如何使用 CMAKE_INSTALL_PREFIX

问题描述

我想用安装目标生成 Makefile，使安装到/usr 而不是默认的/usr/local.假设构建目录在源子目录中完成，我执行:

cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr ..

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

现在我执行:

制作进行安装

所有文件仍然安装到 usr/local.怎么了?

任何 CMakeLists.txt 项目文件中都没有 CMAKE_INSTALL_PREFIX.在运行 cmake 之前，我从输出目录中删除了所有内容.CMakeLists.txt 中的安装指令如下所示:

install(TARGETS mylibrary DESTINATION lib)

解决方案

那应该是(见文档):

cmake -DCMAKE_INSTALL_PREFIX=/usr ..

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 contains: CMAKE_INSTALL_PREFIX:PATH=/usr (OK?)

Now I execute:

make
make install

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

Edit: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)

解决方案

That should be (see the docs):

cmake -DCMAKE_INSTALL_PREFIX=/usr ..

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