configure.in (enable_coverage): New enable switch.

[gcc.git] / gcc / configure.in

diff --git a/gcc/configure.in b/gcc/configure.in
index 84cd3628b691dac7f4a38fb21604b37dc95c0c65..6b7d2f256f80bbe75fa2ffd4812affb298295353 100644 (file)
--- a/gcc/configure.in
+++ b/gcc/configure.in
@@ -254,6 +254,28 @@ if test x$ac_gc_always_collect != x ; then
    every opportunity.  This is extremely expensive.])
 fi
 
+# Enable code coverage collection
+AC_ARG_ENABLE(coverage,
+[  --enable-coverage[=LEVEL]
+                         enable compiler\'s code coverage collection.
+                         Use to measure compiler performance and locate
+                         unused parts of the compiler. With LEVEL, specificy
+                         optimization. Values are opt, noopt,
+                         default is noopt],
+[case "${enableval}" in
+yes|noopt)
+       coverage_flags="-fprofile-arcs -ftest-coverage -O0"
+       ;;
+opt)
+       coverage_flags="-fprofile-arcs -ftest-coverage -O2"
+       ;;
+*)
+       AC_MSG_ERROR(unknown coverage setting $enableval)
+       ;;
+esac],
+[coverage_flags="-O2"])
+AC_SUBST(coverage_flags)
+
 AC_ARG_WITH(cpp_install_dir,
 [  --with-cpp-install-dir=DIR
                           install the user visible C preprocessor in DIR