rake bootstrap fails with Ruby 2.2 due to json gem

[chrisballinger]

I noticed this when attempting to test my fix for this issue: CocoaPods/CocoaPods#5291

It can be fixed by modifying cocoapods-trunk's Gemfile to point to this gem:

# This is the version that ships with OS X 10.10, so be sure we test against it.
# At the same time, the 1.7.7 version won't install cleanly on Ruby > 2.2,
# so we use a fork that makes a trivial change to a macro invocation.
gem 'json', :git => 'https://github.com/segiddins/json.git', :branch => 'seg-1.7.7-ruby-2.2'

Bootstrapping cocoapods-trunk
rake --no-search bootstrap
/Users/chrisbal/.rbenv/versions/2.2.3/bin/bundle

--------------------------------------------------------------------------------
Installing gems
--------------------------------------------------------------------------------

bundle install
Fetching gem metadata from https://rubygems.org/............
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies...
Using rake 10.4.2
Using i18n 0.7.0
Installing json 1.7.7 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/chrisbal/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20160524-86331-ilxmzy.rb extconf.rb
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling generator.c
In file included from generator.c:1:
./../fbuffer/fbuffer.h:175:47: error: too few arguments provided to function-like macro invocation
    VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                                              ^
/Users/chrisbal/.rbenv/versions/2.2.3/include/ruby-2.2.0/ruby/intern.h:793:9: note: macro 'rb_str_new' defined here
#define rb_str_new(str, len) __extension__ (    \
        ^
In file included from generator.c:1:
./../fbuffer/fbuffer.h:175:11: warning: incompatible pointer to integer conversion initializing 'VALUE' (aka 'unsigned long') with an expression of type 'VALUE (const char *, long)' (aka 'unsigned long (const char *, long)') [-Wint-conversion]
    VALUE result = rb_str_new(FBUFFER_PAIR(fb));
          ^        ~~~~~~~~~~
1 warning and 1 error generated.
make: *** [generator.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/chrisbal/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/json-1.7.7 for inspection.
Results logged to /Users/chrisbal/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/json-1.7.7/gem_make.out

[guillaumealgis]

Disclaimer: I'm a huge Ruby noob. Please bear with me :/

I think the patch applied to the Gemfiles broke the install when using Ruby 2.0.0.
I'm using a default Ruby install on 10.11, and when running rake bootstrap I'm getting:

--------------------------------------------------------------------------------
Installing gems
--------------------------------------------------------------------------------

bundle install
Rubygems 2.0.14.1 is not threadsafe, so your gems will be installed one at a time. Upgrade to Rubygems 2.1.0 or higher to enable parallel gem installation.
Resolving dependencies...
Using rake 10.4.2
Using i18n 0.7.0
Using json 1.7.7 from https://github.com/segiddins/json.git (at seg-1.7.7-ruby-2.2@a9588bc)

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
creating Makefile

make "DESTDIR="
linking shared-object json/ext/generator.bundle

make "DESTDIR=" install
/usr/bin/install -c -m 0755 generator.bundle ./.gem.20160831-7164-whwbxw/json/ext
install: ./.gem.20160831-7164-whwbxw/json/ext: No such file or directory
make: *** [install-so] Error 71


Gem files will remain installed in /Users/guillaume/.bundle/ruby/2.0.0/json-a9588bc4334c for inspection.
Results logged to /Users/guillaume/.bundle/ruby/2.0.0/json-a9588bc4334c/ext/json/ext/generator/gem_make.out

... SNIP ...

An error occurred while installing json (1.7.7), and Bundler cannot continue.
Make sure that `gem install json -v '1.7.7'` succeeds before bundling.
rake aborted!
Command failed with status (5): [bundle install...]
/Users/guillaume/Projects/Rainforest/cocoapods-trunk/Rakefile:9:in `block in <top (required)>'
/Users/guillaume/.gem/ruby/2.0.0/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
Tasks: TOP => bootstrap
(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [rake --no-search bootstrap...]
/Users/guillaume/Projects/Rainforest/Rakefile:115:in `block (3 levels) in <top (required)>'
/Users/guillaume/Projects/Rainforest/Rakefile:113:in `chdir'
/Users/guillaume/Projects/Rainforest/Rakefile:113:in `block (2 levels) in <top (required)>'
/Users/guillaume/Projects/Rainforest/Rakefile:112:in `each'
/Users/guillaume/Projects/Rainforest/Rakefile:112:in `block in <top (required)>'
/Users/guillaume/Projects/Rainforest/Rakefile:54:in `block in <top (required)>'
/Users/guillaume/.gem/ruby/2.0.0/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
Tasks: TOP => bootstrap_repos
(See full trace by running task with --trace)

Reverting the patch by replacing gem 'json', :git => 'https://github.com/segiddins/json.git', :branch => 'seg-1.7.7-ruby-2.2' by gem 'json', '1.7.7' in all Gemfiles I could find fixed the issue and rake bootstrap finished nicely.

Bundle complete! 12 Gemfile dependencies, 35 gems now installed.

---

System info

$ sw_vers 
ProductName:    Mac OS X
ProductVersion: 10.11.6
BuildVersion:   15G31

$ type -a ruby
ruby is /usr/bin/ruby

$ ruby --version
ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin15]

[dlo]

I'm getting this error as well.

[tejasmanohar]

Same :\

[icecrystal23]

I worked around this particular issue by explicitly installing bundler v1.3 (instead of 2.0.x which was installed by default when I ran gem install bundler)