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configure: Remove probe for _Static_assert

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_Static_assert is part of C11, which is now required.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-9-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-14 16:31:43 -07:00
parent 8bae43fa1a
commit c7a7cb5692
2 changed files with 0 additions and 29 deletions
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18
configure vendored
View File

@ -5090,20 +5090,6 @@ if compile_prog "" "" ; then
have_sysmacros=yes
fi
##########################################
# check for _Static_assert()
have_static_assert=no
cat > $TMPC << EOF
_Static_assert(1, "success");
int main(void) {
return 0;
}
EOF
if compile_prog "" "" ; then
have_static_assert=yes
fi
##########################################
# check for utmpx.h, it is missing e.g. on OpenBSD
@ -6035,10 +6021,6 @@ if test "$have_sysmacros" = "yes" ; then
echo "CONFIG_SYSMACROS=y" >> $config_host_mak
fi
if test "$have_static_assert" = "yes" ; then
echo "CONFIG_STATIC_ASSERT=y" >> $config_host_mak
fi
if test "$have_utmpx" = "yes" ; then
echo "HAVE_UTMPX=y" >> $config_host_mak
fi

11
include/qemu/compiler.h
View File

@ -72,18 +72,7 @@
int:(x) ? -1 : 1; \
}
/* QEMU_BUILD_BUG_MSG() emits the message given if _Static_assert is
* supported; otherwise, it will be omitted from the compiler error
* message (but as it remains present in the source code, it can still
* be useful when debugging). */
#if defined(CONFIG_STATIC_ASSERT)
#define QEMU_BUILD_BUG_MSG(x, msg) _Static_assert(!(x), msg)
#elif defined(__COUNTER__)
#define QEMU_BUILD_BUG_MSG(x, msg) typedef QEMU_BUILD_BUG_ON_STRUCT(x) \
glue(qemu_build_bug_on__, __COUNTER__) __attribute__((unused))
#else
#define QEMU_BUILD_BUG_MSG(x, msg)
#endif
#define QEMU_BUILD_BUG_ON(x) QEMU_BUILD_BUG_MSG(x, "not expecting: " #x)