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-rw-r--r--src/geodesic.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/geodesic.c b/src/geodesic.c
index eb956c65..5cb273ac 100644
--- a/src/geodesic.c
+++ b/src/geodesic.c
@@ -24,7 +24,11 @@
*/
#include "geodesic.h"
+#ifdef PJ_LIB__
+#include "proj_math.h"
+#else
#include <math.h>
+#endif
#if !defined(HAVE_C99_MATH)
#define HAVE_C99_MATH 0