如何编译mruby例子吗？ [英] How to compile an mruby example?
问题描述
了解 mruby 听证会启发我开始学习C语言编程。我走过了一些教程在网上工作，所以我了解的基础知识，但现在我想先通过编译一个示例应用程序与mruby播放。我知道如何编译一个C文件，但我被困在试图找出如何还用我自己的code编译一起mruby。
我用GCC在Mac OS X 10.8。
使用这个例子：
的#include＆LT;＆stdlib.h中GT;
＃包括LT＆;＆stdio.h中GT;＃包括LT＆;＆mruby.h GT;
＃包括LT＆; mruby / compile.h＆GT;INT主要（无效）
{
mrb_state * MRB = mrb_open（）;
字符code [] =P世界，你好！'
的printf（从C执行红宝石code \\ N！）; mrb_load_string（MRB，code）;
返回0;
}
和运行此命令：
的gcc example.c
我明明得到错误：
engine.c：4：19：错误：mruby.h：没有这样的文件或目录
我克隆了git的回购和创建符号链接到包含目录，但我pretty知道我做错了。
我应该怎样包括mruby在我的code，使这一切都编在一起？
更新：下面是我有什么目录结构，注意符号链接到mruby包括目录：
$树-l。
。
├──example.c
└──包括
└──mruby - ＆GT; ../../mruby/include
├──mrbconf.h
├──mruby
│├──array.h
│├──class.h
│├──compile.h
│├──data.h
│├──debug.h
│├──dump.h
│├──gc.h
│├──hash.h
│├──irep.h
│├──khash.h
│├──numeric.h
│├──proc.h
│├──range.h
│├──string.h中
│├──value.h
│└──variable.h
└──mruby.h
当我通过包括目录编译：
的gcc example.c -I包括/ mruby
我收到以下错误：
适用于建筑x86_64的未定义符号：
_mrb_load_string，从引用：
在_main ccd8XYkm.o
_mrb_open，从引用：
在_main ccd8XYkm.o
LD：符号（S）未找到x86_64的架构
collect2：劳工处返回1退出状态
更新：我也跟着在的说明mruby /安装文件（这基本上只是说运行make在mruby项目的根目录下）。这增加了 mruby /编译/主机目录下的一堆目录和领域，包括文件的lib / libmruby.a 。我能够通过编译时包括这个文件编译示例脚本。
GCC -Iinclude / mruby example.c ../mruby/build/host/lib/libmruby.a
现在我跑我的应用程序：
$ ./a.out
从C执行红宝石code！
你好，世界！
而不是
的#include＆LT; mruby.h＆GT;
＃包括LT＆; mruby / compile.h＆GT;
尝试
的#includemruby.h
＃包括mruby / compile.h
让我知道，如果有什么差别。编译器使用不同的搜索路径，以＆lt包括;>和。 是本地的。
您也可以尝试
GCC -ipath /到/红宝石/有/ DIR example.c
Hearing about mruby has inspired me to start learning C programming. I have worked through a few tutorials online so I understand the basics, but now I would like to start playing with mruby by compiling an example application. I understand how to compile a single C file, but I'm stuck at trying to figure out how to also compile mruby along with my own code.
I'm using GCC on Mac OS X 10.8.
Using this example:
#include <stdlib.h>
#include <stdio.h>
#include <mruby.h>
#include <mruby/compile.h>
int main(void)
{
mrb_state *mrb = mrb_open();
char code[] = "p 'hello world!'";
printf("Executing Ruby code from C!\n");
mrb_load_string(mrb, code);
return 0;
}
And running this command:
gcc example.c
I obviously get the error:
engine.c:4:19: error: mruby.h: No such file or directory
I have cloned the git repo and created a symlink to the include directory, but I'm pretty sure I'm doing it wrong.
How should I include mruby in my code so that it's all compiled together?
Update: Here is the directory structure of what I have, note the symlink to the mruby include directory:
$ tree -l .
.
├── example.c
└── include
└── mruby -> ../../mruby/include
├── mrbconf.h
├── mruby
│ ├── array.h
│ ├── class.h
│ ├── compile.h
│ ├── data.h
│ ├── debug.h
│ ├── dump.h
│ ├── gc.h
│ ├── hash.h
│ ├── irep.h
│ ├── khash.h
│ ├── numeric.h
│ ├── proc.h
│ ├── range.h
│ ├── string.h
│ ├── value.h
│ └── variable.h
└── mruby.h
When I compile by including the directory:
gcc example.c -I include/mruby
I get the following errors:
Undefined symbols for architecture x86_64:
"_mrb_load_string", referenced from:
_main in ccd8XYkm.o
"_mrb_open", referenced from:
_main in ccd8XYkm.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
Update: I followed the instructions in the mruby/INSTALL file (which basically just said run make in the root directory of the mruby project). This added a bunch of directories and field in the mruby/build/host directory, including the file lib/libmruby.a. I was able to compile the example script by including this file when compiling.
gcc -Iinclude/mruby example.c ../mruby/build/host/lib/libmruby.a
Now I run my app:
$ ./a.out
Executing Ruby code from C!
"hello world!"
Instead of
#include <mruby.h>
#include <mruby/compile.h>
Try
#include "mruby.h"
#include "mruby/compile.h"
Let me know if that makes any difference. The compiler uses different search paths for includes with <> and "". "" are local.
You can also try
gcc -Ipath/to/ruby/include/dir example.c
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