CMake : branch on clang version

c++, cmake

Solution

For some reason piokuc's solution doesn't work for me, so I did the following:

EXECUTE_PROCESS( COMMAND ${CMAKE_CXX_COMPILER} --version OUTPUT_VARIABLE clang_full_version_string )
string (REGEX REPLACE ".*clang version ([0-9]+\\.[0-9]+).*" "\\1" CLANG_VERSION_STRING ${clang_full_version_string})
if (CLANG_VERSION_STRING VERSION_GREATER 3.1)
     ....

Problem

How does one achieve the equivalent of the cmake branch below for clang++? ``` if (GXX_VERSION VERSION_GREATER 4.5 OR GXX_VERSION VERSION_EQUAL 4.5) ... ``` Thanks,

Original source