119 lines
2.9 KiB
Text
119 lines
2.9 KiB
Text
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dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB
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dnl require:
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dnl AC_PROG_CC
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dnl BASH_CHECK_LIB_TERMCAP
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AC_DEFUN([RL_LIB_READLINE_VERSION],
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[
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AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
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AC_MSG_CHECKING([version of installed readline library])
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# What a pain in the ass this is.
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# save cpp and ld options
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_save_CFLAGS="$CFLAGS"
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_save_LDFLAGS="$LDFLAGS"
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_save_LIBS="$LIBS"
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# Don't set ac_cv_rl_prefix if the caller has already assigned a value. This
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# allows the caller to do something like $_rl_prefix=$withval if the user
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# specifies --with-installed-readline=PREFIX as an argument to configure
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if test -z "$ac_cv_rl_prefix"; then
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test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
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fi
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eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
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eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
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LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
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CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
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LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
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AC_CACHE_VAL(ac_cv_rl_version,
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[AC_TRY_RUN([
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#include <stdio.h>
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#include <readline/readline.h>
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extern int rl_gnu_readline_p;
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main()
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{
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FILE *fp;
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fp = fopen("conftest.rlv", "w");
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if (fp == 0)
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exit(1);
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if (rl_gnu_readline_p != 1)
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fprintf(fp, "0.0\n");
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else
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fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
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fclose(fp);
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exit(0);
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}
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],
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ac_cv_rl_version=`cat conftest.rlv`,
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ac_cv_rl_version='0.0',
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ac_cv_rl_version='4.2')])
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CFLAGS="$_save_CFLAGS"
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LDFLAGS="$_save_LDFLAGS"
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LIBS="$_save_LIBS"
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RL_MAJOR=0
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RL_MINOR=0
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# (
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case "$ac_cv_rl_version" in
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2*|3*|4*|5*|6*|7*|8*|9*)
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RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
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RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
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;;
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esac
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# (((
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case $RL_MAJOR in
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[[0-9][0-9]]) _RL_MAJOR=$RL_MAJOR ;;
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[[0-9]]) _RL_MAJOR=0$RL_MAJOR ;;
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*) _RL_MAJOR=00 ;;
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esac
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# (((
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case $RL_MINOR in
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[[0-9][0-9]]) _RL_MINOR=$RL_MINOR ;;
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[[0-9]]) _RL_MINOR=0$RL_MINOR ;;
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*) _RL_MINOR=00 ;;
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esac
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RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
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# Readline versions greater than 4.2 have these defines in readline.h
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if test $ac_cv_rl_version = '0.0' ; then
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AC_MSG_WARN([Could not test version of installed readline library.])
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elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
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# set these for use by the caller
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RL_PREFIX=$ac_cv_rl_prefix
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RL_LIBDIR=$ac_cv_rl_libdir
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RL_INCLUDEDIR=$ac_cv_rl_includedir
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AC_MSG_RESULT($ac_cv_rl_version)
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else
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AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
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AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
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AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
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AC_SUBST(RL_VERSION)
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AC_SUBST(RL_MAJOR)
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AC_SUBST(RL_MINOR)
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# set these for use by the caller
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RL_PREFIX=$ac_cv_rl_prefix
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RL_LIBDIR=$ac_cv_rl_libdir
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RL_INCLUDEDIR=$ac_cv_rl_includedir
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AC_MSG_RESULT($ac_cv_rl_version)
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fi
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])
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