/[pcre]/code/trunk/configure.ac
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revision 181 by ph10, Wed Jun 13 14:55:18 2007 UTC revision 909 by ph10, Sat Feb 4 15:01:47 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, [-RC3])  m4_define(pcre_major, [8])
12  m4_define(pcre_date, [2007-06-13])  m4_define(pcre_minor, [30])
13    m4_define(pcre_prerelease, [])
14    m4_define(pcre_date, [2012-02-04])
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 (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-libreadline
237    AC_ARG_ENABLE(pcretest-libreadline,
238                  AS_HELP_STRING([--enable-pcretest-libreadline],
239                                 [link pcretest with libreadline]),
240                  , enable_pcretest_libreadline=no)
241    
242  # Handle --with-posix-malloc-threshold=NBYTES  # Handle --with-posix-malloc-threshold=NBYTES
243  AC_ARG_WITH(posix-malloc-threshold,  AC_ARG_WITH(posix-malloc-threshold,
244              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 270  AC_ARG_WITH(match-limit-recursion,
270                             [default limit on internal recursion (default=MATCH_LIMIT)]),                             [default limit on internal recursion (default=MATCH_LIMIT)]),
271              , with_match_limit_recursion=MATCH_LIMIT)              , with_match_limit_recursion=MATCH_LIMIT)
272    
273  # Make sure that if enable_unicode_properties was set, that UTF-8 support  # Copy enable_utf8 value to enable_utf for compatibility reasons
274  # is enabled.  if test "x$enable_utf8" != "xunset"
275  #  then
276      if test "x$enable_utf" != "xunset"
277      then
278        AC_MSG_ERROR([--enable/disable-utf8 is kept only for compatibility reasons and its value is copied to --enable/disable-utf. Newer code must use --enable/disable-utf alone.])
279      fi
280      enable_utf=$enable_utf8
281    fi
282    
283    # Set the default value for pcre8
284    if test "x$enable_pcre8" = "xunset"
285    then
286      enable_pcre8=yes
287    fi
288    
289    # Set the default value for pcre16
290    if test "x$enable_pcre16" = "xunset"
291    then
292      enable_pcre16=no
293    fi
294    
295    # Make sure enable_pcre8 or enable_pcre16 was set
296    if test "x$enable_pcre8$enable_pcre16" = "xnono"
297    then
298      AC_MSG_ERROR([Either 8 or 16 bit (or both) pcre library must be enabled])
299    fi
300    
301    # Make sure that if enable_unicode_properties was set, that UTF support is enabled.
302  if test "x$enable_unicode_properties" = "xyes"  if test "x$enable_unicode_properties" = "xyes"
303  then  then
304    if test "x$enable_utf8" = "xno"    if test "x$enable_utf" = "xno"
305    then    then
306      AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])      AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support])
307    fi    fi
308    enable_utf8=yes    enable_utf=yes
309  fi  fi
310    
311  if test "x$enable_utf8" = "xunset"  # enable_utf is disabled by default.
312    if test "x$enable_utf" = "xunset"
313  then  then
314    enable_utf8=no    enable_utf=no
315    fi
316    
317    # enable_cpp copies the value of enable_pcre8 by default
318    if test "x$enable_cpp" = "xunset"
319    then
320      enable_cpp=$enable_pcre8
321    fi
322    
323    # Make sure that if enable_cpp was set, that enable_pcre8 support is enabled
324    if test "x$enable_cpp" = "xyes"
325    then
326      if test "x$enable_pcre8" = "xno"
327      then
328        AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters])
329      fi
330  fi  fi
331    
332  # 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.
333    # Also check that UTF support is not requested, because PCRE cannot handle
334    # EBCDIC and UTF in the same build. To do so it would need to use different
335    # character constants depending on the mode.
336  #  #
337  if test "x$enable_ebcdic" = "xyes"  if test "x$enable_ebcdic" = "xyes"
338  then  then
339    enable_rebuild_chartables=yes    enable_rebuild_chartables=yes
340      if test "x$enable_utf" = "xyes"
341      then
342        AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time])
343      fi
344  fi  fi
345    
346  # Convert the newline identifier into the appropriate integer value.  # Convert the newline identifier into the appropriate integer value.
# Line 231  it to run on SunOS4 and other "close to Line 371  it to run on SunOS4 and other "close to
371    
372  If you are going to build PCRE "by hand" on a system without "configure" you  If you are going to build PCRE "by hand" on a system without "configure" you
373  should copy the distributed config.h.generic to config.h, and then set up the  should copy the distributed config.h.generic to config.h, and then set up the
374  macros the way you need them. Alternatively, you can avoid editing by using -D  macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
375  on the compiler command line to set the macro values.  all of your compile commands, so that config.h is included at the start of
376    every source.
377    
378    Alternatively, you can avoid editing by using -D on the compiler command line
379    to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
380    
381  PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if  PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
382  HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set  HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
# Line 249  if test "x$enable_cpp" = "xyes" -a -n "$ Line 393  if test "x$enable_cpp" = "xyes" -a -n "$
393  then  then
394  AC_LANG_PUSH(C++)  AC_LANG_PUSH(C++)
395    
396    # Older versions of pcre defined pcrecpp::no_arg, but in new versions
397    # it's called pcrecpp::RE::no_arg.  For backwards ABI compatibility,
398    # we want to make one an alias for the other.  Different systems do
399    # this in different ways.  Some systems, for instance, can do it via
400    # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
401    OLD_LDFLAGS="$LDFLAGS"
402    for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
403                "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
404      AC_MSG_CHECKING([for alias support in the linker])
405      LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
406      # We try to run the linker with this new ld flag.  If the link fails,
407      # we give up and remove the new flag from LDFLAGS.
408      AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
409                                        class RE { static int no_arg; };
410                                        int RE::no_arg;
411                                      }],
412                                     [])],
413                     [AC_MSG_RESULT([yes]);
414                      EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
415                      break;],
416                     AC_MSG_RESULT([no]))
417    done
418    LDFLAGS="$OLD_LDFLAGS"
419    
420  # 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
421  # (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
422  # 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 426  AC_CHECK_HEADERS(bits/type_traits.h, [pc
426                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
427  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
428                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
429    
430    # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
431    # in a c++ context.  This matters becuase strtoimax is C99 and may not
432    # be supported by the C++ compiler.)
433    # Figure out how to create a longlong from a string: strtoll and
434    # equiv.  It's not enough to call AC_CHECK_FUNCS: hpux has a
435    # strtoll, for instance, but it only takes 2 args instead of 3!
436    # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
437    AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
438    AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
439    AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
440    AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
441    have_strto_fn=0
442    for fn in strtoq strtoll _strtoi64 strtoimax; do
443      AC_MSG_CHECKING([for $fn])
444      if test "$fn" = strtoimax; then
445        include=stdint.h
446      else
447        include=stdlib.h
448      fi
449      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
450                                        [char* e; return $fn("100", &e, 10)])],
451                        [AC_MSG_RESULT(yes)
452                         AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
453                                            [Define to 1 if you have `$fn'.])
454                         have_strto_fn=1
455                         break],
456                        [AC_MSG_RESULT(no)])
457    done
458    
459    if test "$have_strto_fn" = 1; then
460      AC_CHECK_TYPES([long long],
461                     [pcre_have_long_long="1"],
462                     [pcre_have_long_long="0"])
463      AC_CHECK_TYPES([unsigned long long],
464                     [pcre_have_ulong_long="1"],
465                     [pcre_have_ulong_long="0"])
466    else
467      pcre_have_long_long="0"
468      pcre_have_ulong_long="0"
469    fi
470    AC_SUBST(pcre_have_long_long)
471    AC_SUBST(pcre_have_ulong_long)
472    
473  AC_LANG_POP  AC_LANG_POP
474  fi  fi
475  # Using AC_SUBST eliminates the need to include config.h in a public .h file  # Using AC_SUBST eliminates the need to include config.h in a public .h file
# Line 265  AC_SUBST(pcre_have_type_traits) Line 477  AC_SUBST(pcre_have_type_traits)
477  AC_SUBST(pcre_have_bits_type_traits)  AC_SUBST(pcre_have_bits_type_traits)
478    
479  # Conditional compilation  # Conditional compilation
480    AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes")
481    AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
482  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
483  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
484    AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
485    AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
486    
487  # Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
488    
489  AC_C_CONST  AC_C_CONST
490  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
491    
 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)  
   
492  # Checks for library functions.  # Checks for library functions.
493    
494  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  AC_CHECK_FUNCS(bcopy memmove strerror)
495    
496    # Check for the availability of libz (aka zlib)
497    
498    AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
499    AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
500    
501    # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
502    # as for libz. However, this had the following problem, diagnosed and fixed by
503    # a user:
504    #
505    #   - libbz2 uses the Pascal calling convention (WINAPI) for the functions
506    #     under Win32.
507    #   - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
508    #     therefore missing the function definition.
509    #   - The compiler thus generates a "C" signature for the test function.
510    #   - The linker fails to find the "C" function.
511    #   - PCRE fails to configure if asked to do so against libbz2.
512    #
513    # Solution:
514    #
515    #   - Replace the AC_CHECK_LIB test with a custom test.
516    
517    AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
518    # Original test
519    # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
520    #
521    # Custom test follows
522    
523    AC_MSG_CHECKING([for libbz2])
524    OLD_LIBS="$LIBS"
525    LIBS="$LIBS -lbz2"
526    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
527    #ifdef HAVE_BZLIB_H
528    #include <bzlib.h>
529    #endif]],
530    [[return (int)BZ2_bzopen("conftest", "rb");]])],
531    [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
532    AC_MSG_RESULT([no]))
533    LIBS="$OLD_LIBS"
534    
535    # Check for the availabiity of libreadline
536    
537    AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
538    AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
539    AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lreadline"],
540      [unset ac_cv_lib_readline_readline;
541       AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltinfo"],
542        [unset ac_cv_lib_readline_readline;
543         AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lcurses"],
544          [unset ac_cv_lib_readline_readline;
545           AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncurses"],
546            [unset ac_cv_lib_readline_readline;
547             AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncursesw"],
548              [unset ac_cv_lib_readline_readline;
549               AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltermcap"],
550                [LIBREADLINE=""],
551                [-ltermcap])],
552              [-lncursesw])],
553            [-lncurses])],
554          [-lcurses])],
555        [-ltinfo])])
556    AC_SUBST(LIBREADLINE)
557    if test -n "$LIBREADLINE"; then
558      if test "$LIBREADLINE" != "-lreadline"; then
559        echo "-lreadline needs $LIBREADLINE"
560        LIBREADLINE="-lreadline $LIBREADLINE"
561      fi
562    fi
563    
564  # This facilitates -ansi builds under Linux  # This facilitates -ansi builds under Linux
565  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
566    
567    PCRE_STATIC_CFLAG=""
568  if test "x$enable_shared" = "xno" ; then  if test "x$enable_shared" = "xno" ; then
569    AC_DEFINE([PCRE_STATIC], [1], [    AC_DEFINE([PCRE_STATIC], [1], [
570      Define if linking statically (TODO: make nice with Libtool)])      Define if linking statically (TODO: make nice with Libtool)])
571      PCRE_STATIC_CFLAG="-DPCRE_STATIC"
572  fi  fi
573    AC_SUBST(PCRE_STATIC_CFLAG)
574    
575  # Here is where pcre specific defines are handled  # Here is where pcre specific defines are handled
576    
577  if test "$enable_utf8" = "yes"; then  if test "$enable_pcre8" = "yes"; then
578    AC_DEFINE([SUPPORT_UTF8], [], [    AC_DEFINE([SUPPORT_PCRE8], [], [
579      Define to enable support for the UTF-8 Unicode encoding.])      Define to enable the 8 bit PCRE library.])
580    fi
581    
582    if test "$enable_pcre16" = "yes"; then
583      AC_DEFINE([SUPPORT_PCRE16], [], [
584        Define to enable the 16 bit PCRE library.])
585    fi
586    
587    if test "$enable_jit" = "yes"; then
588      AC_DEFINE([SUPPORT_JIT], [], [
589        Define to enable support for Just-In-Time compiling.])
590    else
591      enable_pcregrep_jit="no"
592    fi
593    
594    if test "$enable_pcregrep_jit" = "yes"; then
595      AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
596        Define to enable JIT support in pcregrep.])
597    fi
598    
599    if test "$enable_utf" = "yes"; then
600      AC_DEFINE([SUPPORT_UTF], [], [
601        Define to enable support for the UTF-8/16 Unicode encoding. This
602        will work even in an EBCDIC environment, but it is incompatible
603        with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
604        code *or* ASCII/UTF-8/16, but not both at once.])
605  fi  fi
606    
607  if test "$enable_unicode_properties" = "yes"; then  if test "$enable_unicode_properties" = "yes"; then
608    AC_DEFINE([SUPPORT_UCP], [], [    AC_DEFINE([SUPPORT_UCP], [], [
609      Define to enable support for Unicode properties])      Define to enable support for Unicode properties.])
610  fi  fi
611    
612  if test "$enable_stack_for_recursion" = "no"; then  if test "$enable_stack_for_recursion" = "no"; then
# Line 319  if test "$enable_stack_for_recursion" = Line 622  if test "$enable_stack_for_recursion" =
622      (use --disable-stack-for-recursion).])      (use --disable-stack-for-recursion).])
623  fi  fi
624    
625    if test "$enable_pcregrep_libz" = "yes"; then
626      AC_DEFINE([SUPPORT_LIBZ], [], [
627        Define to allow pcregrep to be linked with libz, so that it is
628        able to handle .gz files.])
629    fi
630    
631    if test "$enable_pcregrep_libbz2" = "yes"; then
632      AC_DEFINE([SUPPORT_LIBBZ2], [], [
633        Define to allow pcregrep to be linked with libbz2, so that it is
634        able to handle .bz2 files.])
635    fi
636    
637    if test $with_pcregrep_bufsize -lt 8192 ; then
638      with_pcregrep_bufsize="8192"
639    fi
640    
641    AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
642      The value of PCREGREP_BUFSIZE determines the size of buffer used by
643      pcregrep to hold parts of the file it is searching. On systems that
644      support it, "configure" can be used to override the default, which is
645      8192. This is also the minimum value. The actual amount of memory used by
646      pcregrep is three times this number, because it allows for the buffering of
647      "before" and "after" lines.])
648    
649    if test "$enable_pcretest_libreadline" = "yes"; then
650      AC_DEFINE([SUPPORT_LIBREADLINE], [], [
651        Define to allow pcretest to be linked with libreadline.])
652    fi
653    
654  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
655    The value of NEWLINE determines the newline character sequence. On    The value of NEWLINE determines the newline character sequence. On
656    Unix-like systems, "configure" can be used to override the default,    systems that support it, "configure" can be used to override the
657    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),    default, which is 10. The possible values are 10 (LF), 13 (CR),
658    -1 (ANY), or -2 (ANYCRLF).])    3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
659    
660    if test "$enable_bsr_anycrlf" = "yes"; then
661      AC_DEFINE([BSR_ANYCRLF], [], [
662        By default, the \R escape sequence matches any Unicode line ending
663        character or sequence of characters. If BSR_ANYCRLF is defined, this is
664        changed so that backslash-R matches only CR, LF, or CRLF. The build-
665        time default can be overridden by the user of PCRE at runtime. On
666        systems that support it, "configure" can be used to override the
667        default.])
668    fi
669    
670  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
671    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 718  AC_DEFINE([MAX_NAME_COUNT], [10000], [
718    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
719    against integer overflow caused by enormously large patterns.])    against integer overflow caused by enormously large patterns.])
720    
 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.])  
   
721  AH_VERBATIM([PCRE_EXP_DEFN], [  AH_VERBATIM([PCRE_EXP_DEFN], [
722  /* 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
723     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 "$enable_ebcdic" = "yes"; then Line 734  if test "$enable_ebcdic" = "yes"; then
734    AC_DEFINE_UNQUOTED([EBCDIC], [], [    AC_DEFINE_UNQUOTED([EBCDIC], [], [
735      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
736      character codes, define this macro as 1. On systems that can use      character codes, define this macro as 1. On systems that can use
737      "configure", this can be done via --enable-ebcdic.])      "configure", this can be done via --enable-ebcdic. PCRE will then
738        assume that all input strings are in EBCDIC. If you do not define
739        this macro, PCRE will assume input strings are ASCII or UTF-8/16
740        Unicode. It is not possible to build a version of PCRE that
741        supports both EBCDIC and UTF-8/16.])
742  fi  fi
743    
744  # Platform specific issues  # Platform specific issues
# Line 415  esac Line 756  esac
756  # The extra LDFLAGS for each particular library  # The extra LDFLAGS for each particular library
757  # (Note: The libpcre*_version bits are m4 variables, assigned above)  # (Note: The libpcre*_version bits are m4 variables, assigned above)
758    
759  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
760                           $NO_UNDEFINED -version-info libpcre_version"
761    
762  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"  EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \
763                           $NO_UNDEFINED -version-info libpcre16_version"
764    
765  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
766                                $NO_UNDEFINED -version-info libpcreposix_version"
767    
768    EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
769                              $NO_UNDEFINED -version-info libpcrecpp_version \
770                              $EXPORT_ALL_SYMBOLS"
771    
772  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
773    AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS)
774  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
775  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
776    
777  # When we run 'make distcheck', use these arguments.  # When we run 'make distcheck', use these arguments. Turning off compiler
778  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"  # optimization makes it run faster.
779    DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
780  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
781    
782    # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
783    # specified, the relevant library is available.
784    
785    if test "$enable_pcregrep_libz" = "yes"; then
786      if test "$HAVE_ZLIB_H" != "1"; then
787        echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
788        exit 1
789      fi
790      if test "$HAVE_LIBZ" != "1"; then
791        echo "** Cannot --enable-pcregrep-libz because libz was not found"
792        exit 1
793      fi
794      LIBZ="-lz"
795    fi
796    AC_SUBST(LIBZ)
797    
798    if test "$enable_pcregrep_libbz2" = "yes"; then
799      if test "$HAVE_BZLIB_H" != "1"; then
800        echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
801        exit 1
802      fi
803      if test "$HAVE_LIBBZ2" != "1"; then
804        echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
805        exit 1
806      fi
807      LIBBZ2="-lbz2"
808    fi
809    AC_SUBST(LIBBZ2)
810    
811    # Similarly for --enable-pcretest-readline
812    
813    if test "$enable_pcretest_libreadline" = "yes"; then
814      if test "$HAVE_READLINE_H" != "1"; then
815        echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
816        exit 1
817      fi
818      if test "$HAVE_HISTORY_H" != "1"; then
819        echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
820        exit 1
821      fi
822      if test -z "$LIBREADLINE"; then
823        echo "** Cannot --enable-pcretest-readline because readline library was not found."
824        exit 1
825      fi
826    fi
827    
828  # Produce these files, in addition to config.h.  # Produce these files, in addition to config.h.
829  AC_CONFIG_FILES(  AC_CONFIG_FILES(
830          Makefile          Makefile
831          libpcre.pc          libpcre.pc
832            libpcre16.pc
833            libpcreposix.pc
834          libpcrecpp.pc          libpcrecpp.pc
835          pcre-config          pcre-config
836          pcre.h          pcre.h
# Line 451  AC_OUTPUT Line 849  AC_OUTPUT
849    
850  # Print out a nice little message after configure is run displaying your  # Print out a nice little message after configure is run displaying your
851  # chosen options.  # chosen options.
852  #  
853  cat <<EOF  cat <<EOF
854    
855  $PACKAGE-$VERSION configuration summary:  $PACKAGE-$VERSION configuration summary:
856    
857      Install prefix ......... : ${prefix}      Install prefix .................. : ${prefix}
858      C preprocessor ......... : ${CPP}      C preprocessor .................. : ${CPP}
859      C compiler ............. : ${CC}      C compiler ...................... : ${CC}
860      C++ preprocessor ....... : ${CXXCPP}      C++ preprocessor ................ : ${CXXCPP}
861      C++ compiler ........... : ${CXX}      C++ compiler .................... : ${CXX}
862      Linker ................. : ${LD}      Linker .......................... : ${LD}
863      C preprocessor flags ... : ${CPPFLAGS}      C preprocessor flags ............ : ${CPPFLAGS}
864      C compiler flags ....... : ${CFLAGS}      C compiler flags ................ : ${CFLAGS}
865      C++ compiler flags ..... : ${CXXFLAGS}      C++ compiler flags .............. : ${CXXFLAGS}
866      Linker flags ........... : ${LDFLAGS}      Linker flags .................... : ${LDFLAGS}
867      Extra libraries ........ : ${LIBS}      Extra libraries ................. : ${LIBS}
868    
869      Build C++ library ...... : ${enable_cpp}      Build 8 bit pcre library ........ : ${enable_pcre8}
870      Enable UTF-8 support ... : ${enable_utf8}      Build 16 bit pcre library ....... : ${enable_pcre16}
871      Unicode properties ..... : ${enable_unicode_properties}      Build C++ library ............... : ${enable_cpp}
872      Newline char/sequence .. : ${enable_newline}      Enable JIT compiling support .... : ${enable_jit}
873      EBCDIC coding .......... : ${enable_ebcdic}      Enable UTF-8/16 support ......... : ${enable_utf}
874      Rebuild char tables .... : ${enable_rebuild_chartables}      Unicode properties .............. : ${enable_unicode_properties}
875      Use stack recursion .... : ${enable_stack_for_recursion}      Newline char/sequence ........... : ${enable_newline}
876      POSIX mem threshold .... : ${with_posix_malloc_threshold}      \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
877      Internal link size ..... : ${with_link_size}      EBCDIC coding ................... : ${enable_ebcdic}
878      Match limit ............ : ${with_match_limit}      Rebuild char tables ............. : ${enable_rebuild_chartables}
879      Match limit recursion .. : ${with_match_limit_recursion}      Use stack recursion ............. : ${enable_stack_for_recursion}
880      Build shared libs ...... : ${enable_shared}      POSIX mem threshold ............. : ${with_posix_malloc_threshold}
881      Build static libs ...... : ${enable_static}      Internal link size .............. : ${with_link_size}
882        Match limit ..................... : ${with_match_limit}
883        Match limit recursion ........... : ${with_match_limit_recursion}
884        Build shared libs ............... : ${enable_shared}
885        Build static libs ............... : ${enable_static}
886        Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
887        Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
888        Link pcregrep with libz ......... : ${enable_pcregrep_libz}
889        Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
890        Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
891    
892  EOF  EOF
893    

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