+# GCC GRAPHITE dependences, ISL and CLOOG which in turn requires ISL.
+# Basic setup is inlined here, actual checks are in config/cloog.m4 and
+# config/isl.m4
+
+AC_ARG_WITH(cloog,
+ [AS_HELP_STRING(
+ [--with-cloog=PATH],
+ [Specify prefix directory for the installed CLooG-ISL package.
+ Equivalent to --with-cloog-include=PATH/include
+ plus --with-cloog-lib=PATH/lib])])
+AC_ARG_WITH(isl,
+ [AS_HELP_STRING(
+ [--with-isl=PATH],
+ [Specify prefix directory for the installed ISL package.
+ Equivalent to --with-isl-include=PATH/include
+ plus --with-isl-lib=PATH/lib])])
+
+# Treat either --without-cloog or --without-isl as a request to disable
+# GRAPHITE support and skip all following checks.
+if test "x$with_isl" != "xno" &&
+ test "x$with_cloog" != "xno"; then
+ # Check for ISL
+ dnl Provide configure switches and initialize islinc & isllibs
+ dnl with user input.
+ ISL_INIT_FLAGS