Clion or cmake does not see environment variable

问题:

I'm using CLion IDE, Cmake and trying to write Hello world using CERN ROOT library.

CMakeLists.txt:

message(STATUS $ENV{ROOTSYS})

~/.bashrc:

export ROOTSYS="$HOME/tools/root-build/"

During build in CLion $ENV{ROOTSYS} is empty by some reason. But $ENV{PATH} returns correct $PATH.

What I did wrong?

回答1:

From CLion developers FAQ:

Q: How to pass environment variables and parameters to CMake in CLion?

A: The best way is to use Preferences/Settings | Build, Execution, Deployment | CMake dialog.

As for .bashrc file, it is only used by bash. CLion doesn't need to use bash for run configuration process.

回答2:

Go to File -> Settings -> Build,Execution,Deployment

Click Pass system and...

For old Clion

For Clion 2017.2

Variables from .bashrc aren't passed

回答3:

On Ubuntu 17.04, you can set a permanent environment variable by modifying

    /etc/enviornment

[I assume you can do this in other versions of Linux, but I provide the version of the system that I am using.]

For example, I am compiling test cases that assume that ${GOOGLE_MOCK} has been set. I added the following to my /etc/environment file, and now I don't have to rewrite all of my CMakeLists.txt files:

    GOOGLE_MOCK=/usr/local/src/googletest/googlemock
    GOOGLE_TEST_HOME=/usr/local/src/googletest/googletest

Clion just became much more useable. Hope this helps someone else!

回答4:

One thing you can check is the .gdbinit. Clion on Linux will invoke the gdb, which will read in the .gdbinit. I happen to have set environment LD_LIBRARY_PATH xxx in my .gdbinit file, which will override whatever you set LD_LIBRARY_PATH from shell, whether through direct export or through .bashrc, or from CLion environment variable panel.

Hope this helps.