/[pcre]/code/branches/pcre16/configure.ac
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Contents of /code/branches/pcre16/configure.ac

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Revision 486 - (hide annotations) (download)
Tue Jan 5 17:44:57 2010 UTC (4 years, 11 months ago) by ph10
Original Path: code/trunk/configure.ac
File size: 27786 byte(s)
Fix HP compile problem for pcrecpp.cc.

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 486 m4_define(pcre_date, [2010-01-06])
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 486 # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
344     # in a c++ context. This matters becuase strtoimax is C99 and may not
345     # be supported by the C++ compiler.)
346     # Figure out how to create a longlong from a string: strtoll and
347     # equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a
348     # strtoll, for instance, but it only takes 2 args instead of 3!
349     # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
350     AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
351     AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
352     AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
353     AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
354     have_strto_fn=0
355     for fn in srtoq strtoll _strtoi64 strtoimax; do
356     AC_MSG_CHECKING([for $fn])
357     if test "$fn" = strtoimax; then
358     include=stdint.h
359     else
360     include=stdlib.h
361     fi
362     AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include <$include>],
363     [char* e; return $fn("100", &e, 10)]),
364     [AC_MSG_RESULT(yes)
365     AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
366     [Define to 1 if you have `$fn'.])
367     have_strto_fn=1
368     break],
369     [AC_MSG_RESULT(no)])
370     done
371    
372     if test "$have_strto_fn" = 1; then
373     AC_CHECK_TYPES([long long],
374     [pcre_have_long_long="1"],
375     [pcre_have_long_long="0"])
376     AC_CHECK_TYPES([unsigned long long],
377     [pcre_have_ulong_long="1"],
378     [pcre_have_ulong_long="0"])
379     else
380     pcre_have_long_long="0"
381     pcre_have_ulong_long="0"
382     fi
383     AC_SUBST(pcre_have_long_long)
384     AC_SUBST(pcre_have_ulong_long)
385    
386 ph10 97 AC_LANG_POP
387     fi
388     # Using AC_SUBST eliminates the need to include config.h in a public .h file
389     AC_SUBST(pcre_have_type_traits)
390 nigel 87 AC_SUBST(pcre_have_bits_type_traits)
391    
392 ph10 97 # Conditional compilation
393     AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
394 ph10 128 AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
395 nigel 87
396 ph10 97 # Checks for typedefs, structures, and compiler characteristics.
397 nigel 87
398     AC_C_CONST
399     AC_TYPE_SIZE_T
400    
401 ph10 97 # Checks for library functions.
402 nigel 87
403 ph10 321 AC_CHECK_FUNCS(bcopy memmove strerror)
404 nigel 87
405 ph10 286 # Check for the availability of libz (aka zlib)
406    
407     AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
408     AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
409    
410 ph10 478 # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
411     # as for libz. However, this had the following problem, diagnosed and fixed by
412     # a user:
413     #
414     # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
415     # under Win32.
416     # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
417     # therefore missing the function definition.
418     # - The compiler thus generates a "C" signature for the test function.
419     # - The linker fails to find the "C" function.
420     # - PCRE fails to configure if asked to do so against libbz2.
421     #
422     # Solution:
423     #
424     # - Replace the AC_CHECK_LIB test with a custom test.
425 ph10 286
426     AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
427 ph10 478 # Original test
428     # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
429     #
430     # Custom test follows
431 ph10 286
432 ph10 478 AC_MSG_CHECKING([for libbz2])
433     OLD_LIBS="$LIBS"
434     LIBS="$LIBS -lbz2"
435     AC_LINK_IFELSE( AC_LANG_PROGRAM([[
436     #ifdef HAVE_BZLIB_H
437     #include <bzlib.h>
438     #endif]],
439     [[return (int)BZ2_bzopen("conftest", "rb");]]),
440     [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
441     AC_MSG_RESULT([no]))
442     LIBS="$OLD_LIBS"
443    
444 ph10 287 # Check for the availabiity of libreadline
445    
446     AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
447     AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
448     AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
449    
450 ph10 97 # This facilitates -ansi builds under Linux
451     dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
452 nigel 87
453 ph10 430 PCRE_STATIC_CFLAG=""
454 ph10 97 if test "x$enable_shared" = "xno" ; then
455     AC_DEFINE([PCRE_STATIC], [1], [
456     Define if linking statically (TODO: make nice with Libtool)])
457 ph10 430 PCRE_STATIC_CFLAG="-DPCRE_STATIC"
458 nigel 87 fi
459 ph10 430 AC_SUBST(PCRE_STATIC_CFLAG)
460 nigel 87
461 ph10 97 # Here is where pcre specific defines are handled
462 nigel 87
463 ph10 97 if test "$enable_utf8" = "yes"; then
464     AC_DEFINE([SUPPORT_UTF8], [], [
465 ph10 391 Define to enable support for the UTF-8 Unicode encoding. This will
466     work even in an EBCDIC environment, but it is incompatible with
467     the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
468     *or* ASCII/UTF-8, but not both at once.])
469 nigel 87 fi
470    
471 ph10 97 if test "$enable_unicode_properties" = "yes"; then
472     AC_DEFINE([SUPPORT_UCP], [], [
473     Define to enable support for Unicode properties])
474     fi
475 nigel 87
476 ph10 97 if test "$enable_stack_for_recursion" = "no"; then
477     AC_DEFINE([NO_RECURSE], [], [
478     PCRE uses recursive function calls to handle backtracking while
479 ph10 127 matching. This can sometimes be a problem on systems that have
480 ph10 100 stacks of limited size. Define NO_RECURSE to get a version that
481 ph10 97 doesn't use recursion in the match() function; instead it creates
482     its own stack by steam using pcre_recurse_malloc() to obtain memory
483     from the heap. For more detail, see the comments and other stuff
484     just above the match() function. On systems that support it,
485     "configure" can be used to set this in the Makefile
486     (use --disable-stack-for-recursion).])
487 nigel 87 fi
488    
489 ph10 286 if test "$enable_pcregrep_libz" = "yes"; then
490     AC_DEFINE([SUPPORT_LIBZ], [], [
491     Define to allow pcregrep to be linked with libz, so that it is
492     able to handle .gz files.])
493     fi
494    
495     if test "$enable_pcregrep_libbz2" = "yes"; then
496     AC_DEFINE([SUPPORT_LIBBZ2], [], [
497     Define to allow pcregrep to be linked with libbz2, so that it is
498     able to handle .bz2 files.])
499     fi
500    
501 ph10 287 if test "$enable_pcretest_libreadline" = "yes"; then
502     AC_DEFINE([SUPPORT_LIBREADLINE], [], [
503     Define to allow pcretest to be linked with libreadline.])
504 ph10 289 fi
505 ph10 287
506 ph10 97 AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
507 ph10 111 The value of NEWLINE determines the newline character sequence. On
508 ph10 231 systems that support it, "configure" can be used to override the
509     default, which is 10. The possible values are 10 (LF), 13 (CR),
510     3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
511 nigel 87
512 ph10 231 if test "$enable_bsr_anycrlf" = "yes"; then
513     AC_DEFINE([BSR_ANYCRLF], [], [
514     By default, the \R escape sequence matches any Unicode line ending
515     character or sequence of characters. If BSR_ANYCRLF is defined, this is
516     changed so that backslash-R matches only CR, LF, or CRLF. The build-
517     time default can be overridden by the user of PCRE at runtime. On
518     systems that support it, "configure" can be used to override the
519     default.])
520     fi
521    
522 ph10 97 AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
523     The value of LINK_SIZE determines the number of bytes used to store
524     links as offsets within the compiled regex. The default is 2, which
525     allows for compiled patterns up to 64K long. This covers the vast
526     majority of cases. However, PCRE can also be compiled to use 3 or 4
527     bytes instead. This allows for longer patterns in extreme cases. On
528     systems that support it, "configure" can be used to override this default.])
529 nigel 87
530 ph10 97 AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
531     When calling PCRE via the POSIX interface, additional working storage
532     is required for holding the pointers to capturing substrings because
533     PCRE requires three integers per substring, whereas the POSIX
534     interface provides only two. If the number of expected substrings is
535     small, the wrapper function uses space on the stack, because this is
536     faster than using malloc() for each call. The threshold above which
537     the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
538     systems that support it, "configure" can be used to override this
539     default.])
540 nigel 91
541 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
542     The value of MATCH_LIMIT determines the default number of times the
543     internal match() function can be called during a single execution of
544 ph10 100 pcre_exec(). There is a runtime interface for setting a different
545 ph10 97 limit. The limit exists in order to catch runaway regular
546     expressions that take for ever to determine that they do not match.
547     The default is set very large so that it does not accidentally catch
548     legitimate cases. On systems that support it, "configure" can be
549     used to override this default default.])
550 nigel 91
551 ph10 97 AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
552     The above limit applies to all calls of match(), whether or not they
553     increase the recursion depth. In some environments it is desirable
554     to limit the depth of recursive calls of match() more strictly, in
555     order to restrict the maximum amount of stack (or heap, if
556     NO_RECURSE is defined) that is used. The value of
557     MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
558     have any useful effect, it must be less than the value of
559 ph10 111 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
560     There is a runtime method for setting a different limit. On systems
561 ph10 100 that support it, "configure" can be used to override the default.])
562 nigel 93
563 ph10 97 AC_DEFINE([MAX_NAME_SIZE], [32], [
564     This limit is parameterized just in case anybody ever wants to
565     change it. Care must be taken if it is increased, because it guards
566     against integer overflow caused by enormously large patterns.])
567 nigel 93
568 ph10 97 AC_DEFINE([MAX_NAME_COUNT], [10000], [
569     This limit is parameterized just in case anybody ever wants to
570     change it. Care must be taken if it is increased, because it guards
571     against integer overflow caused by enormously large patterns.])
572 nigel 87
573 ph10 145 AH_VERBATIM([PCRE_EXP_DEFN], [
574 ph10 97 /* If you are compiling for a system other than a Unix-like system or
575     Win32, and it needs some magic to be inserted before the definition
576     of a function that is exported by the library, define this macro to
577     contain the relevant magic. If you do not define this macro, it
578     defaults to "extern" for a C compiler and "extern C" for a C++
579     compiler on non-Win32 systems. This macro apears at the start of
580     every exported function that is part of the external API. It does
581     not appear on functions that are "external" in the C sense, but
582     which are internal to the library. */
583 ph10 145 #undef PCRE_EXP_DEFN])
584 nigel 87
585 ph10 97 if test "$enable_ebcdic" = "yes"; then
586     AC_DEFINE_UNQUOTED([EBCDIC], [], [
587     If you are compiling for a system that uses EBCDIC instead of ASCII
588     character codes, define this macro as 1. On systems that can use
589 ph10 391 "configure", this can be done via --enable-ebcdic. PCRE will then
590 ph10 392 assume that all input strings are in EBCDIC. If you do not define
591     this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
592 ph10 391 It is not possible to build a version of PCRE that supports both
593     EBCDIC and UTF-8.])
594 nigel 87 fi
595    
596 ph10 97 # Platform specific issues
597     NO_UNDEFINED=
598     EXPORT_ALL_SYMBOLS=
599     case $host_os in
600     cygwin* | mingw* )
601     if test X"$enable_shared" = Xyes; then
602     NO_UNDEFINED="-no-undefined"
603     EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
604     fi
605     ;;
606     esac
607 nigel 87
608 ph10 97 # The extra LDFLAGS for each particular library
609     # (Note: The libpcre*_version bits are m4 variables, assigned above)
610 nigel 87
611 ph10 330 EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
612     $NO_UNDEFINED -version-info libpcre_version"
613 nigel 87
614 ph10 330 EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
615     $NO_UNDEFINED -version-info libpcreposix_version"
616 nigel 87
617 ph10 330 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
618     $NO_UNDEFINED -version-info libpcrecpp_version \
619     $EXPORT_ALL_SYMBOLS"
620 nigel 87
621 ph10 97 AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
622     AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
623     AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
624 nigel 87
625 ph10 97 # When we run 'make distcheck', use these arguments.
626     DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
627     AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
628 nigel 87
629 ph10 286 # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
630 ph10 376 # specified, the relevant library is available.
631 ph10 286
632     if test "$enable_pcregrep_libz" = "yes"; then
633     if test "$HAVE_ZLIB_H" != "1"; then
634     echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
635     exit 1
636     fi
637     if test "$HAVE_LIBZ" != "1"; then
638     echo "** Cannot --enable-pcregrep-libz because libz was not found"
639     exit 1
640     fi
641 ph10 376 LIBZ="-lz"
642 ph10 286 fi
643 ph10 376 AC_SUBST(LIBZ)
644 ph10 286
645     if test "$enable_pcregrep_libbz2" = "yes"; then
646     if test "$HAVE_BZLIB_H" != "1"; then
647     echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
648     exit 1
649     fi
650     if test "$HAVE_LIBBZ2" != "1"; then
651     echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
652     exit 1
653     fi
654 ph10 376 LIBBZ2="-lbz2"
655 ph10 286 fi
656 ph10 376 AC_SUBST(LIBBZ2)
657 ph10 286
658 ph10 287 # Similarly for --enable-pcretest-readline
659    
660     if test "$enable_pcretest_libreadline" = "yes"; then
661     if test "$HAVE_READLINE_H" != "1"; then
662     echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
663     exit 1
664     fi
665     if test "$HAVE_HISTORY_H" != "1"; then
666     echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
667     exit 1
668     fi
669 ph10 376 LIBREADLINE="-lreadline"
670 ph10 289 fi
671 ph10 376 AC_SUBST(LIBREADLINE)
672 ph10 287
673 ph10 97 # Produce these files, in addition to config.h.
674     AC_CONFIG_FILES(
675     Makefile
676     libpcre.pc
677 ph10 423 libpcreposix.pc
678 ph10 97 libpcrecpp.pc
679     pcre-config
680     pcre.h
681     pcre_stringpiece.h
682     pcrecpparg.h
683 nigel 87 )
684    
685 ph10 97 # Make the generated script files executable.
686 ph10 137 AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
687 nigel 87
688 ph10 128 # Make sure that pcre_chartables.c is removed in case the method for
689     # creating it was changed by reconfiguration.
690 ph10 137 AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
691 ph10 128
692 ph10 137 AC_OUTPUT
693 ph10 128
694 ph10 97 # Print out a nice little message after configure is run displaying your
695     # chosen options.
696 ph10 286
697 ph10 97 cat <<EOF
698 nigel 87
699 ph10 97 $PACKAGE-$VERSION configuration summary:
700 nigel 87
701 ph10 287 Install prefix .................. : ${prefix}
702     C preprocessor .................. : ${CPP}
703     C compiler ...................... : ${CC}
704     C++ preprocessor ................ : ${CXXCPP}
705     C++ compiler .................... : ${CXX}
706     Linker .......................... : ${LD}
707     C preprocessor flags ............ : ${CPPFLAGS}
708     C compiler flags ................ : ${CFLAGS}
709     C++ compiler flags .............. : ${CXXFLAGS}
710     Linker flags .................... : ${LDFLAGS}
711     Extra libraries ................. : ${LIBS}
712 ph10 289
713 ph10 287 Build C++ library ............... : ${enable_cpp}
714     Enable UTF-8 support ............ : ${enable_utf8}
715     Unicode properties .............. : ${enable_unicode_properties}
716     Newline char/sequence ........... : ${enable_newline}
717     \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
718     EBCDIC coding ................... : ${enable_ebcdic}
719     Rebuild char tables ............. : ${enable_rebuild_chartables}
720     Use stack recursion ............. : ${enable_stack_for_recursion}
721     POSIX mem threshold ............. : ${with_posix_malloc_threshold}
722     Internal link size .............. : ${with_link_size}
723     Match limit ..................... : ${with_match_limit}
724     Match limit recursion ........... : ${with_match_limit_recursion}
725     Build shared libs ............... : ${enable_shared}
726     Build static libs ............... : ${enable_static}
727     Link pcregrep with libz ......... : ${enable_pcregrep_libz}
728     Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
729 ph10 289 Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
730 nigel 87
731 ph10 97 EOF
732 nigel 87
733 ph10 97 dnl end configure.ac

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