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Annotation of embedaddon/readline/examples/autoconf/RL_LIB_READLINE_VERSION, revision 1.1

1.1     ! misho       1: dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB
        !             2: dnl require:
        !             3: dnl    AC_PROG_CC
        !             4: dnl    BASH_CHECK_LIB_TERMCAP
        !             5: 
        !             6: AC_DEFUN([RL_LIB_READLINE_VERSION],
        !             7: [
        !             8: AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
        !             9: 
        !            10: AC_MSG_CHECKING([version of installed readline library])
        !            11: 
        !            12: # What a pain in the ass this is.
        !            13: 
        !            14: # save cpp and ld options
        !            15: _save_CFLAGS="$CFLAGS"
        !            16: _save_LDFLAGS="$LDFLAGS"
        !            17: _save_LIBS="$LIBS"
        !            18: 
        !            19: # Don't set ac_cv_rl_prefix if the caller has already assigned a value.  This
        !            20: # allows the caller to do something like $_rl_prefix=$withval if the user
        !            21: # specifies --with-installed-readline=PREFIX as an argument to configure
        !            22: 
        !            23: if test -z "$ac_cv_rl_prefix"; then
        !            24: test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
        !            25: fi
        !            26: 
        !            27: eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
        !            28: eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
        !            29: 
        !            30: LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
        !            31: CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
        !            32: LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
        !            33: 
        !            34: AC_CACHE_VAL(ac_cv_rl_version,
        !            35: [AC_TRY_RUN([
        !            36: #include <stdio.h>
        !            37: #include <readline/readline.h>
        !            38: 
        !            39: extern int rl_gnu_readline_p;
        !            40: 
        !            41: main()
        !            42: {
        !            43:        FILE *fp;
        !            44:        fp = fopen("conftest.rlv", "w");
        !            45:        if (fp == 0)
        !            46:                exit(1);
        !            47:        if (rl_gnu_readline_p != 1)
        !            48:                fprintf(fp, "0.0\n");
        !            49:        else
        !            50:                fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
        !            51:        fclose(fp);
        !            52:        exit(0);
        !            53: }
        !            54: ],
        !            55: ac_cv_rl_version=`cat conftest.rlv`,
        !            56: ac_cv_rl_version='0.0',
        !            57: ac_cv_rl_version='4.2')])
        !            58: 
        !            59: CFLAGS="$_save_CFLAGS"
        !            60: LDFLAGS="$_save_LDFLAGS"
        !            61: LIBS="$_save_LIBS"
        !            62: 
        !            63: RL_MAJOR=0
        !            64: RL_MINOR=0
        !            65: 
        !            66: # (
        !            67: case "$ac_cv_rl_version" in
        !            68: 2*|3*|4*|5*|6*|7*|8*|9*)
        !            69:        RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
        !            70:        RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
        !            71:        ;;
        !            72: esac
        !            73: 
        !            74: # (((
        !            75: case $RL_MAJOR in
        !            76: [[0-9][0-9]])  _RL_MAJOR=$RL_MAJOR ;;
        !            77: [[0-9]])       _RL_MAJOR=0$RL_MAJOR ;;
        !            78: *)             _RL_MAJOR=00 ;;
        !            79: esac
        !            80: 
        !            81: # (((
        !            82: case $RL_MINOR in
        !            83: [[0-9][0-9]])  _RL_MINOR=$RL_MINOR ;;
        !            84: [[0-9]])       _RL_MINOR=0$RL_MINOR ;;
        !            85: *)             _RL_MINOR=00 ;;
        !            86: esac
        !            87: 
        !            88: RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
        !            89: 
        !            90: # Readline versions greater than 4.2 have these defines in readline.h
        !            91: 
        !            92: if test $ac_cv_rl_version = '0.0' ; then
        !            93:        AC_MSG_WARN([Could not test version of installed readline library.])
        !            94: elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
        !            95:        # set these for use by the caller
        !            96:        RL_PREFIX=$ac_cv_rl_prefix
        !            97:        RL_LIBDIR=$ac_cv_rl_libdir
        !            98:        RL_INCLUDEDIR=$ac_cv_rl_includedir
        !            99:        AC_MSG_RESULT($ac_cv_rl_version)
        !           100: else
        !           101: 
        !           102: AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
        !           103: AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
        !           104: AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
        !           105: 
        !           106: AC_SUBST(RL_VERSION)
        !           107: AC_SUBST(RL_MAJOR)
        !           108: AC_SUBST(RL_MINOR)
        !           109: 
        !           110: # set these for use by the caller
        !           111: RL_PREFIX=$ac_cv_rl_prefix
        !           112: RL_LIBDIR=$ac_cv_rl_libdir
        !           113: RL_INCLUDEDIR=$ac_cv_rl_includedir
        !           114: 
        !           115: AC_MSG_RESULT($ac_cv_rl_version)
        !           116: 
        !           117: fi
        !           118: ])