Annotation of embedaddon/expat/configure.in, revision 1.1.1.1

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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