File evpath-link-m.patch of Package adios2

diff -Nur ADIOS2-2.7.1-orig/thirdparty/EVPath/EVPath/CMakeLists.txt ADIOS2-2.7.1/thirdparty/EVPath/EVPath/CMakeLists.txt
--- ADIOS2-2.7.1-orig/thirdparty/EVPath/EVPath/CMakeLists.txt	2021-08-09 15:34:29.372684443 -0400
+++ ADIOS2-2.7.1/thirdparty/EVPath/EVPath/CMakeLists.txt	2021-08-09 20:26:02.100655017 -0400
@@ -131,7 +131,8 @@ set(_pkg_config_libs)
 set(_pkg_config_private_libs)
 
 include(CheckCSourceCompiles)
+set(CMAKE_REQUIRED_FLAGS "-O0")
 set(LIBM_TEST_SOURCE "#include<math.h>\nfloat f; int main(){sqrt(f);return 0;}")
 check_c_source_compiles("${LIBM_TEST_SOURCE}" HAVE_MATH)
 if(NOT HAVE_MATH)
   set(CMAKE_REQUIRED_LIBRARIES m)