如何使用CMAKE_INSTALL_PREFIX [英] How to use CMAKE_INSTALL_PREFIX

问题描述

我想生成Makefile与安装目标，使安装到/ usr而不是默认/ usr / local。假设构建目录在源子目录中完成，我执行：

I want to generate Makefile with install target, making installation to /usr instead of default /usr/local. Assuming that build directory is done in the source subdirectory, I execute:

cmake -DCMAKE_INSTALL_PREFIX：PATH = / usr ..

CMakeCache.txt包含： CMAKE_INSTALL_PREFIX：PATH = / usr （OK？）

CMakeCache.txt contains: CMAKE_INSTALL_PREFIX:PATH=/usr (OK?)

现在我执行：

make
make install

所有文件仍然安装到usr / local。什么是错误？

All files are still installed to usr/local. What is wrong?

编辑：
在任何CMakeLists.txt项目文件中没有CMAKE_INSTALL_PREFIX。
在运行cmake之前，我从输出目录中删除所有内容。
在CMakeLists.txt中的安装指令如下：

There is no CMAKE_INSTALL_PREFIX in any of CMakeLists.txt project files. Before running cmake, I delete everything from the output directory. install directives in CMakeLists.txt look like:

install（TARGETS mylibrary DESTINATION lib） p>

install(TARGETS mylibrary DESTINATION lib)

推荐答案

这应该是（参见）：

That should be (see the docs):

cmake -DCMAKE_INSTALL_PREFIX=/usr ..

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