Merge branch 'release/0.9'

.travis.yml

@@ -0,0 +1,11 @@
+language: objective-c
+before_install:
+  - brew update
+install:
+  - mkdir -p $(brew --repo)/Library/Taps/travis
+  - ln -s $PWD $(brew --repo)/Library/Taps/travis/homebrew-testtap
+  - brew tap --repair
+script:
+  - brew audit iwyu
+  - brew install -v iwyu
+  - brew test iwyu

CHANGELOG.md

@@ -0,0 +1,7 @@
+### homebrew-iwyu v0.9 (November 19, 2014) ###
+
+* Initial release
+
+* Builds `clang_3.5` tag from Subversion
+
+* Compiles against LLVM 3.5

README.md

@@ -1,4 +1,39 @@
-homebrew-iwyu
+Homebrew IWYU
 =============
 
-Use the Homebrew package manager to easily install include-what-you-use
+[![Build Status](https://img.shields.io/travis/jasonmp85/homebrew-iwyu/master.svg)][status]
+[![Release](https://img.shields.io/github/release/jasonmp85/homebrew-iwyu.svg)][release]
+[![License](https://img.shields.io/:license-mit-blue.svg)][license]
+
+This formula makes it easy to install `include-what-you-use` on any modern OS X system.
+
+Just `brew tap jasonmp85/iwyu` and then `brew install iwyu`. Be patient: `include-what-you-use` depends on LLVM, which will take a while to build.
+
+Using `iwyu`
+------------
+
+The [project's page][iwyu-page] goes into more detail, but there are three basic ways to use `iwyu`…
+
+### Directly
+
+Invoke it on a single file, as you would a compiler: `iwyu hello_world.c`. Messages about what includes to add or remove will be printed to standard output.
+
+### From `make`
+
+Tell make to use it as the C compiler: `make -k CC=iwyu`. It's necessary to use the `-k` flag to continue after errors (`iwyu` always errors to signal that no compilation has actually taken place).
+
+### Using `fix_include`
+
+`include-what-you-use` bundles a Python script capable of parsing its output in order to automatically fix any include problems, in-place if you desire. It's not perfect, but something like `fix_include hello_world.c < iwyu hello_world.c` should work to update a file named _hello_world.c_ with the suggestions made by `iwyu`.
+
+Copyright
+---------
+
+Copyright (c) 2014 Jason Petersen
+
+Code released under the [MIT License](LICENSE).
+
+[status]: https://travis-ci.org/jasonmp85/homebrew-iwyu
+[release]: https://github.com/jasonmp85/homebrew-iwyu/releases/latest
+[license]: LICENSE
+[iwyu-page]: http://include-what-you-use.com

iwyu.rb

@@ -0,0 +1,55 @@
+require 'English'
+require 'formula'
+
+# This formula provides an easy way to install include-what-you-use, a tool for
+# automatically managing include directives within C and C++ projects. It will
+# build and install include-what-you-use, symlink it as iwyu, and install a
+# Python wrapper to automatically correct includes (fix_include).
+class Iwyu < Formula
+  CLANG_VERSION = '3.5'
+
+  homepage 'https://code.google.com/p/include-what-you-use/'
+  url 'http://include-what-you-use.googlecode.com/svn/tags/clang_' +
+      "#{Iwyu::CLANG_VERSION}", revision: '590'
+  version '0.3'
+
+  depends_on 'cmake' => :build
+  depends_on 'llvm' => [:build, 'with-clang']
+
+  def install
+    clang_path = "#{HOMEBREW_PREFIX}/Cellar/llvm/#{Iwyu::CLANG_VERSION}.0/"
+
+    system 'cmake', "-DLLVM_PATH=#{clang_path}",
+           "-DCMAKE_CXX_FLAGS='-stdlib=libc++'",
+           "-DCMAKE_EXE_LINKER_FLAGS='-stdlib=libc++'",
+           "-DCMAKE_INSTALL_PREFIX=#{prefix}/",
+           buildpath, *std_cmake_args
+    system 'make', 'install'
+
+    bin.install('fix_includes.py' => 'fix_include')
+    bin.install_symlink('include-what-you-use' => 'iwyu')
+    prefix.install_symlink "#{clang_path}/lib"
+  end
+
+  test do
+    # write out a header and a C file relying on transitive dependencies
+    (testpath / 'demo.h').write('#include <stdio.h>')
+    (testpath / 'demo.c').write <<-EOS.undent
+    #include "demo.h"
+
+    int main(void)
+    { printf("hello world"); }
+    EOS
+
+    # iwyu always exits with status 1 so assert that and capture output
+    fixes = shell_output "iwyu #{testpath}/demo.c 2>&1", 1
+
+    # pass the output to the fixer script and assert that it fixed one file
+    results = pipe_output 'fix_include', fixes
+
+    assert_match /IWYU edited 1 file/, results
+
+    # sigh. they use the status code to signal how many files were edited
+    assert_equal 1, $CHILD_STATUS.exitstatus
+  end
+end