From: Vincent Mailhol <mailhol@kernel.org>
To: Nathan Chancellor <nathan@kernel.org>, Nicolas Schier <nsc@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
Vincent Mailhol <mailhol@kernel.org>
Subject: [PATCH 3/3] kbuild: move scripts/mod target out of single-build
Date: Wed, 11 Nov 2026 14:41:05 +0100 [thread overview]
Message-ID: <20261111-reduce-single-build-dependencies-v1-3-7196ca986a85@kernel.org> (raw)
In-Reply-To: <20261111-reduce-single-build-dependencies-v1-0-7196ca986a85@kernel.org>
The scripts/mod target is currently set as a preparation dependency.
However, this is not needed to compile, for example, a single object.
Add a new modpost_prepare target for scripts/mod and make in-tree
modpost and modules_prepare depend on it so that the prepare target does
not trigger that dependency anymore.
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
---
Makefile | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index 2c1289a44c56..93236f310f08 100644
--- a/Makefile
+++ b/Makefile
@@ -1405,7 +1405,7 @@ scripts: scripts_basic scripts_dtc
# archprepare is used in arch Makefiles and when processed asm symlink,
# version.h and scripts_basic is processed / created.
-PHONY += prepare archprepare
+PHONY += prepare archprepare modpost_prepare
archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
asm-generic $(version_h) include/generated/utsrelease.h \
@@ -1414,6 +1414,8 @@ archprepare: outputmakefile archheaders archscripts scripts include/config/kerne
prepare0: archprepare
$(Q)$(MAKE) $(build)=. prepare $(if $(single-build),,prepare_checks)
+
+modpost_prepare: archprepare
$(Q)$(MAKE) $(build)=scripts/mod
# All the preparing..
@@ -1765,7 +1767,7 @@ endif
modules: modules_prepare
# Target to prepare building external modules
-modules_prepare: prepare
+modules_prepare: prepare modpost_prepare
$(Q)$(MAKE) $(build)=scripts scripts/module.lds
endif # CONFIG_MODULES
@@ -2189,7 +2191,8 @@ KBUILD_MODULES :=
endif # CONFIG_MODULES
PHONY += modpost
-modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
+modpost: $(if $(KBUILD_EXTMOD),,modpost_prepare) \
+ $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
$(if $(KBUILD_MODULES), modules_check)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
--
2.56.1
prev parent reply other threads:[~2026-11-11 13:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-11 13:41 [PATCH 0/3] kbuild: reduce single-build dependencies Vincent Mailhol
2026-11-11 13:41 ` [PATCH 1/3] kbuild: make rq-offsets-file an explicit preparation dependency Vincent Mailhol
2026-11-11 13:41 ` [PATCH 2/3] kbuild: move preparation checks out of single-build Vincent Mailhol
2026-11-11 13:41 ` Vincent Mailhol [this message]
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