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-rw-r--r--libstdc++/config/linux.mt3
1 files changed, 2 insertions, 1 deletions
diff --git a/libstdc++/config/linux.mt b/libstdc++/config/linux.mt
index 6afe1e5..5848851 100644
--- a/libstdc++/config/linux.mt
+++ b/libstdc++/config/linux.mt
@@ -1 +1,2 @@
-MT_CFLAGS = -D_PTHREADS
+# tell we want the mt-safe version
+MT_CFLAGS = -D_IO_MTSAFE_IO