build: Avoid use of Dir.chdir

Author: kateinoigakukun

lib/ruby_wasm/build/product/baseruby.rb

@@ -24,12 +24,11 @@ def build(executor)
       executor.mkdir_p product_build_dir
       @source.build(executor)
       return if Dir.exist?(install_dir)
-      Dir.chdir(product_build_dir) do
-        executor.system @source.configure_file,
-                        "--prefix=#{install_dir}",
-                        "--disable-install-doc"
-        executor.system "make", "install"
-      end
+      executor.system @source.configure_file,
+                      "--prefix=#{install_dir}",
+                      "--disable-install-doc",
+                      chdir: product_build_dir
+      executor.system "make", "install", chdir: product_build_dir
     end
   end
 end

lib/ruby_wasm/build/product/ruby_source.rb

@@ -72,18 +72,18 @@ def fetch(executor)
     def build(executor)
       fetch(executor) unless File.exist?(src_dir)
       unless File.exist?(configure_file)
-        Dir.chdir(src_dir) do
-          executor.system "ruby",
-                          "tool/downloader.rb",
-                          "-d",
-                          "tool",
-                          "-e",
-                          "gnu",
-                          "config.guess",
-                          "config.sub" or
-            raise "failed to download config.guess and config.sub"
-          executor.system "./autogen.sh" or raise "failed to run autogen.sh"
-        end
+        executor.system "ruby",
+                        "tool/downloader.rb",
+                        "-d",
+                        "tool",
+                        "-e",
+                        "gnu",
+                        "config.guess",
+                        "config.sub",
+                        chdir: src_dir or
+          raise "failed to download config.guess and config.sub"
+        executor.system "./autogen.sh", chdir: src_dir or
+          raise "failed to run autogen.sh"
       end
     end
   end