Annotation of embedaddon/expat/configure.in, revision 1.1

1.1     ! misho       1: dnl   configuration script for expat
        !             2: dnl   Process this file with autoconf to produce a configure script.
        !             3: dnl
        !             4: dnl   Copyright 2000 Clark Cooper
        !             5: dnl
        !             6: dnl   This file is part of EXPAT.
        !             7: dnl
        !             8: dnl   EXPAT is free software; you can redistribute it and/or modify it
        !             9: dnl   under the terms of the License (based on the MIT/X license) contained
        !            10: dnl   in the file COPYING that comes with this distribution.
        !            11: dnl
        !            12: 
        !            13: dnl Ensure that Expat is configured with autoconf 2.52 or newer
        !            14: AC_PREREQ(2.52)
        !            15: 
        !            16: dnl Get the version number of Expat, using m4's esyscmd() command to run
        !            17: dnl the command at m4-generation time. This allows us to create an m4
        !            18: dnl symbol holding the correct version number. AC_INIT() requires the
        !            19: dnl version number at m4-time, rather than when ./configure is run, so
        !            20: dnl all this must happen as part of m4, not as part of the shell code
        !            21: dnl contained in ./configure.
        !            22: dnl
        !            23: dnl NOTE: esyscmd() is a GNU M4 extension. Thus, we wrap it in an appropriate
        !            24: dnl test. I believe this test will work, but I don't have a place with non-
        !            25: dnl GNU M4 to test it right now.
        !            26: define([expat_version], ifdef([__gnu__],
        !            27:                               [esyscmd(conftools/get-version.sh lib/expat.h)],
        !            28:                               [2.0.x]))
        !            29: AC_INIT(expat, expat_version, expat-bugs@libexpat.org)
        !            30: undefine([expat_version])
        !            31: 
        !            32: AC_CONFIG_SRCDIR(Makefile.in)
        !            33: AC_CONFIG_AUX_DIR(conftools)
        !            34: 
        !            35: 
        !            36: dnl
        !            37: dnl Increment LIBREVISION if source code has changed at all
        !            38: dnl
        !            39: dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
        !            40: dnl
        !            41: dnl If the API changes compatibly (i.e. simply adding a new function
        !            42: dnl without changing or removing earlier interfaces), then increment LIBAGE.
        !            43: dnl 
        !            44: dnl If the API changes incompatibly set LIBAGE back to 0
        !            45: dnl
        !            46: 
        !            47: LIBCURRENT=6
        !            48: LIBREVISION=2
        !            49: LIBAGE=5
        !            50: 
        !            51: AC_CONFIG_HEADER(expat_config.h)
        !            52: 
        !            53: sinclude(conftools/libtool.m4)
        !            54: sinclude(conftools/ac_c_bigendian_cross.m4)
        !            55: 
        !            56: AC_LIBTOOL_WIN32_DLL
        !            57: AC_PROG_LIBTOOL
        !            58: 
        !            59: AC_SUBST(LIBCURRENT)
        !            60: AC_SUBST(LIBREVISION)
        !            61: AC_SUBST(LIBAGE)
        !            62: 
        !            63: dnl Checks for programs.
        !            64: AC_PROG_CC
        !            65: AC_PROG_INSTALL
        !            66: 
        !            67: if test "$GCC" = yes ; then
        !            68:     dnl
        !            69:     dnl Be careful about adding the -fexceptions option; some versions of
        !            70:     dnl GCC don't support it and it causes extra warnings that are only
        !            71:     dnl distracting; avoid.
        !            72:     dnl
        !            73:     OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
        !            74:     CFLAGS="$OLDCFLAGS -fexceptions"
        !            75:     AC_MSG_CHECKING(whether $CC accepts -fexceptions)
        !            76:     AC_TRY_LINK( , ,
        !            77:                    AC_MSG_RESULT(yes),
        !            78:                    AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
        !            79:     CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
        !            80: fi
        !            81: 
        !            82: dnl Checks for header files.
        !            83: AC_HEADER_STDC
        !            84: 
        !            85: dnl Checks for typedefs, structures, and compiler characteristics.
        !            86: 
        !            87: dnl Note: Avoid using AC_C_BIGENDIAN because it does not
        !            88: dnl work in a cross compile.
        !            89: AC_C_BIGENDIAN_CROSS
        !            90: 
        !            91: AC_C_CONST
        !            92: AC_TYPE_SIZE_T
        !            93: AC_CHECK_FUNCS(memmove bcopy)
        !            94: 
        !            95: dnl Only needed for xmlwf:
        !            96: AC_CHECK_HEADERS(fcntl.h unistd.h)
        !            97: AC_TYPE_OFF_T
        !            98: AC_FUNC_MMAP
        !            99: 
        !           100: if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then
        !           101:     FILEMAP=unixfilemap
        !           102: else
        !           103:     FILEMAP=readfilemap
        !           104: fi
        !           105: AC_SUBST(FILEMAP)
        !           106: 
        !           107: dnl Needed for the test support code; this was found at
        !           108: dnl http://lists.gnu.org/archive/html/bug-autoconf/2002-07/msg00028.html
        !           109: 
        !           110: # AC_CPP_FUNC
        !           111: # ------------------ #
        !           112: # Checks to see if ANSI C99 CPP variable __func__ works.
        !           113: # If not, perhaps __FUNCTION__ works instead. 
        !           114: # If not, we'll just define __func__ to "". 
        !           115: AC_DEFUN([AC_CPP_FUNC],
        !           116: [AC_REQUIRE([AC_PROG_CC_STDC])dnl
        !           117: AC_CACHE_CHECK([for an ANSI C99-conforming __func__], ac_cv_cpp_func,
        !           118: [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
        !           119: [[char *foo = __func__;]])],
        !           120:   [ac_cv_cpp_func=yes], 
        !           121:   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
        !           122: [[char *foo = __FUNCTION__;]])],
        !           123:   [ac_cv_cpp_func=__FUNCTION__], 
        !           124:   [ac_cv_cpp_func=no])])])
        !           125: if test $ac_cv_cpp_func = __FUNCTION__; then
        !           126:   AC_DEFINE(__func__,__FUNCTION__,
        !           127:             [Define to __FUNCTION__ or "" if `__func__' does not conform to 
        !           128: ANSI C.])
        !           129: elif test $ac_cv_cpp_func = no; then
        !           130:   AC_DEFINE(__func__,"",
        !           131:             [Define to __FUNCTION__ or "" if `__func__' does not conform to 
        !           132: ANSI C.])
        !           133: fi
        !           134: ])# AC_CPP_FUNC
        !           135: 
        !           136: AC_CPP_FUNC
        !           137: 
        !           138: 
        !           139: dnl Some basic configuration:
        !           140: AC_DEFINE([XML_NS], 1,
        !           141:           [Define to make XML Namespaces functionality available.])
        !           142: AC_DEFINE([XML_DTD], 1,
        !           143:           [Define to make parameter entity parsing functionality available.])
        !           144: AC_DEFINE([XML_CONTEXT_BYTES], 1024,
        !           145:           [Define to specify how much context to retain around the current parse point.])
        !           146: 
        !           147: AC_CONFIG_FILES(Makefile)
        !           148: AC_OUTPUT
        !           149: 
        !           150: abs_srcdir="`cd $srcdir && pwd`"
        !           151: abs_builddir="`pwd`"
        !           152: if test "$abs_srcdir" != "$abs_builddir"; then
        !           153:   make mkdir-init
        !           154: fi

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