After updating linux headers to v6.0-rc, clang build on x86 target would
generate warnings like:
target/i386/kvm/kvm.c:470:25: error: field 'info' with variable sized
type 'struct kvm_msrs' not at the end of a struct or class is a GNU
extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
struct kvm_msrs info;
^
target/i386/kvm/kvm.c:1701:27: error: field 'cpuid' with variable sized
type 'struct kvm_cpuid2' not at the end of a struct or class is a GNU
extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
struct kvm_cpuid2 cpuid;
^
target/i386/kvm/kvm.c:2868:25: error: field 'info' with variable sized
type 'struct kvm_msrs' not at the end of a struct or class is a GNU
extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
struct kvm_msrs info;
^
Considering that it is OK to use GNU extension in QEMU (e.g. g_auto stuff),
it is acceptable to turn off this warning, which is only relevant to people
striving for fully portable C code.
Suggested-by: Daniel P. Berrangé <berra...@redhat.com>
Signed-off-by: Chenyi Qiang <chenyi.qi...@intel.com>
---
configure | 1 +
1 file changed, 1 insertion(+)
diff --git a/configure b/configure
index 575dde1c1f..7e0a1a4187 100755
--- a/configure
+++ b/configure
@@ -1258,6 +1258,7 @@ add_to nowarn_flags -Wno-string-plus-int
add_to nowarn_flags -Wno-typedef-redefinition
add_to nowarn_flags -Wno-tautological-type-limit-compare
add_to nowarn_flags -Wno-psabi
+add_to nowarn_flags -Wno-gnu-variable-sized-type-not-at-end
gcc_flags="$warn_flags $nowarn_flags"
--
2.17.1
