+dnl OVS_CHECK_SPARSE_TARGET
+dnl
+dnl The "cgcc" script from "sparse" isn't very good at detecting the
+dnl target for which the code is being built. This helps it out.
+AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
+ [AC_CACHE_CHECK(
+ [target hint for cgcc],
+ [ac_cv_sparse_target],
+ [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
+ [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
+ [x86_64-*], [ac_cv_sparse_target=x86_64],
+ [ac_cv_sparse_target=other])])
+ AS_CASE([$ac_cv_sparse_target],
+ [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
+ [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
+ [SPARSEFLAGS= CGCCFLAGS=])
+ AC_SUBST([SPARSEFLAGS])
+ AC_SUBST([CGCCFLAGS])])
+