Migrate to GoGem::RakeTask.build_env_vars

Author: sue445

Rakefile

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require_relative "_gem/lib/go_gem/rake_task"
+
 # @return [String]
 def repo_root
   __dir__

_tasks/go.rake

@@ -1,47 +1,14 @@
 # frozen_string_literal: true
 
-# @return [Hash<String, String>]
-def env_vars
-  ldflags = "-L#{RbConfig::CONFIG["libdir"]} -l#{RbConfig::CONFIG["RUBY_SO_NAME"]}"
-
-  case `#{RbConfig::CONFIG["CC"]} --version` # rubocop:disable Lint/LiteralAsCondition
-  when /Free Software Foundation/
-    ldflags << " -Wl,--unresolved-symbols=ignore-all"
-  when /clang/
-    ldflags << " -undefined dynamic_lookup"
-  end
-
-  cflags = "#{RbConfig::CONFIG["CFLAGS"]} -I#{RbConfig::CONFIG["rubyarchhdrdir"]} -I#{RbConfig::CONFIG["rubyhdrdir"]}"
-
-  # FIXME: Workaround for GitHub Actions
-  if ENV["GITHUB_ACTIONS"]
-    cflags.gsub!("-Wno-self-assign", "")
-    cflags.gsub!("-Wno-parentheses-equality", "")
-    cflags.gsub!("-Wno-constant-logical-operand", "")
-    cflags.gsub!("-Wsuggest-attribute=format", "")
-    cflags.gsub!("-Wold-style-definition", "")
-    cflags.gsub!("-Wsuggest-attribute=noreturn", "")
-    ldflags.gsub!("-Wl,--unresolved-symbols=ignore-all", "")
-  end
-
-  ld_library_path = RbConfig::CONFIG["libdir"]
-
-  {
-    "CGO_CFLAGS"      => cflags,
-    "CGO_LDFLAGS"     => ldflags,
-    "LD_LIBRARY_PATH" => ld_library_path,
-  }
-end
-
 namespace :go do
   desc "Run go test"
   task :test do
-    sh env_vars, "go test -mod=readonly -count=1 #{ENV["GO_TEST_ARGS"]} ./..."
+    sh GoGem::RakeTask.build_env_vars, "go test -mod=readonly -count=1 #{ENV["GO_TEST_ARGS"]} ./..."
   end
 
   desc "Run go test -race"
   task :testrace do
-    sh env_vars, "go test -mod=readonly -count=1 #{ENV["GO_TEST_ARGS"]} -race  ./..."
+    sh GoGem::RakeTask.build_env_vars, "go test -mod=readonly -count=1 #{ENV["GO_TEST_ARGS"]} -race  ./..."
   end
 
   desc "Run go fmt"
@@ -54,7 +21,7 @@ namespace :go do
     sh "which golangci-lint" do |ok, _|
       raise "golangci-lint isn't installed. See. https://golangci-lint.run/welcome/install/" unless ok
     end
-    sh env_vars, "golangci-lint run"
+    sh GoGem::RakeTask.build_env_vars, "golangci-lint run"
   end
 
   desc "Run all build tasks in go"