--- /dev/null
+dnl $Id: ensc_cxxcompiler.m4,v 1.3 2005/04/10 00:52:57 ensc Exp $
+
+dnl Copyright (C) 2002 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; version 2 of the License.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+AC_DEFUN([ENSC_CXXCOMPILER],
+[
+ AC_REQUIRE([AC_PROG_CXX])
+
+ AC_CACHE_CHECK([whether $CXX is a C++ compiler], [ensc_cv_cxx_cxxcompiler],
+ [
+ AC_LANG_PUSH(C++)
+ AC_COMPILE_IFELSE([
+ #include <ostream>
+ ],
+ [ensc_cv_cxx_cxxcompiler=yes],
+ [ensc_cv_cxx_cxxcompiler=no])
+ AC_LANG_POP(C++)
+ ])
+
+ AM_CONDITIONAL(ENSC_HAVE_CXX_COMPILER,
+ [test x"$ensc_cv_cxx_cxxcompiler" = xyes])
+
+ if test x"$ensc_cv_cxx_cxxcompiler" = xno; then
+ AC_MSG_WARN([*** some programs will not be built because a C++ compiler is lacking])
+ fi
+])
+
+AC_DEFUN([ENSC_C99COMPILER],
+[
+ AC_REQUIRE([AC_PROG_CC])
+
+ AC_CACHE_CHECK([whether $CC is a C99 compiler], [ensc_cv_c99_c99compiler],
+ [
+ AC_LANG_PUSH(C)
+ AC_COMPILE_IFELSE([
+int main(int argc, char *argv[]) {
+ struct { int x; } a = { .x = argc };
+ if (0) return 0;
+ int b;
+}
+ ],
+ [ensc_cv_c99_c99compiler=yes],
+ [ensc_cv_c99_c99compiler=no])
+ AC_LANG_POP(C)
+ ])
+
+ AM_CONDITIONAL(ENSC_HAVE_C99_COMPILER,
+ [test x"$ensc_cv_c99_c99compiler" = xyes])
+
+ if test x"$ensc_cv_c99_c99compiler" = xno; then
+ AC_MSG_WARN([*** some programs will not be built because system is lacking a C99 compiler])
+ fi
+])