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-rw-r--r--libbacktrace/mmapio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libbacktrace/mmapio.c b/libbacktrace/mmapio.c
index 5dd39525ba1..69cd8065a49 100644
--- a/libbacktrace/mmapio.c
+++ b/libbacktrace/mmapio.c
@@ -40,6 +40,10 @@ POSSIBILITY OF SUCH DAMAGE. */
#include "backtrace.h"
#include "internal.h"
+#ifndef HAVE_DECL_GETPAGESIZE
+extern int getpagesize (void);
+#endif
+
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif