/[pcre]/code/trunk/configure.ac
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revision 464 by ph10, Sun Oct 18 19:50:34 2009 UTC revision 738 by ph10, Fri Oct 21 09:04:01 2011 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    dnl be defined as -RC2, for example. For real releases, it should be empty.
10    
11  m4_define(pcre_major, [8])  m4_define(pcre_major, [8])
12  m4_define(pcre_minor, [00])  m4_define(pcre_minor, [20])
13  m4_define(pcre_prerelease, [])  m4_define(pcre_prerelease, [])
14  m4_define(pcre_date, [2009-10-19])  m4_define(pcre_date, [2011-10-21])
15    
16  # Libtool shared library interface versions (current:revision:age)  # Libtool shared library interface versions (current:revision:age)
17  m4_define(libpcre_version, [0:1:0])  m4_define(libpcre_version, [0:1:0])
# Line 22  AC_CONFIG_SRCDIR([pcre.h.in]) Line 24  AC_CONFIG_SRCDIR([pcre.h.in])
24  AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])  AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
25  AC_CONFIG_HEADERS(config.h)  AC_CONFIG_HEADERS(config.h)
26    
27    # This was added at the suggestion of libtoolize (03-Jan-10)
28    AC_CONFIG_MACRO_DIR([m4])
29    
30  # 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
31  # "-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
32  # 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 63  fi Line 68  fi
68  # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.  # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
69  # Check for that case, and just disable c++ code if g++ doesn't run.  # Check for that case, and just disable c++ code if g++ doesn't run.
70  AC_LANG_PUSH(C++)  AC_LANG_PUSH(C++)
71  AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],, CXX=""; CXXCP=""; CXXFLAGS="")
72  AC_LANG_POP  AC_LANG_POP
73    
74    # Check for a 64-bit integer type
75    AC_TYPE_INT64_T
76    
77  AC_PROG_INSTALL  AC_PROG_INSTALL
78  AC_LIBTOOL_WIN32_DLL  AC_LIBTOOL_WIN32_DLL
79  AC_PROG_LIBTOOL  LT_INIT
80  AC_PROG_LN_S  AC_PROG_LN_S
81    
82  PCRE_MAJOR="pcre_major"  PCRE_MAJOR="pcre_major"
# Line 76  PCRE_MINOR="pcre_minor" Line 84  PCRE_MINOR="pcre_minor"
84  PCRE_PRERELEASE="pcre_prerelease"  PCRE_PRERELEASE="pcre_prerelease"
85  PCRE_DATE="pcre_date"  PCRE_DATE="pcre_date"
86    
87    if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09"
88    then
89      echo "***"
90      echo "*** Minor version number $PCRE_MINOR must not be used. ***"
91      echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
92      echo "***"
93      exit 1
94    fi
95    
96  AC_SUBST(PCRE_MAJOR)  AC_SUBST(PCRE_MAJOR)
97  AC_SUBST(PCRE_MINOR)  AC_SUBST(PCRE_MINOR)
98  AC_SUBST(PCRE_PRERELEASE)  AC_SUBST(PCRE_PRERELEASE)
# Line 87  then Line 104  then
104    htmldir='${docdir}/html'    htmldir='${docdir}/html'
105  fi  fi
106    
107  # Handle --disable-cpp  # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
108    # pcre-config.
109  AC_ARG_ENABLE(cpp,  AC_ARG_ENABLE(cpp,
110                AS_HELP_STRING([--disable-cpp],                AS_HELP_STRING([--disable-cpp],
111                               [disable C++ support]),                               [disable C++ support]),
112                , enable_cpp=yes)                , enable_cpp=yes)
113    AC_SUBST(enable_cpp)
114    
115    # Handle --enable-jit (disabled by default)
116    AC_ARG_ENABLE(jit,
117                  AS_HELP_STRING([--enable-jit],
118                                 [enable Just-In-Time compiling support]),
119                  , enable_jit=no)
120    
121    # Handle --disable-pcregrep-jit (enabled by default)
122    AC_ARG_ENABLE(pcregrep-jit,
123                  AS_HELP_STRING([--disable-pcregrep-jit],
124                                 [disable JIT support in pcregrep]),
125                  , enable_pcregrep_jit=yes)
126    
127  # Handle --enable-rebuild-chartables  # Handle --enable-rebuild-chartables
128  AC_ARG_ENABLE(rebuild-chartables,  AC_ARG_ENABLE(rebuild-chartables,
# Line 171  AC_ARG_ENABLE(pcregrep-libbz2, Line 202  AC_ARG_ENABLE(pcregrep-libbz2,
202                               [link pcregrep with libbz2 to handle .bz2 files]),                               [link pcregrep with libbz2 to handle .bz2 files]),
203                , enable_pcregrep_libbz2=no)                , enable_pcregrep_libbz2=no)
204    
205    # Handle --with-pcregrep-bufsize=N
206    AC_ARG_WITH(pcregrep-bufsize,
207                  AS_HELP_STRING([--with-pcregrep-bufsize=N],
208                                 [pcregrep buffer size (default=20480)]),
209                  , with_pcregrep_bufsize=20480)
210    
211  # Handle --enable-pcretest-libreadline  # Handle --enable-pcretest-libreadline
212  AC_ARG_ENABLE(pcretest-libreadline,  AC_ARG_ENABLE(pcretest-libreadline,
213                AS_HELP_STRING([--enable-pcretest-libreadline],                AS_HELP_STRING([--enable-pcretest-libreadline],
# Line 301  for flag in "-alias,__ZN7pcrecpp2RE6no_a Line 338  for flag in "-alias,__ZN7pcrecpp2RE6no_a
338    LDFLAGS="$OLD_LDFLAGS -Wl,$flag"    LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
339    # We try to run the linker with this new ld flag.  If the link fails,    # We try to run the linker with this new ld flag.  If the link fails,
340    # we give up and remove the new flag from LDFLAGS.    # we give up and remove the new flag from LDFLAGS.
341    AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {    AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
342                                      class RE { static int no_arg; };                                      class RE { static int no_arg; };
343                                      int RE::no_arg;                                      int RE::no_arg;
344                                    }],                                    }],
345                                   []),                                   [])],
346                   [AC_MSG_RESULT([yes]);                   [AC_MSG_RESULT([yes]);
347                    EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";                    EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
348                    break;],                    break;],
# Line 323  AC_CHECK_HEADERS(bits/type_traits.h, [pc Line 360  AC_CHECK_HEADERS(bits/type_traits.h, [pc
360  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
361                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
362    
363    # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
364    # in a c++ context.  This matters becuase strtoimax is C99 and may not
365    # be supported by the C++ compiler.)
366    # Figure out how to create a longlong from a string: strtoll and
367    # equiv.  It's not enough to call AC_CHECK_FUNCS: hpux has a
368    # strtoll, for instance, but it only takes 2 args instead of 3!
369    # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
370    AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
371    AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
372    AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
373    AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
374    have_strto_fn=0
375    for fn in strtoq strtoll _strtoi64 strtoimax; do
376      AC_MSG_CHECKING([for $fn])
377      if test "$fn" = strtoimax; then
378        include=stdint.h
379      else
380        include=stdlib.h
381      fi
382      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
383                                        [char* e; return $fn("100", &e, 10)])],
384                        [AC_MSG_RESULT(yes)
385                         AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
386                                            [Define to 1 if you have `$fn'.])
387                         have_strto_fn=1
388                         break],
389                        [AC_MSG_RESULT(no)])
390    done
391    
392    if test "$have_strto_fn" = 1; then
393      AC_CHECK_TYPES([long long],
394                     [pcre_have_long_long="1"],
395                     [pcre_have_long_long="0"])
396      AC_CHECK_TYPES([unsigned long long],
397                     [pcre_have_ulong_long="1"],
398                     [pcre_have_ulong_long="0"])
399    else
400      pcre_have_long_long="0"
401      pcre_have_ulong_long="0"
402    fi
403    AC_SUBST(pcre_have_long_long)
404    AC_SUBST(pcre_have_ulong_long)
405    
406  AC_LANG_POP  AC_LANG_POP
407  fi  fi
408  # Using AC_SUBST eliminates the need to include config.h in a public .h file  # Using AC_SUBST eliminates the need to include config.h in a public .h file
# Line 332  AC_SUBST(pcre_have_bits_type_traits) Line 412  AC_SUBST(pcre_have_bits_type_traits)
412  # Conditional compilation  # Conditional compilation
413  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
414  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
415    AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
416    AM_CONDITIONAL(WITH_UTF8, test "x$enable_utf8" = "xyes")
417    
418  # Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
419    
420  AC_C_CONST  AC_C_CONST
421  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
422    
 pcre_have_strotolonglong=0  
 AC_CHECK_FUNCS(strtoq strtoll _strtoi64, [pcre_have_strotolonglong="1"; break])  
 # If we can't convert a string to a long long, pretend we don't even  
 # have a long long.  
 if test $pcre_have_strotolonglong = "0"; then  
    pcre_have_long_long="0"  
    pcre_have_ulong_long="0"  
 else  
   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"])  
 fi  
 AC_SUBST(pcre_have_long_long)  
 AC_SUBST(pcre_have_ulong_long)  
   
423  # Checks for library functions.  # Checks for library functions.
424    
425  AC_CHECK_FUNCS(bcopy memmove strerror)  AC_CHECK_FUNCS(bcopy memmove strerror)
# Line 365  AC_CHECK_FUNCS(bcopy memmove strerror) Line 429  AC_CHECK_FUNCS(bcopy memmove strerror)
429  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
430  AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])  AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
431    
432  # Check for the availability of libbz2  # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
433    # as for libz. However, this had the following problem, diagnosed and fixed by
434    # a user:
435    #
436    #   - libbz2 uses the Pascal calling convention (WINAPI) for the functions
437    #     under Win32.
438    #   - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
439    #     therefore missing the function definition.
440    #   - The compiler thus generates a "C" signature for the test function.
441    #   - The linker fails to find the "C" function.
442    #   - PCRE fails to configure if asked to do so against libbz2.
443    #
444    # Solution:
445    #
446    #   - Replace the AC_CHECK_LIB test with a custom test.
447    
448  AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])  AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
449  AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])  # Original test
450    # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
451    #
452    # Custom test follows
453    
454    AC_MSG_CHECKING([for libbz2])
455    OLD_LIBS="$LIBS"
456    LIBS="$LIBS -lbz2"
457    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
458    #ifdef HAVE_BZLIB_H
459    #include <bzlib.h>
460    #endif]],
461    [[return (int)BZ2_bzopen("conftest", "rb");]])],
462    [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
463    AC_MSG_RESULT([no]))
464    LIBS="$OLD_LIBS"
465    
466  # Check for the availabiity of libreadline  # Check for the availabiity of libreadline
467    
# Line 389  AC_SUBST(PCRE_STATIC_CFLAG) Line 482  AC_SUBST(PCRE_STATIC_CFLAG)
482    
483  # Here is where pcre specific defines are handled  # Here is where pcre specific defines are handled
484    
485    if test "$enable_jit" = "yes"; then
486      AC_DEFINE([SUPPORT_JIT], [], [
487        Define to enable support for Just-In-Time compiling.])
488    else
489      enable_pcregrep_jit="no"
490    fi
491    
492    if test "$enable_pcregrep_jit" = "yes"; then
493      AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
494        Define to enable JIT support in pcregrep.])
495    fi
496    
497  if test "$enable_utf8" = "yes"; then  if test "$enable_utf8" = "yes"; then
498    AC_DEFINE([SUPPORT_UTF8], [], [    AC_DEFINE([SUPPORT_UTF8], [], [
499      Define to enable support for the UTF-8 Unicode encoding. This will      Define to enable support for the UTF-8 Unicode encoding. This will
# Line 399  fi Line 504  fi
504    
505  if test "$enable_unicode_properties" = "yes"; then  if test "$enable_unicode_properties" = "yes"; then
506    AC_DEFINE([SUPPORT_UCP], [], [    AC_DEFINE([SUPPORT_UCP], [], [
507      Define to enable support for Unicode properties])      Define to enable support for Unicode properties.])
508  fi  fi
509    
510  if test "$enable_stack_for_recursion" = "no"; then  if test "$enable_stack_for_recursion" = "no"; then
# Line 427  if test "$enable_pcregrep_libbz2" = "yes Line 532  if test "$enable_pcregrep_libbz2" = "yes
532      able to handle .bz2 files.])      able to handle .bz2 files.])
533  fi  fi
534    
535    if test $with_pcregrep_bufsize -lt 8192 ; then
536      with_pcregrep_bufsize="8192"
537    fi
538    
539    AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
540      The value of PCREGREP_BUFSIZE determines the size of buffer used by
541      pcregrep to hold parts of the file it is searching. On systems that
542      support it, "configure" can be used to override the default, which is
543      8192. This is also the minimum value. The actual amount of memory used by
544      pcregrep is three times this number, because it allows for the buffering of
545      "before" and "after" lines.])
546    
547  if test "$enable_pcretest_libreadline" = "yes"; then  if test "$enable_pcretest_libreadline" = "yes"; then
548    AC_DEFINE([SUPPORT_LIBREADLINE], [], [    AC_DEFINE([SUPPORT_LIBREADLINE], [], [
549      Define to allow pcretest to be linked with libreadline.])      Define to allow pcretest to be linked with libreadline.])
# Line 552  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS) Line 669  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
669  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
670    
671  # When we run 'make distcheck', use these arguments.  # When we run 'make distcheck', use these arguments.
672  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"  DISTCHECK_CONFIGURE_FLAGS="--enable-jit --enable-cpp --enable-unicode-properties"
673  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
674    
675  # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is  # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
# Line 640  $PACKAGE-$VERSION configuration summary: Line 757  $PACKAGE-$VERSION configuration summary:
757      Extra libraries ................. : ${LIBS}      Extra libraries ................. : ${LIBS}
758    
759      Build C++ library ............... : ${enable_cpp}      Build C++ library ............... : ${enable_cpp}
760        Enable JIT compiling support .... : ${enable_jit}
761      Enable UTF-8 support ............ : ${enable_utf8}      Enable UTF-8 support ............ : ${enable_utf8}
762      Unicode properties .............. : ${enable_unicode_properties}      Unicode properties .............. : ${enable_unicode_properties}
763      Newline char/sequence ........... : ${enable_newline}      Newline char/sequence ........... : ${enable_newline}
# Line 653  $PACKAGE-$VERSION configuration summary: Line 771  $PACKAGE-$VERSION configuration summary:
771      Match limit recursion ........... : ${with_match_limit_recursion}      Match limit recursion ........... : ${with_match_limit_recursion}
772      Build shared libs ............... : ${enable_shared}      Build shared libs ............... : ${enable_shared}
773      Build static libs ............... : ${enable_static}      Build static libs ............... : ${enable_static}
774        Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
775        Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
776      Link pcregrep with libz ......... : ${enable_pcregrep_libz}      Link pcregrep with libz ......... : ${enable_pcregrep_libz}
777      Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}      Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
778      Link pcretest with libreadline .. : ${enable_pcretest_libreadline}      Link pcretest with libreadline .. : ${enable_pcretest_libreadline}

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