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-rw-r--r--stdio-common/Makefile5
1 files changed, 5 insertions, 0 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 7fe1987158..4b9ec71338 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -33,6 +33,11 @@ routines	:=							      \
 	tmpfile tmpnam tempnam tempname					      \
 	getline getw putw						      \
 	remove rename
+
+ifneq (,$(filter %REENTRANT, $(defines)))
+routines += lockfile
+endif
+
 aux	:= errlist siglist
 distribute := _itoa.h printf-parse.h