Make ruby tests see changes to C core

src/ruby/ext/grpc/extconf.rb

@@ -88,10 +88,8 @@ else
     else
       grpc_lib_dir = File.join(File.join(grpc_root, 'libs'), grpc_config)
     end
-    unless File.exist?(File.join(grpc_lib_dir, 'libgrpc.a'))
     print "Building internal gRPC\n"
     system("make -C #{grpc_root} static_c CONFIG=#{grpc_config}")
-    end
     $CFLAGS << ' -I' + File.join(grpc_root, 'include')
     $LDFLAGS << ' -L' + grpc_lib_dir
     raise 'gpr not found' unless have_library('gpr', 'gpr_now')

tools/run_tests/build_ruby.sh

@@ -36,5 +36,7 @@ export GRPC_CONFIG=${CONFIG:-opt}
 # change to grpc's ruby directory
 cd $(dirname $0)/../../src/ruby
 
+rm -rf ./tmp
+
 bundle install
 rake compile:grpc

tools/run_tests/run_tests.py

@@ -253,7 +253,7 @@ class RubyLanguage(object):
                             environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def make_targets(self):
-    return ['run_dep_checks']
+    return ['static_c']
 
   def build_steps(self):
     return [['tools/run_tests/build_ruby.sh']]