Index: llvm/utils/gn/build/BUILD.gn =================================================================== --- llvm/utils/gn/build/BUILD.gn +++ llvm/utils/gn/build/BUILD.gn @@ -93,12 +93,27 @@ "-Wextra", ] } - cflags += [ - "-Wno-unused-parameter", - "-Wstring-conversion", - ] + cflags += [ "-Wno-unused-parameter" ] if (is_clang) { - cflags += [ "-Wdelete-non-virtual-dtor" ] + cflags += [ + "-Wdelete-non-virtual-dtor", + "-Wstring-conversion", + ] + } else { + cflags += [ + # GCC's -Wcomment complains about // comments ending with '\' if the + # next line is also a // comment. + "-Wno-comment", + + # Disable gcc's potentially uninitialized use analysis as it presents + # lots of false positives. + "-Wno-maybe-uninitialized", + ] + cflags_cc += [ + # The LLVM libraries have no stable C++ API, so -Wnoexcept-type is not + # useful. + "-Wno-noexcept-type", + ] } if (is_clang && use_goma) { # goma converts all paths to lowercase on the server, breaking this @@ -135,6 +150,9 @@ } config("clang_code") { + if (host_os != "win") { + cflags = [ "-fno-strict-aliasing" ] + } include_dirs = [ "//clang/include", "$root_gen_dir/clang/include",