/[pcre]/code/trunk/configure.ac
ViewVC logotype

Contents of /code/trunk/configure.ac

Parent Directory Parent Directory | Revision Log Revision Log


Revision 481 - (hide annotations) (download)
Sun Jan 3 17:45:53 2010 UTC (4 years, 3 months ago) by ph10
File size: 26629 byte(s)
Forbid 08 and 09 as minor version numbers.

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 471 m4_define(pcre_minor, [01])
13 ph10 479 m4_define(pcre_prerelease, [-RC1])
14 ph10 475 m4_define(pcre_date, [2010-01-02])
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     echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
92     echo "***"
93     exit 1
94     fi
95    
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 97 # Handle --disable-cpp
108     AC_ARG_ENABLE(cpp,
109     AS_HELP_STRING([--disable-cpp],
110     [disable C++ support]),
111     , enable_cpp=yes)
112 nigel 87
113 ph10 128 # Handle --enable-rebuild-chartables
114     AC_ARG_ENABLE(rebuild-chartables,
115     AS_HELP_STRING([--enable-rebuild-chartables],
116     [rebuild character tables in current locale]),
117     , enable_rebuild_chartables=no)
118    
119 ph10 97 # Handle --enable-utf8 (disabled by default)
120     AC_ARG_ENABLE(utf8,
121     AS_HELP_STRING([--enable-utf8],
122 ph10 391 [enable UTF-8 support (incompatible with --enable-ebcdic)]),
123 ph10 97 , enable_utf8=unset)
124 nigel 87
125 ph10 97 # Handle --enable-unicode-properties
126     AC_ARG_ENABLE(unicode-properties,
127     AS_HELP_STRING([--enable-unicode-properties],
128     [enable Unicode properties support (implies --enable-utf8)]),
129     , enable_unicode_properties=no)
130 nigel 87
131 ph10 97 # Handle --enable-newline=NL
132     dnl AC_ARG_ENABLE(newline,
133     dnl AS_HELP_STRING([--enable-newline=NL],
134 ph10 149 dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
135 ph10 97 dnl , enable_newline=lf)
136 nigel 87
137 ph10 97 # Separate newline options
138     ac_pcre_newline=lf
139     AC_ARG_ENABLE(newline-is-cr,
140     AS_HELP_STRING([--enable-newline-is-cr],
141     [use CR as newline character]),
142     ac_pcre_newline=cr)
143     AC_ARG_ENABLE(newline-is-lf,
144     AS_HELP_STRING([--enable-newline-is-lf],
145     [use LF as newline character (default)]),
146     ac_pcre_newline=lf)
147     AC_ARG_ENABLE(newline-is-crlf,
148     AS_HELP_STRING([--enable-newline-is-crlf],
149     [use CRLF as newline sequence]),
150     ac_pcre_newline=crlf)
151 ph10 149 AC_ARG_ENABLE(newline-is-anycrlf,
152     AS_HELP_STRING([--enable-newline-is-anycrlf],
153     [use CR, LF, or CRLF as newline sequence]),
154     ac_pcre_newline=anycrlf)
155 ph10 97 AC_ARG_ENABLE(newline-is-any,
156     AS_HELP_STRING([--enable-newline-is-any],
157     [use any valid Unicode newline sequence]),
158     ac_pcre_newline=any)
159     enable_newline="$ac_pcre_newline"
160 nigel 87
161 ph10 231 # Handle --enable-bsr-anycrlf
162     AC_ARG_ENABLE(bsr-anycrlf,
163     AS_HELP_STRING([--enable-bsr-anycrlf],
164     [\R matches only CR, LF, CRLF by default]),
165     , enable_bsr_anycrlf=no)
166    
167 ph10 97 # Handle --enable-ebcdic
168     AC_ARG_ENABLE(ebcdic,
169     AS_HELP_STRING([--enable-ebcdic],
170 ph10 391 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf8; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
171 ph10 97 , enable_ebcdic=no)
172 nigel 87
173 ph10 97 # Handle --disable-stack-for-recursion
174     AC_ARG_ENABLE(stack-for-recursion,
175     AS_HELP_STRING([--disable-stack-for-recursion],
176     [don't use stack recursion when matching]),
177     , enable_stack_for_recursion=yes)
178 nigel 87
179 ph10 286 # Handle --enable-pcregrep-libz
180     AC_ARG_ENABLE(pcregrep-libz,
181     AS_HELP_STRING([--enable-pcregrep-libz],
182     [link pcregrep with libz to handle .gz files]),
183     , enable_pcregrep_libz=no)
184    
185     # Handle --enable-pcregrep-libbz2
186     AC_ARG_ENABLE(pcregrep-libbz2,
187     AS_HELP_STRING([--enable-pcregrep-libbz2],
188     [link pcregrep with libbz2 to handle .bz2 files]),
189     , enable_pcregrep_libbz2=no)
190    
191 ph10 287 # Handle --enable-pcretest-libreadline
192     AC_ARG_ENABLE(pcretest-libreadline,
193     AS_HELP_STRING([--enable-pcretest-libreadline],
194     [link pcretest with libreadline]),
195     , enable_pcretest_libreadline=no)
196    
197 ph10 97 # Handle --with-posix-malloc-threshold=NBYTES
198     AC_ARG_WITH(posix-malloc-threshold,
199     AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
200     [threshold for POSIX malloc usage (default=10)]),
201     , with_posix_malloc_threshold=10)
202 nigel 87
203 ph10 97 # Handle --with-link-size=N
204     AC_ARG_WITH(link-size,
205     AS_HELP_STRING([--with-link-size=N],
206     [internal link size (2, 3, or 4 allowed; default=2)]),
207     , with_link_size=2)
208 nigel 87
209 ph10 97 # Handle --with-match-limit=N
210     AC_ARG_WITH(match-limit,
211     AS_HELP_STRING([--with-match-limit=N],
212     [default limit on internal looping (default=10000000)]),
213     , with_match_limit=10000000)
214 nigel 87
215 ph10 97 # Handle --with-match-limit_recursion=N
216     #
217     # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
218     # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
219     # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
220     # different numeric value (or even the same numeric value as MATCH_LIMIT,
221     # though no longer defined in terms of the latter).
222     #
223     AC_ARG_WITH(match-limit-recursion,
224     AS_HELP_STRING([--with-match-limit-recursion=N],
225     [default limit on internal recursion (default=MATCH_LIMIT)]),
226     , with_match_limit_recursion=MATCH_LIMIT)
227 nigel 87
228 ph10 97 # Make sure that if enable_unicode_properties was set, that UTF-8 support
229     # is enabled.
230     #
231     if test "x$enable_unicode_properties" = "xyes"
232     then
233     if test "x$enable_utf8" = "xno"
234     then
235     AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
236     fi
237     enable_utf8=yes
238     fi
239 nigel 87
240 ph10 97 if test "x$enable_utf8" = "xunset"
241     then
242     enable_utf8=no
243     fi
244 nigel 87
245 ph10 128 # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
246 ph10 391 # Also check that UTF-8 support is not requested, because PCRE cannot handle
247     # EBCDIC and UTF-8 in the same build. To do so it would need to use different
248     # character constants depending on the mode.
249 ph10 128 #
250 ph10 137 if test "x$enable_ebcdic" = "xyes"
251 ph10 128 then
252     enable_rebuild_chartables=yes
253 ph10 391 if test "x$enable_utf8" = "xyes"
254     then
255     AC_MSG_ERROR([support for EBCDIC and UTF-8 cannot be enabled at the same time])
256     fi
257 ph10 128 fi
258    
259 ph10 97 # Convert the newline identifier into the appropriate integer value.
260     case "$enable_newline" in
261 ph10 149 lf) ac_pcre_newline_value=10 ;;
262     cr) ac_pcre_newline_value=13 ;;
263     crlf) ac_pcre_newline_value=3338 ;;
264 ph10 150 anycrlf) ac_pcre_newline_value=-2 ;;
265 ph10 149 any) ac_pcre_newline_value=-1 ;;
266 ph10 97 *)
267     AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
268     ;;
269     esac
270 nigel 87
271 ph10 97 # Check argument to --with-link-size
272     case "$with_link_size" in
273     2|3|4) ;;
274     *)
275     AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
276     ;;
277     esac
278 nigel 87
279 ph10 97 AH_TOP([
280 ph10 100 /* On Unix-like systems config.h.in is converted by "configure" into config.h.
281     Some other environments also support the use of "configure". PCRE is written in
282     Standard C, but there are a few non-standard things it can cope with, allowing
283     it to run on SunOS4 and other "close to standard" systems.
284 nigel 87
285 ph10 111 If you are going to build PCRE "by hand" on a system without "configure" you
286     should copy the distributed config.h.generic to config.h, and then set up the
287 ph10 237 macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
288     all of your compile commands, so that config.h is included at the start of
289     every source.
290 nigel 87
291 ph10 237 Alternatively, you can avoid editing by using -D on the compiler command line
292     to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
293    
294 ph10 111 PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
295     HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
296     them both to 0; an emulation function will be used. */])
297 ph10 100
298 ph10 97 # Checks for header files.
299 nigel 87 AC_HEADER_STDC
300 ph10 97 AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
301 nigel 87
302 ph10 97 # The files below are C++ header files.
303     pcre_have_type_traits="0"
304     pcre_have_bits_type_traits="0"
305     if test "x$enable_cpp" = "xyes" -a -n "$CXX"
306 nigel 87 then
307 ph10 97 AC_LANG_PUSH(C++)
308 nigel 87
309 ph10 330 # Older versions of pcre defined pcrecpp::no_arg, but in new versions
310     # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
311     # we want to make one an alias for the other. Different systems do
312     # this in different ways. Some systems, for instance, can do it via
313     # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
314     OLD_LDFLAGS="$LDFLAGS"
315     for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
316     "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
317     AC_MSG_CHECKING([for alias support in the linker])
318     LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
319     # We try to run the linker with this new ld flag. If the link fails,
320     # we give up and remove the new flag from LDFLAGS.
321     AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
322     class RE { static int no_arg; };
323     int RE::no_arg;
324     }],
325     []),
326     [AC_MSG_RESULT([yes]);
327     EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
328     break;],
329     AC_MSG_RESULT([no]))
330     done
331     LDFLAGS="$OLD_LDFLAGS"
332    
333 ph10 97 # We could be more clever here, given we're doing AC_SUBST with this
334 ph10 127 # (eg set a var to be the name of the include file we want). But we're not
335 ph10 97 # so it's easy to change back to 'regular' autoconf vars if we needed to.
336 nigel 87 AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
337     [pcre_have_cpp_headers="0"])
338     AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
339     [pcre_have_bits_type_traits="0"])
340     AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
341     [pcre_have_type_traits="0"])
342 ph10 330
343 ph10 97 AC_LANG_POP
344     fi
345     # Using AC_SUBST eliminates the need to include config.h in a public .h file
346     AC_SUBST(pcre_have_type_traits)
347 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
348    
349 ph10 97 # Conditional compilation
350     AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
351 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
352 nigel 87
353 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
354 nigel 87
355     AC_C_CONST
356     AC_TYPE_SIZE_T
357    
358 ph10 321 pcre_have_strotolonglong=0
359     AC_CHECK_FUNCS(strtoq strtoll _strtoi64, [pcre_have_strotolonglong="1"; break])
360     # If we can't convert a string to a long long, pretend we don't even
361     # have a long long.
362     if test $pcre_have_strotolonglong = "0"; then
363     pcre_have_long_long="0"
364     pcre_have_ulong_long="0"
365     else
366     AC_CHECK_TYPES([long long],
367     [pcre_have_long_long="1"],
368     [pcre_have_long_long="0"])
369     AC_CHECK_TYPES([unsigned long long],
370     [pcre_have_ulong_long="1"],
371     [pcre_have_ulong_long="0"])
372     fi
373 nigel 87 AC_SUBST(pcre_have_long_long)
374     AC_SUBST(pcre_have_ulong_long)
375    
376 ph10 97 # Checks for library functions.
377 nigel 87
378 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
379 nigel 87
380 ph10 286 # Check for the availability of libz (aka zlib)
381    
382     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
383     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
384    
385 ph10 478 # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
386     # as for libz. However, this had the following problem, diagnosed and fixed by
387     # a user:
388     #
389     # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
390     # under Win32.
391     # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
392     # therefore missing the function definition.
393     # - The compiler thus generates a "C" signature for the test function.
394     # - The linker fails to find the "C" function.
395     # - PCRE fails to configure if asked to do so against libbz2.
396     #
397     # Solution:
398     #
399     # - Replace the AC_CHECK_LIB test with a custom test.
400 ph10 286
401     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
402 ph10 478 # Original test
403     # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
404     #
405     # Custom test follows
406 ph10 286
407 ph10 478 AC_MSG_CHECKING([for libbz2])
408     OLD_LIBS="$LIBS"
409     LIBS="$LIBS -lbz2"
410     AC_LINK_IFELSE( AC_LANG_PROGRAM([[
411     #ifdef HAVE_BZLIB_H
412     #include <bzlib.h>
413     #endif]],
414     [[return (int)BZ2_bzopen("conftest", "rb");]]),
415     [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
416     AC_MSG_RESULT([no]))
417     LIBS="$OLD_LIBS"
418    
419 ph10 287 # Check for the availabiity of libreadline
420    
421     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
422     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
423     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
424    
425 ph10 97 # This facilitates -ansi builds under Linux
426     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
427 nigel 87
428 ph10 430 PCRE_STATIC_CFLAG=""
429 ph10 97 if test "x$enable_shared" = "xno" ; then
430     AC_DEFINE([PCRE_STATIC], [1], [
431     Define if linking statically (TODO: make nice with Libtool)])
432 ph10 430 PCRE_STATIC_CFLAG="-DPCRE_STATIC"
433 nigel 87 fi
434 ph10 430 AC_SUBST(PCRE_STATIC_CFLAG)
435 nigel 87
436 ph10 97 # Here is where pcre specific defines are handled
437 nigel 87
438 ph10 97 if test "$enable_utf8" = "yes"; then
439     AC_DEFINE([SUPPORT_UTF8], [], [
440 ph10 391 Define to enable support for the UTF-8 Unicode encoding. This will
441     work even in an EBCDIC environment, but it is incompatible with
442     the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
443     *or* ASCII/UTF-8, but not both at once.])
444 nigel 87 fi
445    
446 ph10 97 if test "$enable_unicode_properties" = "yes"; then
447     AC_DEFINE([SUPPORT_UCP], [], [
448     Define to enable support for Unicode properties])
449     fi
450 nigel 87
451 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
452     AC_DEFINE([NO_RECURSE], [], [
453     PCRE uses recursive function calls to handle backtracking while
454 ph10 127 matching. This can sometimes be a problem on systems that have
455 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
456 ph10 97 doesn't use recursion in the match() function; instead it creates
457     its own stack by steam using pcre_recurse_malloc() to obtain memory
458     from the heap. For more detail, see the comments and other stuff
459     just above the match() function. On systems that support it,
460     "configure" can be used to set this in the Makefile
461     (use --disable-stack-for-recursion).])
462 nigel 87 fi
463    
464 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
465     AC_DEFINE([SUPPORT_LIBZ], [], [
466     Define to allow pcregrep to be linked with libz, so that it is
467     able to handle .gz files.])
468     fi
469    
470     if test "$enable_pcregrep_libbz2" = "yes"; then
471     AC_DEFINE([SUPPORT_LIBBZ2], [], [
472     Define to allow pcregrep to be linked with libbz2, so that it is
473     able to handle .bz2 files.])
474     fi
475    
476 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
477     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
478     Define to allow pcretest to be linked with libreadline.])
479 ph10 289 fi
480 ph10 287
481 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
482 ph10 111 The value of NEWLINE determines the newline character sequence. On
483 ph10 231 systems that support it, "configure" can be used to override the
484     default, which is 10. The possible values are 10 (LF), 13 (CR),
485     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
486 nigel 87
487 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
488     AC_DEFINE([BSR_ANYCRLF], [], [
489     By default, the \R escape sequence matches any Unicode line ending
490     character or sequence of characters. If BSR_ANYCRLF is defined, this is
491     changed so that backslash-R matches only CR, LF, or CRLF. The build-
492     time default can be overridden by the user of PCRE at runtime. On
493     systems that support it, "configure" can be used to override the
494     default.])
495     fi
496    
497 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
498     The value of LINK_SIZE determines the number of bytes used to store
499     links as offsets within the compiled regex. The default is 2, which
500     allows for compiled patterns up to 64K long. This covers the vast
501     majority of cases. However, PCRE can also be compiled to use 3 or 4
502     bytes instead. This allows for longer patterns in extreme cases. On
503     systems that support it, "configure" can be used to override this default.])
504 nigel 87
505 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
506     When calling PCRE via the POSIX interface, additional working storage
507     is required for holding the pointers to capturing substrings because
508     PCRE requires three integers per substring, whereas the POSIX
509     interface provides only two. If the number of expected substrings is
510     small, the wrapper function uses space on the stack, because this is
511     faster than using malloc() for each call. The threshold above which
512     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
513     systems that support it, "configure" can be used to override this
514     default.])
515 nigel 91
516 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
517     The value of MATCH_LIMIT determines the default number of times the
518     internal match() function can be called during a single execution of
519 ph10 100 pcre_exec(). There is a runtime interface for setting a different
520 ph10 97 limit. The limit exists in order to catch runaway regular
521     expressions that take for ever to determine that they do not match.
522     The default is set very large so that it does not accidentally catch
523     legitimate cases. On systems that support it, "configure" can be
524     used to override this default default.])
525 nigel 91
526 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
527     The above limit applies to all calls of match(), whether or not they
528     increase the recursion depth. In some environments it is desirable
529     to limit the depth of recursive calls of match() more strictly, in
530     order to restrict the maximum amount of stack (or heap, if
531     NO_RECURSE is defined) that is used. The value of
532     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
533     have any useful effect, it must be less than the value of
534 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
535     There is a runtime method for setting a different limit. On systems
536 ph10 100 that support it, "configure" can be used to override the default.])
537 nigel 93
538 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
539     This limit is parameterized just in case anybody ever wants to
540     change it. Care must be taken if it is increased, because it guards
541     against integer overflow caused by enormously large patterns.])
542 nigel 93
543 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
544     This limit is parameterized just in case anybody ever wants to
545     change it. Care must be taken if it is increased, because it guards
546     against integer overflow caused by enormously large patterns.])
547 nigel 87
548 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
549 ph10 97 /* If you are compiling for a system other than a Unix-like system or
550     Win32, and it needs some magic to be inserted before the definition
551     of a function that is exported by the library, define this macro to
552     contain the relevant magic. If you do not define this macro, it
553     defaults to "extern" for a C compiler and "extern C" for a C++
554     compiler on non-Win32 systems. This macro apears at the start of
555     every exported function that is part of the external API. It does
556     not appear on functions that are "external" in the C sense, but
557     which are internal to the library. */
558 ph10 145 #undef PCRE_EXP_DEFN])
559 nigel 87
560 ph10 97 if test "$enable_ebcdic" = "yes"; then
561     AC_DEFINE_UNQUOTED([EBCDIC], [], [
562     If you are compiling for a system that uses EBCDIC instead of ASCII
563     character codes, define this macro as 1. On systems that can use
564 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
565 ph10 392 assume that all input strings are in EBCDIC. If you do not define
566     this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
567 ph10 391 It is not possible to build a version of PCRE that supports both
568     EBCDIC and UTF-8.])
569 nigel 87 fi
570    
571 ph10 97 # Platform specific issues
572     NO_UNDEFINED=
573     EXPORT_ALL_SYMBOLS=
574     case $host_os in
575     cygwin* | mingw* )
576     if test X"$enable_shared" = Xyes; then
577     NO_UNDEFINED="-no-undefined"
578     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
579     fi
580     ;;
581     esac
582 nigel 87
583 ph10 97 # The extra LDFLAGS for each particular library
584     # (Note: The libpcre*_version bits are m4 variables, assigned above)
585 nigel 87
586 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
587     $NO_UNDEFINED -version-info libpcre_version"
588 nigel 87
589 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
590     $NO_UNDEFINED -version-info libpcreposix_version"
591 nigel 87
592 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
593     $NO_UNDEFINED -version-info libpcrecpp_version \
594     $EXPORT_ALL_SYMBOLS"
595 nigel 87
596 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
597     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
598     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
599 nigel 87
600 ph10 97 # When we run 'make distcheck', use these arguments.
601     DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
602     AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
603 nigel 87
604 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
605 ph10 376 # specified, the relevant library is available.
606 ph10 286
607     if test "$enable_pcregrep_libz" = "yes"; then
608     if test "$HAVE_ZLIB_H" != "1"; then
609     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
610     exit 1
611     fi
612     if test "$HAVE_LIBZ" != "1"; then
613     echo "** Cannot --enable-pcregrep-libz because libz was not found"
614     exit 1
615     fi
616 ph10 376 LIBZ="-lz"
617 ph10 286 fi
618 ph10 376 AC_SUBST(LIBZ)
619 ph10 286
620     if test "$enable_pcregrep_libbz2" = "yes"; then
621     if test "$HAVE_BZLIB_H" != "1"; then
622     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
623     exit 1
624     fi
625     if test "$HAVE_LIBBZ2" != "1"; then
626     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
627     exit 1
628     fi
629 ph10 376 LIBBZ2="-lbz2"
630 ph10 286 fi
631 ph10 376 AC_SUBST(LIBBZ2)
632 ph10 286
633 ph10 287 # Similarly for --enable-pcretest-readline
634    
635     if test "$enable_pcretest_libreadline" = "yes"; then
636     if test "$HAVE_READLINE_H" != "1"; then
637     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
638     exit 1
639     fi
640     if test "$HAVE_HISTORY_H" != "1"; then
641     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
642     exit 1
643     fi
644 ph10 376 LIBREADLINE="-lreadline"
645 ph10 289 fi
646 ph10 376 AC_SUBST(LIBREADLINE)
647 ph10 287
648 ph10 97 # Produce these files, in addition to config.h.
649     AC_CONFIG_FILES(
650     Makefile
651     libpcre.pc
652 ph10 423 libpcreposix.pc
653 ph10 97 libpcrecpp.pc
654     pcre-config
655     pcre.h
656     pcre_stringpiece.h
657     pcrecpparg.h
658 nigel 87 )
659    
660 ph10 97 # Make the generated script files executable.
661 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
662 nigel 87
663 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
664     # creating it was changed by reconfiguration.
665 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
666 ph10 128
667 ph10 137 AC_OUTPUT
668 ph10 128
669 ph10 97 # Print out a nice little message after configure is run displaying your
670     # chosen options.
671 ph10 286
672 ph10 97 cat <<EOF
673 nigel 87
674 ph10 97 $PACKAGE-$VERSION configuration summary:
675 nigel 87
676 ph10 287 Install prefix .................. : ${prefix}
677     C preprocessor .................. : ${CPP}
678     C compiler ...................... : ${CC}
679     C++ preprocessor ................ : ${CXXCPP}
680     C++ compiler .................... : ${CXX}
681     Linker .......................... : ${LD}
682     C preprocessor flags ............ : ${CPPFLAGS}
683     C compiler flags ................ : ${CFLAGS}
684     C++ compiler flags .............. : ${CXXFLAGS}
685     Linker flags .................... : ${LDFLAGS}
686     Extra libraries ................. : ${LIBS}
687 ph10 289
688 ph10 287 Build C++ library ............... : ${enable_cpp}
689     Enable UTF-8 support ............ : ${enable_utf8}
690     Unicode properties .............. : ${enable_unicode_properties}
691     Newline char/sequence ........... : ${enable_newline}
692     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
693     EBCDIC coding ................... : ${enable_ebcdic}
694     Rebuild char tables ............. : ${enable_rebuild_chartables}
695     Use stack recursion ............. : ${enable_stack_for_recursion}
696     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
697     Internal link size .............. : ${with_link_size}
698     Match limit ..................... : ${with_match_limit}
699     Match limit recursion ........... : ${with_match_limit_recursion}
700     Build shared libs ............... : ${enable_shared}
701     Build static libs ............... : ${enable_static}
702     Link pcregrep with libz ......... : ${enable_pcregrep_libz}
703     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
704 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
705 nigel 87
706 ph10 97 EOF
707 nigel 87
708 ph10 97 dnl end configure.ac

Properties

Name Value
svn:eol-style native
svn:keywords "Author Date Id Revision Url"

webmaster@exim.org
ViewVC Help
Powered by ViewVC 1.1.12