[Bf-blender-cvs] [a5b2aa96e4a] blender-v2.90-release: CMake: reject older GCC version when using precompiled Linux libraries

[Sybren A. Stüvel]

Commit: a5b2aa96e4a72b9270462a59d6317a0659e8c6e2
Author: Sybren A. Stüvel
Date:   Mon Jul 27 17:29:13 2020 +0200
Branches: blender-v2.90-release
https://developer.blender.org/rBa5b2aa96e4a72b9270462a59d6317a0659e8c6e2

CMake: reject older GCC version when using precompiled Linux libraries

In the situation where the precompiled libraries are used on Linux +
GCC, a version of GCC older than 9.3 is guaranteed to cause problems.

This just implents a fatal error message when we know it doesn't make
sense to continue. We could do more checks and add some warnings, but
it's very likely that these will be ignored amongst the other noise.

Reviewed By: sergey, brecht

Differential Revision: https://developer.blender.org/D8396

===================================================================

M	build_files/cmake/platform/platform_unix.cmake

===================================================================

diff --git a/build_files/cmake/platform/platform_unix.cmake b/build_files/cmake/platform/platform_unix.cmake
index 96244b65f21..c5e8893424b 100644
--- a/build_files/cmake/platform/platform_unix.cmake
+++ b/build_files/cmake/platform/platform_unix.cmake
@@ -36,6 +36,11 @@ if(NOT DEFINED LIBDIR)
   elseif(EXISTS ${LIBDIR_CENTOS7_ABI})
     set(LIBDIR ${LIBDIR_CENTOS7_ABI})
     set(WITH_CXX11_ABI OFF)
+
+    if(CMAKE_COMPILER_IS_GNUCC AND
+       CMAKE_C_COMPILER_VERSION VERSION_LESS 9.3)
+      message(FATAL_ERROR "GCC version must be at least 9.3 for precompiled libraries, found ${CMAKE_C_COMPILER_VERSION}")
+    endif()
   endif()
 
   # Avoid namespace pollustion.