From cbc41973fde6137bc42c34de64a41b5a82b597c0 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Fri, 30 Jul 2021 14:20:12 +0200
Subject: [PATCH] Disable gfortran tree vectorizer to avoid gcc11+
 miscompilation at O3

---
 ctest/CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ctest/CMakeLists.txt b/ctest/CMakeLists.txt
index 17f29fe69..f785d3f90 100644
--- a/ctest/CMakeLists.txt
+++ b/ctest/CMakeLists.txt
@@ -4,6 +4,9 @@ include_directories(${PROJECT_BINARY_DIR})
 enable_language(Fortran)
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DADD${BU} -DCBLAS")
+if (CMAKE_Fortran_COMPILER_ID STREQUAL GNU)
+	set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fno-tree-vectorize")
+endif()
 
 if(WIN32)
 FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/test_cblas_helper.ps1