From ecb7bc9514b12051d050299234b2a74ac76b5a8e Mon Sep 17 00:00:00 2001
From: Christoph Hertzberg <chtz@informatik.uni-bremen.de>
Date: Sat, 24 Oct 2020 15:22:21 +0200
Subject: Bug #2036 make sure find_standard_math_library_test_program actually
 compiles (and is guaranteed to call math functions)

---
 cmake/FindStandardMathLibrary.cmake | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'cmake')

diff --git a/cmake/FindStandardMathLibrary.cmake b/cmake/FindStandardMathLibrary.cmake
index b174cbb4f..1d1e5b3a9 100644
--- a/cmake/FindStandardMathLibrary.cmake
+++ b/cmake/FindStandardMathLibrary.cmake
@@ -24,10 +24,8 @@ include(CheckCXXSourceCompiles)
 set(find_standard_math_library_test_program
 "
 #include<cmath>
-int main(int argc, char **argv) {
-  (void)std::sin(argc));
-  (void)std::log(argc));
-  return 0;
+int main(int argc, char **){
+  return int(std::sin(double(argc)) + std::log(double(argc)));
 }")
 
 # first try compiling/linking the test program without any linker flags
-- 
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