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Revision 392 - (hide annotations) (download)
Tue Mar 17 21:30:30 2009 UTC (5 years, 6 months ago) by ph10
File size: 25062 byte(s)
Update after detrailing for a test release.

1 nigel 87 dnl Process this file with autoconf to produce a configure script.
2    
3 ph10 99 dnl NOTE FOR MAINTAINERS: Do not use major or minor version numbers with
4     dnl leading zeros, because they may be treated as octal constants. The
5     dnl PCRE_PRERELEASE feature is for identifying release candidates. It might
6     dnl be defined as -RC2, for example. For real releases, it should be defined
7     dnl empty.
8    
9 ph10 367 m4_define(pcre_major, [7])
10 ph10 376 m4_define(pcre_minor, [9])
11     m4_define(pcre_prerelease, [-RC1])
12     m4_define(pcre_date, [2009-02-27])
13 nigel 87
14 ph10 97 # Libtool shared library interface versions (current:revision:age)
15     m4_define(libpcre_version, [0:1:0])
16     m4_define(libpcreposix_version, [0:0:0])
17     m4_define(libpcrecpp_version, [0:0:0])
18 nigel 87
19 ph10 97 AC_PREREQ(2.57)
20     AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
21     AC_CONFIG_SRCDIR([pcre.h.in])
22     AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
23     AC_CONFIG_HEADERS(config.h)
24 ph10 159
25     # The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
26     # "-g" for any other compiler. There doesn't seem to be a standard way of
27     # getting rid of the -g (which I don't think is needed for a production
28     # library). This fudge seems to achieve the necessary. First, we remember the
29     # externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
30     # AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
31     # set, they will be set to Autoconf's defaults. Afterwards, if the original
32     # values were not set, remove the -g from the Autoconf defaults.
33     # (PH 02-May-07)
34    
35     remember_set_CFLAGS="$CFLAGS"
36     remember_set_CXXFLAGS="$CXXFLAGS"
37    
38 ph10 97 AC_PROG_CC
39     AC_PROG_CXX
40 ph10 159
41     if test "x$remember_set_CFLAGS" = "x"
42     then
43     if test "$CFLAGS" = "-g -O2"
44     then
45     CFLAGS="-O2"
46     elif test "$CFLAGS" = "-g"
47     then
48     CFLAGS=""
49     fi
50     fi
51    
52     if test "x$remember_set_CXXFLAGS" = "x"
53     then
54     if test "$CXXFLAGS" = "-g -O2"
55     then
56     CXXFLAGS="-O2"
57     elif test "$CXXFLAGS" = "-g"
58     then
59     CXXFLAGS=""
60     fi
61     fi
62    
63 ph10 330 # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
64     # Check for that case, and just disable c++ code if g++ doesn't run.
65     AC_LANG_PUSH(C++)
66     AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")
67     AC_LANG_POP
68 ph10 159
69 ph10 97 AC_PROG_INSTALL
70     AC_LIBTOOL_WIN32_DLL
71     AC_PROG_LIBTOOL
72 ph10 137 AC_PROG_LN_S
73 nigel 87
74 ph10 97 PCRE_MAJOR="pcre_major"
75     PCRE_MINOR="pcre_minor"
76     PCRE_PRERELEASE="pcre_prerelease"
77     PCRE_DATE="pcre_date"
78 nigel 87
79 ph10 97 AC_SUBST(PCRE_MAJOR)
80     AC_SUBST(PCRE_MINOR)
81     AC_SUBST(PCRE_PRERELEASE)
82     AC_SUBST(PCRE_DATE)
83 nigel 87
84 ph10 97 # Set a more sensible default value for $(htmldir).
85     if test "x$htmldir" = 'x${docdir}'
86     then
87     htmldir='${docdir}/html'
88     fi
89 nigel 87
90 ph10 97 # Handle --disable-cpp
91     AC_ARG_ENABLE(cpp,
92     AS_HELP_STRING([--disable-cpp],
93     [disable C++ support]),
94     , enable_cpp=yes)
95 nigel 87
96 ph10 128 # Handle --enable-rebuild-chartables
97     AC_ARG_ENABLE(rebuild-chartables,
98     AS_HELP_STRING([--enable-rebuild-chartables],
99     [rebuild character tables in current locale]),
100     , enable_rebuild_chartables=no)
101    
102 ph10 97 # Handle --enable-utf8 (disabled by default)
103     AC_ARG_ENABLE(utf8,
104     AS_HELP_STRING([--enable-utf8],
105 ph10 391 [enable UTF-8 support (incompatible with --enable-ebcdic)]),
106 ph10 97 , enable_utf8=unset)
107 nigel 87
108 ph10 97 # Handle --enable-unicode-properties
109     AC_ARG_ENABLE(unicode-properties,
110     AS_HELP_STRING([--enable-unicode-properties],
111     [enable Unicode properties support (implies --enable-utf8)]),
112     , enable_unicode_properties=no)
113 nigel 87
114 ph10 97 # Handle --enable-newline=NL
115     dnl AC_ARG_ENABLE(newline,
116     dnl AS_HELP_STRING([--enable-newline=NL],
117 ph10 149 dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
118 ph10 97 dnl , enable_newline=lf)
119 nigel 87
120 ph10 97 # Separate newline options
121     ac_pcre_newline=lf
122     AC_ARG_ENABLE(newline-is-cr,
123     AS_HELP_STRING([--enable-newline-is-cr],
124     [use CR as newline character]),
125     ac_pcre_newline=cr)
126     AC_ARG_ENABLE(newline-is-lf,
127     AS_HELP_STRING([--enable-newline-is-lf],
128     [use LF as newline character (default)]),
129     ac_pcre_newline=lf)
130     AC_ARG_ENABLE(newline-is-crlf,
131     AS_HELP_STRING([--enable-newline-is-crlf],
132     [use CRLF as newline sequence]),
133     ac_pcre_newline=crlf)
134 ph10 149 AC_ARG_ENABLE(newline-is-anycrlf,
135     AS_HELP_STRING([--enable-newline-is-anycrlf],
136     [use CR, LF, or CRLF as newline sequence]),
137     ac_pcre_newline=anycrlf)
138 ph10 97 AC_ARG_ENABLE(newline-is-any,
139     AS_HELP_STRING([--enable-newline-is-any],
140     [use any valid Unicode newline sequence]),
141     ac_pcre_newline=any)
142     enable_newline="$ac_pcre_newline"
143 nigel 87
144 ph10 231 # Handle --enable-bsr-anycrlf
145     AC_ARG_ENABLE(bsr-anycrlf,
146     AS_HELP_STRING([--enable-bsr-anycrlf],
147     [\R matches only CR, LF, CRLF by default]),
148     , enable_bsr_anycrlf=no)
149    
150 ph10 97 # Handle --enable-ebcdic
151     AC_ARG_ENABLE(ebcdic,
152     AS_HELP_STRING([--enable-ebcdic],
153 ph10 391 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf8; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
154 ph10 97 , enable_ebcdic=no)
155 nigel 87
156 ph10 97 # Handle --disable-stack-for-recursion
157     AC_ARG_ENABLE(stack-for-recursion,
158     AS_HELP_STRING([--disable-stack-for-recursion],
159     [don't use stack recursion when matching]),
160     , enable_stack_for_recursion=yes)
161 nigel 87
162 ph10 286 # Handle --enable-pcregrep-libz
163     AC_ARG_ENABLE(pcregrep-libz,
164     AS_HELP_STRING([--enable-pcregrep-libz],
165     [link pcregrep with libz to handle .gz files]),
166     , enable_pcregrep_libz=no)
167    
168     # Handle --enable-pcregrep-libbz2
169     AC_ARG_ENABLE(pcregrep-libbz2,
170     AS_HELP_STRING([--enable-pcregrep-libbz2],
171     [link pcregrep with libbz2 to handle .bz2 files]),
172     , enable_pcregrep_libbz2=no)
173    
174 ph10 287 # Handle --enable-pcretest-libreadline
175     AC_ARG_ENABLE(pcretest-libreadline,
176     AS_HELP_STRING([--enable-pcretest-libreadline],
177     [link pcretest with libreadline]),
178     , enable_pcretest_libreadline=no)
179    
180 ph10 97 # Handle --with-posix-malloc-threshold=NBYTES
181     AC_ARG_WITH(posix-malloc-threshold,
182     AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
183     [threshold for POSIX malloc usage (default=10)]),
184     , with_posix_malloc_threshold=10)
185 nigel 87
186 ph10 97 # Handle --with-link-size=N
187     AC_ARG_WITH(link-size,
188     AS_HELP_STRING([--with-link-size=N],
189     [internal link size (2, 3, or 4 allowed; default=2)]),
190     , with_link_size=2)
191 nigel 87
192 ph10 97 # Handle --with-match-limit=N
193     AC_ARG_WITH(match-limit,
194     AS_HELP_STRING([--with-match-limit=N],
195     [default limit on internal looping (default=10000000)]),
196     , with_match_limit=10000000)
197 nigel 87
198 ph10 97 # Handle --with-match-limit_recursion=N
199     #
200     # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
201     # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
202     # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
203     # different numeric value (or even the same numeric value as MATCH_LIMIT,
204     # though no longer defined in terms of the latter).
205     #
206     AC_ARG_WITH(match-limit-recursion,
207     AS_HELP_STRING([--with-match-limit-recursion=N],
208     [default limit on internal recursion (default=MATCH_LIMIT)]),
209     , with_match_limit_recursion=MATCH_LIMIT)
210 nigel 87
211 ph10 97 # Make sure that if enable_unicode_properties was set, that UTF-8 support
212     # is enabled.
213     #
214     if test "x$enable_unicode_properties" = "xyes"
215     then
216     if test "x$enable_utf8" = "xno"
217     then
218     AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
219     fi
220     enable_utf8=yes
221     fi
222 nigel 87
223 ph10 97 if test "x$enable_utf8" = "xunset"
224     then
225     enable_utf8=no
226     fi
227 nigel 87
228 ph10 128 # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
229 ph10 391 # Also check that UTF-8 support is not requested, because PCRE cannot handle
230     # EBCDIC and UTF-8 in the same build. To do so it would need to use different
231     # character constants depending on the mode.
232 ph10 128 #
233 ph10 137 if test "x$enable_ebcdic" = "xyes"
234 ph10 128 then
235     enable_rebuild_chartables=yes
236 ph10 391 if test "x$enable_utf8" = "xyes"
237     then
238     AC_MSG_ERROR([support for EBCDIC and UTF-8 cannot be enabled at the same time])
239     fi
240 ph10 128 fi
241    
242 ph10 97 # Convert the newline identifier into the appropriate integer value.
243     case "$enable_newline" in
244 ph10 149 lf) ac_pcre_newline_value=10 ;;
245     cr) ac_pcre_newline_value=13 ;;
246     crlf) ac_pcre_newline_value=3338 ;;
247 ph10 150 anycrlf) ac_pcre_newline_value=-2 ;;
248 ph10 149 any) ac_pcre_newline_value=-1 ;;
249 ph10 97 *)
250     AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
251     ;;
252     esac
253 nigel 87
254 ph10 97 # Check argument to --with-link-size
255     case "$with_link_size" in
256     2|3|4) ;;
257     *)
258     AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
259     ;;
260     esac
261 nigel 87
262 ph10 97 AH_TOP([
263 ph10 100 /* On Unix-like systems config.h.in is converted by "configure" into config.h.
264     Some other environments also support the use of "configure". PCRE is written in
265     Standard C, but there are a few non-standard things it can cope with, allowing
266     it to run on SunOS4 and other "close to standard" systems.
267 nigel 87
268 ph10 111 If you are going to build PCRE "by hand" on a system without "configure" you
269     should copy the distributed config.h.generic to config.h, and then set up the
270 ph10 237 macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
271     all of your compile commands, so that config.h is included at the start of
272     every source.
273 nigel 87
274 ph10 237 Alternatively, you can avoid editing by using -D on the compiler command line
275     to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
276    
277 ph10 111 PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
278     HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
279     them both to 0; an emulation function will be used. */])
280 ph10 100
281 ph10 97 # Checks for header files.
282 nigel 87 AC_HEADER_STDC
283 ph10 97 AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
284 nigel 87
285 ph10 97 # The files below are C++ header files.
286     pcre_have_type_traits="0"
287     pcre_have_bits_type_traits="0"
288     if test "x$enable_cpp" = "xyes" -a -n "$CXX"
289 nigel 87 then
290 ph10 97 AC_LANG_PUSH(C++)
291 nigel 87
292 ph10 330 # Older versions of pcre defined pcrecpp::no_arg, but in new versions
293     # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
294     # we want to make one an alias for the other. Different systems do
295     # this in different ways. Some systems, for instance, can do it via
296     # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
297     OLD_LDFLAGS="$LDFLAGS"
298     for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
299     "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
300     AC_MSG_CHECKING([for alias support in the linker])
301     LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
302     # We try to run the linker with this new ld flag. If the link fails,
303     # we give up and remove the new flag from LDFLAGS.
304     AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
305     class RE { static int no_arg; };
306     int RE::no_arg;
307     }],
308     []),
309     [AC_MSG_RESULT([yes]);
310     EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
311     break;],
312     AC_MSG_RESULT([no]))
313     done
314     LDFLAGS="$OLD_LDFLAGS"
315    
316 ph10 97 # We could be more clever here, given we're doing AC_SUBST with this
317 ph10 127 # (eg set a var to be the name of the include file we want). But we're not
318 ph10 97 # so it's easy to change back to 'regular' autoconf vars if we needed to.
319 nigel 87 AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
320     [pcre_have_cpp_headers="0"])
321     AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
322     [pcre_have_bits_type_traits="0"])
323     AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
324     [pcre_have_type_traits="0"])
325 ph10 330
326 ph10 97 AC_LANG_POP
327     fi
328     # Using AC_SUBST eliminates the need to include config.h in a public .h file
329     AC_SUBST(pcre_have_type_traits)
330 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
331    
332 ph10 97 # Conditional compilation
333     AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
334 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
335 nigel 87
336 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
337 nigel 87
338     AC_C_CONST
339     AC_TYPE_SIZE_T
340    
341 ph10 321 pcre_have_strotolonglong=0
342     AC_CHECK_FUNCS(strtoq strtoll _strtoi64, [pcre_have_strotolonglong="1"; break])
343     # If we can't convert a string to a long long, pretend we don't even
344     # have a long long.
345     if test $pcre_have_strotolonglong = "0"; then
346     pcre_have_long_long="0"
347     pcre_have_ulong_long="0"
348     else
349     AC_CHECK_TYPES([long long],
350     [pcre_have_long_long="1"],
351     [pcre_have_long_long="0"])
352     AC_CHECK_TYPES([unsigned long long],
353     [pcre_have_ulong_long="1"],
354     [pcre_have_ulong_long="0"])
355     fi
356 nigel 87 AC_SUBST(pcre_have_long_long)
357     AC_SUBST(pcre_have_ulong_long)
358    
359 ph10 97 # Checks for library functions.
360 nigel 87
361 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
362 nigel 87
363 ph10 286 # Check for the availability of libz (aka zlib)
364    
365     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
366     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
367    
368     # Check for the availability of libbz2
369    
370     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
371     AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
372    
373 ph10 287 # Check for the availabiity of libreadline
374    
375     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
376     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
377     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
378    
379 ph10 97 # This facilitates -ansi builds under Linux
380     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
381 nigel 87
382 ph10 97 if test "x$enable_shared" = "xno" ; then
383     AC_DEFINE([PCRE_STATIC], [1], [
384     Define if linking statically (TODO: make nice with Libtool)])
385 nigel 87 fi
386    
387 ph10 97 # Here is where pcre specific defines are handled
388 nigel 87
389 ph10 97 if test "$enable_utf8" = "yes"; then
390     AC_DEFINE([SUPPORT_UTF8], [], [
391 ph10 391 Define to enable support for the UTF-8 Unicode encoding. This will
392     work even in an EBCDIC environment, but it is incompatible with
393     the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
394     *or* ASCII/UTF-8, but not both at once.])
395 nigel 87 fi
396    
397 ph10 97 if test "$enable_unicode_properties" = "yes"; then
398     AC_DEFINE([SUPPORT_UCP], [], [
399     Define to enable support for Unicode properties])
400     fi
401 nigel 87
402 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
403     AC_DEFINE([NO_RECURSE], [], [
404     PCRE uses recursive function calls to handle backtracking while
405 ph10 127 matching. This can sometimes be a problem on systems that have
406 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
407 ph10 97 doesn't use recursion in the match() function; instead it creates
408     its own stack by steam using pcre_recurse_malloc() to obtain memory
409     from the heap. For more detail, see the comments and other stuff
410     just above the match() function. On systems that support it,
411     "configure" can be used to set this in the Makefile
412     (use --disable-stack-for-recursion).])
413 nigel 87 fi
414    
415 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
416     AC_DEFINE([SUPPORT_LIBZ], [], [
417     Define to allow pcregrep to be linked with libz, so that it is
418     able to handle .gz files.])
419     fi
420    
421     if test "$enable_pcregrep_libbz2" = "yes"; then
422     AC_DEFINE([SUPPORT_LIBBZ2], [], [
423     Define to allow pcregrep to be linked with libbz2, so that it is
424     able to handle .bz2 files.])
425     fi
426    
427 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
428     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
429     Define to allow pcretest to be linked with libreadline.])
430 ph10 289 fi
431 ph10 287
432 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
433 ph10 111 The value of NEWLINE determines the newline character sequence. On
434 ph10 231 systems that support it, "configure" can be used to override the
435     default, which is 10. The possible values are 10 (LF), 13 (CR),
436     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
437 nigel 87
438 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
439     AC_DEFINE([BSR_ANYCRLF], [], [
440     By default, the \R escape sequence matches any Unicode line ending
441     character or sequence of characters. If BSR_ANYCRLF is defined, this is
442     changed so that backslash-R matches only CR, LF, or CRLF. The build-
443     time default can be overridden by the user of PCRE at runtime. On
444     systems that support it, "configure" can be used to override the
445     default.])
446     fi
447    
448 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
449     The value of LINK_SIZE determines the number of bytes used to store
450     links as offsets within the compiled regex. The default is 2, which
451     allows for compiled patterns up to 64K long. This covers the vast
452     majority of cases. However, PCRE can also be compiled to use 3 or 4
453     bytes instead. This allows for longer patterns in extreme cases. On
454     systems that support it, "configure" can be used to override this default.])
455 nigel 87
456 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
457     When calling PCRE via the POSIX interface, additional working storage
458     is required for holding the pointers to capturing substrings because
459     PCRE requires three integers per substring, whereas the POSIX
460     interface provides only two. If the number of expected substrings is
461     small, the wrapper function uses space on the stack, because this is
462     faster than using malloc() for each call. The threshold above which
463     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
464     systems that support it, "configure" can be used to override this
465     default.])
466 nigel 91
467 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
468     The value of MATCH_LIMIT determines the default number of times the
469     internal match() function can be called during a single execution of
470 ph10 100 pcre_exec(). There is a runtime interface for setting a different
471 ph10 97 limit. The limit exists in order to catch runaway regular
472     expressions that take for ever to determine that they do not match.
473     The default is set very large so that it does not accidentally catch
474     legitimate cases. On systems that support it, "configure" can be
475     used to override this default default.])
476 nigel 91
477 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
478     The above limit applies to all calls of match(), whether or not they
479     increase the recursion depth. In some environments it is desirable
480     to limit the depth of recursive calls of match() more strictly, in
481     order to restrict the maximum amount of stack (or heap, if
482     NO_RECURSE is defined) that is used. The value of
483     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
484     have any useful effect, it must be less than the value of
485 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
486     There is a runtime method for setting a different limit. On systems
487 ph10 100 that support it, "configure" can be used to override the default.])
488 nigel 93
489 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
490     This limit is parameterized just in case anybody ever wants to
491     change it. Care must be taken if it is increased, because it guards
492     against integer overflow caused by enormously large patterns.])
493 nigel 93
494 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
495     This limit is parameterized just in case anybody ever wants to
496     change it. Care must be taken if it is increased, because it guards
497     against integer overflow caused by enormously large patterns.])
498 nigel 87
499 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
500 ph10 97 /* If you are compiling for a system other than a Unix-like system or
501     Win32, and it needs some magic to be inserted before the definition
502     of a function that is exported by the library, define this macro to
503     contain the relevant magic. If you do not define this macro, it
504     defaults to "extern" for a C compiler and "extern C" for a C++
505     compiler on non-Win32 systems. This macro apears at the start of
506     every exported function that is part of the external API. It does
507     not appear on functions that are "external" in the C sense, but
508     which are internal to the library. */
509 ph10 145 #undef PCRE_EXP_DEFN])
510 nigel 87
511 ph10 97 if test "$enable_ebcdic" = "yes"; then
512     AC_DEFINE_UNQUOTED([EBCDIC], [], [
513     If you are compiling for a system that uses EBCDIC instead of ASCII
514     character codes, define this macro as 1. On systems that can use
515 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
516 ph10 392 assume that all input strings are in EBCDIC. If you do not define
517     this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
518 ph10 391 It is not possible to build a version of PCRE that supports both
519     EBCDIC and UTF-8.])
520 nigel 87 fi
521    
522 ph10 97 # Platform specific issues
523     NO_UNDEFINED=
524     EXPORT_ALL_SYMBOLS=
525     case $host_os in
526     cygwin* | mingw* )
527     if test X"$enable_shared" = Xyes; then
528     NO_UNDEFINED="-no-undefined"
529     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
530     fi
531     ;;
532     esac
533 nigel 87
534 ph10 97 # The extra LDFLAGS for each particular library
535     # (Note: The libpcre*_version bits are m4 variables, assigned above)
536 nigel 87
537 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
538     $NO_UNDEFINED -version-info libpcre_version"
539 nigel 87
540 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
541     $NO_UNDEFINED -version-info libpcreposix_version"
542 nigel 87
543 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
544     $NO_UNDEFINED -version-info libpcrecpp_version \
545     $EXPORT_ALL_SYMBOLS"
546 nigel 87
547 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
548     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
549     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
550 nigel 87
551 ph10 97 # When we run 'make distcheck', use these arguments.
552     DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
553     AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
554 nigel 87
555 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
556 ph10 376 # specified, the relevant library is available.
557 ph10 286
558     if test "$enable_pcregrep_libz" = "yes"; then
559     if test "$HAVE_ZLIB_H" != "1"; then
560     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
561     exit 1
562     fi
563     if test "$HAVE_LIBZ" != "1"; then
564     echo "** Cannot --enable-pcregrep-libz because libz was not found"
565     exit 1
566     fi
567 ph10 376 LIBZ="-lz"
568 ph10 286 fi
569 ph10 376 AC_SUBST(LIBZ)
570 ph10 286
571     if test "$enable_pcregrep_libbz2" = "yes"; then
572     if test "$HAVE_BZLIB_H" != "1"; then
573     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
574     exit 1
575     fi
576     if test "$HAVE_LIBBZ2" != "1"; then
577     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
578     exit 1
579     fi
580 ph10 376 LIBBZ2="-lbz2"
581 ph10 286 fi
582 ph10 376 AC_SUBST(LIBBZ2)
583 ph10 286
584 ph10 287 # Similarly for --enable-pcretest-readline
585    
586     if test "$enable_pcretest_libreadline" = "yes"; then
587     if test "$HAVE_READLINE_H" != "1"; then
588     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
589     exit 1
590     fi
591     if test "$HAVE_HISTORY_H" != "1"; then
592     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
593     exit 1
594     fi
595 ph10 376 LIBREADLINE="-lreadline"
596 ph10 289 fi
597 ph10 376 AC_SUBST(LIBREADLINE)
598 ph10 287
599 ph10 97 # Produce these files, in addition to config.h.
600     AC_CONFIG_FILES(
601     Makefile
602     libpcre.pc
603     libpcrecpp.pc
604     pcre-config
605     pcre.h
606     pcre_stringpiece.h
607     pcrecpparg.h
608 nigel 87 )
609    
610 ph10 97 # Make the generated script files executable.
611 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
612 nigel 87
613 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
614     # creating it was changed by reconfiguration.
615 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
616 ph10 128
617 ph10 137 AC_OUTPUT
618 ph10 128
619 ph10 97 # Print out a nice little message after configure is run displaying your
620     # chosen options.
621 ph10 286
622 ph10 97 cat <<EOF
623 nigel 87
624 ph10 97 $PACKAGE-$VERSION configuration summary:
625 nigel 87
626 ph10 287 Install prefix .................. : ${prefix}
627     C preprocessor .................. : ${CPP}
628     C compiler ...................... : ${CC}
629     C++ preprocessor ................ : ${CXXCPP}
630     C++ compiler .................... : ${CXX}
631     Linker .......................... : ${LD}
632     C preprocessor flags ............ : ${CPPFLAGS}
633     C compiler flags ................ : ${CFLAGS}
634     C++ compiler flags .............. : ${CXXFLAGS}
635     Linker flags .................... : ${LDFLAGS}
636     Extra libraries ................. : ${LIBS}
637 ph10 289
638 ph10 287 Build C++ library ............... : ${enable_cpp}
639     Enable UTF-8 support ............ : ${enable_utf8}
640     Unicode properties .............. : ${enable_unicode_properties}
641     Newline char/sequence ........... : ${enable_newline}
642     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
643     EBCDIC coding ................... : ${enable_ebcdic}
644     Rebuild char tables ............. : ${enable_rebuild_chartables}
645     Use stack recursion ............. : ${enable_stack_for_recursion}
646     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
647     Internal link size .............. : ${with_link_size}
648     Match limit ..................... : ${with_match_limit}
649     Match limit recursion ........... : ${with_match_limit_recursion}
650     Build shared libs ............... : ${enable_shared}
651     Build static libs ............... : ${enable_static}
652     Link pcregrep with libz ......... : ${enable_pcregrep_libz}
653     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
654 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
655 nigel 87
656 ph10 97 EOF
657 nigel 87
658 ph10 97 dnl end configure.ac

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