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-rw-r--r--Makefile.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.in b/Makefile.in
index 8425174..6824ae3 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -19,7 +19,7 @@ EXTENSIONS := @JIM_EXTENSIONS@
# Set an initial, default library and auto_path
CPPFLAGS += -DTCL_LIBRARY=\"/lib/jim\"
-CPPFLAGS += -DJIM_TCL_COMPAT -DJIM_REFERENCES
+CPPFLAGS += -DJIM_TCL_COMPAT -DJIM_REFERENCES -D_GNU_SOURCE
CPPFLAGS += -Wall -g $(OPTIM) -I@SRCDIR@ -I. @EXTRA_CFLAGS@
VPATH := @SRCDIR@