Squashed 'libs/protobuf/' content from commit fcd3b9a85

git-subtree-dir: libs/protobuf
git-subtree-split: fcd3b9a85ef36e46643dc30176cea1a7ad62e02b

ruby/ext/google/protobuf_c/extconf.rb

@@ -0,0 +1,28 @@
+#!/usr/bin/ruby
+
+require 'mkmf'
+
+ext_name = "google/protobuf_c"
+
+dir_config(ext_name)
+
+if RUBY_PLATFORM =~ /darwin/ || RUBY_PLATFORM =~ /linux/
+  $CFLAGS += " -std=gnu99 -O3 -DNDEBUG -fvisibility=hidden -Wall -Wsign-compare -Wno-declaration-after-statement"
+else
+  $CFLAGS += " -std=gnu99 -O3 -DNDEBUG"
+end
+
+
+if RUBY_PLATFORM =~ /linux/
+  # Instruct the linker to point memcpy calls at our __wrap_memcpy wrapper.
+  $LDFLAGS += " -Wl,-wrap,memcpy"
+end
+
+$VPATH << "$(srcdir)/third_party/utf8_range"
+$INCFLAGS << "$(srcdir)/third_party/utf8_range"
+
+$srcs = ["protobuf.c", "convert.c", "defs.c", "message.c",
+         "repeated_field.c", "map.c", "ruby-upb.c", "wrap_memcpy.c",
+         "naive.c", "range2-neon.c", "range2-sse.c"]
+
+create_makefile(ext_name, Dir.pwd+"/../../../../ext/google/protobuf_c")