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Revision 548 - (hide annotations) (download)
Fri Jun 25 14:42:00 2010 UTC (4 years, 3 months ago) by ph10
File size: 27866 byte(s)
Final updates for 8.10 release.

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 513 m4_define(pcre_minor, [10])
13 ph10 546 m4_define(pcre_prerelease, [])
14 ph10 548 m4_define(pcre_date, [2010-06-25])
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     AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")
72     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     AC_PROG_LIBTOOL
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 128 # Handle --enable-rebuild-chartables
116     AC_ARG_ENABLE(rebuild-chartables,
117     AS_HELP_STRING([--enable-rebuild-chartables],
118     [rebuild character tables in current locale]),
119     , enable_rebuild_chartables=no)
120    
121 ph10 97 # Handle --enable-utf8 (disabled by default)
122     AC_ARG_ENABLE(utf8,
123     AS_HELP_STRING([--enable-utf8],
124 ph10 391 [enable UTF-8 support (incompatible with --enable-ebcdic)]),
125 ph10 97 , enable_utf8=unset)
126 nigel 87
127 ph10 97 # Handle --enable-unicode-properties
128     AC_ARG_ENABLE(unicode-properties,
129     AS_HELP_STRING([--enable-unicode-properties],
130     [enable Unicode properties support (implies --enable-utf8)]),
131     , enable_unicode_properties=no)
132 nigel 87
133 ph10 97 # Handle --enable-newline=NL
134     dnl AC_ARG_ENABLE(newline,
135     dnl AS_HELP_STRING([--enable-newline=NL],
136 ph10 149 dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
137 ph10 97 dnl , enable_newline=lf)
138 nigel 87
139 ph10 97 # Separate newline options
140     ac_pcre_newline=lf
141     AC_ARG_ENABLE(newline-is-cr,
142     AS_HELP_STRING([--enable-newline-is-cr],
143     [use CR as newline character]),
144     ac_pcre_newline=cr)
145     AC_ARG_ENABLE(newline-is-lf,
146     AS_HELP_STRING([--enable-newline-is-lf],
147     [use LF as newline character (default)]),
148     ac_pcre_newline=lf)
149     AC_ARG_ENABLE(newline-is-crlf,
150     AS_HELP_STRING([--enable-newline-is-crlf],
151     [use CRLF as newline sequence]),
152     ac_pcre_newline=crlf)
153 ph10 149 AC_ARG_ENABLE(newline-is-anycrlf,
154     AS_HELP_STRING([--enable-newline-is-anycrlf],
155     [use CR, LF, or CRLF as newline sequence]),
156     ac_pcre_newline=anycrlf)
157 ph10 97 AC_ARG_ENABLE(newline-is-any,
158     AS_HELP_STRING([--enable-newline-is-any],
159     [use any valid Unicode newline sequence]),
160     ac_pcre_newline=any)
161     enable_newline="$ac_pcre_newline"
162 nigel 87
163 ph10 231 # Handle --enable-bsr-anycrlf
164     AC_ARG_ENABLE(bsr-anycrlf,
165     AS_HELP_STRING([--enable-bsr-anycrlf],
166     [\R matches only CR, LF, CRLF by default]),
167     , enable_bsr_anycrlf=no)
168    
169 ph10 97 # Handle --enable-ebcdic
170     AC_ARG_ENABLE(ebcdic,
171     AS_HELP_STRING([--enable-ebcdic],
172 ph10 391 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf8; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
173 ph10 97 , enable_ebcdic=no)
174 nigel 87
175 ph10 97 # Handle --disable-stack-for-recursion
176     AC_ARG_ENABLE(stack-for-recursion,
177     AS_HELP_STRING([--disable-stack-for-recursion],
178     [don't use stack recursion when matching]),
179     , enable_stack_for_recursion=yes)
180 nigel 87
181 ph10 286 # Handle --enable-pcregrep-libz
182     AC_ARG_ENABLE(pcregrep-libz,
183     AS_HELP_STRING([--enable-pcregrep-libz],
184     [link pcregrep with libz to handle .gz files]),
185     , enable_pcregrep_libz=no)
186    
187     # Handle --enable-pcregrep-libbz2
188     AC_ARG_ENABLE(pcregrep-libbz2,
189     AS_HELP_STRING([--enable-pcregrep-libbz2],
190     [link pcregrep with libbz2 to handle .bz2 files]),
191     , enable_pcregrep_libbz2=no)
192    
193 ph10 287 # Handle --enable-pcretest-libreadline
194     AC_ARG_ENABLE(pcretest-libreadline,
195     AS_HELP_STRING([--enable-pcretest-libreadline],
196     [link pcretest with libreadline]),
197     , enable_pcretest_libreadline=no)
198    
199 ph10 97 # Handle --with-posix-malloc-threshold=NBYTES
200     AC_ARG_WITH(posix-malloc-threshold,
201     AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
202     [threshold for POSIX malloc usage (default=10)]),
203     , with_posix_malloc_threshold=10)
204 nigel 87
205 ph10 97 # Handle --with-link-size=N
206     AC_ARG_WITH(link-size,
207     AS_HELP_STRING([--with-link-size=N],
208     [internal link size (2, 3, or 4 allowed; default=2)]),
209     , with_link_size=2)
210 nigel 87
211 ph10 97 # Handle --with-match-limit=N
212     AC_ARG_WITH(match-limit,
213     AS_HELP_STRING([--with-match-limit=N],
214     [default limit on internal looping (default=10000000)]),
215     , with_match_limit=10000000)
216 nigel 87
217 ph10 97 # Handle --with-match-limit_recursion=N
218     #
219     # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
220     # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
221     # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
222     # different numeric value (or even the same numeric value as MATCH_LIMIT,
223     # though no longer defined in terms of the latter).
224     #
225     AC_ARG_WITH(match-limit-recursion,
226     AS_HELP_STRING([--with-match-limit-recursion=N],
227     [default limit on internal recursion (default=MATCH_LIMIT)]),
228     , with_match_limit_recursion=MATCH_LIMIT)
229 nigel 87
230 ph10 97 # Make sure that if enable_unicode_properties was set, that UTF-8 support
231     # is enabled.
232     #
233     if test "x$enable_unicode_properties" = "xyes"
234     then
235     if test "x$enable_utf8" = "xno"
236     then
237     AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
238     fi
239     enable_utf8=yes
240     fi
241 nigel 87
242 ph10 97 if test "x$enable_utf8" = "xunset"
243     then
244     enable_utf8=no
245     fi
246 nigel 87
247 ph10 128 # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
248 ph10 391 # Also check that UTF-8 support is not requested, because PCRE cannot handle
249     # EBCDIC and UTF-8 in the same build. To do so it would need to use different
250     # character constants depending on the mode.
251 ph10 128 #
252 ph10 137 if test "x$enable_ebcdic" = "xyes"
253 ph10 128 then
254     enable_rebuild_chartables=yes
255 ph10 391 if test "x$enable_utf8" = "xyes"
256     then
257     AC_MSG_ERROR([support for EBCDIC and UTF-8 cannot be enabled at the same time])
258     fi
259 ph10 128 fi
260    
261 ph10 97 # Convert the newline identifier into the appropriate integer value.
262     case "$enable_newline" in
263 ph10 149 lf) ac_pcre_newline_value=10 ;;
264     cr) ac_pcre_newline_value=13 ;;
265     crlf) ac_pcre_newline_value=3338 ;;
266 ph10 150 anycrlf) ac_pcre_newline_value=-2 ;;
267 ph10 149 any) ac_pcre_newline_value=-1 ;;
268 ph10 97 *)
269     AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
270     ;;
271     esac
272 nigel 87
273 ph10 97 # Check argument to --with-link-size
274     case "$with_link_size" in
275     2|3|4) ;;
276     *)
277     AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
278     ;;
279     esac
280 nigel 87
281 ph10 97 AH_TOP([
282 ph10 100 /* On Unix-like systems config.h.in is converted by "configure" into config.h.
283     Some other environments also support the use of "configure". PCRE is written in
284     Standard C, but there are a few non-standard things it can cope with, allowing
285     it to run on SunOS4 and other "close to standard" systems.
286 nigel 87
287 ph10 111 If you are going to build PCRE "by hand" on a system without "configure" you
288     should copy the distributed config.h.generic to config.h, and then set up the
289 ph10 237 macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
290     all of your compile commands, so that config.h is included at the start of
291     every source.
292 nigel 87
293 ph10 237 Alternatively, you can avoid editing by using -D on the compiler command line
294     to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
295    
296 ph10 111 PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
297     HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
298     them both to 0; an emulation function will be used. */])
299 ph10 100
300 ph10 97 # Checks for header files.
301 nigel 87 AC_HEADER_STDC
302 ph10 97 AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
303 nigel 87
304 ph10 97 # The files below are C++ header files.
305     pcre_have_type_traits="0"
306     pcre_have_bits_type_traits="0"
307     if test "x$enable_cpp" = "xyes" -a -n "$CXX"
308 nigel 87 then
309 ph10 97 AC_LANG_PUSH(C++)
310 nigel 87
311 ph10 330 # Older versions of pcre defined pcrecpp::no_arg, but in new versions
312     # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
313     # we want to make one an alias for the other. Different systems do
314     # this in different ways. Some systems, for instance, can do it via
315     # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
316     OLD_LDFLAGS="$LDFLAGS"
317     for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
318     "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
319     AC_MSG_CHECKING([for alias support in the linker])
320     LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
321     # We try to run the linker with this new ld flag. If the link fails,
322     # we give up and remove the new flag from LDFLAGS.
323     AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
324     class RE { static int no_arg; };
325     int RE::no_arg;
326     }],
327     []),
328     [AC_MSG_RESULT([yes]);
329     EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
330     break;],
331     AC_MSG_RESULT([no]))
332     done
333     LDFLAGS="$OLD_LDFLAGS"
334    
335 ph10 97 # We could be more clever here, given we're doing AC_SUBST with this
336 ph10 127 # (eg set a var to be the name of the include file we want). But we're not
337 ph10 97 # so it's easy to change back to 'regular' autoconf vars if we needed to.
338 nigel 87 AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
339     [pcre_have_cpp_headers="0"])
340     AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
341     [pcre_have_bits_type_traits="0"])
342     AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
343     [pcre_have_type_traits="0"])
344 ph10 330
345 ph10 486 # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
346     # in a c++ context. This matters becuase strtoimax is C99 and may not
347     # be supported by the C++ compiler.)
348     # Figure out how to create a longlong from a string: strtoll and
349     # equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a
350     # strtoll, for instance, but it only takes 2 args instead of 3!
351     # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
352     AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
353     AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
354     AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
355     AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
356     have_strto_fn=0
357 ph10 506 for fn in strtoq strtoll _strtoi64 strtoimax; do
358 ph10 486 AC_MSG_CHECKING([for $fn])
359     if test "$fn" = strtoimax; then
360     include=stdint.h
361     else
362     include=stdlib.h
363     fi
364     AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include <$include>],
365     [char* e; return $fn("100", &e, 10)]),
366     [AC_MSG_RESULT(yes)
367     AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
368     [Define to 1 if you have `$fn'.])
369     have_strto_fn=1
370     break],
371     [AC_MSG_RESULT(no)])
372     done
373    
374     if test "$have_strto_fn" = 1; then
375     AC_CHECK_TYPES([long long],
376     [pcre_have_long_long="1"],
377     [pcre_have_long_long="0"])
378     AC_CHECK_TYPES([unsigned long long],
379     [pcre_have_ulong_long="1"],
380     [pcre_have_ulong_long="0"])
381     else
382     pcre_have_long_long="0"
383     pcre_have_ulong_long="0"
384     fi
385     AC_SUBST(pcre_have_long_long)
386     AC_SUBST(pcre_have_ulong_long)
387    
388 ph10 97 AC_LANG_POP
389     fi
390     # Using AC_SUBST eliminates the need to include config.h in a public .h file
391     AC_SUBST(pcre_have_type_traits)
392 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
393    
394 ph10 97 # Conditional compilation
395     AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
396 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
397 nigel 87
398 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
399 nigel 87
400     AC_C_CONST
401     AC_TYPE_SIZE_T
402    
403 ph10 97 # Checks for library functions.
404 nigel 87
405 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
406 nigel 87
407 ph10 286 # Check for the availability of libz (aka zlib)
408    
409     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
410     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
411    
412 ph10 478 # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
413     # as for libz. However, this had the following problem, diagnosed and fixed by
414     # a user:
415     #
416     # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
417     # under Win32.
418     # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
419     # therefore missing the function definition.
420     # - The compiler thus generates a "C" signature for the test function.
421     # - The linker fails to find the "C" function.
422     # - PCRE fails to configure if asked to do so against libbz2.
423     #
424     # Solution:
425     #
426     # - Replace the AC_CHECK_LIB test with a custom test.
427 ph10 286
428     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
429 ph10 478 # Original test
430     # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
431     #
432     # Custom test follows
433 ph10 286
434 ph10 478 AC_MSG_CHECKING([for libbz2])
435     OLD_LIBS="$LIBS"
436     LIBS="$LIBS -lbz2"
437     AC_LINK_IFELSE( AC_LANG_PROGRAM([[
438     #ifdef HAVE_BZLIB_H
439     #include <bzlib.h>
440     #endif]],
441     [[return (int)BZ2_bzopen("conftest", "rb");]]),
442     [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
443     AC_MSG_RESULT([no]))
444     LIBS="$OLD_LIBS"
445    
446 ph10 287 # Check for the availabiity of libreadline
447    
448     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
449     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
450     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
451    
452 ph10 97 # This facilitates -ansi builds under Linux
453     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
454 nigel 87
455 ph10 430 PCRE_STATIC_CFLAG=""
456 ph10 97 if test "x$enable_shared" = "xno" ; then
457     AC_DEFINE([PCRE_STATIC], [1], [
458     Define if linking statically (TODO: make nice with Libtool)])
459 ph10 430 PCRE_STATIC_CFLAG="-DPCRE_STATIC"
460 nigel 87 fi
461 ph10 430 AC_SUBST(PCRE_STATIC_CFLAG)
462 nigel 87
463 ph10 97 # Here is where pcre specific defines are handled
464 nigel 87
465 ph10 97 if test "$enable_utf8" = "yes"; then
466     AC_DEFINE([SUPPORT_UTF8], [], [
467 ph10 391 Define to enable support for the UTF-8 Unicode encoding. This will
468     work even in an EBCDIC environment, but it is incompatible with
469     the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
470     *or* ASCII/UTF-8, but not both at once.])
471 nigel 87 fi
472    
473 ph10 97 if test "$enable_unicode_properties" = "yes"; then
474     AC_DEFINE([SUPPORT_UCP], [], [
475     Define to enable support for Unicode properties])
476     fi
477 nigel 87
478 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
479     AC_DEFINE([NO_RECURSE], [], [
480     PCRE uses recursive function calls to handle backtracking while
481 ph10 127 matching. This can sometimes be a problem on systems that have
482 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
483 ph10 97 doesn't use recursion in the match() function; instead it creates
484     its own stack by steam using pcre_recurse_malloc() to obtain memory
485     from the heap. For more detail, see the comments and other stuff
486     just above the match() function. On systems that support it,
487     "configure" can be used to set this in the Makefile
488     (use --disable-stack-for-recursion).])
489 nigel 87 fi
490    
491 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
492     AC_DEFINE([SUPPORT_LIBZ], [], [
493     Define to allow pcregrep to be linked with libz, so that it is
494     able to handle .gz files.])
495     fi
496    
497     if test "$enable_pcregrep_libbz2" = "yes"; then
498     AC_DEFINE([SUPPORT_LIBBZ2], [], [
499     Define to allow pcregrep to be linked with libbz2, so that it is
500     able to handle .bz2 files.])
501     fi
502    
503 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
504     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
505     Define to allow pcretest to be linked with libreadline.])
506 ph10 289 fi
507 ph10 287
508 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
509 ph10 111 The value of NEWLINE determines the newline character sequence. On
510 ph10 231 systems that support it, "configure" can be used to override the
511     default, which is 10. The possible values are 10 (LF), 13 (CR),
512     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
513 nigel 87
514 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
515     AC_DEFINE([BSR_ANYCRLF], [], [
516     By default, the \R escape sequence matches any Unicode line ending
517     character or sequence of characters. If BSR_ANYCRLF is defined, this is
518     changed so that backslash-R matches only CR, LF, or CRLF. The build-
519     time default can be overridden by the user of PCRE at runtime. On
520     systems that support it, "configure" can be used to override the
521     default.])
522     fi
523    
524 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
525     The value of LINK_SIZE determines the number of bytes used to store
526     links as offsets within the compiled regex. The default is 2, which
527     allows for compiled patterns up to 64K long. This covers the vast
528     majority of cases. However, PCRE can also be compiled to use 3 or 4
529     bytes instead. This allows for longer patterns in extreme cases. On
530     systems that support it, "configure" can be used to override this default.])
531 nigel 87
532 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
533     When calling PCRE via the POSIX interface, additional working storage
534     is required for holding the pointers to capturing substrings because
535     PCRE requires three integers per substring, whereas the POSIX
536     interface provides only two. If the number of expected substrings is
537     small, the wrapper function uses space on the stack, because this is
538     faster than using malloc() for each call. The threshold above which
539     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
540     systems that support it, "configure" can be used to override this
541     default.])
542 nigel 91
543 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
544     The value of MATCH_LIMIT determines the default number of times the
545     internal match() function can be called during a single execution of
546 ph10 100 pcre_exec(). There is a runtime interface for setting a different
547 ph10 97 limit. The limit exists in order to catch runaway regular
548     expressions that take for ever to determine that they do not match.
549     The default is set very large so that it does not accidentally catch
550     legitimate cases. On systems that support it, "configure" can be
551     used to override this default default.])
552 nigel 91
553 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
554     The above limit applies to all calls of match(), whether or not they
555     increase the recursion depth. In some environments it is desirable
556     to limit the depth of recursive calls of match() more strictly, in
557     order to restrict the maximum amount of stack (or heap, if
558     NO_RECURSE is defined) that is used. The value of
559     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
560     have any useful effect, it must be less than the value of
561 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
562     There is a runtime method for setting a different limit. On systems
563 ph10 100 that support it, "configure" can be used to override the default.])
564 nigel 93
565 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
566     This limit is parameterized just in case anybody ever wants to
567     change it. Care must be taken if it is increased, because it guards
568     against integer overflow caused by enormously large patterns.])
569 nigel 93
570 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
571     This limit is parameterized just in case anybody ever wants to
572     change it. Care must be taken if it is increased, because it guards
573     against integer overflow caused by enormously large patterns.])
574 nigel 87
575 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
576 ph10 97 /* If you are compiling for a system other than a Unix-like system or
577     Win32, and it needs some magic to be inserted before the definition
578     of a function that is exported by the library, define this macro to
579     contain the relevant magic. If you do not define this macro, it
580     defaults to "extern" for a C compiler and "extern C" for a C++
581     compiler on non-Win32 systems. This macro apears at the start of
582     every exported function that is part of the external API. It does
583     not appear on functions that are "external" in the C sense, but
584     which are internal to the library. */
585 ph10 145 #undef PCRE_EXP_DEFN])
586 nigel 87
587 ph10 97 if test "$enable_ebcdic" = "yes"; then
588     AC_DEFINE_UNQUOTED([EBCDIC], [], [
589     If you are compiling for a system that uses EBCDIC instead of ASCII
590     character codes, define this macro as 1. On systems that can use
591 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
592 ph10 392 assume that all input strings are in EBCDIC. If you do not define
593     this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
594 ph10 391 It is not possible to build a version of PCRE that supports both
595     EBCDIC and UTF-8.])
596 nigel 87 fi
597    
598 ph10 97 # Platform specific issues
599     NO_UNDEFINED=
600     EXPORT_ALL_SYMBOLS=
601     case $host_os in
602     cygwin* | mingw* )
603     if test X"$enable_shared" = Xyes; then
604     NO_UNDEFINED="-no-undefined"
605     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
606     fi
607     ;;
608     esac
609 nigel 87
610 ph10 97 # The extra LDFLAGS for each particular library
611     # (Note: The libpcre*_version bits are m4 variables, assigned above)
612 nigel 87
613 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
614     $NO_UNDEFINED -version-info libpcre_version"
615 nigel 87
616 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
617     $NO_UNDEFINED -version-info libpcreposix_version"
618 nigel 87
619 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
620     $NO_UNDEFINED -version-info libpcrecpp_version \
621     $EXPORT_ALL_SYMBOLS"
622 nigel 87
623 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
624     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
625     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
626 nigel 87
627 ph10 97 # When we run 'make distcheck', use these arguments.
628     DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
629     AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
630 nigel 87
631 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
632 ph10 376 # specified, the relevant library is available.
633 ph10 286
634     if test "$enable_pcregrep_libz" = "yes"; then
635     if test "$HAVE_ZLIB_H" != "1"; then
636     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
637     exit 1
638     fi
639     if test "$HAVE_LIBZ" != "1"; then
640     echo "** Cannot --enable-pcregrep-libz because libz was not found"
641     exit 1
642     fi
643 ph10 376 LIBZ="-lz"
644 ph10 286 fi
645 ph10 376 AC_SUBST(LIBZ)
646 ph10 286
647     if test "$enable_pcregrep_libbz2" = "yes"; then
648     if test "$HAVE_BZLIB_H" != "1"; then
649     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
650     exit 1
651     fi
652     if test "$HAVE_LIBBZ2" != "1"; then
653     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
654     exit 1
655     fi
656 ph10 376 LIBBZ2="-lbz2"
657 ph10 286 fi
658 ph10 376 AC_SUBST(LIBBZ2)
659 ph10 286
660 ph10 287 # Similarly for --enable-pcretest-readline
661    
662     if test "$enable_pcretest_libreadline" = "yes"; then
663     if test "$HAVE_READLINE_H" != "1"; then
664     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
665     exit 1
666     fi
667     if test "$HAVE_HISTORY_H" != "1"; then
668     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
669     exit 1
670     fi
671 ph10 376 LIBREADLINE="-lreadline"
672 ph10 289 fi
673 ph10 376 AC_SUBST(LIBREADLINE)
674 ph10 287
675 ph10 97 # Produce these files, in addition to config.h.
676     AC_CONFIG_FILES(
677     Makefile
678     libpcre.pc
679 ph10 423 libpcreposix.pc
680 ph10 97 libpcrecpp.pc
681     pcre-config
682     pcre.h
683     pcre_stringpiece.h
684     pcrecpparg.h
685 nigel 87 )
686    
687 ph10 97 # Make the generated script files executable.
688 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
689 nigel 87
690 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
691     # creating it was changed by reconfiguration.
692 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
693 ph10 128
694 ph10 137 AC_OUTPUT
695 ph10 128
696 ph10 97 # Print out a nice little message after configure is run displaying your
697     # chosen options.
698 ph10 286
699 ph10 97 cat <<EOF
700 nigel 87
701 ph10 97 $PACKAGE-$VERSION configuration summary:
702 nigel 87
703 ph10 287 Install prefix .................. : ${prefix}
704     C preprocessor .................. : ${CPP}
705     C compiler ...................... : ${CC}
706     C++ preprocessor ................ : ${CXXCPP}
707     C++ compiler .................... : ${CXX}
708     Linker .......................... : ${LD}
709     C preprocessor flags ............ : ${CPPFLAGS}
710     C compiler flags ................ : ${CFLAGS}
711     C++ compiler flags .............. : ${CXXFLAGS}
712     Linker flags .................... : ${LDFLAGS}
713     Extra libraries ................. : ${LIBS}
714 ph10 289
715 ph10 287 Build C++ library ............... : ${enable_cpp}
716     Enable UTF-8 support ............ : ${enable_utf8}
717     Unicode properties .............. : ${enable_unicode_properties}
718     Newline char/sequence ........... : ${enable_newline}
719     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
720     EBCDIC coding ................... : ${enable_ebcdic}
721     Rebuild char tables ............. : ${enable_rebuild_chartables}
722     Use stack recursion ............. : ${enable_stack_for_recursion}
723     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
724     Internal link size .............. : ${with_link_size}
725     Match limit ..................... : ${with_match_limit}
726     Match limit recursion ........... : ${with_match_limit_recursion}
727     Build shared libs ............... : ${enable_shared}
728     Build static libs ............... : ${enable_static}
729     Link pcregrep with libz ......... : ${enable_pcregrep_libz}
730     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
731 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
732 nigel 87
733 ph10 97 EOF
734 nigel 87
735 ph10 97 dnl end configure.ac

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