After b4f7793ce269, qemuxml2xmltest has apparently become big enough
to trigger a compilation error on aarch64:
CC qemuxml2xmltest.o
qemuxml2xmltest.c: In function 'mymain':
qemuxml2xmltest.c:1216:1: error: const/copy propagation disabled: 4361 basic blocks and 99285 registers [-Werror=disabled-optimization]
}
^
qemuxml2xmltest.c:1216:1: error: PRE disabled: 4361 basic blocks and 99285 registers [-Werror=disabled-optimization]
qemuxml2xmltest.c:1216:1: error: const/copy propagation disabled: 4361 basic blocks and 99285 registers [-Werror=disabled-optimization]
qemuxml2xmltest.c:1216:1: error: const/copy propagation disabled: 4361 basic blocks and 99285 registers [-Werror=disabled-optimization]
However, as the GCC documentation states, this warning is not really
caused by issues in our code, so it makes sense to disable it.
Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>
---
m4/virt-compile-warnings.m4 | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
index e8f135126..f18a08a8f 100644
--- a/m4/virt-compile-warnings.m4
+++ b/m4/virt-compile-warnings.m4
@@ -64,6 +64,11 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
# Several conditionals expand the same on both branches
# depending on the particular platform/architecture
dontwarn="$dontwarn -Wduplicated-branches"
+ # > This warning does not generally indicate that there is anything wrong
+ # > with your code; it merely indicates that GCC's optimizers are unable
+ # > to handle the code effectively.
+ # Source: https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
+ dontwarn="$dontwarn -Wdisabled-optimization"
# gcc 4.2 treats attribute(format) as an implicit attribute(nonnull),
# which triggers spurious warnings for our usage
--
2.13.5
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