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| author | Simon Marchi <simon.marchi@polymtl.ca> | 2021-04-21 14:51:10 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2021-04-21 19:48:35 -0400 |
| commit | 1f195bc327c5760d34fa571a758496900b48456c (patch) | |
| tree | 8a000c68cc54838a3e959297dce971827735e08e /sim/m4 | |
| parent | 7e7a35fbca94c5bfe45781067c75671ba508a0c8 (diff) | |
| download | gdb-1f195bc327c5760d34fa571a758496900b48456c.zip gdb-1f195bc327c5760d34fa571a758496900b48456c.tar.gz gdb-1f195bc327c5760d34fa571a758496900b48456c.tar.bz2 | |
sim: use -Werror when probing for supported warning flags
When building with clang, we get:
error: unknown warning option '-Wmissing-parameter-type' [-Werror,-Wunknown-warning-option]
This is because clang only warns by default when encountering an unknown
warning option, and the probe for supported warning flags is done
without -Werror. All flags are therefore accepted by configure, but
then it breaks when actually compiling a source file with -Werror.
This is equivalent to this commit in gdb:
3e019bdc20eb81b91ab5bc774386201b874c0bac
gdb: Use -Werror when checking for (un)supported warning flags
We then see some other compilation errors when building with clang and
-Werror, they can be dealt with later.
Diffstat (limited to 'sim/m4')
| -rw-r--r-- | sim/m4/sim_ac_option_warnings.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sim/m4/sim_ac_option_warnings.m4 b/sim/m4/sim_ac_option_warnings.m4 index dc98370..c831fa8 100644 --- a/sim/m4/sim_ac_option_warnings.m4 +++ b/sim/m4/sim_ac_option_warnings.m4 @@ -91,7 +91,7 @@ then -Werr*) WERROR_CFLAGS=-Werror ;; *) # Check that GCC accepts it saved_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $w" + CFLAGS="$CFLAGS -Werror $w" AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",) CFLAGS="$saved_CFLAGS" esac |