Commit bac8d222 authored Jun 17, 2020 by Richard Henderson Committed by Peter Maydell Jun 18, 2020

configure: Add -Wno-psabi

On aarch64, gcc 9.3 is generating

qemu/exec.c: In function ‘address_space_translate_iommu’:
qemu/exec.c:431:28: note: parameter passing for argument of type \
  ‘MemTxAttrs’ {aka ‘struct MemTxAttrs’} changed in GCC 9.1

and many other repetitions.  This structure, and the functions
amongst which it is passed, are not part of a QEMU public API.
Therefore we do not care how the compiler passes the argument,
so long as the compiler is self-consistent.

The only portion of QEMU which does have a public api, and so
must have a stable abi, is "qemu/plugin.h".  We test this by
forcing -Wpsabi in tests/plugin/Makefile.

Buglink: https://bugs.launchpad.net/qemu/+bug/1881552


Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200617201309.1640952-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

parent aabab967

configure

+1 −0

Original line number	Diff line number	Diff line
		@@ -2055,6 +2055,7 @@ add_to nowarn_flags -Wno-shift-negative-value
		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

		gcc_flags="$warn_flags $nowarn_flags"

tests/plugin/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -17,7 +17,7 @@ NAMES += lockstep

		SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES)))

		QEMU_CFLAGS += -fPIC
		QEMU_CFLAGS += -fPIC -Wpsabi
		QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu

		all: $(SONAMES)