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-rw-r--r--lib/libpm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/libpm.c b/lib/libpm.c
index 54bd04cb..55869f7f 100644
--- a/lib/libpm.c
+++ b/lib/libpm.c
@@ -8,6 +8,7 @@
   Netpbm library subroutines.
 **************************************************************************/
 
+#define _BSD_SOURCE          /* Make sure strdup is in string.h */
 #define _XOPEN_SOURCE 500    /* Make sure ftello, fseeko are defined */
 
 #include "netpbm/pm_config.h"