require 'formula'

class Ghc < Formula
  homepage 'http://haskell.org/ghc/'
  url 'http://www.haskell.org/ghc/dist/7.6.3/ghc-7.6.3-src.tar.bz2'
  sha1 '8938e1ef08b37a4caa071fa169e79a3001d065ff'

  bottle do
    revision 2
    sha1 'a6ceeb3f1f9ba2cf0454dc9d45dce69f8a5ae736' => :mavericks
    sha1 'd91ee56c8066bae5173f705e83e15dbb8842f67f' => :mountain_lion
    sha1 '1569f19cdad2675cbff328c0e259d6b8573e9d11' => :lion
  end

  option 'tests', 'Verify the build using the testsuite.'

  devel do
    # http://www.haskell.org/ghc/dist/7.8.1-rc1/README.osx.html
    # This block should largely translate over for 7.8.1 when GM.
    url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-src.tar.bz2'
    sha1 'b9c4d76ff71225fe58bdc4e53d7c659643463b5a'

    # Upstream documentation says lion, but brew test-bot 10.7 fails.
    depends_on :macos => :mountain_lion

    resource 'binary' do
      url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-x86_64-apple-darwin-lion.tar.bz2'
      sha1 '9026d889b160fbf56f97ec1e91576a20e5eec725'
    end

    resource 'testsuite' do
      url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-testsuite.tar.bz2'
      sha1 '17b1d486c1111633bcfa940b9bf940194cf09bc9'
    end
  end

  unless build.devel?
    env :std

    # http://hackage.haskell.org/trac/ghc/ticket/6009
    depends_on :macos => :snow_leopard
    depends_on 'apple-gcc42' if MacOS.version >= :mountain_lion

    option '32-bit'

    # build is not available in the resource's context, so exploit the closure.
    build_32_bit = build.build_32_bit?
    resource 'binary' do
      if Hardware.is_64_bit? and not build_32_bit
        url 'http://www.haskell.org/ghc/dist/7.4.2/ghc-7.4.2-x86_64-apple-darwin.tar.bz2'
        sha1 '7c655701672f4b223980c3a1068a59b9fbd08825'
      else
        url 'http://www.haskell.org/ghc/dist/7.4.2/ghc-7.4.2-i386-apple-darwin.tar.bz2'
        sha1 '60f749893332d7c22bb4905004a67510992d8ef6'
      end
    end

    resource 'testsuite' do
      url 'https://github.com/ghc/testsuite/archive/ghc-7.6.3-release.tar.gz'
      sha1 '6a1973ae3cccdb2f720606032ae84ffee8680ca1'
    end

    fails_with :clang do
      cause <<-EOS.undent
        Building with Clang configures GHC to use Clang as its preprocessor,
        which causes subsequent GHC-based builds to fail.
        EOS
    end

    def patches
      # Fixes 7.6.3 compilation on 10.9
      DATA if MacOS.version >= :mavericks
    end
  end

  def install
    # Move the main tarball contents into a subdirectory
    (buildpath+'Ghcsource').install Dir['*']

    resource('binary').stage do
      # Define where the subformula will temporarily install itself
      subprefix = buildpath+'subfo'

      # ensure configure does not use Xcode 5 "gcc" which is actually clang
      args = ["--prefix=#{subprefix}"]
      args << "--with-gcc=#{ENV.cc}"

      system "./configure", *args
      system 'make -j1 install' # -j1 fixes an intermittent race condition
      ENV.prepend 'PATH', subprefix/'bin', ':'
    end

    cd 'Ghcsource' do
      # Fix an assertion when linking ghc with llvm-gcc
      # https://github.com/Homebrew/homebrew/issues/13650
      ENV['LD'] = 'ld'

      if Hardware.is_64_bit? and not build.build_32_bit?
        arch = 'x86_64'
      else
        ENV.m32 # Need to force this to fix build error on internal libgmp_ar.
        arch = 'i386'
      end

      # ensure configure does not use Xcode 5 "gcc" which is actually clang
      args = ["--prefix=#{prefix}", "--build=#{arch}-apple-darwin"]
      args << "--with-gcc=#{ENV.cc}"

      system "./configure", *args
      system 'make'
      if build.include? 'tests'
        resource('testsuite').stage do
          (buildpath+'Ghcsource/config').install Dir['config/*']
          (buildpath+'Ghcsource/driver').install Dir['driver/*']
          (buildpath+'Ghcsource/mk').install Dir['mk/*']
          (buildpath+'Ghcsource/tests').install Dir['tests/*']
          (buildpath+'Ghcsource/timeout').install Dir['timeout/*']
          cd (buildpath+'Ghcsource/tests') do
            system 'make', 'CLEANUP=1', "THREADS=#{ENV.make_jobs}", 'fast'
          end
        end
      end
      system 'make'
      system 'make -j1 install' # -j1 fixes an intermittent race condition
    end
  end

  def caveats; <<-EOS.undent
    This brew is for GHC only; you might also be interested in haskell-platform.
    EOS
  end
end

__END__
diff --git a/includes/HsFFI.h b/includes/HsFFI.h
index 652fbea..a21811e 100644
--- a/includes/HsFFI.h
+++ b/includes/HsFFI.h
@@ -21,7 +21,7 @@ extern "C" {
 #include "stg/Types.h"

 /* get limits for integral types */
-#ifdef HAVE_STDINT_H
+#if defined HAVE_STDINT_H && !defined USE_INTTYPES_H_FOR_RTS_PROBES_D
 /* ISO C 99 says:
  * "C++ implementations should define these macros only when
  * __STDC_LIMIT_MACROS is defined before <stdint.h> is included."
diff --git a/rts/RtsProbes.d b/rts/RtsProbes.d
index 13f40f8..226f881 100644
--- a/rts/RtsProbes.d
+++ b/rts/RtsProbes.d
@@ -6,6 +6,12 @@
  *
  * ---------------------------------------------------------------------------*/

+#ifdef __APPLE__ && __MACH__
+# if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_9
+#  define USE_INTTYPES_H_FOR_RTS_PROBES_D
+# endif
+#endif
+
 #include "HsFFI.h"
 #include "rts/EventLogFormat.h"

diff --git a/utils/mkdirhier/mkdirhier.sh b/utils/mkdirhier/mkdirhier.sh
index 4c5d5f7..80762f4 100644
--- a/utils/mkdirhier/mkdirhier.sh
+++ b/utils/mkdirhier/mkdirhier.sh
@@ -1,4 +1,4 @@
 #!/bin/sh

-mkdir -p ${1+"$@"}
+mkdir -p ${1+"./$@"}