:
42 [dev_series=`echo "$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
51 ;;
52 esac
54 AC_SUBST([LIBRARY_VERSION_SUFFIX])
55 AC_SUBST([incdir])
57 dnl Check the build directory doesn't contain a space, so we die early with
58 dnl a helpful error.
59 case `pwd` in
60 *' '*)
61 AC_MSG_ERROR([You can't build in a directory whose path contains a space])
62 ;;
63 esac
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.
68 case $0 in
69 *' '*)
70 dnl Note: for in-tree builds, the build directory test above will fire
71 dnl before this can.
72 AC_MSG_ERROR([You can't build with sources in a directory whose path contains a space])
73 ;;
74 esac
76 dnl Check the prefix to install in doesn't contain a space, so we die early with
77 dnl a helpful error.
78 case $prefix in
79 *' '*)
80 AC_MSG_ERROR([You can't install in a directory whose path contains a space])
81 ;;
82 esac
84 dnl Note if the user specified a particular C++ compiler so we can give a more
85 dnl appropriate error message if we can't link a simple C++ program.
86 original_CXX=
87 if test -n "$CXX" ; then
88 original_CXX="CXX=$CXX"
89 elif test -n "$CCC" ; then
90 original_CXX="CCC=$CCC"
91 fi
93 dnl See HACKING document for details of the reasons for required versions.
94 AM_INIT_AUTOMAKE([1.13 -Wportability tar-ustar no-dist-gzip dist-xz std-options])
95 AC_CONFIG_SRCDIR([matcher/multiandpostlist.cc])
97 AC_CONFIG_HEADERS([config.h])
99 AC_CONFIG_MACRO_DIRS([m4])
101 AM_PROG_AR
103 dnl Use libtool to manage our libraries.
104 LT_PREREQ([2.2.8])
105 dnl Default to only building shared libraries.
106 dnl
107 dnl Building both shared and static means having to compile the files which
108 dnl make up the library twice on most platforms. Shared libraries are the
109 dnl better option for most users, and if anyone really wants static libraries,
110 dnl they can configure with --enable-static (or --enable-static=xapian-core if
111 dnl configuring a combined tree with the bindings).
112 dnl
113 dnl We don't export any data items from the library, so it should be safe to
114 dnl enable win32-dll without decorating any declarations specially.
115 LT_INIT([disable-static win32-dll])
117 dnl -no-undefined causes problems on Solaris with Sun CC in C++11 mode, so only
118 dnl pass -no-undefined on platforms where it is required in order to link a
119 dnl shared library at all (Windows is the main one).
120 NO_UNDEFINED=
121 if test unsupported = "$allow_undefined_flag" ; then
122 NO_UNDEFINED=-no-undefined
123 fi
124 AC_SUBST(NO_UNDEFINED)
126 AM_CXXFLAGS=
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!
132 case $build_os in
133 *mingw* | *cygwin* | pw32*)
134 find /dirunlikelytoexist >/dev/null 2>&1
135 if test $? = 2 ; then
136 dnl Unix find will return 1 if the directory didn't exist, or 0 if
137 dnl it did.
138 AC_MSG_ERROR([
139 *** You appear to have an MSDOS-like FIND.EXE in your PATH ahead of any
140 *** UNIX-like find. This misconfiguration will confuse libtool - you'll need
141 *** to make sure you have a UNIX-like find installed and fix your PATH, then
142 *** rerun configure. For more information, see:
143 ***
144 *** https://www.cygwin.com/faq/faq.html#faq.using.find
145 ])
146 fi
147 ;;
148 esac
150 dnl Add parameters for aclocal
151 dnl (This must come after AM_INIT_AUTOMAKE, since it modifies ACLOCAL)
152 ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"
154 dnl disable "maintainer only" rules by default
155 AM_MAINTAINER_MODE
157 dnl Checks for programs.
158 AC_PROG_CXX
160 AC_CANONICAL_HOST
162 # Checked: freebsd8.0 openbsd4.6 solaris2.9 solaris2.10
163 case $host_os in
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
167 ;;
168 esac
170 case $host_os in
171 linux*)
172 dnl Extract search path from ldconfig which is more reliable than the way
173 dnl vanilla libtool extracts them from ld.so.conf.
174 d=`/sbin/ldconfig -N -X -v 2>&AS_MESSAGE_LOG_FD|$SED 's,^\(/.*\):\( (.*)\)\?$,\1,p;d'|tr '\n' ' '`
175 test -z "$d" || sys_lib_dlsearch_path_spec=$d
176 ;;
177 esac
179 case $host in
180 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
181 dnl On these platforms, libtool emits a warning if -no-install is passed,
182 dnl and uses -no-fast-install instead - the least ugly way to avoid that
183 dnl warnings seems to be to duplicate the above list of platforms from
184 dnl libtool and use -no-fast-install on them directly.
185 NO_INSTALL=-no-fast-install ;;
186 *)
187 NO_INSTALL=-no-install ;;
188 esac
189 AC_SUBST([NO_INSTALL])
191 dnl For reasons which are beyond me, if autoconf can't find a C++ compiler
192 dnl it will set CXX to g++ (which obviously won't work) rather than actually
193 dnl telling the user that it couldn't find a C++ compiler and telling them
194 dnl to either install one or set CXX if there's one configure failed to find.
195 dnl It's probably worthwhile checking that the C++ compiler actually works
196 dnl anyway!
197 if test -n "$CXX" ; then
198 AC_LANG_CPLUSPLUS
199 AC_MSG_CHECKING([whether $CXX is a working C++ compiler])
200 AC_CACHE_VAL([xo_cv_cxx_works],
201 [
202 AC_TRY_RUN([int main() {}],
203 xo_cv_cxx_works=yes,
204 xo_cv_cxx_works=no,
205 AC_TRY_LINK([], [], xo_cv_cxx_works=yes, xo_cv_cxx_works=no))
206 ])
207 AC_MSG_RESULT([$xo_cv_cxx_works])
208 else
209 xo_cv_cxx_works=no
210 fi
211 if test no = "$xo_cv_cxx_works" ; then
212 case $original_CXX in
213 CCC=*)
214 dnl CCC is handled in a slightly odd way - if its value isn't an
215 dnl executable (taking PATH into account) then it is ignored!
216 test "$original_CXX" = "CCC=$CXX" || original_CXX=
217 ;;
218 esac
219 if test -z "$original_CXX" ; then
220 AC_MSG_ERROR([
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:
224 ***
225 *** ./configure CXX=/opt/bin/c++
226 ])
227 else
228 AC_MSG_ERROR([
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.
232 ])
233 fi
234 fi
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 $CC, and it's also use to
241 dnl build auxiliary tools like snowball and lemon.
242 AC_PROG_CC
244 dnl Check endianness.
245 AC_C_BIGENDIAN
247 dnl We want a non-cross-compiling C compiler for building lemon with.
248 if test -z "$CC_FOR_BUILD" ; then
249 if test yes = "$cross_compiling"; then
250 CC_FOR_BUILD=cc
251 else
252 CC_FOR_BUILD="$CC"
253 fi
254 fi
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.
258 AC_LANG_CPLUSPLUS
260 dnl Enable large file support if possible.
261 AC_SYS_LARGEFILE
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
267 fi
268 AC_SUBST([abi_affecting_cxxflags])
270 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
271 #if defined __WIN32__ || defined _WIN32
272 #error WIN32
273 #endif
274 ]])], [win32=no], [win32=yes])
276 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
277 #ifdef _MSC_VER
278 #error MSVC
279 #endif
280 ]])], [msvc=no], [msvc=yes])
282 XAPIAN_LDFLAGS=
283 XAPIAN_LIBS=
284 AC_SUBST([XAPIAN_LDFLAGS])
285 AC_SUBST([XAPIAN_LIBS])
287 AC_DEFUN([XAPIAN_TEST_LINKER_FLAG],
288 [
289 AC_MSG_CHECKING([for $CXX -Wl,$1])
290 AC_CACHE_VAL([xo_cv_ldflag_$2],
291 [
292 save_LDFLAGS=$LDFLAGS
293 LDFLAGS="$LDFLAGS -Wl,$1"
294 flag=$1
295 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
296 [xo_cv_ldflag_$2=yes
297 $3],
298 [xo_cv_ldflag_$2=no
299 $4])
300 LDFLAGS=$save_LDFLAGS
301 ])
302 AC_MSG_RESULT([$xo_cv_ldflag_$2])
303 ])
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 $4.
307 AC_DEFUN([XAPIAN_TEST_CXXFLAGS],
308 [
309 XTC_save_CXXFLAGS=$CXXFLAGS
310 CXXFLAGS="$CXXFLAGS $1"
311 AC_TRY_COMPILE([], [],
312 [CXXFLAGS=$XTC_save_CXXFLAGS
313 $2="${$2} $1"
314 $3],
315 [CXXFLAGS=$XTC_save_CXXFLAGS
316 $4])
317 ])
319 ldflags=
320 if test yesyes = "$GXX$enable_shared" ; then
321 case $host_os in
322 *mingw* | *cygwin*)
323 XAPIAN_TEST_LINKER_FLAG([--enable-runtime-pseudo-reloc], [enable_runtime_pseudo_reloc],
324 [ldflags="-Wl,$flag"],
325 [
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])
330 ])
331 ;;
332 esac
333 fi
334 dnl Only works for ldflags which can be specified anywhere on the link line.
335 AC_SUBST([ldflags])
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).
343 AC_ARG_ENABLE([sse],
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
349 sse|sse2|yes|no) ;;
350 *) AC_MSG_ERROR([bad value ${enableval} for --enable-sse or --disable-sse]) ;;
351 esac],
352 [enable_sse=yes])
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
363 #endif
364 #include <cmath>
365 #include <cstdio>
366 #include <ctime>
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])], [
371 LIBS="-lm $LIBS"
372 AC_TRY_LINK([#include <cmath>
373 #include <cstdio>
374 #include <ctime>
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>])
380 ])
381 ])
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)], [], [],
386 [#include <cmath>
387 using namespace std;])
389 dnl exp10() is a GNU libc extension.
390 AC_CHECK_DECLS([exp10(double)], [], [],
391 [#include <cmath>
392 using namespace std;])
394 dnl Darwin provides __exp10().
395 AC_CHECK_DECLS([__exp10(double)], [], [],
396 [#include <cmath>
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([[
404 #include <cstdio>
405 #include <ctime>
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])
410 ])
411 if test $ac_cv_link___builtin_exp10 = yes ; then
412 AC_DEFINE([HAVE___BUILTIN_EXP10], [1], [Define to 1 if you have the '__builtin_exp10' function.])
413 fi
415 dnl See if <typeinfo> can be used in the testsuite - at least for GCC and xlC,
416 dnl compilation of the test code below fails if RTTI isn't being generated
417 dnl (g++ -fno-rtti, or by default with xlC).
418 AC_MSG_CHECKING([if RTTI is supported])
419 save_CXXFLAGS=$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])
423 AC_TRY_COMPILE([
424 #include <exception>
425 #include <typeinfo>],
426 [
427 int f();
428 try {
429 return f();
430 } catch (std::exception & e) {
431 return typeid(e).name()[0];
432 }],
433 AC_MSG_RESULT([yes])
434 AC_DEFINE([USE_RTTI], [1], [Define if the testsuite can use RTTI]),
435 AC_MSG_RESULT([no]))
436 CXXFLAGS=$save_CXXFLAGS
438 AC_MSG_CHECKING([if std::is_trivially_copyable<> is supported])
439 AC_TRY_COMPILE([#include <type_traits>],
440 [return std::is_trivially_copyable<int>::value ? 1 : 0;],
441 AC_MSG_RESULT([yes])
442 AC_DEFINE([HAVE_STD_IS_TRIVIALLY_COPYABLE], [1], [Define to 1 if you have 'std::is_trivially_copyable<>'.]),
443 AC_MSG_RESULT([no]))
445 dnl We need to specify the argument types for builtin functions, or else
446 dnl AC_CHECK_DECLS fails to detect them when the compiler is clang.
447 AC_CHECK_DECLS([__builtin_add_overflow(int, int, int*),
448 __builtin_mul_overflow(int, int, int*)], [], [], [ ])
449 AC_CHECK_DECLS([__builtin_bswap16(uint16_t),
450 __builtin_bswap32(uint32_t)], [], [],
451 [#include <stdint.h>])
452 AC_CHECK_DECLS([_byteswap_ushort, _byteswap_ulong], [], [],
453 [#include <stdlib.h>])
454 AC_CHECK_DECLS([__builtin_clz(unsigned),
455 __builtin_clzl(unsigned long),
456 __builtin_clzll(unsigned long long)], [], [], [ ])
457 AC_CHECK_DECLS([__builtin_ctz(unsigned),
458 __builtin_ctzl(unsigned long),
459 __builtin_ctzll(unsigned long long)], [], [], [ ])
460 AC_CHECK_DECLS([__builtin_expect(long, long)], [], [], [ ])
461 AC_CHECK_DECLS([__builtin_popcount(unsigned),
462 __builtin_popcountl(unsigned long),
463 __builtin_popcountll(unsigned long long)], [], [], [ ])
464 AC_CHECK_DECLS([__popcnt, __popcnt64], [], [], [#include <intrin.h>])
466 dnl Check for time functions.
467 AC_CHECK_FUNCS([clock_gettime sleep nanosleep gettimeofday ftime])
469 case $host_os in
470 *mingw*)
471 dnl For _ftime64() on mingw we need to tell it we're happy to require
472 dnl MSVCRT 6.10 or higher, which isn't too onerous a requirement it seems.
473 AC_DEFINE([__MSVCRT_VERSION__], [0x0601], [Define on mingw to the minimum msvcrt version to assume])
474 AC_DEFINE([MINGW_HAS_SECURE_API], [1], [Define on mingw to get _s suffixed "secure" functions declared in headers])
475 ;;
476 esac
478 dnl We use timer_create() if available to implement a search time limit.
479 SAVE_LIBS=$LIBS
480 AC_SEARCH_LIBS([timer_create], [rt],
481 [
482 AC_MSG_CHECKING([for timer_create() usability])
483 dnl Several platforms have timer_create() but it's non-functional.
484 dnl
485 dnl Some of these (at least those with a stub implementation which always
486 dnl fails with ENOSYS) could be probed for, but we'd have to run code
487 dnl which isn't possible when cross-compiling, so just maintain a list
488 dnl of such platforms for now.
489 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
490 [[#if defined _AIX
491 #error timer_create always fails with EAGAIN on AIX 7.1
492 #elif defined __GNU__
493 #error timer_create always fails with ENOSYS on GNU Hurd
494 #elif defined __NetBSD__
495 #error timer_create timers never fire on NetBSD 7.1
496 #elif defined __OpenBSD__
497 #error timer_create always fails with ENOSYS on OpenBSD 6.2 (and no prototype)
498 #endif]])],
499 [AC_MSG_RESULT([yes])
500 XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"
501 AC_DEFINE([HAVE_TIMER_CREATE], [1], [Define to 1 if you have the 'timer_create' function.])]
502 ,
503 [AC_MSG_RESULT([no])
504 ])
505 ])
506 LIBS=$SAVE_LIBS
508 dnl Used by tests/soaktest/soaktest.cc
509 AC_CHECK_FUNCS([srandom random])
511 dnl Used by tests/harness/testsuite.cc
512 AC_CHECK_FUNCS([sigaction])
513 AC_MSG_CHECKING([for sigsetjmp and siglongjmp])
514 AC_TRY_COMPILE([#include <setjmp.h>],
515 [sigjmp_buf jb; if (sigsetjmp(jb, 1)) { siglongjmp(jb, 1); }],
516 AC_DEFINE([HAVE_SIGSETJMP], [1], [Define to 1 if you have the 'sigsetjmp' function])
517 AC_MSG_RESULT([yes]),
518 AC_MSG_RESULT([no]))
520 dnl Used by tests/harness/cputimer.cc:
521 AC_CHECK_FUNCS([getrusage times sysconf])
523 dnl Used by tests/harness/unixcmd.cc
524 AC_CHECK_FUNCS([nftw])
526 dnl Used by tests/api_replicate.cc.
527 dnl
528 dnl Solaris < 10 only has putenv().
529 dnl
530 dnl Microsoft have marked putenv() as deprecated, so we use _putenv_s() under
531 dnl MSVC to avoid deprecation warnings. We probe here since mingw doesn't
532 dnl currently (v3.20) provide _putenv_s(), so we can't just use it conditional
533 dnl on __WIN32__ being defined. We need to check for a declaration rather
534 dnl than just seeing if the symbol exists, as the symbol will exist in the C
535 dnl runtime DLL even if mingw doesn't declare it in its headers.
536 AC_CHECK_FUNCS([setenv])
537 AC_CHECK_DECLS([_putenv_s(const char *,const char *)], [], [],
538 [#include <stdlib.h>])
540 dnl See if we have closefrom(), or some functions that are useful to implement
541 dnl closefrom() on platforms which don't provide it.
542 AC_CHECK_FUNCS([closefrom getdirentries getrlimit])
544 dnl See if ftime returns void (as it does on mingw)
545 AC_MSG_CHECKING([return type of ftime])
546 if test $ac_cv_func_ftime = yes ; then
547 AC_TRY_COMPILE([#include <sys/timeb.h>],
548 [struct timeb tp; int i = ftime(&tp);],
549 AC_MSG_RESULT([int]),
550 AC_MSG_RESULT([void])
551 AC_DEFINE([FTIME_RETURNS_VOID], [1], [Define if ftime returns void]))
552 fi
554 dnl Check how to find the hostname: uname() in sys/utsname.h, or gethostname()
555 AC_CHECK_HEADERS([sys/utsname.h], [], [], [ ])
556 AC_CHECK_FUNCS([gethostname])
558 dnl mingw (for instance) lacks ssize_t
559 AC_TYPE_SSIZE_T
561 AC_TYPE_PID_T
563 AC_TYPE_MODE_T
565 AC_CHECK_SIZEOF([short])
566 AC_CHECK_SIZEOF([int])
567 AC_CHECK_SIZEOF([long])
568 AC_CHECK_SIZEOF([long long])
570 AC_CHECK_HEADERS([sys/types.h])
572 AC_MSG_CHECKING([for 32 bit integer type])
573 case 4 in
574 "$ac_cv_sizeof_int") INT32_T=int ;;
575 "$ac_cv_sizeof_long") INT32_T=long ;;
576 "$ac_cv_sizeof_short") INT32_T=short ;;
577 *)
578 AC_MSG_RESULT([none found])
579 AC_MSG_ERROR([No 32 bit integer type found])
580 esac
581 AC_MSG_RESULT([$INT32_T])
583 AC_MSG_CHECKING([for 64 bit integer type])
584 case 8 in
585 "$ac_cv_sizeof_int") INT64_T=int ;;
586 "$ac_cv_sizeof_long") INT64_T=long ;;
587 "$ac_cv_sizeof_long_long") INT64_T='long long' ;;
588 *)
589 AC_MSG_RESULT([none found])
590 AC_MSG_ERROR([No 64 bit integer type found])
591 esac
592 AC_MSG_RESULT([$INT64_T])
594 dnl Check for perl (needed to generate some sources and documentation).
595 AC_PATH_PROG([PERL], [perl], [])
596 if test x$USE_MAINTAINER_MODE = xyes; then
597 test -z "$PERL" && AC_MSG_ERROR([perl is required in maintainer mode])
598 fi
600 AC_ARG_ENABLE([64bit_docid],
601 [AS_HELP_STRING([--enable-64bit-docid], [enable 64bit docid [default=no]])],
602 [case ${enableval} in
603 yes|no) ;;
604 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-docid]) ;;
605 esac],
606 [enable_64bit_docid=no])
608 AC_ARG_ENABLE([64bit_termcount],
609 [AS_HELP_STRING([--enable-64bit-termcount], [enable 64bit termcount [default=no]])],
610 [case ${enableval} in
611 yes|no) ;;
612 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-termcount]) ;;
613 esac],
614 [enable_64bit_termcount=no])
616 AC_ARG_ENABLE([64bit_termpos],
617 [AS_HELP_STRING([--enable-64bit-termpos], [enable 64bit termpos [default=no]])],
618 [case ${enableval} in
619 yes|no) ;;
620 *) AC_MSG_ERROR([bad value ${enableval} for --enable-64bit-termpos]) ;;
621 esac],
622 [enable_64bit_termpos=no])
624 AC_ARG_ENABLE([documentation],
625 [AS_HELP_STRING([--enable-documentation], [enable make rules to rebuild documentation [default=maintainer-mode]])],
626 [case ${enableval} in
627 yes|no) ;;
628 *) AC_MSG_ERROR([bad value ${enableval} for --enable-documentation]) ;;
629 esac],
630 [enable_documentation=$USE_MAINTAINER_MODE])
631 AM_CONDITIONAL([DOCUMENTATION_RULES], [test x"$enable_documentation" = xyes])
632 AM_CONDITIONAL([MAINTAINER_NO_DOCS], [test x"$USE_MAINTAINER_MODE$enable_documentation" = xyesno])
634 if test x"$enable_documentation" = xyes ; then
635 dnl Checks for dot. (Diagrams in the documentation)
636 AC_PATH_PROG([DOT], [dot])
637 test -z "$DOT" && AC_MSG_ERROR([dot (part of the graphviz package) is required to build documentation])
638 DOXYGEN_DOT_PATH=`echo "$DOT" | sed 's!/dot$!!'`
639 AC_SUBST([DOXYGEN_DOT_PATH])
641 dnl Check for doxygen. (Needed to make some more of the documentation)
642 AC_PATH_PROG([DOXYGEN], [doxygen], [])
643 test -z "$DOXYGEN" && AC_MSG_ERROR([doxygen is required to build documentation])
645 dnl Check for help2man. (Needed to make man pages from "--help" output).
646 AC_PATH_PROG([HELP2MAN], [help2man], [])
647 test -z "$HELP2MAN" && AC_MSG_ERROR([help2man is required to build documentation])
649 dnl Check for rst2html. (Needed to make HTML from reStructuredText format)
650 dnl Also look for rst2html.py, which archlinux reportedly installs it as.
651 AC_PATH_PROGS([RST2HTML], [rst2html rst2html.py], [])
652 test -z "$RST2HTML" && AC_MSG_ERROR([rst2html is required to build documentation (try package python-docutils)])
654 dnl Check for pngcrush, which we optionally use to reduce the size of the
655 dnl PNG files which doxygen generates. We can get by without it, so don't
656 dnl fail here if it's not found.
657 AC_PATH_PROG([PNGCRUSH], [pngcrush], [])
658 fi
660 dnl Checks for header files.
661 AC_CHECK_HEADERS([fcntl.h limits.h sys/errno.h sys/select.h sys/uio.h], [], [], [ ])
662 AC_CHECK_HEADERS([sys/resource.h],
663 [], [], [#include <sys/types.h>])
665 dnl cxxabi.h was added in GCC 3.1, but clang lies and defines __GNUC__ yet
666 dnl doesn't seem to reliably provide this header, so probe for it.
667 AC_CHECK_HEADERS([cxxabi.h], [], [], [ ])
669 dnl If valgrind is installed and new enough, we use it for leak checking in the
670 dnl testsuite. If VALGRIND is set to an empty value, then skip the check and
671 dnl don't use valgrind.
672 if test -n "${VALGRIND-unset}" ; then
673 AC_PATH_PROG([VALGRIND], [valgrind], [])
674 if test -n "$VALGRIND" ; then
675 dnl Check that the installed valgrind version works, and supports the
676 dnl options we use. This means we won't try to use valgrind < 3.3.0
677 dnl (released 7/12/2007) since before that --log-file didn't expand
678 dnl %p (and appended the process id).
679 dnl
680 dnl No need to check for VALGRIND_COUNT_LEAKS now - that was added before
681 dnl 2.0.0.
682 AC_MSG_CHECKING([if valgrind supports --log-file with %p and --child-silent-after-fork=yes])
683 vglog=config.vglog.%p.tmp
684 vglogwild="config.vglog.*.tmp*"
685 rm -f $vglogwild
686 if $VALGRIND --log-file="$vglog" --child-silent-after-fork=yes -q true 2>&AS_MESSAGE_LOG_FD ; then
687 for f in $vglogwild ; do
688 case $f in
689 $vglog*) VALGRIND= ;;
690 esac
691 done
692 if test x"$VALGRIND" = x ; then
693 AC_MSG_RESULT([no])
694 else
695 AC_MSG_RESULT([yes])
696 AC_CHECK_HEADERS([valgrind/memcheck.h], [], [VALGRIND=], [ ])
697 fi
698 else
699 dnl The valgrind detected doesn't seem to work! Perhaps this is an
700 dnl x86_64 box with a 32 bit valgrind.
701 AC_MSG_RESULT([$VALGRIND doesn't work])
702 VALGRIND=
703 fi
704 rm -f $vglogwild
705 fi
706 fi
708 if test -n "$VALGRIND" ; then
709 AC_DEFINE([HAVE_VALGRIND], [1], [Define if a suitable valgrind is installed])
710 fi
712 dnl If eatmydata is installed, we run the testsuite under it to speed it up.
713 dnl If EATMYDATA is set to an empty value, then skip this check and don't use
714 dnl eatmydata.
715 if test -n "${EATMYDATA-unset}" ; then
716 AC_PATH_PROG([EATMYDATA], [eatmydata], [])
717 fi
719 dnl Checks for library functions.
720 AC_FUNC_MEMCMP
721 AC_FUNC_STRERROR_R
723 AC_CACHE_CHECK([for sys_errlist and sys_nerr], ac_cv_sys_errlist_and_sys_nerr, [
724 AC_LINK_IFELSE([AC_LANG_PROGRAM(
725 dnl On Linux, sys_errlist and sys_nerr need <stdio.h>, though the man page
726 dnl says <errno.h>. The man page seems to match other platforms such as
727 dnl NetBSD, so include both headers to ensure we get them.
728 [[#include <errno.h>
729 #include <stdio.h>]],
730 [[ printf("%s", sys_errlist[sys_nerr - 1]);]])],
731 [ ac_cv_sys_errlist_and_sys_nerr=yes ],
732 [ ac_cv_sys_errlist_and_sys_nerr=no ])
733 ])
734 if test "x$ac_cv_sys_errlist_and_sys_nerr" = "xyes" ; then
735 AC_DEFINE([HAVE_SYS_ERRLIST_AND_SYS_NERR], [1],[Define if you have 'sys_errlist' and 'sys_nerr'])
736 fi
738 AC_CACHE_CHECK([for _sys_errlist and _sys_nerr], ac_cv__sys_errlist_and__sys_nerr, [
739 AC_LINK_IFELSE([AC_LANG_PROGRAM(
740 [[#include <errno.h>
741 #include <stdio.h>]],
742 [[ printf("%s", _sys_errlist[_sys_nerr - 1]);]])],
743 [ ac_cv__sys_errlist_and__sys_nerr=yes ],
744 [ ac_cv__sys_errlist_and__sys_nerr=no
745 ])
746 ])
747 if test "x$ac_cv__sys_errlist_and__sys_nerr" = "xyes" ; then
748 AC_DEFINE([HAVE__SYS_ERRLIST_AND__SYS_NERR], [1],[Define if you have '_sys_errlist' and '_sys_nerr'])
749 fi
751 dnl Check that snprintf actually works as it's meant to.
752 dnl
753 dnl Linux 'man snprintf' warns:
754 dnl Linux libc4.[45] does not have a snprintf, but provides a libbsd that
755 dnl contains an snprintf equivalent to sprintf, i.e., one that ignores the
756 dnl size argument. Thus, the use of snprintf with early libc4 leads to
757 dnl serious security problems.
758 dnl
759 dnl It also warns that glibc < 2.0.6 (and presumably other pre-C99
760 dnl implementations) return -1 when truncating so check that we get the
761 dnl ISO C99 semantics for the returned length when truncating. If we
762 dnl have a working snprintf but with non-ISO return semantics, handle
763 dnl that case separately as it may still be useful in many cases.
764 dnl
765 dnl mingw has _snprintf so check for that too.
766 AC_MSG_CHECKING([for working ISO C99 conforming snprintf])
767 ac_cv_func_snprintf_noniso=no
768 for func in snprintf _snprintf ; do
769 AC_RUN_IFELSE([
770 AC_LANG_PROGRAM(
771 [[
772 #include <cstdio>
773 #include <cstring>
774 using namespace std;
775 ]],
776 dnl Return different exit status for each error so we can see which
777 dnl check failed by consulting config.log.
778 [[
779 char buffer[4] = "abc";
780 int res1 = $func(buffer, 2, "%s", "XYZ");
781 if (memcmp(buffer, "X\0c", 4) != 0) return 2;
782 int res2 = $func(buffer, 2, "%x", 0x12);
783 if (memcmp(buffer, "1\0c", 4) != 0) return 3;
784 if (res1 == -1 && res2 == -1) return 15; /* Pre-ISO semantics. */
785 if (res1 != 3) return 4;
786 if (res2 != 2) return 5;
787 ]]
788 )],
789 [ac_cv_func_snprintf=$func;break],
790 [
791 if test 15no = "$?$ac_cv_func_snprintf_noniso" ; then
792 ac_cv_func_snprintf_noniso=$func
793 fi
794 ac_cv_func_snprintf=no
795 ],
796 [ac_cv_func_snprintf=unknown;break]
797 )
798 done
799 AC_MSG_RESULT([$ac_cv_func_snprintf])
800 case $ac_cv_func_snprintf in
801 no)
802 AC_MSG_CHECKING([for working non-ISO C99 conforming snprintf])
803 AC_MSG_RESULT([$ac_cv_func_snprintf_noniso])
804 if test no != "$ac_cv_func_snprintf_noniso" ; then
805 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf_noniso],
806 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
807 fi
808 ;;
809 unknown)
810 dnl be conservative when crosscompiling
811 ;;
812 *)
813 AC_DEFINE_UNQUOTED([SNPRINTF_ISO], [$ac_cv_func_snprintf],
814 [Define to the name of a function implementing snprintf with ISO C99 semantics (if one exists)])
815 AC_DEFINE_UNQUOTED([SNPRINTF], [$ac_cv_func_snprintf],
816 [Define to the name of a function implementing snprintf but not caring about ISO C99 return value semantics (if one exists)])
817 ;;
818 esac
820 dnl ***************************
821 dnl * Select modules to build *
822 dnl ***************************
824 dnl Check if a non-GPL library build is specified.
826 AC_ARG_ENABLE([gpl-libxapian],
827 [AS_HELP_STRING([--disable-gpl-libxapian], [disable use of GPL code which we won't be able to relicense in libxapian (NB currently the resulting build still contains GPL code, but GPL code which it will be possible to relicense eventually)])],
828 [case ${enableval} in
829 yes) ;;
830 no)
831 AC_DEFINE([DISABLE_GPL_LIBXAPIAN], 1, [Define to error out if we try to include GPL code in libxapian])
832 ;;
833 *) AC_MSG_ERROR([bad value ${enableval} for --disable-gpl-libxapian]) ;;
834 esac],
835 [enable_gpl_libxapian=yes])
837 dnl Check which database backends should be built.
839 AC_DEFUN([_XAPIAN_BACKEND_ENABLE],
840 [AC_ARG_ENABLE([backend_$1],
841 [AS_HELP_STRING([--enable-backend-$1], [build the $1 database backend [default=$3]])],
842 [case $enableval in
843 yes|no) ;;
844 *) AC_MSG_ERROR([Invalid option: '--enable-backend-$1=$enableval']) ;;
845 esac], [enable_backend_$1=$2])
846 ])
848 AC_DEFUN([XAPIAN_BACKEND_ENABLE],
849 [_XAPIAN_BACKEND_ENABLE([$1],
850 m4_default([$2], [yes]),
851 m4_default([$3], [yes]))
852 ])
854 dnl When adding a new backend, update INSTALL too.
855 XAPIAN_BACKEND_ENABLE([glass], [$enable_gpl_libxapian], [yes (unless --disable-gpl-libxapian)])
856 XAPIAN_BACKEND_ENABLE([honey])
857 XAPIAN_BACKEND_ENABLE([inmemory], [$enable_gpl_libxapian], [yes (unless --disable-gpl-libxapian)])
858 default_enable_backend_remote=$enable_gpl_libxapian
859 case $host_os in
860 *djgpp* | *msdos* )
861 dnl We don't currently support the remote backend on this platform so
862 dnl disable it by default.
863 default_enable_backend_remote=no
864 ;;
865 esac
866 XAPIAN_BACKEND_ENABLE([remote], [$default_enable_backend_remote], [yes (except for MSDOS; unless --disable-gpl-libxapian)])
868 win32_need_lws2_32=0
869 case $enable_backend_glass$enable_backend_honey in
870 *yes*)
871 dnl We use zlib for compressing tags in glass and honey. We could
872 dnl automatically disable support if zlib isn't found, but overall that
873 dnl probably does more harm than good - it's most likely that someone just
874 dnl forgot to install the -dev package for zlib.
875 dnl
876 dnl Similarly for uuid support.
878 dnl Check for zlib.h.
879 AC_CHECK_HEADERS([zlib.h], [], [
880 AC_MSG_ERROR([zlib.h not found - required for glass (you may need to install the zlib1g-dev or zlib-devel package)])
881 ], [ ])
883 dnl Check for zlibVersion in -lz.
884 SAVE_LIBS=$LIBS
885 dnl mingw build needs -lzlib or -lzdll.
886 AC_SEARCH_LIBS([zlibVersion], [z zlib zdll], [], [
887 AC_MSG_ERROR([zlibVersion() not found in -lz, -lzlib, or -lzdll - required for glass (you may need to install the zlib1g-dev or zlib-devel package)])
888 ])
889 if test x != x"$LIBS" ; then
890 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
891 fi
892 LIBS=$SAVE_LIBS
894 dnl Find the UUID library (from e2fsprogs/util-linux-ng, not the OSSP one).
896 case $host_os-$win32 in
897 *-yes | *cygwin*) dnl Use built-in win32 API.
898 AC_DEFINE([USE_WIN32_UUID_API], [1],
899 [Define to 1 to use UuidCreate(), etc])
900 if test $win32 = yes ; then
901 dnl We need -lws2_32 for htonl(), etc, but not for Cygwin which
902 dnl provides these functions in its libc.
903 win32_need_lws2_32=1
904 fi
905 XAPIAN_LIBS="$XAPIAN_LIBS -lrpcrt4"
906 ;;
907 *)
908 dnl Check for uuid/uuid.h (e2fsprogs/util-linux-ng) or uuid.h
909 dnl (FreeBSD/NetBSD).
910 AC_CHECK_HEADERS([uuid/uuid.h], [
911 dnl util-linux-ng's uuid/uuid.h found - check for uuid_generate in
912 dnl -luuid.
913 SAVE_LIBS=$LIBS
914 AC_SEARCH_LIBS([uuid_generate], [uuid], [], [
915 AC_MSG_ERROR([uuid_generate() not found in -luuid - required for glass and honey backends (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
916 ])
917 if test x != x"$LIBS" ; then
918 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
919 fi
920 ], [
921 dnl Try uuid.h as found on FreeBSD/NetBSD, with associated code in libc.
922 AC_CHECK_HEADERS([uuid.h], [
923 dnl Check for uuid_create with no extra libraries required.
924 AC_CHECK_FUNC([uuid_create], [], [
925 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)])
926 ])
927 ], [
928 dnl Especially useful for Android.
929 AC_MSG_CHECKING([if host platform supports /proc/sys/kernel/random/uuid])
930 case $host_os in
931 linux*)
932 AC_DEFINE([USE_PROC_FOR_UUID], [1],
933 [Define to 1 to read UUID from '/proc/sys/kernel/random/uuid'])
934 AC_MSG_RESULT([yes])
935 ;;
936 *)
937 AC_MSG_RESULT([no])
938 AC_MSG_ERROR([Failed to find a way to generate UUIDs, required for glass and honey backends (you may need to install the uuid-dev, libuuid-devel or e2fsprogs-devel package)])
939 ;;
940 esac
941 ], [ ])
942 ], [ ])
943 ;;
944 esac
945 LIBS=$SAVE_LIBS
947 case $host_os in
948 *djgpp* | *msdos* )
949 dnl DJGPP has a dummy implementation of fork which always fails.
950 dnl
951 dnl For disk-based backends, use flock() for locking, which doesn't need
952 dnl fork() or socketpair().
953 AC_DEFINE([FLINTLOCK_USE_FLOCK], 1, [Define to use flock() for flint-compatible locking])
954 ;;
955 esac
956 ;;
957 esac
959 if test "$enable_backend_remote" = yes ; then
960 case $host_os-$win32 in
961 *-yes )
962 dnl For mingw and msvc we have an alternative implementation which
963 dnl doesn't need fork() or socketpair().
964 dnl
965 dnl We need -lws2_32 for getaddrinfo(), etc.
966 win32_need_lws2_32=1
967 dnl Vista is needed for the AI_ADDRCONFIG flag to getaddrinfo().
968 AC_DEFINE([WINVER], [0x600],
969 [Version of Windows to assume (0x600 => Vista).])
970 AC_DEFINE([_WIN32_WINNT], [WINVER],
971 [Version of Windows to assume.])
972 ;;
973 *djgpp* | *msdos* )
974 dnl DJGPP has a dummy implementation of fork which always fails. If
975 dnl someone actually wanted remote backend support, then DJGPP has a
976 dnl pthreads port, so using threads like we do on Windows would make more
977 dnl sense.
978 AC_MSG_ERROR([The remote backend is not currently supported on this platform.])
979 ;;
980 *)
981 dnl On Unix, we need fork and socketpair for the remotebackend.
982 SAVE_LIBS=$LIBS
983 AC_CHECK_FUNCS([fork], [], [
984 AC_MSG_ERROR([fork() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
985 ])
986 dnl Check if -lsocket is required for socketpair (Solaris needs it).
987 dnl And on Haiku it's in -lnetwork.
988 AC_SEARCH_LIBS([socketpair], [socket network], [], [
989 AC_MSG_ERROR([socketpair() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
990 ])
991 AC_DEFINE([HAVE_SOCKETPAIR], [1],
992 [Define to 1 if you have the 'socketpair' function.])
993 dnl Check if extra libraries are needed for getaddrinfo or inet_ntop()
994 dnl (e.g. on Solaris).
995 dnl
996 dnl We're currently assuming that any system that is worth trying to
997 dnl support has getaddrinfo() and inet_ntop(), since these are the
998 dnl standard route for supporting IPv6, and that's pretty much essential
999 dnl for platforms to support now.
1000 AC_SEARCH_LIBS([getaddrinfo], [nsl socket], [], [
1001 AC_MSG_ERROR([getaddrinfo() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
1002 ])
1003 AC_SEARCH_LIBS([inet_ntop], [nsl socket], [], [
1004 AC_MSG_ERROR([inet_ntop() required for the remote backend - if an extra library is needed, pass LIBS=-lfoo to configure. Or --disable-backend-remote to disable it.)])
1005 ])
1006 XAPIAN_LIBS="$XAPIAN_LIBS $LIBS"
1007 LIBS=$SAVE_LIBS
1008 ;;
1009 esac
1011 TYPE_SOCKLEN_T
1012 fi
1014 if test "$win32_need_lws2_32" = 1 ; then
1015 XAPIAN_LIBS="$XAPIAN_LIBS -lws2_32"
1016 fi
1018 AC_ARG_ENABLE([visibility],
1019 [AS_HELP_STRING([--disable-visibility], [disable use of GCC visibility])],
1020 [case ${enableval} in
1021 yes|no) ;;
1022 *) AC_MSG_ERROR([bad value ${enableval} for --disable-visibility]) ;;
1023 esac])
1025 vpath_build=no
1026 if test "`pwd`" != "`cd $srcdir;pwd`" ; then
1027 vpath_build=yes
1028 fi
1029 AM_CONDITIONAL([VPATH_BUILD], [test yes = "$vpath_build"])
1031 dnl Turn off compilation of anything that we don't have the requirements for
1033 dnl Set conditionals to specify what we compile
1035 AM_CONDITIONAL([BUILD_BACKEND_GLASS], [test yes = "$enable_backend_glass"])
1036 AM_CONDITIONAL([BUILD_BACKEND_HONEY], [test yes = "$enable_backend_honey"])
1037 AM_CONDITIONAL([BUILD_BACKEND_INMEMORY], [test yes = "$enable_backend_inmemory"])
1038 AM_CONDITIONAL([BUILD_BACKEND_REMOTE], [test yes = "$enable_backend_remote"])
1039 AM_CONDITIONAL([BUILD_BACKEND_TOOLS],
1040 [test nono != "$enable_backend_glass$enable_backend_honey"])
1042 dnl Decide if we should use the zlib-vg.so LD_PRELOAD hack.
1043 use_zlib_vg=no
1044 if test -n "$VALGRIND" ; then
1045 case $host_os in
1046 linux*) use_zlib_vg=yes ;;
1047 esac
1048 fi
1049 AM_CONDITIONAL([USE_ZLIB_VG], [test yes = "$use_zlib_vg"])
1051 dnl See if we have fdatasync, and what libraries are needed for it.
1052 dnl We need to actually check for a declaration as OS X has a dummy
1053 dnl implementation in the library which is not prototyped in any header.
1054 AC_CHECK_DECL([fdatasync(int)], [
1055 SAVE_LIBS=$LIBS
1056 AC_SEARCH_LIBS([fdatasync], [rt], [XAPIAN_LIBS="$LIBS $XAPIAN_LIBS"])
1057 LIBS=$SAVE_LIBS
1058 AC_CHECK_FUNCS([fdatasync])
1059 ],
1060 [ac_cv_func_fdatasync=no],
1061 [#include <unistd.h>]
1062 )
1064 AC_CHECK_FUNCS([fsync writev])
1065 AC_CHECK_FUNCS([posix_fadvise])
1066 if test "$win32" = no ; then
1067 dnl ftruncate() under Wine seems to be buggy and sometimes fails, though
1068 dnl a cut-down reproducer seems fine. For now just avoid ftruncate()
1069 dnl entirely on this platform - we'll fallback to lseek() + write() of a
1070 dnl single zero byte, which is pretty efficient.
1071 AC_CHECK_FUNCS([ftruncate])
1072 fi
1074 dnl HP-UX has pread and pwrite, but they don't work! Apparently this problem
1075 dnl manifests when largefile support is enabled, and we definitely want that
1076 dnl so don't use pread or pwrite on HP-UX.
1077 case $host_os in
1078 hpux*)
1079 AC_MSG_CHECKING([for pread])
1080 AC_MSG_RESULT([present but broken on $host_os])
1081 AC_MSG_CHECKING([for pwrite])
1082 AC_MSG_RESULT([present but broken on $host_os])
1083 ;;
1084 *)
1085 AC_CHECK_FUNC([pread],
1086 [AC_DEFINE([HAVE_PREAD], [1],
1087 [Define if pread is available on this system])
1088 AC_MSG_CHECKING([for any prototype needed for pread])
1089 AC_CACHE_VAL([xo_cv_pread_prototype],
1090 [
1091 for p in ' ' \
1092 'extern "C" ssize_t pread(int, void *, size_t, off_t) throw ();' \
1093 'extern "C" ssize_t pread(int, void *, size_t, off_t);' ; do
1094 AC_TRY_COMPILE([
1095 #include <sys/types.h>
1096 #include <unistd.h>
1097 $p
1098 ],[
1099 char b[256];
1100 pread(1, b, 256, 20);
1101 ],[
1102 xo_cv_pread_prototype="$p"
1103 break
1104 ])
1105 done
1106 if test -z "$xo_cv_pread_prototype"; then
1107 AC_MSG_RESULT([not found])
1108 AC_MSG_ERROR([Failed to find working prototype for pread])
1109 fi
1110 ])
1111 if test " " = "$xo_cv_pread_prototype" ; then
1112 AC_MSG_RESULT([none required])
1113 else
1114 AC_MSG_RESULT([$xo_cv_pread_prototype])
1115 AC_DEFINE_UNQUOTED([PREAD_PROTOTYPE], [$xo_cv_pread_prototype],
1116 [explicit prototype needed for pread (if any)])
1117 fi
1118 ])
1119 AC_CHECK_FUNC([pwrite],
1120 [AC_DEFINE([HAVE_PWRITE], [1],
1121 [Define if pwrite is available on this system])
1122 AC_MSG_CHECKING([for any prototype needed for pwrite])
1123 AC_CACHE_VAL([xo_cv_pwrite_prototype],
1124 [
1125 for p in ' ' \
1126 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t) throw ();' \
1127 'extern "C" ssize_t pwrite(int, const void *, size_t, off_t);' ; do
1128 AC_TRY_COMPILE([
1129 #include <sys/types.h>
1130 #include <unistd.h>
1131 $p
1132 ],[
1133 const char *p = "hello";
1134 pwrite(1, p, 5, 20);
1135 ],[
1136 xo_cv_pwrite_prototype="$p"
1137 break
1138 ])
1139 done
1140 if test -z "$xo_cv_pwrite_prototype"; then
1141 AC_MSG_RESULT([not found])
1142 AC_MSG_ERROR([Failed to find working prototype for pwrite])
1143 fi
1144 ])
1145 if test " " = "$xo_cv_pwrite_prototype" ; then
1146 AC_MSG_RESULT([none required])
1147 else
1148 AC_MSG_RESULT([$xo_cv_pwrite_prototype])
1149 AC_DEFINE_UNQUOTED([PWRITE_PROTOTYPE], [$xo_cv_pwrite_prototype],
1150 [explicit prototype needed for pwrite (if any)])
1151 fi
1152 ])
1153 ;;
1154 esac
1156 AC_MSG_CHECKING([for directory separator(s)])
1157 case $host_os-$win32 in
1158 *-yes | cygwin* | os2* | *djgpp* | *msdos* )
1159 AC_MSG_RESULT([/ and \\])
1160 AC_DEFINE([DIR_SEPS], ["/\\"], [directory separator(s) as a character or string literal])
1161 AC_DEFINE([DIR_SEPS_LIST], [{ '/', '\\' }], [directory separator(s) as an initialiser list])
1162 ;;
1163 *)
1164 AC_MSG_RESULT([/])
1165 AC_DEFINE([DIR_SEPS], ['/'], [directory separator(s) as a character or string literal])
1166 AC_DEFINE([DIR_SEPS_LIST], [{ '/' }], [directory separator(s) as an initialiser list])
1167 ;;
1168 esac
1170 AC_CHECK_FUNCS([link])
1172 dnl *************************
1173 dnl * Set debugging options *
1174 dnl *************************
1176 dnl Which assertion types to enable in the code.
1178 AC_ARG_ENABLE([assertions],
1179 [AS_HELP_STRING([--enable-assertions], [enable debug assertions (no|partial|yes) [default=no]])],
1180 [case $enableval in
1181 yes|partial|no) ;;
1182 *)
1183 AC_MSG_ERROR([Invalid option: '--enable-assertions=$enableval']) ;;
1184 esac])
1186 AC_ARG_ENABLE([log],
1187 [AS_HELP_STRING([--enable-log], [generate a log of methods called, etc (no|yes|profile) [default=no]])],
1188 [case $enableval in
1189 yes|no) ;;
1190 profile)
1191 AC_MSG_ERROR(['--enable-log=profile' is no longer supported - see https://trac.xapian.org/wiki/ProfilingXapian for alternatives.]) ;;
1192 *)
1193 AC_MSG_ERROR([Invalid option: '--enable-log=$enableval']) ;;
1194 esac])
1196 dnl Set defines according to the --enable-assertions and --enable-log options
1197 dnl given.
1199 if test yes = "$enable_assertions" || test partial = "$enable_assertions" ; then
1200 AC_DEFINE([XAPIAN_ASSERTIONS],,
1201 [Define if you want assertions (causes some slow-down)])
1202 fi
1204 if test yes = "$enable_assertions"; then
1205 AC_DEFINE([XAPIAN_ASSERTIONS_PARANOID],,
1206 [Define if you want paranoid assertions (causes significant slow-down)])
1207 fi
1209 if test yes = "$enable_log"; then
1210 AC_DEFINE([XAPIAN_DEBUG_LOG],,
1211 [Define if you want a log of methods called and other debug messages])
1212 fi
1214 dnl ******************************
1215 dnl * Set special compiler flags *
1216 dnl ******************************
1218 dnl Set flags to control warnings (enable more, or disable annoying ones).
1219 dash_d_visibility=
1220 if test yes = "$GXX"; then
1221 dnl Intel's C++ compiler and clang both lie and define __GNUC__, so check which
1222 dnl we actually have, as neither is really 100% compatible.
1223 case `echo __INTEL_COMPILER __clang__|$CXX -E - 2>&AS_MESSAGE_LOG_FD|grep -v '^#'` in
1224 *__INTEL_COMPILER*__clang__*)
1225 dnl GCC (since neither substituted):
1227 dnl The exact format of g++ --version seems to change with almost every
1228 dnl minor release so use the preprocessor macros which should be more
1229 dnl robust.
1230 AC_MSG_CHECKING([for version of $CXX])
1231 gxx_version=`echo __GNUC__.__GNUC_MINOR__.__GNUC_PATCHLEVEL__|$CXX -E -|sed '/^#/d;s/ //g'`
1232 AC_MSG_RESULT([GCC $gxx_version])
1234 case $gxx_version in
1235 [[0123]].*|4.[[0-7]].*)
1236 AC_MSG_ERROR([Xapian requires GCC 4.8 or later])
1237 ;;
1238 esac
1240 dnl -Wundef was supported by g++ 3.0.
1241 dnl
1242 dnl -Wlogical-op and -Wmissing-declarations (for C++) were added in
1243 dnl GCC 4.3.
1244 dnl
1245 dnl -Wdouble-promotion was added in GCC 4.6.
1246 dnl
1247 dnl -Winit-self was added in GCC 3.4, but for GCC < 4.7 g++ always
1248 dnl warns for this case with -Wuninitialized (implied by -W). We
1249 dnl don't intend to use this idiom, so any instances are bugs we'd
1250 dnl like to know about.
1251 dnl
1252 dnl All the other options were supported by g++ 2.95.
1253 AM_CXXFLAGS="$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"
1255 dnl FIXME:
1256 dnl -Wconversion in older GCC versions is intended to help migration
1257 dnl from K&R to ISO C, and isn't useful for us. In 4.3 it was renamed
1258 dnl to -Wtraditional-conversion and a new -Wconversion added which
1259 dnl sounds useful but is a bit buggy currently. So we should consider
1260 dnl enabling -Wconversion once it is stabilised (GCC 4.4 or ...)
1261 dnl
1262 dnl -Wold-style-cast is interesting, but triggers for macros from
1263 dnl system headers (e.g. FD_SET). GCC 4.8 improved this by making
1264 dnl -ftrack-macro-expansion=2 the default, but we still see such
1265 dnl warnings on some platforms for some reason (e.g. Cygwin with GCC
1266 dnl 5.4.0 warns about FD_SET, and on Debian with GCC 4.9.2 we see
1267 dnl warnings from zlib.h).
1269 dnl Automatically add -Werror if maintainer mode is enabled.
1270 if test x$USE_MAINTAINER_MODE = xyes; then
1271 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1272 fi
1273 ;;
1274 *__clang__*)
1275 dnl Intel's compiler (since __clang__ not substituted):
1276 dnl
1277 dnl -w1 stops the avalanche of uninteresting "remark" messages.
1278 dnl -wd... disables warnings which don't have good code workarounds.
1279 AM_CXXFLAGS="$AM_CXXFLAGS -Wall -w1 -wd177,1572"
1281 dnl Automatically add -Werror if maintainer mode is enabled.
1282 if test x$USE_MAINTAINER_MODE = xyes; then
1283 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1284 fi
1285 ;;
1286 *__INTEL_COMPILER*)
1287 dnl clang (since __INTEL_COMPILER not substituted):
1289 dnl These options all work at least as far back as clang++ 3.0:
1290 AM_CXXFLAGS="$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"
1292 dnl Automatically add -Werror if maintainer mode is enabled.
1293 if test x$USE_MAINTAINER_MODE = xyes; then
1294 AM_CXXFLAGS="$AM_CXXFLAGS -Werror"
1295 fi
1296 ;;
1297 esac
1299 if test no != "$enable_visibility"; then
1300 dnl GCC doesn't support symbol visibility on all platforms (e.g. it isn't
1301 dnl supported on mingw and visibility attributes result in warnings).
1302 AC_MSG_CHECKING([if $CXX -fvisibility=hidden -fvisibility-inlines-hidden works])
1303 if echo 'int bar() __attribute__((visibility("default"))); int baz() __attribute__((visibility("internal"))); int bar() { return 6; } int baz() { return 7; } int foo() {return 42;}'|$CXX -Werror -fvisibility=hidden -fvisibility-inlines-hidden -c -oconftest.o -xc++ - >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
1304 AC_MSG_RESULT([yes])
1305 AM_CXXFLAGS="$AM_CXXFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
1306 dash_d_visibility=-DXAPIAN_ENABLE_VISIBILITY
1307 else
1308 AC_MSG_RESULT([no])
1309 fi
1310 fi
1311 else
1312 dnl Not GCC, nor a compiler masquerading as GCC.
1313 case /$CXX in
1314 */aCC)
1315 dnl +w turns on more warnings.
1316 dnl +wlint turns on "lint-like" warnings.
1317 dnl +W<n1>,<n2>,... suppresses warnings n1, n2, ...
1318 dnl 2340 (remark) "value copied to temporary, reference to temporary
1319 dnl use", in: throw Xapian::UnimplementedError("...");
1320 dnl 2401 "destructor for base class ... is non-virtual" (we don't need a
1321 dnl virtual destructor for intrusive_base, since we never delete
1322 dnl its subclasses by a intrusive_base *).
1323 dnl 3348 "declaration hides constant ..." which seems to misfire!
1324 dnl 4255 (remark) "padding size of struct "..." with ... bytes to
1325 dnl alignment boundary".
1326 dnl 4273 "floating-point equality and inequality comparisons may be
1327 dnl inappropriate due to roundoff common in floating-point computation"
1328 dnl No obvious workaround for when you really do want == or !=.
1329 dnl 20201 "Memory leak is detected" which triggers for "return new Foo;"!
1330 AM_CXXFLAGS="$AM_CXXFLAGS +w +wlint +W2340,2401,3348,4255,4273,20201" ;;
1331 */sunCC|*/CC)
1332 dnl Sun's C++ compiler warns about functions failing to return a value even
1333 dnl when the function ends with a "throw" statement. That's just unhelpful
1334 dnl noise, and adding a dummy "return" after "throw" seems a worse solution
1335 dnl than simply disabling this warning - any genuinely missing return
1336 dnl statements will get reported by compilers with superior warning
1337 dnl machinery.
1338 XAPIAN_TEST_CXXFLAGS([-erroff=voidretw], [AM_CXXFLAGS])
1339 ;;
1340 esac
1341 fi
1343 XAPIAN_TEST_LINKER_FLAG([-Bsymbolic-functions], [symbolic_functions],
1344 [XAPIAN_LDFLAGS="$XAPIAN_LDFLAGS $flag"])
1346 FP_EXCESS_PRECISION=no
1347 AC_MSG_CHECKING([whether to use SSE instructions on x86])
1348 case $host_cpu in
1349 i*86)
1350 if test "$enable_sse" = no ; then
1351 AC_MSG_RESULT([no])
1352 FP_EXCESS_PRECISION=yes
1353 if test yes = "$msvc"; then
1354 dnl MSVC defaults to SSE2.
1355 AM_CXXFLAGS="$AM_CXXFLAGS -arch:IA32"
1356 fi
1357 else
1358 dnl Default to sse2.
1359 test "$enable_sse" != yes || enable_sse=sse2
1360 if test yes = "$GXX"; then
1361 AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1362 dnl We can unconditionally use -mtune=generic as it was added in GCC
1363 dnl 4.2, and supported at least as far back as clang 3.0.
1364 AM_CXXFLAGS="$AM_CXXFLAGS -mfpmath=sse -m$enable_sse -mtune=generic"
1365 elif test yes = "$msvc"; then
1366 AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1367 if test sse = "$enable_sse"; then
1368 dnl MSVC defaults to SSE2.
1369 AM_CXXFLAGS="$AM_CXXFLAGS -arch:SSE"
1370 fi
1371 else
1372 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1373 [[#ifndef __SUNPRO_CC
1374 #error Not Sun compiler
1375 #endif]])],
1376 [AC_MSG_RESULT([yes (configure with --disable-sse to disable)])
1377 AM_CXXFLAGS="$AM_CXXFLAGS -xarch=$enable_sse"]
1378 ,
1379 [AC_MSG_RESULT([don't know how to for compiler $CXX])
1380 FP_EXCESS_PRECISION=yes]
1381 )
1382 fi
1383 fi
1384 ;;
1385 *)
1386 AC_MSG_RESULT([non-x86 arch ($host_cpu)]) ;;
1387 esac
1388 AC_SUBST([FP_EXCESS_PRECISION])
1390 AH_BOTTOM(
1391 [/* Disable stupid MSVC warnings. */
1392 #ifdef _MSC_VER
1393 /* Passing an empty parameter to a single parameter macro. */
1394 # pragma warning(disable:4003)
1395 /* A "performance" warning for converting int to bool. */
1396 # pragma warning(disable:4800)
1398 /* Tell MSVC we want M_PI, etc defined. */
1399 # define _USE_MATH_DEFINES
1401 /* Tell MSVC we don't want max() and min() macros defined. */
1402 # define NOMINMAX
1403 #endif
1405 /* Make the POSIX-like functions support large files. MSVC needs this;
1406 * current mingw32 does too; mingw64 supports _FILE_OFFSET_BITS, which
1407 * AC_SYS_LARGEFILE should discover and enable automatically.
1408 */
1409 #if defined _MSC_VER || \
1410 (defined __MINGW32__ && !defined _FILE_OFFSET_BITS)
1412 # include <sys/stat.h>
1413 # include <sys/types.h>
1414 # include <io.h>
1415 /* zlib.h uses off_t so we need to include it before we redefine off_t. */
1416 # include <zlib.h>
1418 // MSVC needs to call _stat64() instead of stat() and the struct which holds
1419 // the information is "struct _stat64" instead of "struct stat" so we just
1420 // use #define to replace both in one go. We also want to use _fstat64()
1421 // instead of fstat() but in this case we can use a function-like macro.
1422 //
1423 // Mingw has _stat64() but unhelpfully for our purposes, it has an extra
1424 // underscore prefix on the struct name ("struct __stat64") so there we
1425 // target _stati64 instead. This has 64-bit file size but the time_t size
1426 // is switchable. We don't really care about file timestamps in the
1427 // library, so this should be fine.
1428 //
1429 // This hack is a problem is we ever want a method called "stat", or one called
1430 // fstat which takes 2 parameters, but we can probably live with these
1431 // limitations.
1433 # ifdef stat
1434 # undef stat
1435 # endif
1437 # ifdef fstat
1438 # undef fstat
1439 # endif
1441 # ifdef _MSC_VER
1442 # define stat _stat64
1443 # define fstat(FD, BUF) _fstat64(FD, BUF)
1444 # else
1445 # define stat _stati64
1446 # define fstat(FD, BUF) _fstati64(FD, BUF)
1447 # endif
1449 # ifdef lseek
1450 # undef lseek
1451 # endif
1453 # ifdef off_t
1454 # undef off_t
1455 # endif
1457 # define lseek(FD, OFF, WHENCE) _lseeki64(FD, OFF, WHENCE)
1458 /* Redefine via a typedef so C++ code off_t(-1) works - it wouldn't if we did:
1459 * #define off_t long long
1460 */
1461 typedef long long off_t_redefinition_typedef;
1462 # define off_t off_t_redefinition_typedef
1464 #endif
1466 /* MSVC defines _WIN32 but not __WIN32__. */
1467 #if !defined __WIN32__ && defined _WIN32
1468 # define __WIN32__
1469 #endif
1471 /* MSVC defines _WIN64 but not __WIN64__. */
1472 #if !defined __WIN64__ && defined _WIN64
1473 # define __WIN64__
1474 #endif
1476 /* _FORTIFY_SOURCE is only supported by GCC >= 4.1 and glibc >= 2.3.4, but it
1477 * shouldn't cause a problem to define it where it's not supported and some
1478 * distros may have backported support, so hardcoding version checks is
1479 * counter-productive.
1480 *
1481 * Check if _FORTIFY_SOURCE is already defined to allow the user to override
1482 * our choice with "./configure CPPFLAGS=-D_FORTIFY_SOURCE=0" or "...=1".
1483 */
1484 #if defined __GNUC__ && !defined _FORTIFY_SOURCE
1485 # define _FORTIFY_SOURCE 2
1486 #endif
1488 /* For compilers which support it (such as GCC, clang, Intel's C++ compiler)
1489 * we can use __builtin_expect to give the compiler hints about branch
1490 * prediction. See HACKING for how to use these.
1491 */
1492 #if HAVE_DECL___BUILTIN_EXPECT
1493 /* The arguments of __builtin_expect() are both long, so use !! to ensure that
1494 * the first argument is always an integer expression, and always 0 or 1, but
1495 * still has the same truth value for the if or while it is used in.
1496 */
1497 # define rare(COND) __builtin_expect(!!(COND), 0)
1498 # define usual(COND) __builtin_expect(!!(COND), 1)
1499 #else
1500 # define rare(COND) (COND)
1501 # define usual(COND) (COND)
1502 #endif
1504 /* Signal we're building the library so it's OK to include headers such as
1505 * xapian/query.h directly.
1506 */
1507 #define XAPIAN_LIB_BUILD 1
1509 /* With Sun CC 5.13 (Studio 12.4) on Solaris 11.2, <math.h> seems to get
1510 * implicitly included somehow before <cmath>, and compilation fails due
1511 * to 'std::exception' colliding with 'struct exception'. It's not clear
1512 * how to avoid this, so just define the same magic macro which <cmath> does
1513 * before it includes <math.h>.
1514 */
1515 #ifdef __SUNPRO_CC
1516 # define __MATHERR_RENAME_EXCEPTION
1517 #endif
1518 ])
1520 AC_SUBST([AM_CXXFLAGS])
1522 dnl Restore CXXFLAGS to those the user specified or autoconf defaulted to.
1523 CXXFLAGS=$save_CXXFLAGS
1525 dnl Required for auto regeneration to work in a combined maintainer-mode tree.
1526 : ${AUTOM4TE=autom4te}
1527 AC_SUBST([AUTOM4TE])
1529 dnl Libtool sets this (to yes|no|unknown) and we use it in xapian-config.
1530 AC_SUBST([link_all_deplibs_CXX])
1532 dnl Shared library extension.
1533 module=no
1534 eval "SHLIBEXT=$shrext_cmds"
1535 AC_SUBST([SHLIBEXT])
1537 dnl We want to be able to use GNU make % pattern rules in maintainer targets
1538 dnl but automake warns these aren't portable, so we substitute the % to avoid
1539 dnl this warning.
1540 PERCENT='%'
1541 AC_SUBST([PERCENT])
1543 dnl Split up the version number into "MAJOR.MINOR.REVISION".
1544 MAJOR_VERSION=`echo "$VERSION"|sed 's/\..*//'`
1545 [MINOR_VERSION=`echo "$VERSION"|sed 's/[^.]*\.//;s/\..*//'`]
1546 [REVISION=`echo "$VERSION"|sed 's/.*\.//;s/_.*$//'`]
1548 dnl **************************
1549 dnl * Build the output files *
1550 dnl **************************
1552 AC_CONFIG_FILES([
1553 Makefile
1554 tests/Makefile
1555 docs/Makefile
1556 docs/doxygen_api.conf
1557 docs/doxygen_source.conf
1558 xapian-core.spec
1559 cmake/xapian-config.cmake
1560 cmake/xapian-config-version.cmake
1561 pkgconfig/xapian-core"$LIBRARY_VERSION_SUFFIX".pc:pkgconfig/xapian-core.pc.in
1562 ])
1563 AC_CONFIG_FILES([tests/runtest], [chmod +x tests/runtest])
1564 AC_CONFIG_FILES([tests/runsrv], [chmod +x tests/runsrv])
1565 AC_CONFIG_FILES([tests/submitperftest], [chmod +x tests/submitperftest])
1566 AC_CONFIG_FILES([tests/perftest/get_machine_info], [chmod +x tests/perftest/get_machine_info])
1567 AC_CONFIG_FILES([xapian-config], [chmod +x xapian-config])
1568 AC_CONFIG_FILES([makemanpage], [chmod +x makemanpage])
1569 AC_OUTPUT
1571 dnl There are no files generated by AC_OUTPUT in the following directories
1572 dnl and we need to ensure they exist so that the rest of configure or make
1573 dnl won't fail because they don't exist when srcdir != builddir.
1574 if test yes = "$vpath_build" ; then
1575 for dir in include/xapian languages queryparser ; do
1576 AS_MKDIR_P(["$dir"])
1577 done
1578 fi
1580 dnl Generate include/xapian/version.h:
1582 dnl MAIN_VERSION is VERSION without any _git123 suffix.
1583 MAIN_VERSION="$MAJOR_VERSION.$MINOR_VERSION.$REVISION"
1584 cxxcpp_flags=-I.
1585 for backend in GLASS HONEY INMEMORY REMOTE ; do
1586 val=`eval echo "\\\$BUILD_BACKEND_${backend}_TRUE"`
1587 if test -z "$val" ; then
1588 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_HAS_${backend}_BACKEND"
1589 fi
1590 done
1592 if test yes = "$enable_64bit_docid" ; then
1593 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1594 else
1595 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_DOCID_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1596 fi
1598 if test yes = "$enable_64bit_termcount" ; then
1599 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1600 else
1601 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMCOUNT_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1602 fi
1604 if test yes = "$enable_64bit_termpos" ; then
1605 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMPOS_BASE_TYPE="`echo "$INT64_T"|sed 's/ /____/g'`
1606 else
1607 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TERMPOS_BASE_TYPE="`echo "$INT32_T"|sed 's/ /____/g'`
1608 fi
1610 dnl Always ought to be 64 bit.
1611 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_TOTALLENGTH_TYPE="`echo "unsigned $INT64_T"|sed 's/ /____/g'`
1613 dnl Make revision numbers in the API 64 bit for future-proofing.
1614 cxxcpp_flags="$cxxcpp_flags -DXAPIAN_REVISION_TYPE="`echo "unsigned $INT64_T"|sed 's/ /____/g'`
1616 dnl For GCC (and compilers which pretend to be GCC) and MSVC, we create some
1617 dnl ABI checks in the generated version.h, and $CXXFLAGS may contain options
1618 dnl which affect the ABI (e.g. -fabi-version for GCC) so we want to use these
1619 dnl options when generating version.h. For these compilers, CXXCPP="$CXX -E"
1620 dnl so it should understand all compiler options.
1621 dnl
1622 dnl For other compilers, we only pass $CPPFLAGS to $CXXCPP in case it's an
1623 dnl external cpp which doesn't understand flags which might be in $CXXFLAGS.
1624 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef __GNUC__
1625 #ifndef _MSC_VER
1626 choke me
1627 #endif
1628 #endif
1629 ]])],
1630 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS $CXXFLAGS"],
1631 [cxxcpp_flags="$cxxcpp_flags $CPPFLAGS"])
1632 rm -f include/xapian/version.h.tmp
1633 dnl "\r" in sed is a GNUism, but we only need to remove it on MS Windows
1634 dnl where we'll always have GNU sed, and other sed's will just interpret
1635 dnl it as "r" (Solaris sed) or maybe literal "\r" which won't match.
1636 dnl
1637 dnl Use @@ around $MAIN_VERSION so we get " in the final output.
1638 $CXXCPP $cxxcpp_flags\
1639 -DSTRING_VERSION="\"@@$MAIN_VERSION@@\""\
1640 -DMAJOR_VERSION="\"$MAJOR_VERSION\""\
1641 -DMINOR_VERSION="\"$MINOR_VERSION\""\
1642 -DREVISION="\"$REVISION\""\
1643 $dash_d_visibility\
1644 $srcdir/include/xapian/version_h.cc|\
1645 ${SED-sed} '0,/const char \* dummy/d;/"/!d;s/^ *//;/^#/d;s/ *$//;s/" *,//;s/"//g;s/@@/"/g;s/ */ /g;s/ *,\r$//;s/ *,$//;s/____/ /g;s/\\\\$/\\/'\
1646 > include/xapian/version.h.tmp
1647 dnl Only update the file if it has changed, so we don't alter the timestamp
1648 dnl and cause lots of rebuilding needlessly. However, the build system
1649 dnl needs a timestamp to know when to regenerate version.h because version_h.cc
1650 dnl has changed so we use a separate timestamp file.
1651 touch include/xapian/version.h.timestamp
1652 if cmp include/xapian/version.h.tmp include/xapian/version.h >/dev/null 2>&1
1653 then
1654 rm include/xapian/version.h.tmp
1655 else
1656 mv include/xapian/version.h.tmp include/xapian/version.h
1657 fi
1659 if test "$enable_gpl_libxapian" != yes ; then
1660 AC_MSG_WARN([--disable-gpl-libxapian disables use of GPL code which we won't be able to relicense in libxapian - currently the resulting build still contains GPL code, but GPL code which it will be possible to relicense eventually.])
1661 fi