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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-03-31 16:41:36 +0900 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2014-03-31 22:47:16 +0200 |
| commit | 1c9e70a55b088d97a59241744fe459409d0c3582 (patch) | |
| tree | bcb49fb8471c641d8d321c1af9d4e82d349f6998 | |
| parent | a03fcb50e816a69acffb13b5e56db75063aeba8a (diff) | |
| download | lwn-1c9e70a55b088d97a59241744fe459409d0c3582.tar.gz lwn-1c9e70a55b088d97a59241744fe459409d0c3582.zip | |
kbuild: create a build directory automatically for out-of-tree build
Kbuild supports saving output files in a separate directory.
But the build directory must be created beforehand. For example,
$ mkdir -p dir/to/store/output/files
$ make O=dir/to/store/output/files defconfig
Creating a build directory automatically would be useful.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
| -rw-r--r-- | Makefile | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -120,9 +120,10 @@ ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) -KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) +KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ + && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ - $(error output directory "$(saved-output)" does not exist)) + $(error failed to create output directory "$(saved-output)")) PHONY += $(MAKECMDGOALS) sub-make |