Remove unnecessary non-MSVC compiler flags

Flock/CMakeLists.txt

@@ -26,8 +26,6 @@ add_subdirectory(extern)
 # Specific MSVC flags to use C++17
 if(MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std:c++17 /MP /W4")
-else()
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 endif()
 
 # Add own targets

Flock/extern/CMakeLists.txt

@@ -38,7 +38,7 @@ option(qu3e_build_demo "" OFF)
 add_subdirectory(qu3e)
 
 if (NOT MSVC)
-    # Add Intel Parralel STL
+    # Add Intel Parallel STL as a replacement for <execution>
     add_subdirectory(pstl)
 endif()