Building the grpc DLLs.

Rakefile

@@ -4,6 +4,8 @@ require 'rspec/core/rake_task'
 require 'rubocop/rake_task'
 require 'bundler/gem_tasks'
 
+load 'tools/distrib/docker_for_windows.rb'
+
 # Add rubocop style checking tasks
 RuboCop::RakeTask.new(:rubocop) do |task|
   task.options = ['-c', 'src/ruby/.rubocop.yml']
@@ -60,20 +62,24 @@ end
 
 desc 'Build the gem file under rake_compiler_dock'
 task 'gem:windows' do
-  require 'digest'
-  require 'rake_compiler_dock'
-
   grpc_config = ENV['GRPC_CONFIG'] || 'opt'
   V = ENV['V'] || '0'
 
-  version = Digest::SHA1.file('third_party/rake-compiler-dock/Dockerfile').hexdigest
-  image_name = 'grpc/rake-compiler-dock:' + version
-  cmd = "docker build -t #{image_name} third_party/rake-compiler-dock"
-  puts cmd
-  system cmd
-  exit 1 unless $? == 0
-  ENV['RAKE_COMPILER_DOCK_IMAGE'] = image_name
-  RakeCompilerDock.sh "bundle && rake cross native gem RUBY_CC_VERSION=2.3.0:2.2.2:2.1.6:2.0.0 GRPC_CONFIG=#{grpc_config} V=#{V}"
+  env = 'CPPFLAGS="-D_WIN32_WINNT=0x600 -DUNICODE -D_UNICODE" '
+  env += 'SYSTEM=MINGW32 '
+  env += 'EMBED_ZLIB=true '
+  env += 'BUILDDIR=/tmp '
+  out = '/tmp/libs/opt/grpc-0.dll'
+
+  env_comp = 'CC=x86_64-w64-mingw32-gcc '
+  env_comp += 'LD=x86_64-w64-mingw32-gcc '
+  docker_for_windows "#{env} #{env_comp} make #{out} && cp #{out} grpc_c.64.ruby"
+
+  env_comp = 'CC=i686-w64-mingw32-gcc '
+  env_comp += 'LD=i686-w64-mingw32-gcc '
+  docker_for_windows "#{env} #{env_comp} make #{out} && cp #{out} grpc_c.32.ruby"
+
+  docker_for_windows "bundle && rake cross native gem RUBY_CC_VERSION=2.3.0:2.2.2:2.1.6:2.0.0 GRPC_CONFIG=#{grpc_config} V=#{V}"
 end
 
 # Define dependencies between the suites.

grpc.gemspec

@@ -18,6 +18,7 @@ Gem::Specification.new do |s|
 
   s.files = %w( Makefile )
   s.files += %w( etc/roots.pem )
+  s.files += %w( tools/distrib/docker_for_windows.rb )
   s.files += Dir.glob('src/ruby/bin/**/*')
   s.files += Dir.glob('src/ruby/ext/**/*')
   s.files += Dir.glob('src/ruby/lib/**/*')

src/core/support/subprocess_windows.c

@@ -59,7 +59,7 @@ gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) {
   STARTUPINFO si;
   PROCESS_INFORMATION pi;
 
-  char *args = gpr_strjoin_sep(argv, argc, " ", NULL);
+  char *args = gpr_strjoin_sep(argv, (size_t)argc, " ", NULL);
   TCHAR *args_tchar;
 
   args_tchar = gpr_char_to_tchar(args);
@@ -119,7 +119,7 @@ int gpr_subprocess_join(gpr_subprocess *p) {
     return 0;
   }
   if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) {
-    return dwExitCode;
+    return (int)dwExitCode;
   } else {
     return -1;  // failed to get exit code
   }

third_party/rake-compiler-dock/Dockerfile

@@ -25,8 +25,52 @@ RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3 && \
         source /etc/rubybashrc && \
         rvmsudo rvm cleanup all "
 
+# Regenerate the following using build.sh if the build folder changes.
+RUN echo \
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+| base64 -d | tar xzC /tmp
+
 # Import patch files for ruby and gems
-COPY build/patches /home/rvm/patches/
+RUN cp -r /tmp/build/patches /home/rvm/patches/
 ENV BASH_ENV /etc/rubybashrc
 
 # install rubies and fix permissions on
@@ -65,7 +109,7 @@ RUN bash -c "rvm use 2.3.0 --default && \
     rake-compiler cross-ruby VERSION=2.1.6 HOST=x86_64-w64-mingw32 && \
     rake-compiler cross-ruby VERSION=2.0.0-p645 HOST=i686-w64-mingw32 && \
     rake-compiler cross-ruby VERSION=2.0.0-p645 HOST=x86_64-w64-mingw32 && \
-    rm -rf ~/.rake-compiler/builds ~/.rake-compiler/sources && \
+    rm -rf ~/.rake-compiler/tmp/builds ~/.rake-compiler/sources && \
     find /usr/local/rvm -type d -print0 | sudo xargs -0 chmod g+sw "
 
 RUN bash -c " \
@@ -80,7 +124,7 @@ RUN sed -i -- "s:/root/.rake-compiler:/usr/local/rake-compiler:g" /usr/local/rak
     echo "export PATH=\$PATH:/opt/mingw/mingw64/bin" >> /etc/bash.bashrc
 
 # Install wrappers for strip commands as a workaround for "Protocol error" in boot2docker.
-COPY build/strip_wrapper /root/
+RUN cp /tmp/build/strip_wrapper /root/
 RUN mv /opt/mingw/mingw32/bin/i686-w64-mingw32-strip /opt/mingw/mingw32/bin/i686-w64-mingw32-strip.bin && \
     mv /opt/mingw/mingw64/bin/x86_64-w64-mingw32-strip /opt/mingw/mingw64/bin/x86_64-w64-mingw32-strip.bin && \
     mv /usr/bin/i686-w64-mingw32-strip /usr/bin/i686-w64-mingw32-strip.bin && \
@@ -98,14 +142,14 @@ RUN find / -name libwinpthread-1.dll | while read f ; do rm $f ; done
 RUN find / -name *msvcrt-ruby*.dll.a | while read f ; do n=`echo $f | sed s/.dll//` ; mv $f $n ; done
 
 # Install SIGINT forwarder
-COPY build/sigfw.c /root/
+RUN cp /tmp/build/sigfw.c /root/
 RUN gcc $HOME/sigfw.c -o /usr/local/bin/sigfw
 
 # Install user mapper
-COPY build/runas /usr/local/bin/
+RUN cp /tmp/build/runas /usr/local/bin/
 
 # Install sudoers configuration
-COPY build/sudoers /etc/sudoers.d/rake-compiler-dock
+RUN cp /tmp/build/sudoers /etc/sudoers.d/rake-compiler-dock
 
 ENV RUBY_CC_VERSION 2.3.0:2.2.2:2.1.6:2.0.0
 

third_party/rake-compiler-dock/build.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Run this to produce the snipplet of data to insert in the Dockerfile.
+
+echo 'RUN echo \\'
+tar cz build | base64 | sed 's/$/\\/'
+echo '| base64 -d | tar xzC /'

tools/distrib/docker_for_windows.rb

@@ -0,0 +1,33 @@
+#!/usr/bin/env ruby
+
+def grpc_root()
+  File.expand_path(File.join(File.dirname(__FILE__), '..', '..'))
+end
+
+def docker_for_windows_image()
+  require 'digest'
+
+  dockerfile = File.join(grpc_root, 'third_party', 'rake-compiler-dock', 'Dockerfile') 
+  dockerpath = File.dirname(dockerfile)
+  version = Digest::SHA1.file(dockerfile).hexdigest
+  image_name = 'grpc/rake-compiler-dock:' + version
+  cmd = "docker build -t #{image_name} --file #{dockerfile} #{dockerpath}"
+  puts cmd
+  system cmd
+  raise "Failed to build the docker image." unless $? == 0
+  image_name
+end
+
+def docker_for_windows(args)
+  require 'rake_compiler_dock'
+
+  args = 'bash -l' if args.empty?
+
+  ENV['RAKE_COMPILER_DOCK_IMAGE'] = docker_for_windows_image
+
+  RakeCompilerDock.sh args
+end
+
+if __FILE__ == $0
+  docker_for_windows $*.join(' ')
+end