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configure: Add -Wno-psabi

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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>
This commit is contained in:
Richard Henderson 2020-06-17 13:13:08 -07:00 committed by Peter Maydell
parent aabab96797
commit bac8d222a1
2 changed files with 2 additions and 1 deletions
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1
configure vendored
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@ -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-string-plus-int
add_to nowarn_flags -Wno-typedef-redefinition add_to nowarn_flags -Wno-typedef-redefinition
add_to nowarn_flags -Wno-tautological-type-limit-compare add_to nowarn_flags -Wno-tautological-type-limit-compare
add_to nowarn_flags -Wno-psabi
gcc_flags="$warn_flags $nowarn_flags" gcc_flags="$warn_flags $nowarn_flags"

2
tests/plugin/Makefile
View File

@ -17,7 +17,7 @@ NAMES += lockstep
SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES))) SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES)))
QEMU_CFLAGS += -fPIC QEMU_CFLAGS += -fPIC -Wpsabi
QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu
all: $(SONAMES) all: $(SONAMES)