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-rw-r--r--gcc/Makefile.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 658fce34e2c..798426d11be 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -88,7 +88,7 @@ coverageexts = .{da,bb,bbg}
# apply to the back end and the C front end, which may be compiled
# with other compilers. This is partially controlled by configure in
# stage1, as not all versions of gcc understand -Wno-long-long.
-LOOSE_WARN = -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
+LOOSE_WARN = -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -fno-common
STRICT_WARN = -Wtraditional @strict1_warn@
STRICT2_WARN = -Wtraditional -pedantic -Wno-long-long
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