122 lines
3.9 KiB
Ruby
122 lines
3.9 KiB
Ruby
require 'formula'
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# todo: Use graphite loop optimizations? (would depends_on 'cloog')
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class Gfortran < Formula
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homepage 'http://gcc.gnu.org/wiki/GFortran'
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url 'http://ftpmirror.gnu.org/gcc/gcc-4.8.0/gcc-4.8.0.tar.bz2'
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mirror 'http://ftp.gnu.org/gnu/gcc/gcc-4.8.0/gcc-4.8.0.tar.bz2'
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sha1 'b4ee6e9bdebc65223f95067d0cc1a634b59dad72'
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option 'enable-profiled-build', 'Make use of profile guided optimization when bootstrapping GCC'
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option 'check', 'Run the make check fortran. This is for maintainers.'
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depends_on 'gmp'
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depends_on 'libmpc'
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depends_on 'mpfr'
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# http://gcc.gnu.org/install/test.html
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depends_on 'dejagnu' if build.include? 'check'
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fails_with :clang do
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build 421
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cause <<-EOS.undent
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"fatal error: error in backend: ran out of registers during register allocation"
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If you have any knowledge to share or can provide a fix, please open an issue.
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Thanks!
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EOS
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end
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def install
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# Sandbox the GCC lib, libexec and include directories so they don't wander
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# around telling small children there is no Santa Claus. This results in a
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# partially keg-only brew following suggestions outlined in the "How to
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# install multiple versions of GCC" section of the GCC FAQ:
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# http://gcc.gnu.org/faq.html#multiple
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gfortran_prefix = prefix/'gfortran'
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args = [
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# Sandbox everything...
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"--prefix=#{gfortran_prefix}",
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# ...except the stuff in share...
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"--datarootdir=#{share}",
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# ...and the binaries...
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"--bindir=#{bin}",
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"--with-system-zlib",
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# ...opt_prefix survives upgrades and works even if `brew unlink gmp`
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"--with-gmp=#{Formula.factory('gmp').opt_prefix}",
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"--with-mpfr=#{Formula.factory('mpfr').opt_prefix}",
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"--with-mpc=#{Formula.factory('libmpc').opt_prefix}",
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# ...we build the stage 1 gcc with clang (which is know to fail checks)
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"--enable-checking=release",
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"--disable-stage1-checking",
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# ...speed up build by ignoring cxx
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"--disable-build-poststage1-with-cxx",
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"--disable-libstdcxx-pc",
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# ...disable translations avoid conflict with brew install gcc --enable-nls
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'--disable-nls'
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]
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mkdir 'build' do
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unless MacOS::CLT.installed?
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# For Xcode-only systems, we need to tell the sysroot path.
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# 'native-system-header's will be appended
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args << "--with-native-system-header-dir=/usr/include"
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args << "--with-sysroot=#{MacOS.sdk_path}"
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end
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system '../configure', "--enable-languages=fortran", *args
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if build.include? 'enable-profiled-build'
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# Takes longer to build, may bug out. Provided for those who want to
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# optimise all the way to 11.
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system 'make profiledbootstrap'
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else
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system 'make bootstrap'
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end
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system "make"
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system "make check-fortran" if build.include? 'check'
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system 'make install'
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end
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# This package installs a whole GCC suite. Removing non-fortran components:
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bin.children.reject{ |p| p.basename.to_s.match(/gfortran/) }.each{ |p| rm p }
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man1.children.reject{ |p| p.basename.to_s.match(/gfortran/) }.each{ |p| rm p }
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man7.rmtree # dupes: fsf fundraising and gpl will be added by gcc formula
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# (share/'locale').rmtree
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end
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test do
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fixture = <<-EOS.undent
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integer,parameter::m=10000
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real::a(m), b(m)
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real::fact=0.5
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do concurrent (i=1:m)
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a(i) = a(i) + fact*b(i)
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end do
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print *, "done"
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end
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EOS
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Pathname('in.f90').write(fixture)
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system "#{bin}/gfortran -c in.f90"
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system "#{bin}/gfortran -o test in.o"
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`./test`.strip =='done'
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end
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def caveats; <<-EOS.undent
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Brews that require a Fortran compiler should not use:
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depends_on 'gfortran'
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The preferred method of declaring Fortran support is to use:
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def install
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...
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ENV.fortran
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...
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end
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EOS
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end
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end
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