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-rw-r--r--Library/Formula/libpng.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/Library/Formula/libpng.rb b/Library/Formula/libpng.rb
index be4acec65..b9dae2826 100644
--- a/Library/Formula/libpng.rb
+++ b/Library/Formula/libpng.rb
@@ -5,6 +5,10 @@ class Libpng <Formula
@homepage='http://www.libpng.org/pub/png/libpng.html'
@md5='a2f6808735bf404967f81519a967fb2a'
+ def keg_only?
+ :provided_by_osx
+ end
+
def install
system "./configure", "--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking"
system "make install"