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Fri, 12 Apr 2024 01:02:37 -0700 (PDT) X-Google-Smtp-Source: AGHT+IErYet4bg0RW0ZUFW5vbK0hieqtx589Pl3BQxJEIVNRcGIFWcxktt9Y+3yogZ4bLyEvdBLGIQ== X-Received: by 2002:a17:906:5fc2:b0:a51:ae51:5206 with SMTP id k2-20020a1709065fc200b00a51ae515206mr1062236ejv.42.1712908957125; Fri, 12 Apr 2024 01:02:37 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Matheus Tavares Bernardino Subject: [PATCH v2] Makefile: fix use of -j without an argument Date: Fri, 12 Apr 2024 10:02:35 +0200 Message-ID: <20240412080235.11478-1-pbonzini@redhat.com> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -45 X-Spam_score: -4.6 X-Spam_bar: ---- X-Spam_report: (-4.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.49, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1712909031925100001 Content-Type: text/plain; charset="utf-8" From: Matheus Tavares Bernardino Our Makefile massages the given make arguments to invoke ninja accordingly. One key difference is that ninja will parallelize by default, whereas make only does so with -j or -j. The make man page says that "if the -j option is given without an argument, make will not limit the number of jobs that can run simultaneously". We use to support that by replacing -j with "" (empty string) when calling ninja, so that it would do its auto-parallelization based on the number of CPU cores. This was accidentally broken at d1ce2cc95b (Makefile: preserve --jobserver-auth argument when calling ninja, 2024-04-02), causing `make -j` to fail: $ make -j V=3D1 /usr/bin/ninja -v -j -d keepdepfile all | cat make -C contrib/plugins/ V=3D"1" TARGET_DIR=3D"contrib/plugins/" all ninja: fatal: invalid -j parameter make: *** [Makefile:161: run-ninja] Error Let's fix that and indent the touched code for better readability. Signed-off-by: Matheus Tavares Bernardino Fixes: d1ce2cc95b ("Makefile: preserve --jobserver-auth argument when calli= ng ninja", 2024-04-02) Signed-off-by: Paolo Bonzini --- Makefile | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 183756018ff..02a257584ba 100644 --- a/Makefile +++ b/Makefile @@ -141,8 +141,13 @@ MAKE.n =3D $(findstring n,$(firstword $(filter-out --%= ,$(MAKEFLAGS)))) MAKE.k =3D $(findstring k,$(firstword $(filter-out --%,$(MAKEFLAGS)))) MAKE.q =3D $(findstring q,$(firstword $(filter-out --%,$(MAKEFLAGS)))) MAKE.nq =3D $(if $(word 2, $(MAKE.n) $(MAKE.q)),nq) -NINJAFLAGS =3D $(if $V,-v) $(if $(MAKE.n), -n) $(if $(MAKE.k), -k0) \ - $(or $(filter -l% -j%, $(MAKEFLAGS)), $(if $(filter --jobserver-au= th=3D%, $(MAKEFLAGS)),, -j1)) \ +NINJAFLAGS =3D \ + $(if $V,-v) \ + $(if $(MAKE.n), -n) \ + $(if $(MAKE.k), -k0) \ + $(filter-out -j, \ + $(or $(filter -l% -j%, $(MAKEFLAGS)), \ + $(if $(filter --jobserver-auth=3D%, $(MAKEFLAGS)),, -j1))) \ -d keepdepfile ninja-cmd-goals =3D $(or $(MAKECMDGOALS), all) ninja-cmd-goals +=3D $(foreach g, $(MAKECMDGOALS), $(.ninja-goals.$g)) --=20 2.44.0