diff options
| author | Ben Chan <benchan@chromium.org> | 2019-04-03 10:44:57 -0700 |
|---|---|---|
| committer | Aleksander Morgado <aleksander@gnu.org> | 2019-04-05 08:02:14 +0000 |
| commit | 9dac5ece77ef75ace284a0b3145f06feb099d0f9 (patch) | |
| tree | d6c6f05b17ae3bc9819d013ae9f1da2bb55dd997 | |
| parent | 7f78ef50100f7f125ddcd47a721676d80e86d1fe (diff) | |
build: make compiler warning options compatible with clang
This patch updates m4/compiler-warnings.m4 as follows to make it more
compatible with clang:
* clang doesn't support -Wunused-but-set-variable, which can be replaced
with -Wunused-variable as the latter covers unused variables with or
without an assigned value and is supported by gcc and clang.
* -Wno-unused-function is added to let clang ignore unused functions that
are auto-generated.
| -rw-r--r-- | m4/compiler_warnings.m4 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/m4/compiler_warnings.m4 b/m4/compiler_warnings.m4 index 2a682684..35d005c2 100644 --- a/m4/compiler_warnings.m4 +++ b/m4/compiler_warnings.m4 @@ -10,8 +10,8 @@ if test "$GCC" = "yes" -a "$set_more_warnings" != "no"; then for option in -Wmissing-declarations -Wmissing-prototypes \ -Wdeclaration-after-statement -Wstrict-prototypes \ -Wno-unused-parameter -Wno-sign-compare \ - -Wno-deprecated-declarations \ - -Wunused-but-set-variable -Wformat-security; do + -Wno-deprecated-declarations -Wno-unused-function \ + -Wunused-variable -Wformat-security; do SAVE_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $option -Werror" AC_MSG_CHECKING([whether gcc understands $option]) |