/[pcre]/code/branches/pcre16/configure.ac
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revision 418 by ph10, Fri Apr 24 09:17:18 2009 UTC revision 481 by ph10, Sun Jan 3 17:45:53 2010 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, [01])
13  m4_define(pcre_prerelease, [-RC1])  m4_define(pcre_prerelease, [-RC1])
14  m4_define(pcre_date, [2009-04-23])  m4_define(pcre_date, [2010-01-02])
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 66  AC_LANG_PUSH(C++) Line 71  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  AC_PROG_LIBTOOL
# 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 $PCRE_MINOR must not be used. ***"
91      echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
92      echo "***"
93      exit 1
94    fi
95    
96  AC_SUBST(PCRE_MAJOR)  AC_SUBST(PCRE_MAJOR)
97  AC_SUBST(PCRE_MINOR)  AC_SUBST(PCRE_MINOR)
98  AC_SUBST(PCRE_PRERELEASE)  AC_SUBST(PCRE_PRERELEASE)
# Line 365  AC_CHECK_FUNCS(bcopy memmove strerror) Line 382  AC_CHECK_FUNCS(bcopy memmove strerror)
382  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
383  AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])  AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
384    
385  # Check for the availability of libbz2  # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
386    # as for libz. However, this had the following problem, diagnosed and fixed by
387    # a user:
388    #
389    #   - libbz2 uses the Pascal calling convention (WINAPI) for the functions
390    #     under Win32.
391    #   - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
392    #     therefore missing the function definition.
393    #   - The compiler thus generates a "C" signature for the test function.
394    #   - The linker fails to find the "C" function.
395    #   - PCRE fails to configure if asked to do so against libbz2.
396    #
397    # Solution:
398    #
399    #   - Replace the AC_CHECK_LIB test with a custom test.
400    
401  AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])  AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
402  AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])  # Original test
403    # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
404    #
405    # Custom test follows
406    
407    AC_MSG_CHECKING([for libbz2])
408    OLD_LIBS="$LIBS"
409    LIBS="$LIBS -lbz2"
410    AC_LINK_IFELSE( AC_LANG_PROGRAM([[
411    #ifdef HAVE_BZLIB_H
412    #include <bzlib.h>
413    #endif]],
414    [[return (int)BZ2_bzopen("conftest", "rb");]]),
415    [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
416    AC_MSG_RESULT([no]))
417    LIBS="$OLD_LIBS"
418    
419  # Check for the availabiity of libreadline  # Check for the availabiity of libreadline
420    
# Line 379  AC_CHECK_LIB([readline], [readline], [HA Line 425  AC_CHECK_LIB([readline], [readline], [HA
425  # This facilitates -ansi builds under Linux  # This facilitates -ansi builds under Linux
426  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])  dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
427    
428    PCRE_STATIC_CFLAG=""
429  if test "x$enable_shared" = "xno" ; then  if test "x$enable_shared" = "xno" ; then
430    AC_DEFINE([PCRE_STATIC], [1], [    AC_DEFINE([PCRE_STATIC], [1], [
431      Define if linking statically (TODO: make nice with Libtool)])      Define if linking statically (TODO: make nice with Libtool)])
432      PCRE_STATIC_CFLAG="-DPCRE_STATIC"
433  fi  fi
434    AC_SUBST(PCRE_STATIC_CFLAG)
435    
436  # Here is where pcre specific defines are handled  # Here is where pcre specific defines are handled
437    
# Line 600  AC_SUBST(LIBREADLINE) Line 649  AC_SUBST(LIBREADLINE)
649  AC_CONFIG_FILES(  AC_CONFIG_FILES(
650          Makefile          Makefile
651          libpcre.pc          libpcre.pc
652            libpcreposix.pc
653          libpcrecpp.pc          libpcrecpp.pc
654          pcre-config          pcre-config
655          pcre.h          pcre.h
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