From 04ff8b5b6a5e8b940d1535a1302e47e2f6a0377c Mon Sep 17 00:00:00 2001
From: Kevin Funk <kevin.funk@kdab.com>
Date: Mon, 11 Feb 2019 00:20:34 +0100
Subject: [PATCH] cmake: Do not rerun try_compile invocations

Change-Id: I5eccf9f810d7ee55a311884bd5cf483f8086bae6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 cmake/QtFeature.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/QtFeature.cmake b/cmake/QtFeature.cmake
index f13f8d477a..7a0df69f9f 100644
--- a/cmake/QtFeature.cmake
+++ b/cmake/QtFeature.cmake
@@ -396,6 +396,10 @@ endfunction()
 
 function(qt_config_compile_test_x86simd extension label)
     string(TOUPPER ${extension} extension_uppercase)
+    if (DEFINED TEST_X86SIMD_${extension})
+        return()
+    endif()
+
     try_compile(TEST_X86SIMD_${extension} "${CMAKE_CURRENT_BINARY_DIR}"
         "${CMAKE_CURRENT_SOURCE_DIR}/config.tests/x86_simd/main.cpp"
         COMPILE_DEFINITIONS -DQT_COMPILER_SUPPORTS_${extension_uppercase}