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revision 172 by ph10, Tue Jun 5 10:40:13 2007 UTC revision 1019 by ph10, Mon Aug 27 13:15:02 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, [2])  
11  m4_define(pcre_prerelease, [-RC2])  m4_define(pcre_major, [8])
12  m4_define(pcre_date, [2007-06-05])  m4_define(pcre_minor, [32])
13    m4_define(pcre_prerelease, [-RC1])
14    m4_define(pcre_date, [2012-08-08])
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, [1:1:0])
21  m4_define(libpcreposix_version, [0:0:0])  m4_define(libpcre16_version, [0:1:0])
22    m4_define(libpcreposix_version, [0:1:0])
23  m4_define(libpcrecpp_version, [0:0:0])  m4_define(libpcrecpp_version, [0:0:0])
24    
25  AC_PREREQ(2.57)  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 (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 to any value 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 any value to enable the 8 bit PCRE library.])
599    fi
600    
601    if test "$enable_pcre16" = "yes"; then
602      AC_DEFINE([SUPPORT_PCRE16], [], [
603        Define to any value to enable the 16 bit PCRE library.])
604    fi
605    
606    if test "$enable_jit" = "yes"; then
607      AX_PTHREAD([], [AC_MSG_ERROR([JIT support requires pthreads])])
608      CC="$PTHREAD_CC"
609      CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
610      LIBS="$PTHREAD_LIBS $LIBS"
611      AC_DEFINE([SUPPORT_JIT], [], [
612        Define to any value to enable support for Just-In-Time compiling.])
613    else
614      enable_pcregrep_jit="no"
615    fi
616    
617    if test "$enable_pcregrep_jit" = "yes"; then
618      AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
619        Define to any value to enable JIT support in pcregrep.])
620    fi
621    
622    if test "$enable_utf" = "yes"; then
623      AC_DEFINE([SUPPORT_UTF], [], [
624        Define to any value to enable support for the UTF-8/16 Unicode encoding.
625        This will work even in an EBCDIC environment, but it is incompatible
626        with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
627        code *or* ASCII/UTF-8/16, but not both at once.])
628  fi  fi
629    
630  if test "$enable_unicode_properties" = "yes"; then  if test "$enable_unicode_properties" = "yes"; then
631    AC_DEFINE([SUPPORT_UCP], [], [    AC_DEFINE([SUPPORT_UCP], [], [
632      Define to enable support for Unicode properties])      Define to any value to enable support for Unicode properties.])
633  fi  fi
634    
635  if test "$enable_stack_for_recursion" = "no"; then  if test "$enable_stack_for_recursion" = "no"; then
636    AC_DEFINE([NO_RECURSE], [], [    AC_DEFINE([NO_RECURSE], [], [
637      PCRE uses recursive function calls to handle backtracking while      PCRE uses recursive function calls to handle backtracking while
638      matching. This can sometimes be a problem on systems that have      matching. This can sometimes be a problem on systems that have
639      stacks of limited size. Define NO_RECURSE to get a version that      stacks of limited size. Define NO_RECURSE to any value to get a
640      doesn't use recursion in the match() function; instead it creates      version that doesn't use recursion in the match() function; instead
641      its own stack by steam using pcre_recurse_malloc() to obtain memory      it creates its own stack by steam using pcre_recurse_malloc() to obtain
642      from the heap. For more detail, see the comments and other stuff      memory from the heap. For more detail, see the comments and other stuff
643      just above the match() function. On systems that support it,      just above the match() function. On systems that support it, "configure"
644      "configure" can be used to set this in the Makefile      can be used to set this in the Makefile (use
645      (use --disable-stack-for-recursion).])      --disable-stack-for-recursion).])
646    fi
647    
648    if test "$enable_pcregrep_libz" = "yes"; then
649      AC_DEFINE([SUPPORT_LIBZ], [], [
650        Define to any value to allow pcregrep to be linked with libz, so that it is
651        able to handle .gz files.])
652    fi
653    
654    if test "$enable_pcregrep_libbz2" = "yes"; then
655      AC_DEFINE([SUPPORT_LIBBZ2], [], [
656        Define to any value to allow pcregrep to be linked with libbz2, so that it
657        is able to handle .bz2 files.])
658    fi
659    
660    if test $with_pcregrep_bufsize -lt 8192 ; then
661      with_pcregrep_bufsize="8192"
662    fi
663    
664    AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
665      The value of PCREGREP_BUFSIZE determines the size of buffer used by
666      pcregrep to hold parts of the file it is searching. On systems that
667      support it, "configure" can be used to override the default, which is
668      20K. This is also the minimum value. The actual amount of memory used by
669      pcregrep is three times this number, because it allows for the buffering of
670      "before" and "after" lines.])
671    
672    if test "$enable_pcretest_libedit" = "yes"; then
673      AC_DEFINE([SUPPORT_LIBEDIT], [], [
674        Define to any value to allow pcretest to be linked with libedit.])
675      LIBREADLINE="$LIBEDIT"
676    elif test "$enable_pcretest_libreadline" = "yes"; then
677      AC_DEFINE([SUPPORT_LIBREADLINE], [], [
678        Define to any value to allow pcretest to be linked with libreadline.])
679  fi  fi
680    
681  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
682    The value of NEWLINE determines the newline character sequence. On    The value of NEWLINE determines the newline character sequence. On
683    Unix-like systems, "configure" can be used to override the default,    systems that support it, "configure" can be used to override the
684    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),    default, which is 10. The possible values are 10 (LF), 13 (CR),
685    -1 (ANY), or -2 (ANYCRLF).])    3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
686    
687    if test "$enable_bsr_anycrlf" = "yes"; then
688      AC_DEFINE([BSR_ANYCRLF], [], [
689        By default, the \R escape sequence matches any Unicode line ending
690        character or sequence of characters. If BSR_ANYCRLF is defined (to any
691        value), this is changed so that backslash-R matches only CR, LF, or CRLF.
692        The build-time default can be overridden by the user of PCRE at runtime.
693        On systems that support it, "configure" can be used to override the
694        default.])
695    fi
696    
697  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
698    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 745  AC_DEFINE([MAX_NAME_COUNT], [10000], [
745    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
746    against integer overflow caused by enormously large patterns.])    against integer overflow caused by enormously large patterns.])
747    
 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.])  
   
748  AH_VERBATIM([PCRE_EXP_DEFN], [  AH_VERBATIM([PCRE_EXP_DEFN], [
749  /* 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
750     Win32, and it needs some magic to be inserted before the definition     Win32, and it needs some magic to be inserted before the definition
751     of a function that is exported by the library, define this macro to     of a function that is exported by the library, define this macro to
752     contain the relevant magic. If you do not define this macro, it     contain the relevant magic. If you do not define this macro, a suitable
753     defaults to "extern" for a C compiler and "extern C" for a C++      __declspec value is used for Windows systems; in other environments
754     compiler on non-Win32 systems. This macro apears at the start of     "extern" is used for a C compiler and "extern C" for a C++ compiler.
755     every exported function that is part of the external API. It does     This macro apears at the start of every exported function that is part
756     not appear on functions that are "external" in the C sense, but     of the external API. It does not appear on functions that are "external"
757     which are internal to the library. */     in the C sense, but which are internal to the library. */
758  #undef PCRE_EXP_DEFN])  #undef PCRE_EXP_DEFN])
759    
760  if test "$enable_ebcdic" = "yes"; then  if test "$enable_ebcdic" = "yes"; then
761    AC_DEFINE_UNQUOTED([EBCDIC], [], [    AC_DEFINE_UNQUOTED([EBCDIC], [], [
762      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
763      character codes, define this macro as 1. On systems that can use      character codes, define this macro to any value. On systems that can
764      "configure", this can be done via --enable-ebcdic.])      use "configure", this can be done via --enable-ebcdic. PCRE will then
765        assume that all input strings are in EBCDIC. If you do not define
766        this macro, PCRE will assume input strings are ASCII or UTF-8/16
767        Unicode. It is not possible to build a version of PCRE that
768        supports both EBCDIC and UTF-8/16.])
769  fi  fi
770    
771  # Platform specific issues  # Platform specific issues
# Line 415  esac Line 783  esac
783  # The extra LDFLAGS for each particular library  # The extra LDFLAGS for each particular library
784  # (Note: The libpcre*_version bits are m4 variables, assigned above)  # (Note: The libpcre*_version bits are m4 variables, assigned above)
785    
786  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
787                           $NO_UNDEFINED -version-info libpcre_version"
788    
789    EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \
790                           $NO_UNDEFINED -version-info libpcre16_version"
791    
792  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
793                                $NO_UNDEFINED -version-info libpcreposix_version"
794    
795  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
796                              $NO_UNDEFINED -version-info libpcrecpp_version \
797                              $EXPORT_ALL_SYMBOLS"
798    
799  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
800    AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS)
801  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
802  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
803    
804  # When we run 'make distcheck', use these arguments.  # When we run 'make distcheck', use these arguments. Turning off compiler
805  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"  # optimization makes it run faster.
806    DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
807  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
808    
809    # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
810    # specified, the relevant library is available.
811    
812    if test "$enable_pcregrep_libz" = "yes"; then
813      if test "$HAVE_ZLIB_H" != "1"; then
814        echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
815        exit 1
816      fi
817      if test "$HAVE_LIBZ" != "1"; then
818        echo "** Cannot --enable-pcregrep-libz because libz was not found"
819        exit 1
820      fi
821      LIBZ="-lz"
822    fi
823    AC_SUBST(LIBZ)
824    
825    if test "$enable_pcregrep_libbz2" = "yes"; then
826      if test "$HAVE_BZLIB_H" != "1"; then
827        echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
828        exit 1
829      fi
830      if test "$HAVE_LIBBZ2" != "1"; then
831        echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
832        exit 1
833      fi
834      LIBBZ2="-lbz2"
835    fi
836    AC_SUBST(LIBBZ2)
837    
838    # Similarly for --enable-pcretest-readline
839    
840    if test "$enable_pcretest_libedit" = "yes"; then
841      if test "$enable_pcretest_libreadline" = "yes"; then
842        echo "** Cannot use both --enable-pcretest-libedit and --enable-pcretest-readline"
843        exit 1
844      fi
845      if test "$HAVE_EDITLINE_READLINE_H" != "1" -a \
846              "$HAVE_READLINE_READLINE_H" != "1"; then
847        echo "** Cannot --enable-pcretest-libedit because neither editline/readline.h"
848        echo "** nor readline/readline.h was found."
849        exit 1
850      fi
851      if test -z "$LIBEDIT"; then
852        echo "** Cannot --enable-pcretest-libedit because libedit library was not found."
853        exit 1
854      fi
855    fi
856    
857    if test "$enable_pcretest_libreadline" = "yes"; then
858      if test "$HAVE_READLINE_H" != "1"; then
859        echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
860        exit 1
861      fi
862      if test "$HAVE_HISTORY_H" != "1"; then
863        echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
864        exit 1
865      fi
866      if test -z "$LIBREADLINE"; then
867        echo "** Cannot --enable-pcretest-readline because readline library was not found."
868        exit 1
869      fi
870    fi
871    
872  # Produce these files, in addition to config.h.  # Produce these files, in addition to config.h.
873  AC_CONFIG_FILES(  AC_CONFIG_FILES(
874          Makefile          Makefile
875          libpcre.pc          libpcre.pc
876            libpcre16.pc
877            libpcreposix.pc
878          libpcrecpp.pc          libpcrecpp.pc
879          pcre-config          pcre-config
880          pcre.h          pcre.h
# Line 451  AC_OUTPUT Line 893  AC_OUTPUT
893    
894  # Print out a nice little message after configure is run displaying your  # Print out a nice little message after configure is run displaying your
895  # chosen options.  # chosen options.
896  #  
897  cat <<EOF  cat <<EOF
898    
899  $PACKAGE-$VERSION configuration summary:  $PACKAGE-$VERSION configuration summary:
900    
901      Install prefix ......... : ${prefix}      Install prefix .................. : ${prefix}
902      C preprocessor ......... : ${CPP}      C preprocessor .................. : ${CPP}
903      C compiler ............. : ${CC}      C compiler ...................... : ${CC}
904      C++ preprocessor ....... : ${CXXCPP}      C++ preprocessor ................ : ${CXXCPP}
905      C++ compiler ........... : ${CXX}      C++ compiler .................... : ${CXX}
906      Linker ................. : ${LD}      Linker .......................... : ${LD}
907      C preprocessor flags ... : ${CPPFLAGS}      C preprocessor flags ............ : ${CPPFLAGS}
908      C compiler flags ....... : ${CFLAGS}      C compiler flags ................ : ${CFLAGS}
909      C++ compiler flags ..... : ${CXXFLAGS}      C++ compiler flags .............. : ${CXXFLAGS}
910      Linker flags ........... : ${LDFLAGS}      Linker flags .................... : ${LDFLAGS}
911      Extra libraries ........ : ${LIBS}      Extra libraries ................. : ${LIBS}
912    
913      Build C++ library ...... : ${enable_cpp}      Build 8 bit pcre library ........ : ${enable_pcre8}
914      Enable UTF-8 support ... : ${enable_utf8}      Build 16 bit pcre library ....... : ${enable_pcre16}
915      Unicode properties ..... : ${enable_unicode_properties}      Build C++ library ............... : ${enable_cpp}
916      Newline char/sequence .. : ${enable_newline}      Enable JIT compiling support .... : ${enable_jit}
917      EBCDIC coding .......... : ${enable_ebcdic}      Enable UTF-8/16 support ......... : ${enable_utf}
918      Rebuild char tables .... : ${enable_rebuild_chartables}      Unicode properties .............. : ${enable_unicode_properties}
919      Use stack recursion .... : ${enable_stack_for_recursion}      Newline char/sequence ........... : ${enable_newline}
920      POSIX mem threshold .... : ${with_posix_malloc_threshold}      \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
921      Internal link size ..... : ${with_link_size}      EBCDIC coding ................... : ${enable_ebcdic}
922      Match limit ............ : ${with_match_limit}      Rebuild char tables ............. : ${enable_rebuild_chartables}
923      Match limit recursion .. : ${with_match_limit_recursion}      Use stack recursion ............. : ${enable_stack_for_recursion}
924      Build shared libs ...... : ${enable_shared}      POSIX mem threshold ............. : ${with_posix_malloc_threshold}
925      Build static libs ...... : ${enable_static}      Internal link size .............. : ${with_link_size}
926        Match limit ..................... : ${with_match_limit}
927        Match limit recursion ........... : ${with_match_limit_recursion}
928        Build shared libs ............... : ${enable_shared}
929        Build static libs ............... : ${enable_static}
930        Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
931        Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
932        Link pcregrep with libz ......... : ${enable_pcregrep_libz}
933        Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
934        Link pcretest with libedit ...... : ${enable_pcretest_libedit}
935        Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
936    
937  EOF  EOF
938    

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