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Revision 697 - (hide annotations) (download)
Mon Sep 19 12:28:24 2011 UTC (3 years, 2 months ago) by ph10
File size: 29721 byte(s)
Fix minimum length bug with *ACCEPT.

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 666 m4_define(pcre_minor, [20])
13 ph10 697 m4_define(pcre_prerelease, [-RC2])
14     m4_define(pcre_date, [2011-09-18])
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 492 # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
108     # pcre-config.
109 ph10 97 AC_ARG_ENABLE(cpp,
110     AS_HELP_STRING([--disable-cpp],
111     [disable C++ support]),
112     , enable_cpp=yes)
113 ph10 507 AC_SUBST(enable_cpp)
114 nigel 87
115 ph10 666 # Handle --enable-jit (disabled by default)
116     AC_ARG_ENABLE(jit,
117     AS_HELP_STRING([--enable-jit],
118     [enable Just-In-Time compiling support]),
119     , enable_jit=no)
120    
121 ph10 685 # Handle --disable-pcregrep-jit (enabled by default)
122     AC_ARG_ENABLE(pcregrep-jit,
123     AS_HELP_STRING([--disable-pcregrep-jit],
124     [disable JIT support in pcregrep]),
125     , enable_pcregrep_jit=yes)
126    
127 ph10 128 # Handle --enable-rebuild-chartables
128     AC_ARG_ENABLE(rebuild-chartables,
129     AS_HELP_STRING([--enable-rebuild-chartables],
130     [rebuild character tables in current locale]),
131     , enable_rebuild_chartables=no)
132    
133 ph10 97 # Handle --enable-utf8 (disabled by default)
134     AC_ARG_ENABLE(utf8,
135     AS_HELP_STRING([--enable-utf8],
136 ph10 391 [enable UTF-8 support (incompatible with --enable-ebcdic)]),
137 ph10 97 , enable_utf8=unset)
138 nigel 87
139 ph10 97 # Handle --enable-unicode-properties
140     AC_ARG_ENABLE(unicode-properties,
141     AS_HELP_STRING([--enable-unicode-properties],
142     [enable Unicode properties support (implies --enable-utf8)]),
143     , enable_unicode_properties=no)
144 nigel 87
145 ph10 97 # Handle --enable-newline=NL
146     dnl AC_ARG_ENABLE(newline,
147     dnl AS_HELP_STRING([--enable-newline=NL],
148 ph10 149 dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
149 ph10 97 dnl , enable_newline=lf)
150 nigel 87
151 ph10 97 # Separate newline options
152     ac_pcre_newline=lf
153     AC_ARG_ENABLE(newline-is-cr,
154     AS_HELP_STRING([--enable-newline-is-cr],
155     [use CR as newline character]),
156     ac_pcre_newline=cr)
157     AC_ARG_ENABLE(newline-is-lf,
158     AS_HELP_STRING([--enable-newline-is-lf],
159     [use LF as newline character (default)]),
160     ac_pcre_newline=lf)
161     AC_ARG_ENABLE(newline-is-crlf,
162     AS_HELP_STRING([--enable-newline-is-crlf],
163     [use CRLF as newline sequence]),
164     ac_pcre_newline=crlf)
165 ph10 149 AC_ARG_ENABLE(newline-is-anycrlf,
166     AS_HELP_STRING([--enable-newline-is-anycrlf],
167     [use CR, LF, or CRLF as newline sequence]),
168     ac_pcre_newline=anycrlf)
169 ph10 97 AC_ARG_ENABLE(newline-is-any,
170     AS_HELP_STRING([--enable-newline-is-any],
171     [use any valid Unicode newline sequence]),
172     ac_pcre_newline=any)
173     enable_newline="$ac_pcre_newline"
174 nigel 87
175 ph10 231 # Handle --enable-bsr-anycrlf
176     AC_ARG_ENABLE(bsr-anycrlf,
177     AS_HELP_STRING([--enable-bsr-anycrlf],
178     [\R matches only CR, LF, CRLF by default]),
179     , enable_bsr_anycrlf=no)
180    
181 ph10 97 # Handle --enable-ebcdic
182     AC_ARG_ENABLE(ebcdic,
183     AS_HELP_STRING([--enable-ebcdic],
184 ph10 391 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf8; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
185 ph10 97 , enable_ebcdic=no)
186 nigel 87
187 ph10 97 # Handle --disable-stack-for-recursion
188     AC_ARG_ENABLE(stack-for-recursion,
189     AS_HELP_STRING([--disable-stack-for-recursion],
190     [don't use stack recursion when matching]),
191     , enable_stack_for_recursion=yes)
192 nigel 87
193 ph10 286 # Handle --enable-pcregrep-libz
194     AC_ARG_ENABLE(pcregrep-libz,
195     AS_HELP_STRING([--enable-pcregrep-libz],
196     [link pcregrep with libz to handle .gz files]),
197     , enable_pcregrep_libz=no)
198    
199     # Handle --enable-pcregrep-libbz2
200     AC_ARG_ENABLE(pcregrep-libbz2,
201     AS_HELP_STRING([--enable-pcregrep-libbz2],
202     [link pcregrep with libbz2 to handle .bz2 files]),
203     , enable_pcregrep_libbz2=no)
204    
205 ph10 644 # Handle --with-pcregrep-bufsize=N
206     AC_ARG_WITH(pcregrep-bufsize,
207     AS_HELP_STRING([--with-pcregrep-bufsize=N],
208     [pcregrep buffer size (default=20480)]),
209     , with_pcregrep_bufsize=20480)
210    
211 ph10 287 # Handle --enable-pcretest-libreadline
212     AC_ARG_ENABLE(pcretest-libreadline,
213     AS_HELP_STRING([--enable-pcretest-libreadline],
214     [link pcretest with libreadline]),
215     , enable_pcretest_libreadline=no)
216    
217 ph10 97 # Handle --with-posix-malloc-threshold=NBYTES
218     AC_ARG_WITH(posix-malloc-threshold,
219     AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
220     [threshold for POSIX malloc usage (default=10)]),
221     , with_posix_malloc_threshold=10)
222 nigel 87
223 ph10 97 # Handle --with-link-size=N
224     AC_ARG_WITH(link-size,
225     AS_HELP_STRING([--with-link-size=N],
226     [internal link size (2, 3, or 4 allowed; default=2)]),
227     , with_link_size=2)
228 nigel 87
229 ph10 97 # Handle --with-match-limit=N
230     AC_ARG_WITH(match-limit,
231     AS_HELP_STRING([--with-match-limit=N],
232     [default limit on internal looping (default=10000000)]),
233     , with_match_limit=10000000)
234 nigel 87
235 ph10 97 # Handle --with-match-limit_recursion=N
236     #
237     # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
238     # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
239     # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
240     # different numeric value (or even the same numeric value as MATCH_LIMIT,
241     # though no longer defined in terms of the latter).
242     #
243     AC_ARG_WITH(match-limit-recursion,
244     AS_HELP_STRING([--with-match-limit-recursion=N],
245     [default limit on internal recursion (default=MATCH_LIMIT)]),
246     , with_match_limit_recursion=MATCH_LIMIT)
247 nigel 87
248 ph10 97 # Make sure that if enable_unicode_properties was set, that UTF-8 support
249     # is enabled.
250     #
251     if test "x$enable_unicode_properties" = "xyes"
252     then
253     if test "x$enable_utf8" = "xno"
254     then
255     AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
256     fi
257     enable_utf8=yes
258     fi
259 nigel 87
260 ph10 97 if test "x$enable_utf8" = "xunset"
261     then
262     enable_utf8=no
263     fi
264 nigel 87
265 ph10 128 # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
266 ph10 391 # Also check that UTF-8 support is not requested, because PCRE cannot handle
267     # EBCDIC and UTF-8 in the same build. To do so it would need to use different
268     # character constants depending on the mode.
269 ph10 128 #
270 ph10 137 if test "x$enable_ebcdic" = "xyes"
271 ph10 128 then
272     enable_rebuild_chartables=yes
273 ph10 391 if test "x$enable_utf8" = "xyes"
274     then
275     AC_MSG_ERROR([support for EBCDIC and UTF-8 cannot be enabled at the same time])
276     fi
277 ph10 128 fi
278    
279 ph10 97 # Convert the newline identifier into the appropriate integer value.
280     case "$enable_newline" in
281 ph10 149 lf) ac_pcre_newline_value=10 ;;
282     cr) ac_pcre_newline_value=13 ;;
283     crlf) ac_pcre_newline_value=3338 ;;
284 ph10 150 anycrlf) ac_pcre_newline_value=-2 ;;
285 ph10 149 any) ac_pcre_newline_value=-1 ;;
286 ph10 97 *)
287     AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
288     ;;
289     esac
290 nigel 87
291 ph10 97 # Check argument to --with-link-size
292     case "$with_link_size" in
293     2|3|4) ;;
294     *)
295     AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
296     ;;
297     esac
298 nigel 87
299 ph10 97 AH_TOP([
300 ph10 100 /* On Unix-like systems config.h.in is converted by "configure" into config.h.
301     Some other environments also support the use of "configure". PCRE is written in
302     Standard C, but there are a few non-standard things it can cope with, allowing
303     it to run on SunOS4 and other "close to standard" systems.
304 nigel 87
305 ph10 111 If you are going to build PCRE "by hand" on a system without "configure" you
306     should copy the distributed config.h.generic to config.h, and then set up the
307 ph10 237 macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
308     all of your compile commands, so that config.h is included at the start of
309     every source.
310 nigel 87
311 ph10 237 Alternatively, you can avoid editing by using -D on the compiler command line
312     to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
313    
314 ph10 111 PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
315     HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
316     them both to 0; an emulation function will be used. */])
317 ph10 100
318 ph10 97 # Checks for header files.
319 nigel 87 AC_HEADER_STDC
320 ph10 97 AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
321 nigel 87
322 ph10 97 # The files below are C++ header files.
323     pcre_have_type_traits="0"
324     pcre_have_bits_type_traits="0"
325     if test "x$enable_cpp" = "xyes" -a -n "$CXX"
326 nigel 87 then
327 ph10 97 AC_LANG_PUSH(C++)
328 nigel 87
329 ph10 330 # Older versions of pcre defined pcrecpp::no_arg, but in new versions
330     # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
331     # we want to make one an alias for the other. Different systems do
332     # this in different ways. Some systems, for instance, can do it via
333     # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
334     OLD_LDFLAGS="$LDFLAGS"
335     for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
336     "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
337     AC_MSG_CHECKING([for alias support in the linker])
338     LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
339     # We try to run the linker with this new ld flag. If the link fails,
340     # we give up and remove the new flag from LDFLAGS.
341 ph10 644 AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
342 ph10 330 class RE { static int no_arg; };
343     int RE::no_arg;
344     }],
345 ph10 644 [])],
346 ph10 330 [AC_MSG_RESULT([yes]);
347     EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
348     break;],
349     AC_MSG_RESULT([no]))
350     done
351     LDFLAGS="$OLD_LDFLAGS"
352    
353 ph10 97 # We could be more clever here, given we're doing AC_SUBST with this
354 ph10 127 # (eg set a var to be the name of the include file we want). But we're not
355 ph10 97 # so it's easy to change back to 'regular' autoconf vars if we needed to.
356 nigel 87 AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
357     [pcre_have_cpp_headers="0"])
358     AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
359     [pcre_have_bits_type_traits="0"])
360     AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
361     [pcre_have_type_traits="0"])
362 ph10 330
363 ph10 486 # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
364     # in a c++ context. This matters becuase strtoimax is C99 and may not
365     # be supported by the C++ compiler.)
366     # Figure out how to create a longlong from a string: strtoll and
367     # equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a
368     # strtoll, for instance, but it only takes 2 args instead of 3!
369     # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
370     AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
371     AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
372     AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
373     AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
374     have_strto_fn=0
375 ph10 506 for fn in strtoq strtoll _strtoi64 strtoimax; do
376 ph10 486 AC_MSG_CHECKING([for $fn])
377     if test "$fn" = strtoimax; then
378     include=stdint.h
379     else
380     include=stdlib.h
381     fi
382 ph10 644 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
383     [char* e; return $fn("100", &e, 10)])],
384 ph10 486 [AC_MSG_RESULT(yes)
385     AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
386     [Define to 1 if you have `$fn'.])
387     have_strto_fn=1
388     break],
389     [AC_MSG_RESULT(no)])
390     done
391    
392     if test "$have_strto_fn" = 1; then
393     AC_CHECK_TYPES([long long],
394     [pcre_have_long_long="1"],
395     [pcre_have_long_long="0"])
396     AC_CHECK_TYPES([unsigned long long],
397     [pcre_have_ulong_long="1"],
398     [pcre_have_ulong_long="0"])
399     else
400     pcre_have_long_long="0"
401     pcre_have_ulong_long="0"
402     fi
403     AC_SUBST(pcre_have_long_long)
404     AC_SUBST(pcre_have_ulong_long)
405    
406 ph10 97 AC_LANG_POP
407     fi
408     # Using AC_SUBST eliminates the need to include config.h in a public .h file
409     AC_SUBST(pcre_have_type_traits)
410 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
411    
412 ph10 97 # Conditional compilation
413     AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
414 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
415 ph10 666 AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
416 ph10 690 AM_CONDITIONAL(WITH_UTF8, test "x$enable_utf8" = "xyes")
417 nigel 87
418 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
419 nigel 87
420     AC_C_CONST
421     AC_TYPE_SIZE_T
422    
423 ph10 97 # Checks for library functions.
424 nigel 87
425 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
426 nigel 87
427 ph10 286 # Check for the availability of libz (aka zlib)
428    
429     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
430     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
431    
432 ph10 478 # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
433     # as for libz. However, this had the following problem, diagnosed and fixed by
434     # a user:
435     #
436     # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
437     # under Win32.
438     # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
439     # therefore missing the function definition.
440     # - The compiler thus generates a "C" signature for the test function.
441     # - The linker fails to find the "C" function.
442     # - PCRE fails to configure if asked to do so against libbz2.
443     #
444     # Solution:
445     #
446     # - Replace the AC_CHECK_LIB test with a custom test.
447 ph10 286
448     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
449 ph10 478 # Original test
450     # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
451     #
452     # Custom test follows
453 ph10 286
454 ph10 478 AC_MSG_CHECKING([for libbz2])
455     OLD_LIBS="$LIBS"
456     LIBS="$LIBS -lbz2"
457 ph10 644 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
458 ph10 478 #ifdef HAVE_BZLIB_H
459     #include <bzlib.h>
460     #endif]],
461 ph10 644 [[return (int)BZ2_bzopen("conftest", "rb");]])],
462 ph10 478 [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
463     AC_MSG_RESULT([no]))
464     LIBS="$OLD_LIBS"
465    
466 ph10 287 # Check for the availabiity of libreadline
467    
468     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
469     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
470     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
471    
472 ph10 97 # This facilitates -ansi builds under Linux
473     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
474 nigel 87
475 ph10 430 PCRE_STATIC_CFLAG=""
476 ph10 97 if test "x$enable_shared" = "xno" ; then
477     AC_DEFINE([PCRE_STATIC], [1], [
478     Define if linking statically (TODO: make nice with Libtool)])
479 ph10 430 PCRE_STATIC_CFLAG="-DPCRE_STATIC"
480 nigel 87 fi
481 ph10 430 AC_SUBST(PCRE_STATIC_CFLAG)
482 nigel 87
483 ph10 97 # Here is where pcre specific defines are handled
484 nigel 87
485 ph10 666 if test "$enable_jit" = "yes"; then
486     AC_DEFINE([SUPPORT_JIT], [], [
487     Define to enable support for Just-In-Time compiling.])
488 ph10 685 else
489     enable_pcregrep_jit="no"
490 ph10 666 fi
491    
492 ph10 685 if test "$enable_pcregrep_jit" = "yes"; then
493     AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
494 ph10 691 Define to enable JIT support in pcregrep.])
495 ph10 685 fi
496    
497 ph10 97 if test "$enable_utf8" = "yes"; then
498     AC_DEFINE([SUPPORT_UTF8], [], [
499 ph10 391 Define to enable support for the UTF-8 Unicode encoding. This will
500     work even in an EBCDIC environment, but it is incompatible with
501     the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
502     *or* ASCII/UTF-8, but not both at once.])
503 nigel 87 fi
504    
505 ph10 97 if test "$enable_unicode_properties" = "yes"; then
506     AC_DEFINE([SUPPORT_UCP], [], [
507 ph10 666 Define to enable support for Unicode properties.])
508 ph10 97 fi
509 nigel 87
510 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
511     AC_DEFINE([NO_RECURSE], [], [
512     PCRE uses recursive function calls to handle backtracking while
513 ph10 127 matching. This can sometimes be a problem on systems that have
514 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
515 ph10 97 doesn't use recursion in the match() function; instead it creates
516     its own stack by steam using pcre_recurse_malloc() to obtain memory
517     from the heap. For more detail, see the comments and other stuff
518     just above the match() function. On systems that support it,
519     "configure" can be used to set this in the Makefile
520     (use --disable-stack-for-recursion).])
521 nigel 87 fi
522    
523 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
524     AC_DEFINE([SUPPORT_LIBZ], [], [
525     Define to allow pcregrep to be linked with libz, so that it is
526     able to handle .gz files.])
527     fi
528    
529     if test "$enable_pcregrep_libbz2" = "yes"; then
530     AC_DEFINE([SUPPORT_LIBBZ2], [], [
531     Define to allow pcregrep to be linked with libbz2, so that it is
532     able to handle .bz2 files.])
533     fi
534    
535 ph10 644 if test $with_pcregrep_bufsize -lt 8192 ; then
536     with_pcregrep_bufsize="8192"
537     fi
538 ph10 654
539 ph10 644 AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
540     The value of PCREGREP_BUFSIZE determines the size of buffer used by
541     pcregrep to hold parts of the file it is searching. On systems that
542     support it, "configure" can be used to override the default, which is
543     8192. This is also the minimum value. The actual amount of memory used by
544     pcregrep is three times this number, because it allows for the buffering of
545     "before" and "after" lines.])
546    
547 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
548     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
549     Define to allow pcretest to be linked with libreadline.])
550 ph10 289 fi
551 ph10 287
552 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
553 ph10 111 The value of NEWLINE determines the newline character sequence. On
554 ph10 231 systems that support it, "configure" can be used to override the
555     default, which is 10. The possible values are 10 (LF), 13 (CR),
556     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
557 nigel 87
558 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
559     AC_DEFINE([BSR_ANYCRLF], [], [
560     By default, the \R escape sequence matches any Unicode line ending
561     character or sequence of characters. If BSR_ANYCRLF is defined, this is
562     changed so that backslash-R matches only CR, LF, or CRLF. The build-
563     time default can be overridden by the user of PCRE at runtime. On
564     systems that support it, "configure" can be used to override the
565     default.])
566     fi
567    
568 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
569     The value of LINK_SIZE determines the number of bytes used to store
570     links as offsets within the compiled regex. The default is 2, which
571     allows for compiled patterns up to 64K long. This covers the vast
572     majority of cases. However, PCRE can also be compiled to use 3 or 4
573     bytes instead. This allows for longer patterns in extreme cases. On
574     systems that support it, "configure" can be used to override this default.])
575 nigel 87
576 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
577     When calling PCRE via the POSIX interface, additional working storage
578     is required for holding the pointers to capturing substrings because
579     PCRE requires three integers per substring, whereas the POSIX
580     interface provides only two. If the number of expected substrings is
581     small, the wrapper function uses space on the stack, because this is
582     faster than using malloc() for each call. The threshold above which
583     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
584     systems that support it, "configure" can be used to override this
585     default.])
586 nigel 91
587 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
588     The value of MATCH_LIMIT determines the default number of times the
589     internal match() function can be called during a single execution of
590 ph10 100 pcre_exec(). There is a runtime interface for setting a different
591 ph10 97 limit. The limit exists in order to catch runaway regular
592     expressions that take for ever to determine that they do not match.
593     The default is set very large so that it does not accidentally catch
594     legitimate cases. On systems that support it, "configure" can be
595     used to override this default default.])
596 nigel 91
597 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
598     The above limit applies to all calls of match(), whether or not they
599     increase the recursion depth. In some environments it is desirable
600     to limit the depth of recursive calls of match() more strictly, in
601     order to restrict the maximum amount of stack (or heap, if
602     NO_RECURSE is defined) that is used. The value of
603     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
604     have any useful effect, it must be less than the value of
605 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
606     There is a runtime method for setting a different limit. On systems
607 ph10 100 that support it, "configure" can be used to override the default.])
608 nigel 93
609 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
610     This limit is parameterized just in case anybody ever wants to
611     change it. Care must be taken if it is increased, because it guards
612     against integer overflow caused by enormously large patterns.])
613 nigel 93
614 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
615     This limit is parameterized just in case anybody ever wants to
616     change it. Care must be taken if it is increased, because it guards
617     against integer overflow caused by enormously large patterns.])
618 nigel 87
619 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
620 ph10 97 /* If you are compiling for a system other than a Unix-like system or
621     Win32, and it needs some magic to be inserted before the definition
622     of a function that is exported by the library, define this macro to
623     contain the relevant magic. If you do not define this macro, it
624     defaults to "extern" for a C compiler and "extern C" for a C++
625     compiler on non-Win32 systems. This macro apears at the start of
626     every exported function that is part of the external API. It does
627     not appear on functions that are "external" in the C sense, but
628     which are internal to the library. */
629 ph10 145 #undef PCRE_EXP_DEFN])
630 nigel 87
631 ph10 97 if test "$enable_ebcdic" = "yes"; then
632     AC_DEFINE_UNQUOTED([EBCDIC], [], [
633     If you are compiling for a system that uses EBCDIC instead of ASCII
634     character codes, define this macro as 1. On systems that can use
635 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
636 ph10 392 assume that all input strings are in EBCDIC. If you do not define
637     this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
638 ph10 391 It is not possible to build a version of PCRE that supports both
639     EBCDIC and UTF-8.])
640 nigel 87 fi
641    
642 ph10 97 # Platform specific issues
643     NO_UNDEFINED=
644     EXPORT_ALL_SYMBOLS=
645     case $host_os in
646     cygwin* | mingw* )
647     if test X"$enable_shared" = Xyes; then
648     NO_UNDEFINED="-no-undefined"
649     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
650     fi
651     ;;
652     esac
653 nigel 87
654 ph10 97 # The extra LDFLAGS for each particular library
655     # (Note: The libpcre*_version bits are m4 variables, assigned above)
656 nigel 87
657 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
658     $NO_UNDEFINED -version-info libpcre_version"
659 nigel 87
660 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
661     $NO_UNDEFINED -version-info libpcreposix_version"
662 nigel 87
663 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
664     $NO_UNDEFINED -version-info libpcrecpp_version \
665     $EXPORT_ALL_SYMBOLS"
666 nigel 87
667 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
668     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
669     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
670 nigel 87
671 ph10 97 # When we run 'make distcheck', use these arguments.
672 ph10 666 DISTCHECK_CONFIGURE_FLAGS="--enable-jit --enable-cpp --enable-unicode-properties"
673 ph10 97 AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
674 nigel 87
675 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
676 ph10 376 # specified, the relevant library is available.
677 ph10 286
678     if test "$enable_pcregrep_libz" = "yes"; then
679     if test "$HAVE_ZLIB_H" != "1"; then
680     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
681     exit 1
682     fi
683     if test "$HAVE_LIBZ" != "1"; then
684     echo "** Cannot --enable-pcregrep-libz because libz was not found"
685     exit 1
686     fi
687 ph10 376 LIBZ="-lz"
688 ph10 286 fi
689 ph10 376 AC_SUBST(LIBZ)
690 ph10 286
691     if test "$enable_pcregrep_libbz2" = "yes"; then
692     if test "$HAVE_BZLIB_H" != "1"; then
693     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
694     exit 1
695     fi
696     if test "$HAVE_LIBBZ2" != "1"; then
697     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
698     exit 1
699     fi
700 ph10 376 LIBBZ2="-lbz2"
701 ph10 286 fi
702 ph10 376 AC_SUBST(LIBBZ2)
703 ph10 286
704 ph10 287 # Similarly for --enable-pcretest-readline
705    
706     if test "$enable_pcretest_libreadline" = "yes"; then
707     if test "$HAVE_READLINE_H" != "1"; then
708     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
709     exit 1
710     fi
711     if test "$HAVE_HISTORY_H" != "1"; then
712     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
713     exit 1
714     fi
715 ph10 376 LIBREADLINE="-lreadline"
716 ph10 289 fi
717 ph10 376 AC_SUBST(LIBREADLINE)
718 ph10 287
719 ph10 97 # Produce these files, in addition to config.h.
720     AC_CONFIG_FILES(
721     Makefile
722     libpcre.pc
723 ph10 423 libpcreposix.pc
724 ph10 97 libpcrecpp.pc
725     pcre-config
726     pcre.h
727     pcre_stringpiece.h
728     pcrecpparg.h
729 nigel 87 )
730    
731 ph10 97 # Make the generated script files executable.
732 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
733 nigel 87
734 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
735     # creating it was changed by reconfiguration.
736 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
737 ph10 128
738 ph10 137 AC_OUTPUT
739 ph10 128
740 ph10 97 # Print out a nice little message after configure is run displaying your
741     # chosen options.
742 ph10 286
743 ph10 97 cat <<EOF
744 nigel 87
745 ph10 97 $PACKAGE-$VERSION configuration summary:
746 nigel 87
747 ph10 287 Install prefix .................. : ${prefix}
748     C preprocessor .................. : ${CPP}
749     C compiler ...................... : ${CC}
750     C++ preprocessor ................ : ${CXXCPP}
751     C++ compiler .................... : ${CXX}
752     Linker .......................... : ${LD}
753     C preprocessor flags ............ : ${CPPFLAGS}
754     C compiler flags ................ : ${CFLAGS}
755     C++ compiler flags .............. : ${CXXFLAGS}
756     Linker flags .................... : ${LDFLAGS}
757     Extra libraries ................. : ${LIBS}
758 ph10 289
759 ph10 287 Build C++ library ............... : ${enable_cpp}
760 ph10 666 Enable JIT compiling support .... : ${enable_jit}
761 ph10 287 Enable UTF-8 support ............ : ${enable_utf8}
762     Unicode properties .............. : ${enable_unicode_properties}
763     Newline char/sequence ........... : ${enable_newline}
764     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
765     EBCDIC coding ................... : ${enable_ebcdic}
766     Rebuild char tables ............. : ${enable_rebuild_chartables}
767     Use stack recursion ............. : ${enable_stack_for_recursion}
768     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
769     Internal link size .............. : ${with_link_size}
770     Match limit ..................... : ${with_match_limit}
771     Match limit recursion ........... : ${with_match_limit_recursion}
772     Build shared libs ............... : ${enable_shared}
773     Build static libs ............... : ${enable_static}
774 ph10 691 Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
775 ph10 654 Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
776 ph10 287 Link pcregrep with libz ......... : ${enable_pcregrep_libz}
777     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
778 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
779 nigel 87
780 ph10 97 EOF
781 nigel 87
782 ph10 97 dnl end configure.ac

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