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require 'formula'
class Gfortran < Formula
homepage 'http://gcc.gnu.org/wiki/GFortran'
url 'http://ftpmirror.gnu.org/gcc/gcc-4.8.1/gcc-4.8.1.tar.bz2'
mirror 'http://ftp.gnu.org/gnu/gcc/gcc-4.8.1/gcc-4.8.1.tar.bz2'
sha1 '4e655032cda30e1928fcc3f00962f4238b502169'
bottle do
sha1 '74e1625cc759101a8823a249fa1469da98826756' => :mountain_lion
sha1 '759a7106878a8b54a9cdfdd99adcc78d34f99a10' => :lion
sha1 'f1ca217e4a3beaeee82593a1d63b34f4555aa7cd' => :snow_leopard
end
option 'enable-profiled-build', 'Make use of profile guided optimization when bootstrapping GCC'
option 'check', 'Run the make check fortran. This is for maintainers.'
option 'enable-multilib', 'Build with multilib support' if MacOS.prefer_64_bit?
depends_on 'gmp'
depends_on 'libmpc'
depends_on 'mpfr'
depends_on 'cloog'
depends_on 'isl'
# http://gcc.gnu.org/install/test.html
depends_on 'dejagnu' if build.include? 'check'
def install
# Sandbox the GCC lib, libexec and include directories so they don't wander
# around telling small children there is no Santa Claus. This results in a
# partially keg-only brew following suggestions outlined in the "How to
# install multiple versions of GCC" section of the GCC FAQ:
# http://gcc.gnu.org/faq.html#multiple
gfortran_prefix = prefix/'gfortran'
args = [
# Sandbox everything...
"--prefix=#{gfortran_prefix}",
# ...except the stuff in share...
"--datarootdir=#{share}",
# ...and the binaries...
"--bindir=#{bin}",
"--enable-languages=fortran",
"--with-system-zlib",
# ...opt_prefix survives upgrades and works even if `brew unlink gmp`
"--with-gmp=#{Formula.factory('gmp').opt_prefix}",
"--with-mpfr=#{Formula.factory('mpfr').opt_prefix}",
"--with-mpc=#{Formula.factory('libmpc').opt_prefix}",
"--with-cloog=#{Formula.factory('cloog').opt_prefix}",
"--with-isl=#{Formula.factory('isl').opt_prefix}",
# ...and disable isl and cloog version checks in case they upgrade
"--disable-cloog-version-check",
"--disable-isl-version-check",
# ...we build the stage 1 gcc with clang (which is know to fail checks)
"--enable-checking=release",
"--disable-stage1-checking",
# ...speed up build by stop building libstdc++-v3
"--disable-libstdcxx",
"--enable-lto",
# ...disable translations avoid conflict with brew install gcc --enable-nls
'--disable-nls'
]
# https://github.com/mxcl/homebrew/issues/19584#issuecomment-19661219
if build.include? 'enable-multilib' and MacOS.prefer_64_bit?
args << '--enable-multilib'
else
args << '--disable-multilib'
end
mkdir 'build' do
unless MacOS::CLT.installed?
# For Xcode-only systems, we need to tell the sysroot path.
# 'native-system-header's will be appended
args << "--with-native-system-header-dir=/usr/include"
args << "--with-sysroot=#{MacOS.sdk_path}"
end
system '../configure', *args
if build.include? 'enable-profiled-build'
# Takes longer to build, may bug out. Provided for those who want to
# optimise all the way to 11.
system 'make profiledbootstrap'
else
system 'make bootstrap'
end
system "make"
system "make check-fortran" if build.include? 'check'
system 'make install'
end
# This package installs a whole GCC suite. Removing 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 }
man7.rmtree # dupes: fsf fundraising and gpl
# (share/'locale').rmtree
(share/"gcc-#{version}").rmtree # dupes: libstdc++ pretty printer, will be added by gcc* formula
end
test do
fixture = <<-EOS.undent
integer,parameter::m=10000
real::a(m), b(m)
real::fact=0.5
do concurrent (i=1:m)
a(i) = a(i) + fact*b(i)
end do
print *, "done"
end
EOS
Pathname('in.f90').write(fixture)
system "#{bin}/gfortran -c in.f90"
system "#{bin}/gfortran -o test in.o"
assert_equal 'done', `./test`.strip
end
def caveats; <<-EOS.undent
Brews that require a Fortran compiler should use:
depends_on :fortran
EOS
end
end
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