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-rw-r--r--converter/pbm/pbmtopk.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/converter/pbm/pbmtopk.c b/converter/pbm/pbmtopk.c
index 3948ae0d..2f05d449 100644
--- a/converter/pbm/pbmtopk.c
+++ b/converter/pbm/pbmtopk.c
@@ -9,6 +9,7 @@
   https://www.tug.org/TUGboat/tb06-1/tb11gf.pdf
 */
 
+#define _DEFAULT_SOURCE 1  /* New name for SVID & BSD source defines */
 #define _BSD_SOURCE 1      /* Make sure strdup() is in string.h */
 #define _XOPEN_SOURCE 500  /* Make sure strdup() is in string.h */