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Revision 843 - (hide annotations) (download)
Sun Jan 1 14:36:56 2012 UTC (2 years, 6 months ago) by ph10
File size: 32105 byte(s)
Update pcre-config for 16-bit library and correct type on libpcre16.pc.in.

1 nigel 87 dnl Process this file with autoconf to produce a configure script.
2    
3 ph10 481 dnl NOTE FOR MAINTAINERS: Do not use minor version numbers 08 or 09 because
4     dnl the leading zeros may cause them to be treated as invalid octal constants
5     dnl if a PCRE user writes code that uses PCRE_MINOR as a number. There is now
6     dnl a check further down that throws an error if 08 or 09 are used.
7 ph10 99
8 ph10 481 dnl The PCRE_PRERELEASE feature is for identifying release candidates. It might
9     dnl be defined as -RC2, for example. For real releases, it should be empty.
10    
11 ph10 418 m4_define(pcre_major, [8])
12 ph10 836 m4_define(pcre_minor, [30])
13     m4_define(pcre_prerelease, [-PT1])
14     m4_define(pcre_date, [2012-01-01])
15 nigel 87
16 ph10 97 # Libtool shared library interface versions (current:revision:age)
17     m4_define(libpcre_version, [0:1:0])
18     m4_define(libpcreposix_version, [0:0:0])
19     m4_define(libpcrecpp_version, [0:0:0])
20 nigel 87
21 ph10 97 AC_PREREQ(2.57)
22     AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
23     AC_CONFIG_SRCDIR([pcre.h.in])
24     AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
25     AC_CONFIG_HEADERS(config.h)
26 ph10 159
27 ph10 479 # This was added at the suggestion of libtoolize (03-Jan-10)
28     AC_CONFIG_MACRO_DIR([m4])
29    
30 ph10 159 # The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
31     # "-g" for any other compiler. There doesn't seem to be a standard way of
32     # getting rid of the -g (which I don't think is needed for a production
33     # library). This fudge seems to achieve the necessary. First, we remember the
34     # externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
35     # AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
36     # set, they will be set to Autoconf's defaults. Afterwards, if the original
37     # values were not set, remove the -g from the Autoconf defaults.
38     # (PH 02-May-07)
39    
40     remember_set_CFLAGS="$CFLAGS"
41     remember_set_CXXFLAGS="$CXXFLAGS"
42    
43 ph10 97 AC_PROG_CC
44     AC_PROG_CXX
45 ph10 159
46     if test "x$remember_set_CFLAGS" = "x"
47     then
48     if test "$CFLAGS" = "-g -O2"
49     then
50     CFLAGS="-O2"
51     elif test "$CFLAGS" = "-g"
52     then
53     CFLAGS=""
54     fi
55     fi
56    
57     if test "x$remember_set_CXXFLAGS" = "x"
58     then
59     if test "$CXXFLAGS" = "-g -O2"
60     then
61     CXXFLAGS="-O2"
62     elif test "$CXXFLAGS" = "-g"
63     then
64     CXXFLAGS=""
65     fi
66     fi
67    
68 ph10 330 # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
69     # Check for that case, and just disable c++ code if g++ doesn't run.
70     AC_LANG_PUSH(C++)
71 ph10 644 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],, CXX=""; CXXCP=""; CXXFLAGS="")
72 ph10 330 AC_LANG_POP
73 ph10 159
74 ph10 475 # Check for a 64-bit integer type
75     AC_TYPE_INT64_T
76    
77 ph10 97 AC_PROG_INSTALL
78     AC_LIBTOOL_WIN32_DLL
79 ph10 644 LT_INIT
80 ph10 137 AC_PROG_LN_S
81 nigel 87
82 ph10 97 PCRE_MAJOR="pcre_major"
83     PCRE_MINOR="pcre_minor"
84     PCRE_PRERELEASE="pcre_prerelease"
85     PCRE_DATE="pcre_date"
86 nigel 87
87 ph10 481 if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09"
88     then
89     echo "***"
90     echo "*** Minor version number $PCRE_MINOR must not be used. ***"
91 ph10 487 echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
92     echo "***"
93 ph10 481 exit 1
94 ph10 487 fi
95 ph10 481
96 ph10 97 AC_SUBST(PCRE_MAJOR)
97     AC_SUBST(PCRE_MINOR)
98     AC_SUBST(PCRE_PRERELEASE)
99     AC_SUBST(PCRE_DATE)
100 nigel 87
101 ph10 97 # Set a more sensible default value for $(htmldir).
102     if test "x$htmldir" = 'x${docdir}'
103     then
104     htmldir='${docdir}/html'
105     fi
106 nigel 87
107 ph10 836 # Handle --disable-pcre8 (enabled by default)
108     AC_ARG_ENABLE(pcre8,
109     AS_HELP_STRING([--disable-pcre8],
110     [enable 8 bit character support]),
111     , enable_pcre8=unset)
112 ph10 843 AC_SUBST(enable_pcre8)
113 ph10 836
114     # Handle --enable-pcre16 (disabled by default)
115     AC_ARG_ENABLE(pcre16,
116     AS_HELP_STRING([--enable-pcre16],
117     [enable 16 bit character support]),
118     , enable_pcre16=unset)
119 ph10 843 AC_SUBST(enable_pcre16)
120 ph10 836
121 ph10 492 # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
122     # pcre-config.
123 ph10 97 AC_ARG_ENABLE(cpp,
124     AS_HELP_STRING([--disable-cpp],
125     [disable C++ support]),
126 ph10 836 , enable_cpp=unset)
127 ph10 507 AC_SUBST(enable_cpp)
128 nigel 87
129 ph10 666 # Handle --enable-jit (disabled by default)
130     AC_ARG_ENABLE(jit,
131     AS_HELP_STRING([--enable-jit],
132     [enable Just-In-Time compiling support]),
133     , enable_jit=no)
134    
135 ph10 685 # Handle --disable-pcregrep-jit (enabled by default)
136     AC_ARG_ENABLE(pcregrep-jit,
137     AS_HELP_STRING([--disable-pcregrep-jit],
138     [disable JIT support in pcregrep]),
139     , enable_pcregrep_jit=yes)
140    
141 ph10 128 # Handle --enable-rebuild-chartables
142     AC_ARG_ENABLE(rebuild-chartables,
143     AS_HELP_STRING([--enable-rebuild-chartables],
144     [rebuild character tables in current locale]),
145     , enable_rebuild_chartables=no)
146    
147 ph10 97 # Handle --enable-utf8 (disabled by default)
148     AC_ARG_ENABLE(utf8,
149     AS_HELP_STRING([--enable-utf8],
150 ph10 836 [another name for --enable-utf. Kept only for compatibility reasons]),
151 ph10 97 , enable_utf8=unset)
152 nigel 87
153 ph10 836 # Handle --enable-utf (disabled by default)
154     AC_ARG_ENABLE(utf,
155     AS_HELP_STRING([--enable-utf],
156     [enable UTF-8/16 support (incompatible with --enable-ebcdic)]),
157     , enable_utf=unset)
158    
159 ph10 97 # Handle --enable-unicode-properties
160     AC_ARG_ENABLE(unicode-properties,
161     AS_HELP_STRING([--enable-unicode-properties],
162 ph10 836 [enable Unicode properties support (implies --enable-utf)]),
163 ph10 97 , enable_unicode_properties=no)
164 nigel 87
165 ph10 97 # Handle --enable-newline=NL
166     dnl AC_ARG_ENABLE(newline,
167     dnl AS_HELP_STRING([--enable-newline=NL],
168 ph10 149 dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
169 ph10 97 dnl , enable_newline=lf)
170 nigel 87
171 ph10 97 # Separate newline options
172     ac_pcre_newline=lf
173     AC_ARG_ENABLE(newline-is-cr,
174     AS_HELP_STRING([--enable-newline-is-cr],
175     [use CR as newline character]),
176     ac_pcre_newline=cr)
177     AC_ARG_ENABLE(newline-is-lf,
178     AS_HELP_STRING([--enable-newline-is-lf],
179     [use LF as newline character (default)]),
180     ac_pcre_newline=lf)
181     AC_ARG_ENABLE(newline-is-crlf,
182     AS_HELP_STRING([--enable-newline-is-crlf],
183     [use CRLF as newline sequence]),
184     ac_pcre_newline=crlf)
185 ph10 149 AC_ARG_ENABLE(newline-is-anycrlf,
186     AS_HELP_STRING([--enable-newline-is-anycrlf],
187     [use CR, LF, or CRLF as newline sequence]),
188     ac_pcre_newline=anycrlf)
189 ph10 97 AC_ARG_ENABLE(newline-is-any,
190     AS_HELP_STRING([--enable-newline-is-any],
191     [use any valid Unicode newline sequence]),
192     ac_pcre_newline=any)
193     enable_newline="$ac_pcre_newline"
194 nigel 87
195 ph10 231 # Handle --enable-bsr-anycrlf
196     AC_ARG_ENABLE(bsr-anycrlf,
197     AS_HELP_STRING([--enable-bsr-anycrlf],
198     [\R matches only CR, LF, CRLF by default]),
199     , enable_bsr_anycrlf=no)
200    
201 ph10 97 # Handle --enable-ebcdic
202     AC_ARG_ENABLE(ebcdic,
203     AS_HELP_STRING([--enable-ebcdic],
204 ph10 836 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
205 ph10 97 , enable_ebcdic=no)
206 nigel 87
207 ph10 97 # Handle --disable-stack-for-recursion
208     AC_ARG_ENABLE(stack-for-recursion,
209     AS_HELP_STRING([--disable-stack-for-recursion],
210     [don't use stack recursion when matching]),
211     , enable_stack_for_recursion=yes)
212 nigel 87
213 ph10 286 # Handle --enable-pcregrep-libz
214     AC_ARG_ENABLE(pcregrep-libz,
215     AS_HELP_STRING([--enable-pcregrep-libz],
216     [link pcregrep with libz to handle .gz files]),
217     , enable_pcregrep_libz=no)
218    
219     # Handle --enable-pcregrep-libbz2
220     AC_ARG_ENABLE(pcregrep-libbz2,
221     AS_HELP_STRING([--enable-pcregrep-libbz2],
222     [link pcregrep with libbz2 to handle .bz2 files]),
223     , enable_pcregrep_libbz2=no)
224    
225 ph10 644 # Handle --with-pcregrep-bufsize=N
226     AC_ARG_WITH(pcregrep-bufsize,
227     AS_HELP_STRING([--with-pcregrep-bufsize=N],
228     [pcregrep buffer size (default=20480)]),
229     , with_pcregrep_bufsize=20480)
230    
231 ph10 287 # Handle --enable-pcretest-libreadline
232     AC_ARG_ENABLE(pcretest-libreadline,
233     AS_HELP_STRING([--enable-pcretest-libreadline],
234     [link pcretest with libreadline]),
235     , enable_pcretest_libreadline=no)
236    
237 ph10 97 # Handle --with-posix-malloc-threshold=NBYTES
238     AC_ARG_WITH(posix-malloc-threshold,
239     AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
240     [threshold for POSIX malloc usage (default=10)]),
241     , with_posix_malloc_threshold=10)
242 nigel 87
243 ph10 97 # Handle --with-link-size=N
244     AC_ARG_WITH(link-size,
245     AS_HELP_STRING([--with-link-size=N],
246     [internal link size (2, 3, or 4 allowed; default=2)]),
247     , with_link_size=2)
248 nigel 87
249 ph10 97 # Handle --with-match-limit=N
250     AC_ARG_WITH(match-limit,
251     AS_HELP_STRING([--with-match-limit=N],
252     [default limit on internal looping (default=10000000)]),
253     , with_match_limit=10000000)
254 nigel 87
255 ph10 97 # Handle --with-match-limit_recursion=N
256     #
257     # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
258     # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
259     # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
260     # different numeric value (or even the same numeric value as MATCH_LIMIT,
261     # though no longer defined in terms of the latter).
262     #
263     AC_ARG_WITH(match-limit-recursion,
264     AS_HELP_STRING([--with-match-limit-recursion=N],
265     [default limit on internal recursion (default=MATCH_LIMIT)]),
266     , with_match_limit_recursion=MATCH_LIMIT)
267 nigel 87
268 ph10 836 # Copy enable_utf8 value to enable_utf for compatibility reasons
269     if test "x$enable_utf8" != "xunset"
270     then
271     if test "x$enable_utf" != "xunset"
272     then
273     AC_MSG_ERROR([--enable/disable-utf8 is kept only for compatibility reasons and its value is copied to --enable/disable-utf. Newer code must use --enable/disable-utf alone.])
274     fi
275     enable_utf=$enable_utf8
276     fi
277    
278     # Set the default value for pcre8
279     if test "x$enable_pcre8" = "xunset"
280     then
281     enable_pcre8=yes
282     fi
283    
284     # Set the default value for pcre16
285     if test "x$enable_pcre16" = "xunset"
286     then
287     enable_pcre16=no
288     fi
289    
290     # Make sure enable_pcre8 or enable_pcre16 was set
291     if test "x$enable_pcre8$enable_pcre16" = "xnono"
292     then
293     AC_MSG_ERROR([Either 8 or 16 bit (or both) pcre library must be enabled])
294     fi
295    
296     # Make sure that if enable_unicode_properties was set, that UTF support is enabled.
297 ph10 97 if test "x$enable_unicode_properties" = "xyes"
298     then
299 ph10 836 if test "x$enable_utf" = "xno"
300 ph10 97 then
301 ph10 836 AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support])
302 ph10 97 fi
303 ph10 836 enable_utf=yes
304 ph10 97 fi
305 nigel 87
306 ph10 836 # enable_utf is disabled by default.
307     if test "x$enable_utf" = "xunset"
308 ph10 97 then
309 ph10 836 enable_utf=no
310 ph10 97 fi
311 nigel 87
312 ph10 836 # enable_cpp copies the value of enable_pcre8 by default
313     if test "x$enable_cpp" = "xunset"
314     then
315     enable_cpp=$enable_pcre8
316     fi
317    
318     # Make sure that if enable_cpp was set, that enable_pcre8 support is enabled
319     if test "x$enable_cpp" = "xyes"
320     then
321     if test "x$enable_pcre8" = "xno"
322     then
323     AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters])
324     fi
325     fi
326    
327 ph10 128 # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
328 ph10 836 # Also check that UTF support is not requested, because PCRE cannot handle
329     # EBCDIC and UTF in the same build. To do so it would need to use different
330 ph10 391 # character constants depending on the mode.
331 ph10 128 #
332 ph10 137 if test "x$enable_ebcdic" = "xyes"
333 ph10 128 then
334     enable_rebuild_chartables=yes
335 ph10 836 if test "x$enable_utf" = "xyes"
336 ph10 391 then
337 ph10 836 AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time])
338 ph10 391 fi
339 ph10 128 fi
340    
341 ph10 97 # Convert the newline identifier into the appropriate integer value.
342     case "$enable_newline" in
343 ph10 149 lf) ac_pcre_newline_value=10 ;;
344     cr) ac_pcre_newline_value=13 ;;
345     crlf) ac_pcre_newline_value=3338 ;;
346 ph10 150 anycrlf) ac_pcre_newline_value=-2 ;;
347 ph10 149 any) ac_pcre_newline_value=-1 ;;
348 ph10 97 *)
349     AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
350     ;;
351     esac
352 nigel 87
353 ph10 97 # Check argument to --with-link-size
354     case "$with_link_size" in
355     2|3|4) ;;
356     *)
357     AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
358     ;;
359     esac
360 nigel 87
361 ph10 97 AH_TOP([
362 ph10 100 /* On Unix-like systems config.h.in is converted by "configure" into config.h.
363     Some other environments also support the use of "configure". PCRE is written in
364     Standard C, but there are a few non-standard things it can cope with, allowing
365     it to run on SunOS4 and other "close to standard" systems.
366 nigel 87
367 ph10 111 If you are going to build PCRE "by hand" on a system without "configure" you
368     should copy the distributed config.h.generic to config.h, and then set up the
369 ph10 237 macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
370     all of your compile commands, so that config.h is included at the start of
371     every source.
372 nigel 87
373 ph10 237 Alternatively, you can avoid editing by using -D on the compiler command line
374     to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
375    
376 ph10 111 PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
377     HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
378     them both to 0; an emulation function will be used. */])
379 ph10 100
380 ph10 97 # Checks for header files.
381 nigel 87 AC_HEADER_STDC
382 ph10 97 AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
383 nigel 87
384 ph10 97 # The files below are C++ header files.
385     pcre_have_type_traits="0"
386     pcre_have_bits_type_traits="0"
387     if test "x$enable_cpp" = "xyes" -a -n "$CXX"
388 nigel 87 then
389 ph10 97 AC_LANG_PUSH(C++)
390 nigel 87
391 ph10 330 # Older versions of pcre defined pcrecpp::no_arg, but in new versions
392     # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
393     # we want to make one an alias for the other. Different systems do
394     # this in different ways. Some systems, for instance, can do it via
395     # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
396     OLD_LDFLAGS="$LDFLAGS"
397     for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
398     "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
399     AC_MSG_CHECKING([for alias support in the linker])
400     LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
401     # We try to run the linker with this new ld flag. If the link fails,
402     # we give up and remove the new flag from LDFLAGS.
403 ph10 644 AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
404 ph10 330 class RE { static int no_arg; };
405     int RE::no_arg;
406     }],
407 ph10 644 [])],
408 ph10 330 [AC_MSG_RESULT([yes]);
409     EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
410     break;],
411     AC_MSG_RESULT([no]))
412     done
413     LDFLAGS="$OLD_LDFLAGS"
414    
415 ph10 97 # We could be more clever here, given we're doing AC_SUBST with this
416 ph10 127 # (eg set a var to be the name of the include file we want). But we're not
417 ph10 97 # so it's easy to change back to 'regular' autoconf vars if we needed to.
418 nigel 87 AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
419     [pcre_have_cpp_headers="0"])
420     AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
421     [pcre_have_bits_type_traits="0"])
422     AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
423     [pcre_have_type_traits="0"])
424 ph10 330
425 ph10 486 # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
426     # in a c++ context. This matters becuase strtoimax is C99 and may not
427     # be supported by the C++ compiler.)
428     # Figure out how to create a longlong from a string: strtoll and
429     # equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a
430     # strtoll, for instance, but it only takes 2 args instead of 3!
431     # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
432     AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
433     AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
434     AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
435     AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
436     have_strto_fn=0
437 ph10 506 for fn in strtoq strtoll _strtoi64 strtoimax; do
438 ph10 486 AC_MSG_CHECKING([for $fn])
439     if test "$fn" = strtoimax; then
440     include=stdint.h
441     else
442     include=stdlib.h
443     fi
444 ph10 644 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
445     [char* e; return $fn("100", &e, 10)])],
446 ph10 486 [AC_MSG_RESULT(yes)
447     AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
448     [Define to 1 if you have `$fn'.])
449     have_strto_fn=1
450     break],
451     [AC_MSG_RESULT(no)])
452     done
453    
454     if test "$have_strto_fn" = 1; then
455     AC_CHECK_TYPES([long long],
456     [pcre_have_long_long="1"],
457     [pcre_have_long_long="0"])
458     AC_CHECK_TYPES([unsigned long long],
459     [pcre_have_ulong_long="1"],
460     [pcre_have_ulong_long="0"])
461     else
462     pcre_have_long_long="0"
463     pcre_have_ulong_long="0"
464     fi
465     AC_SUBST(pcre_have_long_long)
466     AC_SUBST(pcre_have_ulong_long)
467    
468 ph10 97 AC_LANG_POP
469     fi
470     # Using AC_SUBST eliminates the need to include config.h in a public .h file
471     AC_SUBST(pcre_have_type_traits)
472 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
473    
474 ph10 97 # Conditional compilation
475 ph10 836 AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes")
476     AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
477 ph10 97 AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
478 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
479 ph10 666 AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
480 ph10 836 AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
481 nigel 87
482 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
483 nigel 87
484     AC_C_CONST
485     AC_TYPE_SIZE_T
486    
487 ph10 97 # Checks for library functions.
488 nigel 87
489 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
490 nigel 87
491 ph10 286 # Check for the availability of libz (aka zlib)
492    
493     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
494     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
495    
496 ph10 478 # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
497     # as for libz. However, this had the following problem, diagnosed and fixed by
498     # a user:
499     #
500     # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
501     # under Win32.
502     # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
503     # therefore missing the function definition.
504     # - The compiler thus generates a "C" signature for the test function.
505     # - The linker fails to find the "C" function.
506     # - PCRE fails to configure if asked to do so against libbz2.
507     #
508     # Solution:
509     #
510     # - Replace the AC_CHECK_LIB test with a custom test.
511 ph10 286
512     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
513 ph10 478 # Original test
514     # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
515     #
516     # Custom test follows
517 ph10 286
518 ph10 478 AC_MSG_CHECKING([for libbz2])
519     OLD_LIBS="$LIBS"
520     LIBS="$LIBS -lbz2"
521 ph10 644 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
522 ph10 478 #ifdef HAVE_BZLIB_H
523     #include <bzlib.h>
524     #endif]],
525 ph10 644 [[return (int)BZ2_bzopen("conftest", "rb");]])],
526 ph10 478 [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
527     AC_MSG_RESULT([no]))
528     LIBS="$OLD_LIBS"
529    
530 ph10 287 # Check for the availabiity of libreadline
531    
532     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
533     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
534     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
535    
536 ph10 97 # This facilitates -ansi builds under Linux
537     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
538 nigel 87
539 ph10 430 PCRE_STATIC_CFLAG=""
540 ph10 97 if test "x$enable_shared" = "xno" ; then
541     AC_DEFINE([PCRE_STATIC], [1], [
542     Define if linking statically (TODO: make nice with Libtool)])
543 ph10 430 PCRE_STATIC_CFLAG="-DPCRE_STATIC"
544 nigel 87 fi
545 ph10 430 AC_SUBST(PCRE_STATIC_CFLAG)
546 nigel 87
547 ph10 97 # Here is where pcre specific defines are handled
548 nigel 87
549 ph10 836 if test "$enable_pcre8" = "yes"; then
550     AC_DEFINE([SUPPORT_PCRE8], [], [
551     Define to enable the 8 bit PCRE library.])
552     fi
553    
554     if test "$enable_pcre16" = "yes"; then
555     AC_DEFINE([SUPPORT_PCRE16], [], [
556     Define to enable the 16 bit PCRE library.])
557     fi
558    
559 ph10 666 if test "$enable_jit" = "yes"; then
560     AC_DEFINE([SUPPORT_JIT], [], [
561     Define to enable support for Just-In-Time compiling.])
562 ph10 685 else
563     enable_pcregrep_jit="no"
564 ph10 666 fi
565    
566 ph10 685 if test "$enable_pcregrep_jit" = "yes"; then
567     AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
568 ph10 691 Define to enable JIT support in pcregrep.])
569 ph10 685 fi
570    
571 ph10 836 if test "$enable_utf" = "yes"; then
572     AC_DEFINE([SUPPORT_UTF], [], [
573     Define to enable support for the UTF-8/16 Unicode encoding. This
574     will work even in an EBCDIC environment, but it is incompatible
575     with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
576     code *or* ASCII/UTF-8/16, but not both at once.])
577 nigel 87 fi
578    
579 ph10 97 if test "$enable_unicode_properties" = "yes"; then
580     AC_DEFINE([SUPPORT_UCP], [], [
581 ph10 666 Define to enable support for Unicode properties.])
582 ph10 97 fi
583 nigel 87
584 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
585     AC_DEFINE([NO_RECURSE], [], [
586     PCRE uses recursive function calls to handle backtracking while
587 ph10 127 matching. This can sometimes be a problem on systems that have
588 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
589 ph10 97 doesn't use recursion in the match() function; instead it creates
590     its own stack by steam using pcre_recurse_malloc() to obtain memory
591     from the heap. For more detail, see the comments and other stuff
592     just above the match() function. On systems that support it,
593     "configure" can be used to set this in the Makefile
594     (use --disable-stack-for-recursion).])
595 nigel 87 fi
596    
597 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
598     AC_DEFINE([SUPPORT_LIBZ], [], [
599     Define to allow pcregrep to be linked with libz, so that it is
600     able to handle .gz files.])
601     fi
602    
603     if test "$enable_pcregrep_libbz2" = "yes"; then
604     AC_DEFINE([SUPPORT_LIBBZ2], [], [
605     Define to allow pcregrep to be linked with libbz2, so that it is
606     able to handle .bz2 files.])
607     fi
608    
609 ph10 644 if test $with_pcregrep_bufsize -lt 8192 ; then
610     with_pcregrep_bufsize="8192"
611     fi
612 ph10 654
613 ph10 644 AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
614     The value of PCREGREP_BUFSIZE determines the size of buffer used by
615     pcregrep to hold parts of the file it is searching. On systems that
616     support it, "configure" can be used to override the default, which is
617     8192. This is also the minimum value. The actual amount of memory used by
618     pcregrep is three times this number, because it allows for the buffering of
619     "before" and "after" lines.])
620    
621 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
622     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
623     Define to allow pcretest to be linked with libreadline.])
624 ph10 289 fi
625 ph10 287
626 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
627 ph10 111 The value of NEWLINE determines the newline character sequence. On
628 ph10 231 systems that support it, "configure" can be used to override the
629     default, which is 10. The possible values are 10 (LF), 13 (CR),
630     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
631 nigel 87
632 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
633     AC_DEFINE([BSR_ANYCRLF], [], [
634     By default, the \R escape sequence matches any Unicode line ending
635     character or sequence of characters. If BSR_ANYCRLF is defined, this is
636     changed so that backslash-R matches only CR, LF, or CRLF. The build-
637     time default can be overridden by the user of PCRE at runtime. On
638     systems that support it, "configure" can be used to override the
639     default.])
640     fi
641    
642 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
643     The value of LINK_SIZE determines the number of bytes used to store
644     links as offsets within the compiled regex. The default is 2, which
645     allows for compiled patterns up to 64K long. This covers the vast
646     majority of cases. However, PCRE can also be compiled to use 3 or 4
647     bytes instead. This allows for longer patterns in extreme cases. On
648     systems that support it, "configure" can be used to override this default.])
649 nigel 87
650 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
651     When calling PCRE via the POSIX interface, additional working storage
652     is required for holding the pointers to capturing substrings because
653     PCRE requires three integers per substring, whereas the POSIX
654     interface provides only two. If the number of expected substrings is
655     small, the wrapper function uses space on the stack, because this is
656     faster than using malloc() for each call. The threshold above which
657     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
658     systems that support it, "configure" can be used to override this
659     default.])
660 nigel 91
661 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
662     The value of MATCH_LIMIT determines the default number of times the
663     internal match() function can be called during a single execution of
664 ph10 100 pcre_exec(). There is a runtime interface for setting a different
665 ph10 97 limit. The limit exists in order to catch runaway regular
666     expressions that take for ever to determine that they do not match.
667     The default is set very large so that it does not accidentally catch
668     legitimate cases. On systems that support it, "configure" can be
669     used to override this default default.])
670 nigel 91
671 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
672     The above limit applies to all calls of match(), whether or not they
673     increase the recursion depth. In some environments it is desirable
674     to limit the depth of recursive calls of match() more strictly, in
675     order to restrict the maximum amount of stack (or heap, if
676     NO_RECURSE is defined) that is used. The value of
677     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
678     have any useful effect, it must be less than the value of
679 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
680     There is a runtime method for setting a different limit. On systems
681 ph10 100 that support it, "configure" can be used to override the default.])
682 nigel 93
683 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
684     This limit is parameterized just in case anybody ever wants to
685     change it. Care must be taken if it is increased, because it guards
686     against integer overflow caused by enormously large patterns.])
687 nigel 93
688 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
689     This limit is parameterized just in case anybody ever wants to
690     change it. Care must be taken if it is increased, because it guards
691     against integer overflow caused by enormously large patterns.])
692 nigel 87
693 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
694 ph10 97 /* If you are compiling for a system other than a Unix-like system or
695     Win32, and it needs some magic to be inserted before the definition
696     of a function that is exported by the library, define this macro to
697     contain the relevant magic. If you do not define this macro, it
698     defaults to "extern" for a C compiler and "extern C" for a C++
699     compiler on non-Win32 systems. This macro apears at the start of
700     every exported function that is part of the external API. It does
701     not appear on functions that are "external" in the C sense, but
702     which are internal to the library. */
703 ph10 145 #undef PCRE_EXP_DEFN])
704 nigel 87
705 ph10 97 if test "$enable_ebcdic" = "yes"; then
706     AC_DEFINE_UNQUOTED([EBCDIC], [], [
707     If you are compiling for a system that uses EBCDIC instead of ASCII
708     character codes, define this macro as 1. On systems that can use
709 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
710 ph10 392 assume that all input strings are in EBCDIC. If you do not define
711 ph10 836 this macro, PCRE will assume input strings are ASCII or UTF-8/16
712     Unicode. It is not possible to build a version of PCRE that
713     supports both EBCDIC and UTF-8/16.])
714 nigel 87 fi
715    
716 ph10 97 # Platform specific issues
717     NO_UNDEFINED=
718     EXPORT_ALL_SYMBOLS=
719     case $host_os in
720     cygwin* | mingw* )
721     if test X"$enable_shared" = Xyes; then
722     NO_UNDEFINED="-no-undefined"
723     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
724     fi
725     ;;
726     esac
727 nigel 87
728 ph10 97 # The extra LDFLAGS for each particular library
729     # (Note: The libpcre*_version bits are m4 variables, assigned above)
730 nigel 87
731 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
732     $NO_UNDEFINED -version-info libpcre_version"
733 nigel 87
734 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
735     $NO_UNDEFINED -version-info libpcreposix_version"
736 nigel 87
737 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
738     $NO_UNDEFINED -version-info libpcrecpp_version \
739     $EXPORT_ALL_SYMBOLS"
740 nigel 87
741 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
742     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
743     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
744 nigel 87
745 ph10 97 # When we run 'make distcheck', use these arguments.
746 ph10 842 DISTCHECK_CONFIGURE_FLAGS="--enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
747 ph10 97 AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
748 nigel 87
749 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
750 ph10 376 # specified, the relevant library is available.
751 ph10 286
752     if test "$enable_pcregrep_libz" = "yes"; then
753     if test "$HAVE_ZLIB_H" != "1"; then
754     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
755     exit 1
756     fi
757     if test "$HAVE_LIBZ" != "1"; then
758     echo "** Cannot --enable-pcregrep-libz because libz was not found"
759     exit 1
760     fi
761 ph10 376 LIBZ="-lz"
762 ph10 286 fi
763 ph10 376 AC_SUBST(LIBZ)
764 ph10 286
765     if test "$enable_pcregrep_libbz2" = "yes"; then
766     if test "$HAVE_BZLIB_H" != "1"; then
767     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
768     exit 1
769     fi
770     if test "$HAVE_LIBBZ2" != "1"; then
771     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
772     exit 1
773     fi
774 ph10 376 LIBBZ2="-lbz2"
775 ph10 286 fi
776 ph10 376 AC_SUBST(LIBBZ2)
777 ph10 286
778 ph10 287 # Similarly for --enable-pcretest-readline
779    
780     if test "$enable_pcretest_libreadline" = "yes"; then
781     if test "$HAVE_READLINE_H" != "1"; then
782     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
783     exit 1
784     fi
785     if test "$HAVE_HISTORY_H" != "1"; then
786     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
787     exit 1
788     fi
789 ph10 376 LIBREADLINE="-lreadline"
790 ph10 289 fi
791 ph10 376 AC_SUBST(LIBREADLINE)
792 ph10 287
793 ph10 97 # Produce these files, in addition to config.h.
794     AC_CONFIG_FILES(
795     Makefile
796     libpcre.pc
797 ph10 836 libpcre16.pc
798     libpcreposix.pc
799 ph10 97 libpcrecpp.pc
800     pcre-config
801     pcre.h
802     pcre_stringpiece.h
803     pcrecpparg.h
804 nigel 87 )
805    
806 ph10 97 # Make the generated script files executable.
807 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
808 nigel 87
809 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
810     # creating it was changed by reconfiguration.
811 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
812 ph10 128
813 ph10 137 AC_OUTPUT
814 ph10 128
815 ph10 97 # Print out a nice little message after configure is run displaying your
816     # chosen options.
817 ph10 286
818 ph10 97 cat <<EOF
819 nigel 87
820 ph10 97 $PACKAGE-$VERSION configuration summary:
821 nigel 87
822 ph10 287 Install prefix .................. : ${prefix}
823     C preprocessor .................. : ${CPP}
824     C compiler ...................... : ${CC}
825     C++ preprocessor ................ : ${CXXCPP}
826     C++ compiler .................... : ${CXX}
827     Linker .......................... : ${LD}
828     C preprocessor flags ............ : ${CPPFLAGS}
829     C compiler flags ................ : ${CFLAGS}
830     C++ compiler flags .............. : ${CXXFLAGS}
831     Linker flags .................... : ${LDFLAGS}
832     Extra libraries ................. : ${LIBS}
833 ph10 289
834 ph10 836 Build 8 bit pcre library ........ : ${enable_pcre8}
835     Build 16 bit pcre library ....... : ${enable_pcre16}
836 ph10 287 Build C++ library ............... : ${enable_cpp}
837 ph10 666 Enable JIT compiling support .... : ${enable_jit}
838 ph10 836 Enable UTF-8/16 support ......... : ${enable_utf}
839 ph10 287 Unicode properties .............. : ${enable_unicode_properties}
840     Newline char/sequence ........... : ${enable_newline}
841     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
842     EBCDIC coding ................... : ${enable_ebcdic}
843     Rebuild char tables ............. : ${enable_rebuild_chartables}
844     Use stack recursion ............. : ${enable_stack_for_recursion}
845     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
846     Internal link size .............. : ${with_link_size}
847     Match limit ..................... : ${with_match_limit}
848     Match limit recursion ........... : ${with_match_limit_recursion}
849     Build shared libs ............... : ${enable_shared}
850     Build static libs ............... : ${enable_static}
851 ph10 691 Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
852 ph10 654 Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
853 ph10 287 Link pcregrep with libz ......... : ${enable_pcregrep_libz}
854     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
855 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
856 nigel 87
857 ph10 97 EOF
858 nigel 87
859 ph10 97 dnl end configure.ac

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