How to #define LINUX in cmake?

Asked Jul 22 '19 at 09:01

Active Jul 22 '19 at 10:20

Viewed 757 times

I want to #define LINUX in my script using CMake. Below is just a workaround.

IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    add_definitions( -D__LINUX__ )
ENDIF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")

I wonder what is the proper way to do.

edited Jul 22 '19 at 10:20

Vertexwahn

asked Jul 22 '19 at 09:01

eli chan

5

This is probably a bad idea. Identifiers containing `__` anywhere are reserved for the compiler's internal use. – MSalters Jul 22 '19 at 09:30
Possible duplicate of [Define preprocessor macro through CMake](https://stackoverflow.com/q/9017573/608639) – jww Jul 22 '19 at 17:11

How to #define __LINUX__ in cmake?