Check compiler flags before using (#1403)

* Check compiler flags before using

The user's compiler may not support these flags, so check.
Resolves failures on Fedora.
Signed-off-by: Tom Rix <trix@redhat.com>

* fix syntax CMakeLists.txt

Fix syntax in the check_cxx_compiler_flag.

---------
Signed-off-by: Tom Rix <trix@redhat.com>
Co-authored-by: Tom Rix <trix@redhat.com>
Co-authored-by: Illia Silin <98187287+illsilin@users.noreply.github.com>

CMakeLists.txt

@@ -191,12 +191,18 @@ endif()
 configure_file(include/ck/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/include/ck/config.h)
 
 if(NOT WIN32 AND ${hip_VERSION_FLAT} GREATER 500723302)
-   message("Adding the fno-offload-uniform-block compiler flag")
-   add_compile_options(-fno-offload-uniform-block)
+  check_cxx_compiler_flag("-fno-offload-uniform-block" HAS_NO_OFFLOAD_UNIFORM_BLOCK)
+  if(HAS_NO_OFFLOAD_UNIFORM_BLOCK)
+    message("Adding the fno-offload-uniform-block compiler flag")
+    add_compile_options(-fno-offload-uniform-block)
+  endif()
 endif()
 if(NOT WIN32 AND ${hip_VERSION_FLAT} GREATER 600140090)
-   message("Adding the enable-post-misched=0 compiler flag")
-   add_compile_options("SHELL: -mllvm -enable-post-misched=0")
+  check_cxx_compiler_flag("-mllvm -enable-post-misched=0" HAS_ENABLE_POST_MISCHED)
+  if(HAS_ENABLE_POST_MISCHED)
+    message("Adding the enable-post-misched=0 compiler flag")
+    add_compile_options("SHELL: -mllvm -enable-post-misched=0")
+  endif()
 endif()
 set(check-coerce)
 check_cxx_compiler_flag(" -mllvm -amdgpu-coerce-illegal-types=1" check-coerce)