experimental ruby from go (work in progress)

Makefile

RUBY := ruby
RUBY_CFLAGS := $(shell $(RUBY) -e "puts RbConfig::CONFIG['rubyhdrdir'] + ' -I' + RbConfig::CONFIG['rubyarchhdrdir']")
RUBY_LDFLAGS  := $(shell $(RUBY) -e "puts '-L' + RbConfig::CONFIG['rubylibdir']")

CGO_LDFLAGS := "$(RUBY_LDFLAGS)"
CGO_CFLAGS  := "-I$(RUBY_CFLAGS)"

# default to gc, but allow caller to override on command line
GO_COMPILER:=$(GC)
ifeq ($(GO_COMPILER),)
	GO_COMPILER:="gc"
endif

build_cwd = CGO_LDFLAGS=$(CGO_LDFLAGS) CGO_CFLAGS=$(CGO_CFLAGS) go build -compiler=$(GO_COMPILER) .
install_cwd = CGO_LDFLAGS=$(CGO_LDFLAGS) CGO_CFLAGS=$(CGO_CFLAGS) go install -compiler=$(GO_COMPILER) .

all: install

install:
	$(install_cwd)

build:
	$(build_cwd)

ruby.go

package main

/*
 #include "/usr/local/include/ruby-2.0.0/ruby.h"
 #include <stdlib.h>
 #include <string.h>
*/
import "C"

import "fmt"

type VALUE struct {
	ptr *C.VALUE
}

func main() {
	fmt.Println("start")
}

(＾ν＾) :~/_go/src/github.com/kubo39/go-ruby $ make
CGO_LDFLAGS="-L/usr/local/lib/ruby/2.0.0" CGO_CFLAGS="-I/usr/local/include/ruby-2.0.0 -I/usr/local/include/ruby-2.0.0/i686-linux" go install -compiler="gc" .
(＾ν＾) :~/_go/src/github.com/kubo39/go-ruby $ go run ruby.go 
# command-line-arguments
/usr/local/include/ruby-2.0.0/ruby/ruby.h:24:25: fatal error: ruby/config.h: No such file or directory
compilation terminated.