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-rw-r--r--Library/Formula/gmp.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/Library/Formula/gmp.rb b/Library/Formula/gmp.rb
index 9061aa3ee..1e093561d 100644
--- a/Library/Formula/gmp.rb
+++ b/Library/Formula/gmp.rb
@@ -21,6 +21,7 @@ class Gmp < Formula
args = ["--prefix=#{prefix}", "--enable-cxx"]
# Build 32-bit where appropriate, and help configure find 64-bit CPUs
+ # see: http://gmplib.org/macos.html
if MacOS.prefer_64_bit? and not ARGV.include? "--32-bit"
ENV.m64
args << "--build=x86_64-apple-darwin"