Allow passing additional flags to obara saika host compilation

Helps with NVHPC segfault

src/xc_integrator/local_work_driver/host/obara_saika/CMakeLists.txt

@@ -29,6 +29,16 @@ set( GAUXC_OBARA_SAIKA_HOST_SRC
      src/obara_saika_integrals.cxx
      src/chebyshev_boys_computation.cxx
 )
+
+# This is required for compilation with NVHPC as it crashes with the O3 optimization flag
+if (DEFINED GAUXC_OBARA_SAIKA_COMPILE_OPTIMIZATION_OPTIONS)
+    foreach (flag "[\\/\\-]O3" "[\\/\\-]Ofast" "[\\/\\-]fast")
+        string(REGEX REPLACE ${flag} ${GAUXC_OBARA_SAIKA_COMPILE_OPTIMIZATION_OPTIONS} CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
+    endforeach()
+    message("Setting Obara-Saika CMAKE_CXX_FLAGS_RELEASE to: ${CMAKE_CXX_FLAGS_RELEASE}")
+endif()
+
+
 target_sources( gauxc PRIVATE ${GAUXC_OBARA_SAIKA_HOST_SRC} )
 target_include_directories( gauxc PUBLIC
   $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>