Doc: CG: clarify instructions for macports.

diff --git a/Documentation/contributor/basic-compile.itexi b/Documentation/contributor/basic-compile.itexi
index 98ac3043ef920bc8072519c48281ece54f8b7ab2..41f3e24d6e187ab06032452fa93ce71f264574b5 100644 (file)
--- a/Documentation/contributor/basic-compile.itexi
+++ b/Documentation/contributor/basic-compile.itexi
@@ -397,13 +397,20 @@ export LD_LIBRARY_PATH=/usr/lib
 exec /usr/bin/pngtopnm "$@"
 @end verbatim
 
-On MacOS X, I use this:
+On MacOS X with fink, I use this:
 
 @verbatim
 export DYLD_LIBRARY_PATH=/sw/lib
 exec /sw/bin/pngtopnm "$@"
 @end verbatim
 
+On MacOS X with macports, you should use this:
+
+@verbatim
+export DYLD_LIBRARY_PATH=/opt/local/lib
+exec /opt/local/bin/pngtopnm "$@"
+@end verbatim
+
 
 
 @node Testing LilyPond