CMSCOPE changed

1 files changed, 73 insertions, 0 deletions

diff --git a/m4/compiler.m4 b/m4/compiler.m4
new file mode 100755
index 000000000..bf7de57c9
--- /dev/null
+++ b/m4/compiler.m4
@@ -0,0 +1,73 @@
+dnl
+dnl Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+dnl Copyright (C) S/E - 2013/2013 - Sylvestre Ledru
+dnl Copyright (C) Scilab Enterprises - 2014 - Clement DAVID
+dnl
+dnl This file must be used under the terms of the CeCILL.
+dnl This source file is licensed as described in the file COPYING, which
+dnl you should have received as part of this distribution.  The terms
+dnl are also available at
+dnl http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
+
+dnl CHECK_COMPILER_ARG(LANG, ARG, ACTION-IF-NOT_FOUND)
+AC_DEFUN([CHECK_COMPILER_ARG],[
+    AC_LANG_PUSH([$1])
+    AC_MSG_CHECKING([if the $1 compiler accepts $2])
+    ac_save_$3="$$3"
+    $3="$$3 $$2"
+
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+       [AC_MSG_RESULT([yes])
+       $4="$2"
+       ],
+       [AC_MSG_RESULT([no])]
+    )
+    $3="$ac_save_$3";
+    AC_LANG_POP([$1])
+
+])
+
+
+AC_DEFUN([AC_CHECK_STDCPP_STATIC],[
+
+AC_ARG_ENABLE(static-system-lib,
+    AC_HELP_STRING([--disable-static-system-lib],[Disable the usage of the static stdc++ and libgcc libs]))
+
+# Check if -static-libstdc++ and -static-libgcc are supported.
+saved_LDFLAGS="$LDFLAGS"
+
+compiler_manage_static_libs=no
+USE_STATIC_SYSTEM_LIB=yes
+
+
+if test "x$enable_static_system_lib" == "xno"; then
+# The user ask for an explicit disable.
+   USE_STATIC_SYSTEM_LIB=no
+fi
+
+
+LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
+AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
+AC_LANG_PUSH(C++)
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+#if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
+#error -static-libstdc++ not implemented
+#endif
+int main() {return 0;}])],
+  [AC_MSG_RESULT([yes]); compiler_manage_static_libs=yes],
+  [AC_MSG_RESULT([no])])
+AC_LANG_POP(C++)
+
+LDFLAGS="$saved_LDFLAGS"
+if test "x$compiler_manage_static_libs" == "xno" -a "x$enable_static_system_lib" != "xno"; then
+   AC_MSG_ERROR([The $CC compiler does not support the options -static-libstdc++/-static-libgcc. Update your compiler or use the option --disable-static-system-lib])
+fi
+
+if test "x$compiler_manage_static_libs" == "xno"; then
+   echo "-static-libstdc++ -static-libgcc unsupported by the compiler. Skipped"
+   USE_STATIC_SYSTEM_LIB=no
+fi
+
+AM_CONDITIONAL(USE_STATIC_SYSTEM_LIB, test "$USE_STATIC_SYSTEM_LIB" == yes)
+
+])