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-rw-r--r--converter/other/pnmtops.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/converter/other/pnmtops.c b/converter/other/pnmtops.c
index c1dadc3e..c827f549 100644
--- a/converter/other/pnmtops.c
+++ b/converter/other/pnmtops.c
@@ -33,6 +33,7 @@
    goes in separate from the rest of the raster.
 */
 
+#define _DEFAULT_SOURCE /* New name for SVID & BSD source defines */
 #define _BSD_SOURCE  /* Make sure string.h contains strdup() */
 #define _XOPEN_SOURCE 500  /* Make sure strdup() is in string.h */
 #include <stdlib.h>