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require 'formula'
require 'brew.h'
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
# bundle.
safe_system "/usr/bin/xar -xf #{@tarball_path}"
chdir
# Clean up.
safe_system "mv *.pkg/Payload Payload.gz"
safe_system "ls | grep -v Payload | xargs rm -r"
end
end
class Gfortran <Formula
if MACOS_VERSION < 10.6
# Leopard
url 'http://r.research.att.com/gfortran-42-5577.pkg'
md5 '30fb495c93cf514003cdfcb7846dc701'
version "4.2.4-5577"
else
# Snow Leopard
case gcc_42_build
when 5659
url 'http://r.research.att.com/gfortran-42-5659.pkg'
md5 '71bd546baa45c9c0fb4943cdd72ee274'
version "4.2.4-5659"
else
url 'http://r.research.att.com/gfortran-42-5664.pkg'
md5 'eb64ba9f8507da22e582814a69fbb7ca'
version "4.2.4-5664"
end
end
homepage 'http://r.research.att.com/tools/'
def download_strategy
GfortranPkgDownloadStrategy
end
# Shouldn't strip compiler binaries.
skip_clean [ 'bin', 'lib', 'libexec' ]
def install
# The version of pax jumped 16 years in development between OS X 10.5
# and OS X 10.6. In that time it became security concious. Additionally,
# there are some slight variations in the packaging- because of this
# installation is broken down by XCode version.
case gcc_42_build
when 5577
ohai "Installing gfortran 4.2.4 for XCode 3.1.4 (build 5577)"
safe_system "pax -rz -f Payload.gz -s ',./usr,#{prefix},'"
# The 5577 package does not contain the gfortran->gfortran-4.2 symlink
safe_system "ln -sf #{bin}/gfortran-4.2 #{bin}/gfortran"
safe_system "ln -sf #{man1}/gfortran-4.2.1 #{man1}/gfortran.1"
when 5659
ohai "Installing gfortran 4.2.4 for XCode 3.2.2 (build 5659)"
safe_system "pax --insecure -rz -f Payload.gz -s ',./usr,#{prefix},'"
safe_system "ln -sf #{man1}/gfortran-4.2.1 #{man1}/gfortran.1"
when 5664
ohai "Installing gfortran 4.2.4 for XCode 3.2.3 (build 5664)"
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 XCode 3.1.4 on OS X 10.5.x and XCode 3.2.2/3.2.3 on OS X 10.6.x
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
end
end
def caveats
caveats = <<-EOS
Fortran compiler support in brews is currently experimental. One of the
consequences of this is that Homebrew does not set environment flags to ensure
that a particular Fortran compiler is used and that the resulting code is
optimized properly. Therefore, in addition to using:
depends_on "gfortran"
Fortran-based brews should also specify environment variables for the Fortran
compiler in the install section:
# Select the Fortran compiler to be used:
ENV["FC"] = ENV["F77"] = "\#{HOMEBREW_PREFIX}/bin/gfortran"
# Set Fortran optimization flags:
ENV["FFLAGS"] = ENV["FCFLAGS"] = ENV["CFLAGS"]
Following these guidelines will allow Fortran-based brews to be easily edited so
that alternate Fortran compilers, such as ifort, can be used instead of the
version of gfortran provided by Homebrew.
EOS
end
end
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