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-rw-r--r--Makefile.rules2
1 files changed, 2 insertions, 0 deletions
diff --git a/Makefile.rules b/Makefile.rules
index 9414f634ad..0c8469a313 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -633,6 +633,8 @@ CompileCommonOpts += -pedantic -Wno-long-long
endif
CompileCommonOpts += -Wall -W -Wno-unused-parameter -Wwrite-strings \
$(EXTRA_OPTIONS)
+# Enable cast-qual for C++; the workaround is to use const_cast.
+CXX.Flags += -Wcast-qual
ifeq ($(HOST_OS),HP-UX)
CompileCommonOpts := -D_REENTRANT -D_HPUX_SOURCE