IVGCVSW-6296 Add -Wno-psabi to GCC flags

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: I4f9800e53b80a836ab6fa0ee3bb5643ce8d7181b
diff --git a/cmake/GlobalConfig.cmake b/cmake/GlobalConfig.cmake
index cad2202..ef18ed0 100644
--- a/cmake/GlobalConfig.cmake
+++ b/cmake/GlobalConfig.cmake
@@ -67,6 +67,9 @@
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 if(COMPILER_IS_GNU_LIKE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall -Wextra -Werror -Wold-style-cast -Wno-missing-braces -Wconversion -Wsign-conversion")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}  -Wno-psabi")
+    endif()
 elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC)
 	# Disable C4996 (use of deprecated identifier) due to https://developercommunity.visualstudio.com/content/problem/252574/deprecated-compilation-warning-for-virtual-overrid.html
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /MP /wd4996")