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authorMasahiro Yamada <masahiroy@kernel.org>2023-07-22 13:47:55 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2023-07-25 00:59:32 +0900
commit76a48b8ffbad5cb24ce3fab517a24f555b3c9616 (patch)
treee537cc7991bca5f2f772b9f2f82b0b05f22f3ba1 /Makefile
parent93ed5605c6185edf3b47c433b257c00854f0a4e1 (diff)
downloadlwn-76a48b8ffbad5cb24ce3fab517a24f555b3c9616.tar.gz
lwn-76a48b8ffbad5cb24ce3fab517a24f555b3c9616.zip
kbuild: add a phony target to run a command with Kbuild env vars
There are some cases where we want to run a command with the same environment variables as Kbuild uses. For example, 'make coccicheck' invokes scripts/coccicheck from the top Makefile so that the script can reference to ${LINUXINCLUDE}, ${KBUILD_EXTMOD}, etc. The top Makefile defines several phony targets that run a script. We do it also for an internally used script, which results in a somewhat complex call graph. One example: debian/rules binary-arch -> make intdeb-pkg -> scripts/package/builddeb It is also tedious to add a dedicated target like 'intdeb-pkg' for each use case. Add a generic target 'run-command' to run an arbitrary command in an environment with all Kbuild variables set. The usage is: $ make run-command KBUILD_RUN_COMMAND=<command> The concept is similar to: $ dpkg-architecture -c <command> This executes <command> in an environment which has all DEB_* variables defined. Convert the existing 'make intdeb-pkg'. Another possible usage is to interrogate a Make variable. $ make run-command KBUILD_RUN_COMMAND='echo $(KBUILD_CFLAGS)' might be useful to see KBUILD_CFLAGS set by the top Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index d36e5361810f..8533ba64713c 100644
--- a/Makefile
+++ b/Makefile
@@ -2148,6 +2148,10 @@ kernelversion:
image_name:
@echo $(KBUILD_IMAGE)
+PHONY += run-command
+run-command:
+ $(Q)$(KBUILD_RUN_COMMAND)
+
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
cmd_rmfiles = rm -rf $(rm-files)