Add bin and edit workflow

bin/gems/google-protobuf-4.36.1-x86_64-linux-gnu/ext/google/protobuf_c/extconf.rb

@@ -0,0 +1,38 @@
+#!/usr/bin/ruby
+
+require 'mkmf'
+
+ext_name = "google/protobuf_c"
+
+dir_config(ext_name)
+
+if ENV["CC"]
+  RbConfig::CONFIG["CC"] = RbConfig::MAKEFILE_CONFIG["CC"] = ENV["CC"]
+end
+
+if ENV["CXX"]
+  RbConfig::CONFIG["CXX"] = RbConfig::MAKEFILE_CONFIG["CXX"] = ENV["CXX"]
+end
+
+if ENV["LD"]
+  RbConfig::CONFIG["LD"] = RbConfig::MAKEFILE_CONFIG["LD"] = ENV["LD"]
+end
+
+debug_enabled = ENV["PROTOBUF_CONFIG"] == "dbg"
+
+additional_c_flags = debug_enabled ? "-O0 -fno-omit-frame-pointer -fvisibility=default -g" : "-O3 -DNDEBUG -fvisibility=hidden"
+
+if RUBY_PLATFORM =~ /darwin/ || RUBY_PLATFORM =~ /linux/ || RUBY_PLATFORM =~ /freebsd/
+  $CFLAGS += " -std=gnu99 -Wall -Wsign-compare -Wno-declaration-after-statement #{additional_c_flags}"
+else
+  $CFLAGS += " -std=gnu99 #{additional_c_flags}"
+end
+
+$VPATH << "$(srcdir)/third_party/utf8_range"
+$INCFLAGS += " -I$(srcdir)/third_party/utf8_range"
+
+$srcs = ["protobuf.c", "convert.c", "defs.c", "message.c", "repeated_field.c",
+         "map.c", "ruby-upb.c", "utf8_range.c", "shared_convert.c",
+         "shared_message.c"]
+
+create_makefile(ext_name)