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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.223.110; envelope-from=alxndr@bu.edu; helo=NAM11-DM6-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/09 18:05:40 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.768, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander Bulekov , pbonzini@redhat.com, bsd@redhat.com, stefanha@redhat.com, darren.kenny@oracle.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @bushare.onmicrosoft.com) Content-Type: text/plain; charset="utf-8" The order of the add_project_link_arguments calls impacts which arguments are placed between --start-group and --end-group. OSS-Fuzz coverage builds seem to just add these to CFLAGS: -fprofile-instr-generate -fcoverage-mapping pthread -Wl,--no-as-needed --Wl,-ldl -Wl,-lm Wno-unused-command-line-argument for some reason that is enough to shift the fork_fuzz.ld linker-script back into the linker group. Move the linker-script meson call before the other calls to mitigate this. Signed-off-by: Alexander Bulekov --- meson.build | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) Good news! Standard oss-fuzz builds are working again: https://oss-fuzz-build-logs.storage.googleapis.com/log-2fa5122f-c98c-4e46-b= 3ff-e6835d9ecda6.txt Bad news: Coverage builds are still-broken: https://oss-fuzz-build-logs.storage.googleapis.com/log-dafece55-81f2-4d1d-a= 686-c5197cdd15c1.txt For some reason, just switching around the order of the add_project_arguments fixes this (i.e. the order of the calls impacts which arguments are placed between --start-group --end-group). I don't really like this because it makes this linker-script block even more visible in meson.build, by placing it directly beneath the "Compiler flags" heading. Paolo, do you have a better suggestion? diff --git a/meson.build b/meson.build index 5421eca66a..2ba1823ca3 100644 --- a/meson.build +++ b/meson.build @@ -49,6 +49,14 @@ configure_file(input: files('scripts/ninjatool.py'), # Compiler flags # ################## =20 +# Specify linker-script with add_project_link_arguments so that it is not = placed +# within a linker --start-group/--end-group pair +if 'CONFIG_FUZZ' in config_host + add_project_link_arguments(['-Wl,-T,', + (meson.current_source_dir() / 'tests/qtest/= fuzz/fork_fuzz.ld')], + native: false, language: ['c', 'cpp', 'objc'= ]) +endif + add_project_arguments(config_host['QEMU_CFLAGS'].split(), native: false, language: ['c', 'objc']) add_project_arguments(config_host['QEMU_CXXFLAGS'].split(), @@ -58,13 +66,6 @@ add_project_link_arguments(config_host['QEMU_LDFLAGS'].s= plit(), add_project_arguments(config_host['QEMU_INCLUDES'].split(), language: ['c', 'cpp', 'objc']) =20 -# Specify linker-script with add_project_link_arguments so that it is not = placed -# within a linker --start-group/--end-group pair -if 'CONFIG_FUZZ' in config_host - add_project_link_arguments(['-Wl,-T,', - (meson.current_source_dir() / 'tests/qtest/= fuzz/fork_fuzz.ld')], - native: false, language: ['c', 'cpp', 'objc'= ]) -endif =20 link_language =3D meson.get_external_property('link_language', 'cpp') if link_language =3D=3D 'cpp' --=20 2.28.0