diff options
Diffstat (limited to 'Help')
| -rw-r--r-- | Help/variable/CMAKE_SYSTEM_PROCESSOR.rst | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Help/variable/CMAKE_SYSTEM_PROCESSOR.rst b/Help/variable/CMAKE_SYSTEM_PROCESSOR.rst index 8ad89f1..ce16215 100644 --- a/Help/variable/CMAKE_SYSTEM_PROCESSOR.rst +++ b/Help/variable/CMAKE_SYSTEM_PROCESSOR.rst @@ -1,8 +1,13 @@ CMAKE_SYSTEM_PROCESSOR ---------------------- -The name of the CPU CMake is building for. +When not cross-compiling, this variable has the same value as the +:variable:`CMAKE_HOST_SYSTEM_PROCESSOR` variable. In many cases, +this will correspond to the target architecture for the build, but +this is not guaranteed. (E.g. on Windows, the host may be ``AMD64`` +even when using a MSVC ``cl`` compiler with a 32-bit target.) -This variable is the same as :variable:`CMAKE_HOST_SYSTEM_PROCESSOR` if -you build for the host system instead of the target system when -cross compiling. +When cross-compiling, a :variable:`CMAKE_TOOLCHAIN_FILE` should set +the ``CMAKE_SYSTEM_PROCESSOR`` variable to match target architecture +that it specifies (via :variable:`CMAKE_<LANG>_COMPILER` and perhaps +:variable:`CMAKE_<LANG>_COMPILER_TARGET`). |