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dnl ===========================================================================
dnl Additional macros used to configure GiNaC. We don't start our own
dnl additions' names with AC_ but with GINAC_ in order to steer clear of
dnl future trouble.
dnl ===========================================================================
dnl Usage: GINAC_RLVERSION
dnl The maintainers of libreadline are complete morons: they don't care a shit
dnl about compatiblilty (which is not so bad by itself) and at the same time
dnl they don't export the version to the preprocessor so we could kluge around
dnl incomatiblities. The only reliable way to figure out the version is by
dnl checking the extern variable rl_library_version at runtime. &#@$%*!
AC_DEFUN(GINAC_LIB_READLINE_VERSION,
[AC_CACHE_CHECK([for version of libreadline], ginac_cv_rlversion, [
AC_TRY_RUN([
#include <stdio.h>
#include <sys/types.h>
#include <readline/readline.h>
main()
{
FILE *fd;
fd = fopen("conftest.out", "w");
fprintf(fd, "%s\n", rl_library_version);
fclose(fd);
return 0;
}], ginac_cv_rlversion=`cat 'conftest.out'`, ginac_cv_rlversion='unknown', ginac_cv_rlversion='4.2')])
if test "x${ginac_cv_rlversion}" != "xunknown"; then
RL_VERSION_MAJOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MAJOR, $RL_VERSION_MAJOR, [Major version of installed readline library.])
RL_VERSION_MINOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MINOR, $RL_VERSION_MINOR, [Minor version of installed readline library.])
else
GINAC_WARNING([I could not run a test of libreadline (needed for building ginsh).])
fi
])
dnl Usage: GINAC_TERMCAP
dnl libreadline is based on the termcap functions.
dnl Some systems have tgetent(), tgetnum(), tgetstr(), tgetflag(), tputs(),
dnl tgoto() in libc, some have it in libtermcap, some have it in libncurses.
dnl When both libtermcap and libncurses exist, we prefer the latter, because
dnl libtermcap is being phased out.
AC_DEFUN(GINAC_TERMCAP,
[LIBTERMCAP=
AC_CHECK_FUNCS(tgetent)
if test "x$ac_cv_func_tgetent" = "xyes"; then
:
else
AC_CHECK_LIB(ncurses, tgetent, LIBTERMCAP="-lncurses")
if test -z "$LIBTERMCAP"; then
AC_CHECK_LIB(termcap, tgetent, LIBTERMCAP="-ltermcap")
fi
fi
AC_SUBST(LIBTERMCAP)
])
dnl Usage: GINAC_ERROR(message)
dnl This macro displays the warning "message" and sets the flag ginac_error
dnl to yes.
AC_DEFUN(GINAC_ERROR,[
ginac_error_txt="$ginac_error_txt
** $1
"
ginac_error=yes])
dnl Usage: GINAC_WARNING(message)
dnl This macro displays the warning "message" and sets the flag ginac_warning
dnl to yes.
AC_DEFUN(GINAC_WARNING,[
ginac_warning_txt="$ginac_warning_txt
== $1
"
ginac_warning=yes])
dnl Usage: GINAC_CHECK_ERRORS
dnl (preferably to be put at end of configure.in)
dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING
dnl has occured previously.
AC_DEFUN(GINAC_CHECK_ERRORS,[
if test "x${ginac_error}" = "xyes"; then
echo "**** The following problems have been detected by configure."
echo "**** Please check the messages below before running \"make\"."
echo "**** (see the section 'Common Problems' in the INSTALL file)"
echo "$ginac_error_txt"
if test "x${ginac_warning_txt}" != "x"; then
echo "${ginac_warning_txt}"
fi
if test "x$cache_file" != "x/dev/null"; then
echo "deleting cache ${cache_file}"
rm -f $cache_file
fi
else
if test x$ginac_warning = xyes; then
echo "=== The following minor problems have been detected by configure."
echo "=== Please check the messages below before running \"make\"."
echo "=== (see the section 'Common Problems' in the INSTALL file)"
echo "$ginac_warning_txt"
fi
echo "Configuration of GiNaC $VERSION done. Now type \"make\"."
fi])
|
