您如何在C中嵌入资源文件? [英] How do you embed resource files in C?

问题描述

我知道如何执行此操作的唯一方法是使用单个字节/字符数组将文件转换为C源文件，该数组包含以十六进制表示的资源文件的内容.

The only way I know how to do this is to convert the file into a C source file with a single byte/char array containing the contents of the resource file in hex.

是否有更好或更简单的方法来做到这一点?

Is there a better or easier way to do this?

推荐答案

这是我与gcc-arm交叉编译器一起使用的好技巧；包括通过汇编语言文件的文件.在此示例中，这是我包括的文件public_key.pem的内容.

Here's a nice trick I use with a gcc-arm cross compiler; including a file through an assembly language file. In this example it's the contents of the file public_key.pem I'm including.

pubkey.s

 .section ".rodata"
 .globl pubkey
 .type pubkey, STT_OBJECT
pubkey:
 .incbin "public_key.pem"
 .byte 0
 .size pubkey, .-pubkey

对应的 pubkey.h

#ifndef PUBKEY_H
#define PUBKEY_H
/*
 * This is a binary blob, the public key in PEM format,
 * brought in by pubkey.s
 */
extern const char pubkey[];

#endif // PUBKEY_H

现在，C语言的源代码可以包含pubkey.h，用gcc编译pubkey.s并将其链接到您的应用程序中，然后就可以了. sizeof(pubkey)也可以.

Now the C sources can include pubkey.h, compile the pubkey.s with gcc and link it into your application, and there you go. sizeof(pubkey) also works.

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