pytorch

7524699d - Modify clang code coverage to CMakeList.txt (for MacOS) (#42837)

Modify clang code coverage to CMakeList.txt (for MacOS) (#42837) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/42837 Originally we use ``` list(APPEND CMAKE_C_FLAGS -fprofile-instr-generate -fcoverage-mapping) list(APPEND CMAKE_CXX_FLAGS -fprofile-instr-generate -fcoverage-mapping) ``` But when compile project on mac with Coverage On, it has the error: `clang: error: no input files /bin/sh: -fprofile-instr-generate: command not found /bin/sh: -fcoverage-mapping: command not found` The reason behind it, is `list(APPEND CMAKE_CXX_FLAGS` will add an additional `;` to the variable. This means, if we do `list(APPEND foo a)` and then `list(APPEND foo b)`, then `foo` will be `a;b` -- with the additional `;`. Since we have `CMAKE_CXX_FLAGS` defined before in the `CMakeList.txt`, we can only use `set(...)` here After changing it to ``` set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-instr-generate -fcoverage-mapping") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-instr-generate -fcoverage-mapping") ``` Test successufully in local mac machine. Test Plan: Test locally on mac machine Reviewed By: malfet Differential Revision: D23043057 fbshipit-source-id: ff6f4891b35b7f005861ee2f8e4c550c997fe961