GFortran: Update for XCode 4.2+

New builds of GFortran from r.research.att.com. The latest package installs all
of GCC, so we throw out all compilers other than GFortran after installation.

Fixes #8173.

1 files changed, 40 insertions, 18 deletions

diff --git a/Library/Formula/gfortran.rb b/Library/Formula/gfortran.rb
index 10d64d8c7..fe7c107a1 100644
--- a/Library/Formula/gfortran.rb
+++ b/Library/Formula/gfortran.rb
@@ -1,6 +1,6 @@
 require 'formula'
 
-class GfortranPkgDownloadStrategy <CurlDownloadStrategy
+class GfortranPkgDownloadStrategy < CurlDownloadStrategy
   def stage
     # The 4.2.4 compiler is distributed as a OS X 10.5
     # package- a single flat xar archive instead of a
@@ -34,11 +34,18 @@ class Gfortran < Formula
     end
   else
     # Lion
-
-    # Only version released so far is for XCode 4.1
-    url 'http://r.research.att.com/gfortran-lion-5666-3.pkg'
-    md5 '7eb140822c89bec17db5666859868b3b'
-    version "4.2.4-5666.3"
+    if MacOS.xcode_version >= '4.2'
+      # This version contains an entire Apple-GCC 4.2 (i386/x86_64) build for
+      # Lion. After installation, we will remove all compilers other than
+      # GFortran.
+      url 'http://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg'
+      md5 '3ccf46da27aaba17706b420711fb997e'
+      version '4.2.4-5666.3'
+    else
+      url 'http://r.research.att.com/gfortran-lion-5666-3.pkg'
+      md5 '7eb140822c89bec17db5666859868b3b'
+      version "4.2.4-5666.3"
+    end
   end
 
   homepage 'http://r.research.att.com/tools/'
@@ -48,7 +55,7 @@ class Gfortran < Formula
   end
 
   # Shouldn't strip compiler binaries.
-  skip_clean [ 'bin', 'lib', 'libexec' ]
+  skip_clean :all
 
   def install
     # The version of pax jumped 16 years in development between OS X 10.5
@@ -75,19 +82,34 @@ class Gfortran < Formula
       safe_system "pax --insecure -rz -f Payload.gz -s ',./usr,#{prefix},'"
       safe_system "ln -sf #{man1}/gfortran-4.2.1 #{man1}/gfortran.1"
     else
-      onoe <<-EOS.undent
-        Currently the gfortran compiler provided by this brew is only supported
-        for:
+      if MacOS.xcode_version >= '4.2'
+          ohai "Installing gfortran 4.2.4 for XCode 4.2 (build 5666)"
+          safe_system "pax --insecure -rz -f Payload.gz -s ',./usr,#{prefix},'"
 
-          - XCode 3.1.4 on OS X 10.5.x
-          - XCode 3.2.2/3.2.3 -- 4.0 on OS X 10.6.x
-          - XCode 4.1 on OS X 10.7.x
+          safe_system "ln -sf #{man1}/gfortran-4.2.1 #{man1}/gfortran.1"
+          # This package installs a whole GCC suite. Remove non-fortran
+          # components.
+          bin.children.reject{|p| p.basename.to_s.match /gfortran/}.each{|p| rm p}
+          man1.children.reject{|p| p.basename.to_s.match /gfortran/}.each{|p| rm p}
+          (include + 'gcc').rmtree
+          # This package does not contain the gfortran->gfortran-4.2 symlink
+          safe_system "ln -sf #{bin}/gfortran-4.2 #{bin}/gfortran"
+      else
+        onoe <<-EOS.undent
+            Currently the gfortran compiler provided by this brew is only supported
+            for:
 
-        The AppStore and Software Update can help upgrade your copy of XCode.
-        The latest version of XCode is also available from:
+              - XCode 3.1.4 on OS X 10.5.x
+              - XCode 3.2.2/3.2.3 -- 4.0 on OS X 10.6.x
+              - XCode 4.1/4.2 on OS X 10.7.x
 
-            http://developer.apple.com/technologies/xcode.html
-      EOS
+            The AppStore and Software Update can help upgrade your copy of XCode.
+            The latest version of XCode is also available from:
+
+                http://developer.apple.com/technologies/xcode.html
+        EOS
+        exit
+      end
     end
   end
 
@@ -102,6 +124,6 @@ class Gfortran < Formula
         ...
       end
 
-      EOS
+    EOS
   end
 end