Autoconf:如何将安装路径放入 config.h [英] Autoconf: How to get installation paths into config.h

问题描述

我的程序需要在运行时加载一些文件，这些文件将被安装到 ./configure --datadir=/somewhere

My program needs to load some files at run time, which will be installed into whatever folder is given to ./configure --datadir=/somewhere

由于我的程序需要在运行时知道此文件夹的位置，因此我需要在某处#define 一个符号，以便 C 代码可以以字符串形式访问路径.

As my program needs to know where this folder is at run time, I need to #define a symbol somewhere so the C code can access the path as a string.

我目前正在通过修改编译器标志来做到这一点:

I am currently doing this by modifying the compiler flags:

AM_CPPFLAGS = -DDATA_PATH="$(pkgdatadir)"

然而，由于配置脚本已经生成了一个 config.h 文件，其中包含许多其他内容，我希望该符号出现在那里.

However as the configure script already produces a config.h file with a bunch of other things in it, I would like to have the symbol appear in there instead.

这可能吗?

推荐答案

AC_DEFINE_UNQUOTED([DATA_PATH], ["$pkgdatadir"])

虽然修改编译器标志确实是更常用的方法.

Although modifying the compiler flags is really the more usual way to do it.

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