Annotation of embedaddon/pcre/configure.ac, revision 1.1.1.3
1.1 misho 1: dnl Process this file with autoconf to produce a configure script.
2:
3: 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:
8: 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: m4_define(pcre_major, [8])
1.1.1.3 ! misho 12: m4_define(pcre_minor, [31])
1.1 misho 13: m4_define(pcre_prerelease, [])
1.1.1.3 ! misho 14: m4_define(pcre_date, [2012-07-06])
1.1.1.2 misho 15:
16: # NOTE: The CMakeLists.txt file searches for the above variables in the first
17: # 50 lines of this file. Please update that if the variables above are moved.
1.1 misho 18:
19: # Libtool shared library interface versions (current:revision:age)
1.1.1.3 ! misho 20: m4_define(libpcre_version, [1:1:0])
! 21: m4_define(libpcre16_version, [0:1:0])
! 22: m4_define(libpcreposix_version, [0:1:0])
1.1 misho 23: m4_define(libpcrecpp_version, [0:0:0])
24:
25: AC_PREREQ(2.57)
26: AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
27: AC_CONFIG_SRCDIR([pcre.h.in])
28: AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
1.1.1.2 misho 29: m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
1.1 misho 30: AC_CONFIG_HEADERS(config.h)
31:
32: # This was added at the suggestion of libtoolize (03-Jan-10)
33: AC_CONFIG_MACRO_DIR([m4])
34:
35: # The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
36: # "-g" for any other compiler. There doesn't seem to be a standard way of
37: # getting rid of the -g (which I don't think is needed for a production
38: # library). This fudge seems to achieve the necessary. First, we remember the
39: # externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
40: # AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
41: # set, they will be set to Autoconf's defaults. Afterwards, if the original
42: # values were not set, remove the -g from the Autoconf defaults.
43: # (PH 02-May-07)
44:
45: remember_set_CFLAGS="$CFLAGS"
46: remember_set_CXXFLAGS="$CXXFLAGS"
47:
48: AC_PROG_CC
49: AC_PROG_CXX
50:
51: if test "x$remember_set_CFLAGS" = "x"
52: then
53: if test "$CFLAGS" = "-g -O2"
54: then
55: CFLAGS="-O2"
56: elif test "$CFLAGS" = "-g"
57: then
58: CFLAGS=""
59: fi
60: fi
61:
62: if test "x$remember_set_CXXFLAGS" = "x"
63: then
64: if test "$CXXFLAGS" = "-g -O2"
65: then
66: CXXFLAGS="-O2"
67: elif test "$CXXFLAGS" = "-g"
68: then
69: CXXFLAGS=""
70: fi
71: fi
72:
73: # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
74: # Check for that case, and just disable c++ code if g++ doesn't run.
75: AC_LANG_PUSH(C++)
76: AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],, CXX=""; CXXCP=""; CXXFLAGS="")
77: AC_LANG_POP
78:
79: # Check for a 64-bit integer type
80: AC_TYPE_INT64_T
81:
82: AC_PROG_INSTALL
83: AC_LIBTOOL_WIN32_DLL
84: LT_INIT
85: AC_PROG_LN_S
86:
87: PCRE_MAJOR="pcre_major"
88: PCRE_MINOR="pcre_minor"
89: PCRE_PRERELEASE="pcre_prerelease"
90: PCRE_DATE="pcre_date"
91:
92: if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09"
93: then
94: echo "***"
95: echo "*** Minor version number $PCRE_MINOR must not be used. ***"
96: echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
97: echo "***"
98: exit 1
99: fi
100:
101: AC_SUBST(PCRE_MAJOR)
102: AC_SUBST(PCRE_MINOR)
103: AC_SUBST(PCRE_PRERELEASE)
104: AC_SUBST(PCRE_DATE)
105:
106: # Set a more sensible default value for $(htmldir).
107: if test "x$htmldir" = 'x${docdir}'
108: then
109: htmldir='${docdir}/html'
110: fi
111:
1.1.1.2 misho 112: # Handle --disable-pcre8 (enabled by default)
113: AC_ARG_ENABLE(pcre8,
114: AS_HELP_STRING([--disable-pcre8],
115: [disable 8 bit character support]),
116: , enable_pcre8=unset)
117: AC_SUBST(enable_pcre8)
118:
119: # Handle --enable-pcre16 (disabled by default)
120: AC_ARG_ENABLE(pcre16,
121: AS_HELP_STRING([--enable-pcre16],
122: [enable 16 bit character support]),
123: , enable_pcre16=unset)
124: AC_SUBST(enable_pcre16)
125:
1.1 misho 126: # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
127: # pcre-config.
128: AC_ARG_ENABLE(cpp,
129: AS_HELP_STRING([--disable-cpp],
130: [disable C++ support]),
1.1.1.2 misho 131: , enable_cpp=unset)
1.1 misho 132: AC_SUBST(enable_cpp)
133:
134: # Handle --enable-jit (disabled by default)
135: AC_ARG_ENABLE(jit,
136: AS_HELP_STRING([--enable-jit],
137: [enable Just-In-Time compiling support]),
138: , enable_jit=no)
139:
140: # Handle --disable-pcregrep-jit (enabled by default)
141: AC_ARG_ENABLE(pcregrep-jit,
142: AS_HELP_STRING([--disable-pcregrep-jit],
143: [disable JIT support in pcregrep]),
144: , enable_pcregrep_jit=yes)
145:
146: # Handle --enable-rebuild-chartables
147: AC_ARG_ENABLE(rebuild-chartables,
148: AS_HELP_STRING([--enable-rebuild-chartables],
149: [rebuild character tables in current locale]),
150: , enable_rebuild_chartables=no)
151:
152: # Handle --enable-utf8 (disabled by default)
153: AC_ARG_ENABLE(utf8,
154: AS_HELP_STRING([--enable-utf8],
1.1.1.2 misho 155: [another name for --enable-utf. Kept only for compatibility reasons]),
1.1 misho 156: , enable_utf8=unset)
157:
1.1.1.2 misho 158: # Handle --enable-utf (disabled by default)
159: AC_ARG_ENABLE(utf,
160: AS_HELP_STRING([--enable-utf],
161: [enable UTF-8/16 support (incompatible with --enable-ebcdic)]),
162: , enable_utf=unset)
163:
1.1 misho 164: # Handle --enable-unicode-properties
165: AC_ARG_ENABLE(unicode-properties,
166: AS_HELP_STRING([--enable-unicode-properties],
1.1.1.2 misho 167: [enable Unicode properties support (implies --enable-utf)]),
1.1 misho 168: , enable_unicode_properties=no)
169:
170: # Handle --enable-newline=NL
171: dnl AC_ARG_ENABLE(newline,
172: dnl AS_HELP_STRING([--enable-newline=NL],
173: dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
174: dnl , enable_newline=lf)
175:
176: # Separate newline options
177: ac_pcre_newline=lf
178: AC_ARG_ENABLE(newline-is-cr,
179: AS_HELP_STRING([--enable-newline-is-cr],
180: [use CR as newline character]),
181: ac_pcre_newline=cr)
182: AC_ARG_ENABLE(newline-is-lf,
183: AS_HELP_STRING([--enable-newline-is-lf],
184: [use LF as newline character (default)]),
185: ac_pcre_newline=lf)
186: AC_ARG_ENABLE(newline-is-crlf,
187: AS_HELP_STRING([--enable-newline-is-crlf],
188: [use CRLF as newline sequence]),
189: ac_pcre_newline=crlf)
190: AC_ARG_ENABLE(newline-is-anycrlf,
191: AS_HELP_STRING([--enable-newline-is-anycrlf],
192: [use CR, LF, or CRLF as newline sequence]),
193: ac_pcre_newline=anycrlf)
194: AC_ARG_ENABLE(newline-is-any,
195: AS_HELP_STRING([--enable-newline-is-any],
196: [use any valid Unicode newline sequence]),
197: ac_pcre_newline=any)
198: enable_newline="$ac_pcre_newline"
199:
200: # Handle --enable-bsr-anycrlf
201: AC_ARG_ENABLE(bsr-anycrlf,
202: AS_HELP_STRING([--enable-bsr-anycrlf],
203: [\R matches only CR, LF, CRLF by default]),
204: , enable_bsr_anycrlf=no)
205:
206: # Handle --enable-ebcdic
207: AC_ARG_ENABLE(ebcdic,
208: AS_HELP_STRING([--enable-ebcdic],
1.1.1.2 misho 209: [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
1.1 misho 210: , enable_ebcdic=no)
211:
212: # Handle --disable-stack-for-recursion
213: AC_ARG_ENABLE(stack-for-recursion,
214: AS_HELP_STRING([--disable-stack-for-recursion],
215: [don't use stack recursion when matching]),
216: , enable_stack_for_recursion=yes)
217:
218: # Handle --enable-pcregrep-libz
219: AC_ARG_ENABLE(pcregrep-libz,
220: AS_HELP_STRING([--enable-pcregrep-libz],
221: [link pcregrep with libz to handle .gz files]),
222: , enable_pcregrep_libz=no)
223:
224: # Handle --enable-pcregrep-libbz2
225: AC_ARG_ENABLE(pcregrep-libbz2,
226: AS_HELP_STRING([--enable-pcregrep-libbz2],
227: [link pcregrep with libbz2 to handle .bz2 files]),
228: , enable_pcregrep_libbz2=no)
229:
230: # Handle --with-pcregrep-bufsize=N
231: AC_ARG_WITH(pcregrep-bufsize,
232: AS_HELP_STRING([--with-pcregrep-bufsize=N],
233: [pcregrep buffer size (default=20480)]),
234: , with_pcregrep_bufsize=20480)
235:
1.1.1.3 ! misho 236: # Handle --enable-pcretest-libedit
! 237: AC_ARG_ENABLE(pcretest-libedit,
! 238: AS_HELP_STRING([--enable-pcretest-libedit],
! 239: [link pcretest with libedit]),
! 240: , enable_pcretest_libedit=no)
! 241:
1.1 misho 242: # Handle --enable-pcretest-libreadline
243: AC_ARG_ENABLE(pcretest-libreadline,
244: AS_HELP_STRING([--enable-pcretest-libreadline],
245: [link pcretest with libreadline]),
246: , enable_pcretest_libreadline=no)
247:
248: # Handle --with-posix-malloc-threshold=NBYTES
249: AC_ARG_WITH(posix-malloc-threshold,
250: AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
251: [threshold for POSIX malloc usage (default=10)]),
252: , with_posix_malloc_threshold=10)
253:
254: # Handle --with-link-size=N
255: AC_ARG_WITH(link-size,
256: AS_HELP_STRING([--with-link-size=N],
257: [internal link size (2, 3, or 4 allowed; default=2)]),
258: , with_link_size=2)
259:
260: # Handle --with-match-limit=N
261: AC_ARG_WITH(match-limit,
262: AS_HELP_STRING([--with-match-limit=N],
263: [default limit on internal looping (default=10000000)]),
264: , with_match_limit=10000000)
265:
266: # Handle --with-match-limit_recursion=N
267: #
268: # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
269: # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
270: # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
271: # different numeric value (or even the same numeric value as MATCH_LIMIT,
272: # though no longer defined in terms of the latter).
273: #
274: AC_ARG_WITH(match-limit-recursion,
275: AS_HELP_STRING([--with-match-limit-recursion=N],
276: [default limit on internal recursion (default=MATCH_LIMIT)]),
277: , with_match_limit_recursion=MATCH_LIMIT)
278:
1.1.1.2 misho 279: # Copy enable_utf8 value to enable_utf for compatibility reasons
280: if test "x$enable_utf8" != "xunset"
281: then
282: if test "x$enable_utf" != "xunset"
283: then
284: AC_MSG_ERROR([--enable/disable-utf8 is kept only for compatibility reasons and its value is copied to --enable/disable-utf. Newer code must use --enable/disable-utf alone.])
285: fi
286: enable_utf=$enable_utf8
287: fi
288:
289: # Set the default value for pcre8
290: if test "x$enable_pcre8" = "xunset"
291: then
292: enable_pcre8=yes
293: fi
294:
295: # Set the default value for pcre16
296: if test "x$enable_pcre16" = "xunset"
297: then
298: enable_pcre16=no
299: fi
300:
301: # Make sure enable_pcre8 or enable_pcre16 was set
302: if test "x$enable_pcre8$enable_pcre16" = "xnono"
303: then
304: AC_MSG_ERROR([Either 8 or 16 bit (or both) pcre library must be enabled])
305: fi
306:
307: # Make sure that if enable_unicode_properties was set, that UTF support is enabled.
1.1 misho 308: if test "x$enable_unicode_properties" = "xyes"
309: then
1.1.1.2 misho 310: if test "x$enable_utf" = "xno"
1.1 misho 311: then
1.1.1.2 misho 312: AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support])
1.1 misho 313: fi
1.1.1.2 misho 314: enable_utf=yes
1.1 misho 315: fi
316:
1.1.1.2 misho 317: # enable_utf is disabled by default.
318: if test "x$enable_utf" = "xunset"
1.1 misho 319: then
1.1.1.2 misho 320: enable_utf=no
321: fi
322:
323: # enable_cpp copies the value of enable_pcre8 by default
324: if test "x$enable_cpp" = "xunset"
325: then
326: enable_cpp=$enable_pcre8
327: fi
328:
329: # Make sure that if enable_cpp was set, that enable_pcre8 support is enabled
330: if test "x$enable_cpp" = "xyes"
331: then
332: if test "x$enable_pcre8" = "xno"
333: then
334: AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters])
335: fi
1.1 misho 336: fi
337:
338: # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
1.1.1.2 misho 339: # Also check that UTF support is not requested, because PCRE cannot handle
340: # EBCDIC and UTF in the same build. To do so it would need to use different
1.1 misho 341: # character constants depending on the mode.
342: #
343: if test "x$enable_ebcdic" = "xyes"
344: then
345: enable_rebuild_chartables=yes
1.1.1.2 misho 346: if test "x$enable_utf" = "xyes"
1.1 misho 347: then
1.1.1.2 misho 348: AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time])
1.1 misho 349: fi
350: fi
351:
352: # Convert the newline identifier into the appropriate integer value.
353: case "$enable_newline" in
354: lf) ac_pcre_newline_value=10 ;;
355: cr) ac_pcre_newline_value=13 ;;
356: crlf) ac_pcre_newline_value=3338 ;;
357: anycrlf) ac_pcre_newline_value=-2 ;;
358: any) ac_pcre_newline_value=-1 ;;
359: *)
360: AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
361: ;;
362: esac
363:
364: # Check argument to --with-link-size
365: case "$with_link_size" in
366: 2|3|4) ;;
367: *)
368: AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
369: ;;
370: esac
371:
372: AH_TOP([
373: /* On Unix-like systems config.h.in is converted by "configure" into config.h.
374: Some other environments also support the use of "configure". PCRE is written in
375: Standard C, but there are a few non-standard things it can cope with, allowing
376: it to run on SunOS4 and other "close to standard" systems.
377:
378: If you are going to build PCRE "by hand" on a system without "configure" you
379: should copy the distributed config.h.generic to config.h, and then set up the
380: macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
381: all of your compile commands, so that config.h is included at the start of
382: every source.
383:
384: Alternatively, you can avoid editing by using -D on the compiler command line
385: to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
386:
387: PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
388: HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
389: them both to 0; an emulation function will be used. */])
390:
391: # Checks for header files.
392: AC_HEADER_STDC
393: AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
394:
395: # The files below are C++ header files.
396: pcre_have_type_traits="0"
397: pcre_have_bits_type_traits="0"
398: if test "x$enable_cpp" = "xyes" -a -n "$CXX"
399: then
400: AC_LANG_PUSH(C++)
401:
402: # Older versions of pcre defined pcrecpp::no_arg, but in new versions
403: # it's called pcrecpp::RE::no_arg. For backwards ABI compatibility,
404: # we want to make one an alias for the other. Different systems do
405: # this in different ways. Some systems, for instance, can do it via
406: # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
407: OLD_LDFLAGS="$LDFLAGS"
408: for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
409: "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
410: AC_MSG_CHECKING([for alias support in the linker])
411: LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
412: # We try to run the linker with this new ld flag. If the link fails,
413: # we give up and remove the new flag from LDFLAGS.
414: AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
415: class RE { static int no_arg; };
416: int RE::no_arg;
417: }],
418: [])],
419: [AC_MSG_RESULT([yes]);
420: EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
421: break;],
422: AC_MSG_RESULT([no]))
423: done
424: LDFLAGS="$OLD_LDFLAGS"
425:
426: # We could be more clever here, given we're doing AC_SUBST with this
427: # (eg set a var to be the name of the include file we want). But we're not
428: # so it's easy to change back to 'regular' autoconf vars if we needed to.
429: AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
430: [pcre_have_cpp_headers="0"])
431: AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
432: [pcre_have_bits_type_traits="0"])
433: AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
434: [pcre_have_type_traits="0"])
435:
436: # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
437: # in a c++ context. This matters becuase strtoimax is C99 and may not
438: # be supported by the C++ compiler.)
439: # Figure out how to create a longlong from a string: strtoll and
440: # equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a
441: # strtoll, for instance, but it only takes 2 args instead of 3!
442: # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
443: AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
444: AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
445: AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
446: AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
447: have_strto_fn=0
448: for fn in strtoq strtoll _strtoi64 strtoimax; do
449: AC_MSG_CHECKING([for $fn])
450: if test "$fn" = strtoimax; then
451: include=stdint.h
452: else
453: include=stdlib.h
454: fi
455: AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
456: [char* e; return $fn("100", &e, 10)])],
457: [AC_MSG_RESULT(yes)
458: AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
459: [Define to 1 if you have `$fn'.])
460: have_strto_fn=1
461: break],
462: [AC_MSG_RESULT(no)])
463: done
464:
465: if test "$have_strto_fn" = 1; then
466: AC_CHECK_TYPES([long long],
467: [pcre_have_long_long="1"],
468: [pcre_have_long_long="0"])
469: AC_CHECK_TYPES([unsigned long long],
470: [pcre_have_ulong_long="1"],
471: [pcre_have_ulong_long="0"])
472: else
473: pcre_have_long_long="0"
474: pcre_have_ulong_long="0"
475: fi
476: AC_SUBST(pcre_have_long_long)
477: AC_SUBST(pcre_have_ulong_long)
478:
479: AC_LANG_POP
480: fi
481: # Using AC_SUBST eliminates the need to include config.h in a public .h file
482: AC_SUBST(pcre_have_type_traits)
483: AC_SUBST(pcre_have_bits_type_traits)
484:
485: # Conditional compilation
1.1.1.2 misho 486: AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes")
487: AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
1.1 misho 488: AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
489: AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
490: AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
1.1.1.2 misho 491: AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
1.1 misho 492:
493: # Checks for typedefs, structures, and compiler characteristics.
494:
495: AC_C_CONST
496: AC_TYPE_SIZE_T
497:
498: # Checks for library functions.
499:
500: AC_CHECK_FUNCS(bcopy memmove strerror)
501:
502: # Check for the availability of libz (aka zlib)
503:
504: AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
505: AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
506:
507: # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
508: # as for libz. However, this had the following problem, diagnosed and fixed by
509: # a user:
510: #
511: # - libbz2 uses the Pascal calling convention (WINAPI) for the functions
512: # under Win32.
513: # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
514: # therefore missing the function definition.
515: # - The compiler thus generates a "C" signature for the test function.
516: # - The linker fails to find the "C" function.
517: # - PCRE fails to configure if asked to do so against libbz2.
518: #
519: # Solution:
520: #
521: # - Replace the AC_CHECK_LIB test with a custom test.
522:
523: AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
524: # Original test
525: # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
526: #
527: # Custom test follows
528:
529: AC_MSG_CHECKING([for libbz2])
530: OLD_LIBS="$LIBS"
531: LIBS="$LIBS -lbz2"
532: AC_LINK_IFELSE([AC_LANG_PROGRAM([[
533: #ifdef HAVE_BZLIB_H
534: #include <bzlib.h>
535: #endif]],
536: [[return (int)BZ2_bzopen("conftest", "rb");]])],
537: [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
538: AC_MSG_RESULT([no]))
539: LIBS="$OLD_LIBS"
540:
541: # Check for the availabiity of libreadline
542:
1.1.1.3 ! misho 543: if test "$enable_pcretest_libreadline" = "yes"; then
! 544: AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
! 545: AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
! 546: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lreadline"],
! 547: [unset ac_cv_lib_readline_readline;
! 548: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltinfo"],
! 549: [unset ac_cv_lib_readline_readline;
! 550: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lcurses"],
! 551: [unset ac_cv_lib_readline_readline;
! 552: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncurses"],
! 553: [unset ac_cv_lib_readline_readline;
! 554: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncursesw"],
! 555: [unset ac_cv_lib_readline_readline;
! 556: AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltermcap"],
! 557: [LIBREADLINE=""],
! 558: [-ltermcap])],
! 559: [-lncursesw])],
! 560: [-lncurses])],
! 561: [-lcurses])],
! 562: [-ltinfo])])
! 563: AC_SUBST(LIBREADLINE)
! 564: if test -n "$LIBREADLINE"; then
! 565: if test "$LIBREADLINE" != "-lreadline"; then
! 566: echo "-lreadline needs $LIBREADLINE"
! 567: LIBREADLINE="-lreadline $LIBREADLINE"
! 568: fi
! 569: fi
! 570: fi
! 571:
! 572:
! 573: # Check for the availability of libedit. Different distributions put its
! 574: # headers in different places. Try to cover the most common ones.
! 575:
! 576: if test "$enable_pcretest_libedit" = "yes"; then
! 577: AC_CHECK_HEADERS([editline/readline.h], [HAVE_EDITLINE_READLINE_H=1],
! 578: [AC_CHECK_HEADERS([edit/readline/readline.h], [HAVE_READLINE_READLINE_H=1],
! 579: [AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_READLINE_H=1])])])
! 580: AC_CHECK_LIB([edit], [readline], [LIBEDIT="-ledit"])
1.1.1.2 misho 581: fi
1.1 misho 582:
583: # This facilitates -ansi builds under Linux
584: dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
585:
586: PCRE_STATIC_CFLAG=""
587: if test "x$enable_shared" = "xno" ; then
588: AC_DEFINE([PCRE_STATIC], [1], [
589: Define if linking statically (TODO: make nice with Libtool)])
590: PCRE_STATIC_CFLAG="-DPCRE_STATIC"
591: fi
592: AC_SUBST(PCRE_STATIC_CFLAG)
593:
594: # Here is where pcre specific defines are handled
595:
1.1.1.2 misho 596: if test "$enable_pcre8" = "yes"; then
597: AC_DEFINE([SUPPORT_PCRE8], [], [
598: Define to enable the 8 bit PCRE library.])
599: fi
600:
601: if test "$enable_pcre16" = "yes"; then
602: AC_DEFINE([SUPPORT_PCRE16], [], [
603: Define to enable the 16 bit PCRE library.])
604: fi
605:
1.1 misho 606: if test "$enable_jit" = "yes"; then
607: AC_DEFINE([SUPPORT_JIT], [], [
608: Define to enable support for Just-In-Time compiling.])
609: else
610: enable_pcregrep_jit="no"
611: fi
612:
613: if test "$enable_pcregrep_jit" = "yes"; then
614: AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
615: Define to enable JIT support in pcregrep.])
616: fi
617:
1.1.1.2 misho 618: if test "$enable_utf" = "yes"; then
619: AC_DEFINE([SUPPORT_UTF], [], [
620: Define to enable support for the UTF-8/16 Unicode encoding. This
621: will work even in an EBCDIC environment, but it is incompatible
622: with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
623: code *or* ASCII/UTF-8/16, but not both at once.])
1.1 misho 624: fi
625:
626: if test "$enable_unicode_properties" = "yes"; then
627: AC_DEFINE([SUPPORT_UCP], [], [
628: Define to enable support for Unicode properties.])
629: fi
630:
631: if test "$enable_stack_for_recursion" = "no"; then
632: AC_DEFINE([NO_RECURSE], [], [
633: PCRE uses recursive function calls to handle backtracking while
634: matching. This can sometimes be a problem on systems that have
635: stacks of limited size. Define NO_RECURSE to get a version that
636: doesn't use recursion in the match() function; instead it creates
637: its own stack by steam using pcre_recurse_malloc() to obtain memory
638: from the heap. For more detail, see the comments and other stuff
639: just above the match() function. On systems that support it,
640: "configure" can be used to set this in the Makefile
641: (use --disable-stack-for-recursion).])
642: fi
643:
644: if test "$enable_pcregrep_libz" = "yes"; then
645: AC_DEFINE([SUPPORT_LIBZ], [], [
646: Define to allow pcregrep to be linked with libz, so that it is
647: able to handle .gz files.])
648: fi
649:
650: if test "$enable_pcregrep_libbz2" = "yes"; then
651: AC_DEFINE([SUPPORT_LIBBZ2], [], [
652: Define to allow pcregrep to be linked with libbz2, so that it is
653: able to handle .bz2 files.])
654: fi
655:
656: if test $with_pcregrep_bufsize -lt 8192 ; then
657: with_pcregrep_bufsize="8192"
658: fi
659:
660: AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
661: The value of PCREGREP_BUFSIZE determines the size of buffer used by
662: pcregrep to hold parts of the file it is searching. On systems that
663: support it, "configure" can be used to override the default, which is
664: 8192. This is also the minimum value. The actual amount of memory used by
665: pcregrep is three times this number, because it allows for the buffering of
666: "before" and "after" lines.])
667:
1.1.1.3 ! misho 668: if test "$enable_pcretest_libedit" = "yes"; then
! 669: AC_DEFINE([SUPPORT_LIBEDIT], [], [
! 670: Define to allow pcretest to be linked with libedit.])
! 671: LIBREADLINE="$LIBEDIT"
! 672: elif test "$enable_pcretest_libreadline" = "yes"; then
1.1 misho 673: AC_DEFINE([SUPPORT_LIBREADLINE], [], [
674: Define to allow pcretest to be linked with libreadline.])
675: fi
676:
677: AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
678: The value of NEWLINE determines the newline character sequence. On
679: systems that support it, "configure" can be used to override the
680: default, which is 10. The possible values are 10 (LF), 13 (CR),
681: 3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
682:
683: if test "$enable_bsr_anycrlf" = "yes"; then
684: AC_DEFINE([BSR_ANYCRLF], [], [
685: By default, the \R escape sequence matches any Unicode line ending
686: character or sequence of characters. If BSR_ANYCRLF is defined, this is
687: changed so that backslash-R matches only CR, LF, or CRLF. The build-
688: time default can be overridden by the user of PCRE at runtime. On
689: systems that support it, "configure" can be used to override the
690: default.])
691: fi
692:
693: AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
694: The value of LINK_SIZE determines the number of bytes used to store
695: links as offsets within the compiled regex. The default is 2, which
696: allows for compiled patterns up to 64K long. This covers the vast
697: majority of cases. However, PCRE can also be compiled to use 3 or 4
698: bytes instead. This allows for longer patterns in extreme cases. On
699: systems that support it, "configure" can be used to override this default.])
700:
701: AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
702: When calling PCRE via the POSIX interface, additional working storage
703: is required for holding the pointers to capturing substrings because
704: PCRE requires three integers per substring, whereas the POSIX
705: interface provides only two. If the number of expected substrings is
706: small, the wrapper function uses space on the stack, because this is
707: faster than using malloc() for each call. The threshold above which
708: the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
709: systems that support it, "configure" can be used to override this
710: default.])
711:
712: AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
713: The value of MATCH_LIMIT determines the default number of times the
714: internal match() function can be called during a single execution of
715: pcre_exec(). There is a runtime interface for setting a different
716: limit. The limit exists in order to catch runaway regular
717: expressions that take for ever to determine that they do not match.
718: The default is set very large so that it does not accidentally catch
719: legitimate cases. On systems that support it, "configure" can be
720: used to override this default default.])
721:
722: AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
723: The above limit applies to all calls of match(), whether or not they
724: increase the recursion depth. In some environments it is desirable
725: to limit the depth of recursive calls of match() more strictly, in
726: order to restrict the maximum amount of stack (or heap, if
727: NO_RECURSE is defined) that is used. The value of
728: MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
729: have any useful effect, it must be less than the value of
730: MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
731: There is a runtime method for setting a different limit. On systems
732: that support it, "configure" can be used to override the default.])
733:
734: AC_DEFINE([MAX_NAME_SIZE], [32], [
735: This limit is parameterized just in case anybody ever wants to
736: change it. Care must be taken if it is increased, because it guards
737: against integer overflow caused by enormously large patterns.])
738:
739: AC_DEFINE([MAX_NAME_COUNT], [10000], [
740: This limit is parameterized just in case anybody ever wants to
741: change it. Care must be taken if it is increased, because it guards
742: against integer overflow caused by enormously large patterns.])
743:
744: AH_VERBATIM([PCRE_EXP_DEFN], [
745: /* If you are compiling for a system other than a Unix-like system or
746: Win32, and it needs some magic to be inserted before the definition
747: of a function that is exported by the library, define this macro to
748: contain the relevant magic. If you do not define this macro, it
749: defaults to "extern" for a C compiler and "extern C" for a C++
750: compiler on non-Win32 systems. This macro apears at the start of
751: every exported function that is part of the external API. It does
752: not appear on functions that are "external" in the C sense, but
753: which are internal to the library. */
754: #undef PCRE_EXP_DEFN])
755:
756: if test "$enable_ebcdic" = "yes"; then
757: AC_DEFINE_UNQUOTED([EBCDIC], [], [
758: If you are compiling for a system that uses EBCDIC instead of ASCII
759: character codes, define this macro as 1. On systems that can use
760: "configure", this can be done via --enable-ebcdic. PCRE will then
761: assume that all input strings are in EBCDIC. If you do not define
1.1.1.2 misho 762: this macro, PCRE will assume input strings are ASCII or UTF-8/16
763: Unicode. It is not possible to build a version of PCRE that
764: supports both EBCDIC and UTF-8/16.])
1.1 misho 765: fi
766:
767: # Platform specific issues
768: NO_UNDEFINED=
769: EXPORT_ALL_SYMBOLS=
770: case $host_os in
771: cygwin* | mingw* )
772: if test X"$enable_shared" = Xyes; then
773: NO_UNDEFINED="-no-undefined"
774: EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
775: fi
776: ;;
777: esac
778:
779: # The extra LDFLAGS for each particular library
780: # (Note: The libpcre*_version bits are m4 variables, assigned above)
781:
782: EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
783: $NO_UNDEFINED -version-info libpcre_version"
784:
1.1.1.2 misho 785: EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \
786: $NO_UNDEFINED -version-info libpcre16_version"
787:
1.1 misho 788: EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
789: $NO_UNDEFINED -version-info libpcreposix_version"
790:
791: EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
792: $NO_UNDEFINED -version-info libpcrecpp_version \
793: $EXPORT_ALL_SYMBOLS"
794:
795: AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
1.1.1.2 misho 796: AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS)
1.1 misho 797: AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
798: AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
799:
1.1.1.2 misho 800: # When we run 'make distcheck', use these arguments. Turning off compiler
801: # optimization makes it run faster.
802: DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
1.1 misho 803: AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
804:
805: # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
806: # specified, the relevant library is available.
807:
808: if test "$enable_pcregrep_libz" = "yes"; then
809: if test "$HAVE_ZLIB_H" != "1"; then
810: echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
811: exit 1
812: fi
813: if test "$HAVE_LIBZ" != "1"; then
814: echo "** Cannot --enable-pcregrep-libz because libz was not found"
815: exit 1
816: fi
817: LIBZ="-lz"
818: fi
819: AC_SUBST(LIBZ)
820:
821: if test "$enable_pcregrep_libbz2" = "yes"; then
822: if test "$HAVE_BZLIB_H" != "1"; then
823: echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
824: exit 1
825: fi
826: if test "$HAVE_LIBBZ2" != "1"; then
827: echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
828: exit 1
829: fi
830: LIBBZ2="-lbz2"
831: fi
832: AC_SUBST(LIBBZ2)
833:
834: # Similarly for --enable-pcretest-readline
835:
1.1.1.3 ! misho 836: if test "$enable_pcretest_libedit" = "yes"; then
! 837: if test "$enable_pcretest_libreadline" = "yes"; then
! 838: echo "** Cannot use both --enable-pcretest-libedit and --enable-pcretest-readline"
! 839: exit 1
! 840: fi
! 841: if test "$HAVE_EDITLINE_READLINE_H" != "1" -a \
! 842: "$HAVE_READLINE_READLINE_H" != "1"; then
! 843: echo "** Cannot --enable-pcretest-libedit because neither editline/readline.h"
! 844: echo "** nor readline/readline.h was found."
! 845: exit 1
! 846: fi
! 847: if test -z "$LIBEDIT"; then
! 848: echo "** Cannot --enable-pcretest-libedit because libedit library was not found."
! 849: exit 1
! 850: fi
! 851: fi
! 852:
1.1 misho 853: if test "$enable_pcretest_libreadline" = "yes"; then
854: if test "$HAVE_READLINE_H" != "1"; then
855: echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
856: exit 1
857: fi
858: if test "$HAVE_HISTORY_H" != "1"; then
859: echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
860: exit 1
861: fi
1.1.1.2 misho 862: if test -z "$LIBREADLINE"; then
863: echo "** Cannot --enable-pcretest-readline because readline library was not found."
864: exit 1
865: fi
1.1 misho 866: fi
867:
868: # Produce these files, in addition to config.h.
869: AC_CONFIG_FILES(
870: Makefile
871: libpcre.pc
1.1.1.2 misho 872: libpcre16.pc
873: libpcreposix.pc
1.1 misho 874: libpcrecpp.pc
875: pcre-config
876: pcre.h
877: pcre_stringpiece.h
878: pcrecpparg.h
879: )
880:
881: # Make the generated script files executable.
882: AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
883:
884: # Make sure that pcre_chartables.c is removed in case the method for
885: # creating it was changed by reconfiguration.
886: AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
887:
888: AC_OUTPUT
889:
890: # Print out a nice little message after configure is run displaying your
891: # chosen options.
892:
893: cat <<EOF
894:
895: $PACKAGE-$VERSION configuration summary:
896:
897: Install prefix .................. : ${prefix}
898: C preprocessor .................. : ${CPP}
899: C compiler ...................... : ${CC}
900: C++ preprocessor ................ : ${CXXCPP}
901: C++ compiler .................... : ${CXX}
902: Linker .......................... : ${LD}
903: C preprocessor flags ............ : ${CPPFLAGS}
904: C compiler flags ................ : ${CFLAGS}
905: C++ compiler flags .............. : ${CXXFLAGS}
906: Linker flags .................... : ${LDFLAGS}
907: Extra libraries ................. : ${LIBS}
908:
1.1.1.2 misho 909: Build 8 bit pcre library ........ : ${enable_pcre8}
910: Build 16 bit pcre library ....... : ${enable_pcre16}
1.1 misho 911: Build C++ library ............... : ${enable_cpp}
912: Enable JIT compiling support .... : ${enable_jit}
1.1.1.2 misho 913: Enable UTF-8/16 support ......... : ${enable_utf}
1.1 misho 914: Unicode properties .............. : ${enable_unicode_properties}
915: Newline char/sequence ........... : ${enable_newline}
916: \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
917: EBCDIC coding ................... : ${enable_ebcdic}
918: Rebuild char tables ............. : ${enable_rebuild_chartables}
919: Use stack recursion ............. : ${enable_stack_for_recursion}
920: POSIX mem threshold ............. : ${with_posix_malloc_threshold}
921: Internal link size .............. : ${with_link_size}
922: Match limit ..................... : ${with_match_limit}
923: Match limit recursion ........... : ${with_match_limit_recursion}
924: Build shared libs ............... : ${enable_shared}
925: Build static libs ............... : ${enable_static}
926: Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
927: Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
928: Link pcregrep with libz ......... : ${enable_pcregrep_libz}
929: Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
1.1.1.3 ! misho 930: Link pcretest with libedit ...... : ${enable_pcretest_libedit}
1.1 misho 931: Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
932:
933: EOF
934:
935: dnl end configure.ac
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