On Thu, Apr 11, 2019 at 11:33 PM Steve Sistare
<steven.sistare@xxxxxxxxxx> wrote:
>
> "make -j 16 modules modules_install" allows both targets to run concurrently
> and produces warnings and incorrect results in the install area. Force
> them to be run serially, the same way that "install modules_install" is
> already seralized.
Probably you know many projects are
configured, compiled, and installed
in the following 3 steps:
$ ./configure
$ make
$ make install
I have never seen instruction like this:
$ ./configure
$ make -j8 all install
Compile and install are separate steps, one reason is
"make install" is quite often run under the root privilege
in order to copy files to /usr/ or /usr/local/.
Following the same logic, Kbuild does not support
the simultaneous compile & installation.
(Please note the default install location of modules is
/lib/modules/$(uname -r)/, which needs root permission for write.)
For the same reason, we do not support
"make -j8 vmlinux install"
or
"make -j8 dtbs dtbs_install".
> Signed-off-by: Steve Sistare <steven.sistare@xxxxxxxxxx>
> ---
> Makefile | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index 026fbc4..4988dcc 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -291,9 +291,11 @@ ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
> endif
> endif
>
> -# install and modules_install need also be processed one by one
> -ifneq ($(filter install,$(MAKECMDGOALS)),)
> - ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
> +# modules_install and {install or modules} need to be processed one by one
> +ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
> + ifneq ($(filter install,$(MAKECMDGOALS)),)
> + mixed-targets := 1
> + else ifneq ($(filter modules,$(MAKECMDGOALS)),)
> mixed-targets := 1
> endif
> endif
> --
> 1.8.3.1
>
--
Best Regards
Masahiro Yamada
