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revision 198 by ph10, Tue Jul 31 11:11:23 2007 UTC revision 938 by ph10, Sun Feb 26 16:08:15 2012 UTC
# Line 1  Line 1 
1  dnl Process this file with autoconf to produce a configure script.  dnl Process this file with autoconf to produce a configure script.
2    
3  dnl NOTE FOR MAINTAINERS: Do not use major or minor version numbers with  dnl NOTE FOR MAINTAINERS: Do not use minor version numbers 08 or 09 because
4  dnl leading zeros, because they may be treated as octal constants. The  dnl the leading zeros may cause them to be treated as invalid octal constants
5  dnl PCRE_PRERELEASE feature is for identifying release candidates. It might  dnl if a PCRE user writes code that uses PCRE_MINOR as a number. There is now
6  dnl be defined as -RC2, for example. For real releases, it should be defined  dnl a check further down that throws an error if 08 or 09 are used.
7  dnl empty.  
8    dnl The PCRE_PRERELEASE feature is for identifying release candidates. It might
9  m4_define(pcre_major, [7])  dnl be defined as -RC2, for example. For real releases, it should be empty.
10  m4_define(pcre_minor, [3])  
11  m4_define(pcre_prerelease, [-RC2])  m4_define(pcre_major, [8])
12  m4_define(pcre_date, [2007-07-31])  m4_define(pcre_minor, [31])
13    m4_define(pcre_prerelease, [-RC1])
14    m4_define(pcre_date, [2012-02-012])
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.
18    
19  # Libtool shared library interface versions (current:revision:age)  # Libtool shared library interface versions (current:revision:age)
20  m4_define(libpcre_version, [0:1:0])  m4_define(libpcre_version, [1:0:0])
21    m4_define(libpcre16_version, [0:0:0])
22  m4_define(libpcreposix_version, [0:0:0])  m4_define(libpcreposix_version, [0:0:0])
23  m4_define(libpcrecpp_version, [0:0:0])  m4_define(libpcrecpp_version, [0:0:0])
24    
# Line 20  AC_PREREQ(2.57) Line 26  AC_PREREQ(2.57)
26  AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)  AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
27  AC_CONFIG_SRCDIR([pcre.h.in])  AC_CONFIG_SRCDIR([pcre.h.in])
28  AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])  AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
29    m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
30  AC_CONFIG_HEADERS(config.h)  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  # 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  # "-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  # getting rid of the -g (which I don't think is needed for a production
# Line 60  then Line 70  then
70    fi    fi
71  fi  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  AC_PROG_INSTALL
83  AC_LIBTOOL_WIN32_DLL  AC_LIBTOOL_WIN32_DLL
84  AC_PROG_LIBTOOL  LT_INIT
85  AC_PROG_LN_S  AC_PROG_LN_S
86    
87  PCRE_MAJOR="pcre_major"  PCRE_MAJOR="pcre_major"
# Line 71  PCRE_MINOR="pcre_minor" Line 89  PCRE_MINOR="pcre_minor"
89  PCRE_PRERELEASE="pcre_prerelease"  PCRE_PRERELEASE="pcre_prerelease"
90  PCRE_DATE="pcre_date"  PCRE_DATE="pcre_date"
91    
92    if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09"
93    then
94      echo "***"
95      echo "*** Minor version number $PCRE_MINOR must not be used. ***"
96      echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
97      echo "***"
98      exit 1
99    fi
100    
101  AC_SUBST(PCRE_MAJOR)  AC_SUBST(PCRE_MAJOR)
102  AC_SUBST(PCRE_MINOR)  AC_SUBST(PCRE_MINOR)
103  AC_SUBST(PCRE_PRERELEASE)  AC_SUBST(PCRE_PRERELEASE)
# Line 82  then Line 109  then
109    htmldir='${docdir}/html'    htmldir='${docdir}/html'
110  fi  fi
111    
112  # Handle --disable-cpp  # 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    
126    # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
127    # pcre-config.
128  AC_ARG_ENABLE(cpp,  AC_ARG_ENABLE(cpp,
129                AS_HELP_STRING([--disable-cpp],                AS_HELP_STRING([--disable-cpp],
130                               [disable C++ support]),                               [disable C++ support]),
131                , enable_cpp=yes)                , enable_cpp=unset)
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  # Handle --enable-rebuild-chartables
147  AC_ARG_ENABLE(rebuild-chartables,  AC_ARG_ENABLE(rebuild-chartables,
# Line 97  AC_ARG_ENABLE(rebuild-chartables, Line 152  AC_ARG_ENABLE(rebuild-chartables,
152  # Handle --enable-utf8 (disabled by default)  # Handle --enable-utf8 (disabled by default)
153  AC_ARG_ENABLE(utf8,  AC_ARG_ENABLE(utf8,
154                AS_HELP_STRING([--enable-utf8],                AS_HELP_STRING([--enable-utf8],
155                               [enable UTF-8 support]),                               [another name for --enable-utf. Kept only for compatibility reasons]),
156                , enable_utf8=unset)                , enable_utf8=unset)
157    
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    
164  # Handle --enable-unicode-properties  # Handle --enable-unicode-properties
165  AC_ARG_ENABLE(unicode-properties,  AC_ARG_ENABLE(unicode-properties,
166                AS_HELP_STRING([--enable-unicode-properties],                AS_HELP_STRING([--enable-unicode-properties],
167                               [enable Unicode properties support (implies --enable-utf8)]),                               [enable Unicode properties support (implies --enable-utf)]),
168                , enable_unicode_properties=no)                , enable_unicode_properties=no)
169    
170  # Handle --enable-newline=NL  # Handle --enable-newline=NL
# Line 136  AC_ARG_ENABLE(newline-is-any, Line 197  AC_ARG_ENABLE(newline-is-any,
197                ac_pcre_newline=any)                ac_pcre_newline=any)
198  enable_newline="$ac_pcre_newline"  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  # Handle --enable-ebcdic
207  AC_ARG_ENABLE(ebcdic,  AC_ARG_ENABLE(ebcdic,
208                AS_HELP_STRING([--enable-ebcdic],                AS_HELP_STRING([--enable-ebcdic],
209                               [assume EBCDIC coding rather than ASCII; use this only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),                               [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
210                , enable_ebcdic=no)                , enable_ebcdic=no)
211    
212  # Handle --disable-stack-for-recursion  # Handle --disable-stack-for-recursion
# Line 148  AC_ARG_ENABLE(stack-for-recursion, Line 215  AC_ARG_ENABLE(stack-for-recursion,
215                               [don't use stack recursion when matching]),                               [don't use stack recursion when matching]),
216                , enable_stack_for_recursion=yes)                , 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    
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    
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  # Handle --with-posix-malloc-threshold=NBYTES
249  AC_ARG_WITH(posix-malloc-threshold,  AC_ARG_WITH(posix-malloc-threshold,
250              AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],              AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
# Line 179  AC_ARG_WITH(match-limit-recursion, Line 276  AC_ARG_WITH(match-limit-recursion,
276                             [default limit on internal recursion (default=MATCH_LIMIT)]),                             [default limit on internal recursion (default=MATCH_LIMIT)]),
277              , with_match_limit_recursion=MATCH_LIMIT)              , with_match_limit_recursion=MATCH_LIMIT)
278    
279  # Make sure that if enable_unicode_properties was set, that UTF-8 support  # Copy enable_utf8 value to enable_utf for compatibility reasons
280  # is enabled.  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.
308  if test "x$enable_unicode_properties" = "xyes"  if test "x$enable_unicode_properties" = "xyes"
309  then  then
310    if test "x$enable_utf8" = "xno"    if test "x$enable_utf" = "xno"
311    then    then
312      AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])      AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support])
313    fi    fi
314    enable_utf8=yes    enable_utf=yes
315    fi
316    
317    # enable_utf is disabled by default.
318    if test "x$enable_utf" = "xunset"
319    then
320      enable_utf=no
321    fi
322    
323    # enable_cpp copies the value of enable_pcre8 by default
324    if test "x$enable_cpp" = "xunset"
325    then
326      enable_cpp=$enable_pcre8
327  fi  fi
328    
329  if test "x$enable_utf8" = "xunset"  # Make sure that if enable_cpp was set, that enable_pcre8 support is enabled
330    if test "x$enable_cpp" = "xyes"
331  then  then
332    enable_utf8=no    if test "x$enable_pcre8" = "xno"
333      then
334        AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters])
335      fi
336  fi  fi
337    
338  # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.  # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
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
341    # character constants depending on the mode.
342  #  #
343  if test "x$enable_ebcdic" = "xyes"  if test "x$enable_ebcdic" = "xyes"
344  then  then
345    enable_rebuild_chartables=yes    enable_rebuild_chartables=yes
346      if test "x$enable_utf" = "xyes"
347      then
348        AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time])
349      fi
350  fi  fi
351    
352  # Convert the newline identifier into the appropriate integer value.  # Convert the newline identifier into the appropriate integer value.
# Line 231  it to run on SunOS4 and other "close to Line 377  it to run on SunOS4 and other "close to
377    
378  If you are going to build PCRE "by hand" on a system without "configure" you  If you are going to build PCRE "by hand" on a system without "configure" you
379  should copy the distributed config.h.generic to config.h, and then set up the  should copy the distributed config.h.generic to config.h, and then set up the
380  macros the way you need them. Alternatively, you can avoid editing by using -D  macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
381  on the compiler command line to set the macro values.  all of your compile commands, so that config.h is included at the start of
382    every source.
383    
384    Alternatively, you can avoid editing by using -D on the compiler command line
385    to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
386    
387  PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if  PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
388  HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set  HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
# Line 249  if test "x$enable_cpp" = "xyes" -a -n "$ Line 399  if test "x$enable_cpp" = "xyes" -a -n "$
399  then  then
400  AC_LANG_PUSH(C++)  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  # 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  # (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.  # so it's easy to change back to 'regular' autoconf vars if we needed to.
# Line 258  AC_CHECK_HEADERS(bits/type_traits.h, [pc Line 432  AC_CHECK_HEADERS(bits/type_traits.h, [pc
432                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
433  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
434                                  [pcre_have_type_traits="0"])                                  [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 "$have_strto_fn" = 1; then
466      AC_CHECK_TYPES([long long],
467                     [pcre_have_long_long="1"],
468                     [pcre_have_long_long="0"])
469      AC_CHECK_TYPES([unsigned long long],
470                     [pcre_have_ulong_long="1"],
471                     [pcre_have_ulong_long="0"])
472    else
473      pcre_have_long_long="0"
474      pcre_have_ulong_long="0"
475    fi
476    AC_SUBST(pcre_have_long_long)
477    AC_SUBST(pcre_have_ulong_long)
478    
479  AC_LANG_POP  AC_LANG_POP
480  fi  fi
481  # Using AC_SUBST eliminates the need to include config.h in a public .h file  # Using AC_SUBST eliminates the need to include config.h in a public .h file
# Line 265  AC_SUBST(pcre_have_type_traits) Line 483  AC_SUBST(pcre_have_type_traits)
483  AC_SUBST(pcre_have_bits_type_traits)  AC_SUBST(pcre_have_bits_type_traits)
484    
485  # Conditional compilation  # Conditional compilation
486    AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes")
487    AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
488  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
489  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
490    AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
491    AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
492    
493  # Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
494    
495  AC_C_CONST  AC_C_CONST
496  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
497    
 AC_CHECK_TYPES([long long],  
                [pcre_have_long_long="1"],  
                [pcre_have_long_long="0"])  
 AC_CHECK_TYPES([unsigned long long],  
                [pcre_have_ulong_long="1"],  
                [pcre_have_ulong_long="0"])  
 AC_SUBST(pcre_have_long_long)  
 AC_SUBST(pcre_have_ulong_long)  
   
498  # Checks for library functions.  # Checks for library functions.
499    
500  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  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="$OLD_LIBS"
540    
541    # Check for the availabiity of libreadline
542    
543    if test "$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"])
581    fi
582    
583  # This facilitates -ansi builds under Linux  # This facilitates -ansi builds under Linux
584  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
585    
586    PCRE_STATIC_CFLAG=""
587  if test "x$enable_shared" = "xno" ; then  if test "x$enable_shared" = "xno" ; then
588    AC_DEFINE([PCRE_STATIC], [1], [    AC_DEFINE([PCRE_STATIC], [1], [
589      Define if linking statically (TODO: make nice with Libtool)])      Define if linking statically (TODO: make nice with Libtool)])
590      PCRE_STATIC_CFLAG="-DPCRE_STATIC"
591  fi  fi
592    AC_SUBST(PCRE_STATIC_CFLAG)
593    
594  # Here is where pcre specific defines are handled  # Here is where pcre specific defines are handled
595    
596  if test "$enable_utf8" = "yes"; then  if test "$enable_pcre8" = "yes"; then
597    AC_DEFINE([SUPPORT_UTF8], [], [    AC_DEFINE([SUPPORT_PCRE8], [], [
598      Define to enable support for the UTF-8 Unicode encoding.])      Define to enable the 8 bit PCRE library.])
599    fi
600    
601    if test "$enable_pcre16" = "yes"; then
602      AC_DEFINE([SUPPORT_PCRE16], [], [
603        Define to enable the 16 bit PCRE library.])
604    fi
605    
606    if test "$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 "$enable_pcregrep_jit" = "yes"; then
614      AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
615        Define to enable JIT support in pcregrep.])
616    fi
617    
618    if test "$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.])
624  fi  fi
625    
626  if test "$enable_unicode_properties" = "yes"; then  if test "$enable_unicode_properties" = "yes"; then
627    AC_DEFINE([SUPPORT_UCP], [], [    AC_DEFINE([SUPPORT_UCP], [], [
628      Define to enable support for Unicode properties])      Define to enable support for Unicode properties.])
629  fi  fi
630    
631  if test "$enable_stack_for_recursion" = "no"; then  if test "$enable_stack_for_recursion" = "no"; then
# Line 319  if test "$enable_stack_for_recursion" = Line 641  if test "$enable_stack_for_recursion" =
641      (use --disable-stack-for-recursion).])      (use --disable-stack-for-recursion).])
642  fi  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    
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 "$enable_pcretest_libreadline" = "yes"; then
673      AC_DEFINE([SUPPORT_LIBREADLINE], [], [
674        Define to allow pcretest to be linked with libreadline.])
675    fi
676    
677  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
678    The value of NEWLINE determines the newline character sequence. On    The value of NEWLINE determines the newline character sequence. On
679    Unix-like systems, "configure" can be used to override the default,    systems that support it, "configure" can be used to override the
680    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),    default, which is 10. The possible values are 10 (LF), 13 (CR),
681    -1 (ANY), or -2 (ANYCRLF).])    3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
682    
683    if test "$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], [$with_link_size], [  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
694    The value of LINK_SIZE determines the number of bytes used to store    The value of LINK_SIZE determines the number of bytes used to store
# Line 376  AC_DEFINE([MAX_NAME_COUNT], [10000], [ Line 741  AC_DEFINE([MAX_NAME_COUNT], [10000], [
741    change it. Care must be taken if it is increased, because it guards    change it. Care must be taken if it is increased, because it guards
742    against integer overflow caused by enormously large patterns.])    against integer overflow caused by enormously large patterns.])
743    
 AC_DEFINE([MAX_DUPLENGTH], [30000], [  
   This limit is parameterized just in case anybody ever wants to  
   change it. Care must be taken if it is increased, because it guards  
   against integer overflow caused by enormously large patterns.])  
   
744  AH_VERBATIM([PCRE_EXP_DEFN], [  AH_VERBATIM([PCRE_EXP_DEFN], [
745  /* If you are compiling for a system other than a Unix-like system or  /* 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     Win32, and it needs some magic to be inserted before the definition
# Line 397  if test "$enable_ebcdic" = "yes"; then Line 757  if test "$enable_ebcdic" = "yes"; then
757    AC_DEFINE_UNQUOTED([EBCDIC], [], [    AC_DEFINE_UNQUOTED([EBCDIC], [], [
758      If you are compiling for a system that uses EBCDIC instead of ASCII      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      character codes, define this macro as 1. On systems that can use
760      "configure", this can be done via --enable-ebcdic.])      "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
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.])
765  fi  fi
766    
767  # Platform specific issues  # Platform specific issues
# Line 415  esac Line 779  esac
779  # The extra LDFLAGS for each particular library  # The extra LDFLAGS for each particular library
780  # (Note: The libpcre*_version bits are m4 variables, assigned above)  # (Note: The libpcre*_version bits are m4 variables, assigned above)
781    
782  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
783                           $NO_UNDEFINED -version-info libpcre_version"
784    
785    EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \
786                           $NO_UNDEFINED -version-info libpcre16_version"
787    
788  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
789                                $NO_UNDEFINED -version-info libpcreposix_version"
790    
791  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
792                              $NO_UNDEFINED -version-info libpcrecpp_version \
793                              $EXPORT_ALL_SYMBOLS"
794    
795  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
796    AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS)
797  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
798  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
799    
800  # When we run 'make distcheck', use these arguments.  # When we run 'make distcheck', use these arguments. Turning off compiler
801  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"  # optimization makes it run faster.
802    DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
803  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
804    
805    # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
806    # specified, the relevant library is available.
807    
808    if test "$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 "$HAVE_LIBBZ2" != "1"; then
827        echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
828        exit 1
829      fi
830      LIBBZ2="-lbz2"
831    fi
832    AC_SUBST(LIBBZ2)
833    
834    # Similarly for --enable-pcretest-readline
835    
836    if test "$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    
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 "$HAVE_HISTORY_H" != "1"; then
859        echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
860        exit 1
861      fi
862      if test -z "$LIBREADLINE"; then
863        echo "** Cannot --enable-pcretest-readline because readline library was not found."
864        exit 1
865      fi
866    fi
867    
868  # Produce these files, in addition to config.h.  # Produce these files, in addition to config.h.
869  AC_CONFIG_FILES(  AC_CONFIG_FILES(
870          Makefile          Makefile
871          libpcre.pc          libpcre.pc
872            libpcre16.pc
873            libpcreposix.pc
874          libpcrecpp.pc          libpcrecpp.pc
875          pcre-config          pcre-config
876          pcre.h          pcre.h
# Line 451  AC_OUTPUT Line 889  AC_OUTPUT
889    
890  # Print out a nice little message after configure is run displaying your  # Print out a nice little message after configure is run displaying your
891  # chosen options.  # chosen options.
892  #  
893  cat <<EOF  cat <<EOF
894    
895  $PACKAGE-$VERSION configuration summary:  $PACKAGE-$VERSION configuration summary:
896    
897      Install prefix ......... : ${prefix}      Install prefix .................. : ${prefix}
898      C preprocessor ......... : ${CPP}      C preprocessor .................. : ${CPP}
899      C compiler ............. : ${CC}      C compiler ...................... : ${CC}
900      C++ preprocessor ....... : ${CXXCPP}      C++ preprocessor ................ : ${CXXCPP}
901      C++ compiler ........... : ${CXX}      C++ compiler .................... : ${CXX}
902      Linker ................. : ${LD}      Linker .......................... : ${LD}
903      C preprocessor flags ... : ${CPPFLAGS}      C preprocessor flags ............ : ${CPPFLAGS}
904      C compiler flags ....... : ${CFLAGS}      C compiler flags ................ : ${CFLAGS}
905      C++ compiler flags ..... : ${CXXFLAGS}      C++ compiler flags .............. : ${CXXFLAGS}
906      Linker flags ........... : ${LDFLAGS}      Linker flags .................... : ${LDFLAGS}
907      Extra libraries ........ : ${LIBS}      Extra libraries ................. : ${LIBS}
908    
909      Build C++ library ...... : ${enable_cpp}      Build 8 bit pcre library ........ : ${enable_pcre8}
910      Enable UTF-8 support ... : ${enable_utf8}      Build 16 bit pcre library ....... : ${enable_pcre16}
911      Unicode properties ..... : ${enable_unicode_properties}      Build C++ library ............... : ${enable_cpp}
912      Newline char/sequence .. : ${enable_newline}      Enable JIT compiling support .... : ${enable_jit}
913      EBCDIC coding .......... : ${enable_ebcdic}      Enable UTF-8/16 support ......... : ${enable_utf}
914      Rebuild char tables .... : ${enable_rebuild_chartables}      Unicode properties .............. : ${enable_unicode_properties}
915      Use stack recursion .... : ${enable_stack_for_recursion}      Newline char/sequence ........... : ${enable_newline}
916      POSIX mem threshold .... : ${with_posix_malloc_threshold}      \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
917      Internal link size ..... : ${with_link_size}      EBCDIC coding ................... : ${enable_ebcdic}
918      Match limit ............ : ${with_match_limit}      Rebuild char tables ............. : ${enable_rebuild_chartables}
919      Match limit recursion .. : ${with_match_limit_recursion}      Use stack recursion ............. : ${enable_stack_for_recursion}
920      Build shared libs ...... : ${enable_shared}      POSIX mem threshold ............. : ${with_posix_malloc_threshold}
921      Build static libs ...... : ${enable_static}      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}
930        Link pcretest with libedit ...... : ${enable_pcretest_libedit}
931        Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
932    
933  EOF  EOF
934    

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