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-rw-r--r--icu/makefile.mk2
1 files changed, 2 insertions, 0 deletions
diff --git a/icu/makefile.mk b/icu/makefile.mk
index bfb40c289eac..01695cce18ea 100644
--- a/icu/makefile.mk
+++ b/icu/makefile.mk
@@ -73,6 +73,8 @@ PATCH_FILES+=\
.IF "$(HAVE_GCC_BUILTIN_ATOMIC)"=="TRUE"
EXTRA_CDEFS+=-DU_HAVE_GCC_ATOMICS=1
+.ELSE
+EXTRA_CDEFS+=-DU_HAVE_GCC_ATOMICS=0
.ENDIF
.IF "$(GUI)"=="UNX"