How to use CMAKE_INSTALL_PREFIX
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)
There are two ways to use this variable:
passing it as a command line argument just like Job mentioned: cmake -DCMAKE_INSTALL_PREFIX=< install_path > ..
assigning value to it in CMakeLists.txt: SET(CMAKE_INSTALL_PREFIX < install_path >) But do remember to place it BEFORE PROJECT(< project_name>) command, otherwise it will not work!
But do remember to place it BEFORE PROJECT(< project_name>) command, otherwise it will not work!
My first week of using cmake - after some years of GNU autotools - so I am still learning (better then writing m4 macros), but I think modifying CMAKE_INSTALL_PREFIX after setting project is the better place.
CMakeLists.txt
cmake_minimum_required (VERSION 2.8)
set (CMAKE_INSTALL_PREFIX /foo/bar/bubba)
message("CIP = ${CMAKE_INSTALL_PREFIX} (should be /foo/bar/bubba")
project (BarkBark)
message("CIP = ${CMAKE_INSTALL_PREFIX} (should be /foo/bar/bubba")
set (CMAKE_INSTALL_PREFIX /foo/bar/bubba)
message("CIP = ${CMAKE_INSTALL_PREFIX} (should be /foo/bar/bubba")
First run (no cache)
CIP = /foo/bar/bubba (should be /foo/bar/bubba
-- The C compiler identification is GNU 4.4.7
-- etc, etc,...
CIP = /usr/local (should be /foo/bar/bubba
CIP = /foo/bar/bubba (should be /foo/bar/bubba
-- Configuring done
-- Generating done
Second run
CIP = /foo/bar/bubba (should be /foo/bar/bubba
CIP = /foo/bar/bubba (should be /foo/bar/bubba
CIP = /foo/bar/bubba (should be /foo/bar/bubba
-- Configuring done
-- Generating done
Let me know if I am mistaken, I have a lot of learning to do. It's fun.
Follow WeChat
Success story sharing
Want to stay one step ahead of the latest teleworks?
Subscribe Now相似问题
- How do I profile C++ code running on Linux?
- How do I recursively grep all directories and subdirectories?
- How can I recursively find all files in current and subfolders based on wildcard matching?
- How to change the output color of echo in Linux
- How do I delete an exported environment variable?
- How do I find all files containing specific text on Linux?
- How do I install pip on macOS or OS X?
PROJECTcommand and how to have thiscmakeoption before it ? You would have an example ?set(CMAKE_INSTALL_PREFIX "/usr" CACHE STRING " " FORCE ), it's ok even if place it afterproject(<project_name>).