Enable -Werror by default

1 files changed, 16 insertions, 0 deletions

diff --git a/gas/configure.in b/gas/configure.in
index 8bf36797ca..580e7d0ef2 100644
--- a/gas/configure.in
+++ b/gas/configure.in
@@ -49,6 +49,22 @@ esac])dnl
 using_cgen=no
 
 build_warnings="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+
+AC_ARG_ENABLE(error-on-warning,
+  [  --enable-error-on-warning    treat compile warnings as errors],
+  [case "${enableval}" in
+     yes | y) ERROR_ON_WARNING="yes" ;;
+     no | n)  ERROR_ON_WARNING="no" ;;
+     *) AC_MSG_ERROR(bad value ${enableval} for --enable-error-on-warning) ;;
+   esac])
+
+# Enable -Werror by default, suppressing it only for --disable-error-on-warning
+# or --disable-build-warnings.
+if test "${ERROR_ON_WARNING}" != no
+then
+  build_warnings="$build_warnings -Werror"
+fi
+		   
 AC_ARG_ENABLE(build-warnings,
 [  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
 [case "${enableval}" in