X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ac4de069215bacaca1caec9c1d2bae476616e89b..c43430bbacbf26414693fcf47fe54a8090c6bfcb:/src/mgl/dc.cpp

diff --git a/src/mgl/dc.cpp b/src/mgl/dc.cpp
index 2c48b7f256..d462c90486 100644
--- a/src/mgl/dc.cpp
+++ b/src/mgl/dc.cpp
@@ -47,6 +47,10 @@
 // constants
 //-----------------------------------------------------------------------------
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 const double mm2inches      = 0.0393700787402;
 const double inches2mm      = 25.4;
 const double mm2twips       = 56.6929133859;