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-rw-r--r--nptl/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/nptl/Makefile b/nptl/Makefile
index 77541b8874..00c63d87e6 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -157,6 +157,7 @@ CFLAGS-pt-initfini.s = -g0 -fPIC -fno-inline-functions
 endif
 
 CFLAGS-flockfile.c = -D_IO_MTSAFE_IO
+CFLAGS-ftrylockfile.c = -D_IO_MTSAFE_IO
 CFLAGS-funlockfile.c = -D_IO_MTSAFE_IO
 
 ifeq ($(build-static),yes)