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-rw-r--r--timezone/Makefile4
1 files changed, 2 insertions, 2 deletions
diff --git a/timezone/Makefile b/timezone/Makefile
index d6cc7ba357..e321a6bff4 100644
--- a/timezone/Makefile
+++ b/timezone/Makefile
@@ -65,8 +65,8 @@ tz-cflags = -DTZDIR='"$(zonedir)"' \
 # The -Wno-unused-variable flag is used to prevent GCC 6
 # from warning about time_t_min and time_t_max which are
 # defined in private.h but not used.
-CFLAGS-zdump.c = $(tz-cflags)
-CFLAGS-zic.c = $(tz-cflags) -Wno-unused-variable
+CFLAGS-zdump.c += $(tz-cflags)
+CFLAGS-zic.c += $(tz-cflags) -Wno-unused-variable
 
 # We have to make sure the data for testing the tz functions is available.
 # Don't add leapseconds here since test-tz made checks that work only without