dnl Add a set of flags to WARNING_FLAGS, that enable compiler warnings for

dnl isl. The warnings that are enabled vary with the compiler and only include

dnl warnings that did not trigger at the time of adding these flags.

AC_DEFUN([AX_SET_WARNING_FLAGS],[dnl

	AX_COMPILER_VENDOR

	WARNING_FLAGS=""

	if test "${ax_cv_c_compiler_vendor}" = "clang"; then

		dnl isl is at the moment clean of -Wall warnings.  If clang adds

		dnl new warnings to -Wall which cause false positives, the

		dnl specific warning types will be disabled explicitally (by

		dnl adding for example -Wno-return-type). To temporarily disable

		dnl all warnings run configure with CFLAGS=-Wno-all.

		WARNING_FLAGS="-Wall"

	fi

])