Re: make clean all broken with -j? + question regarding modpost

[Thomas Meyer <thomas@m3y3r.de>]

On Sat, Aug 12, 2017 at 12:15:11PM +0900, Masahiro Yamada wrote:
> Hi.
> 
> 2017-08-11 3:28 GMT+09:00 Randy Dunlap <rdunlap@infradead.org>:
> 
> >> 2.) compile modpost with debug symbols, -g
> >> how do I compile the modpost helper program with debug symbols? In what
> >> makefile, kbuild file do I need to add the compiler flag?
> >> Any help would be appreciated!
> 
> 
> If you want to pass extra options to the build command of host-programs,
> HOST_EXTRACFLAGS is supported.
> 
> For example,  HOST_EXTRACFLAGS=-g

Yes, after reading Documentation/kbuild/makefiles.txt and studying the
top level Makefile I was able to figure it out by myself.

But many thanks for the hint!

Now I just need to find out why an UML kernel with CONFIG_GCOV fails to
build all modules. modpost abends with missing symbols
__gcov_init, etc.


with kind regards
thomas
> 
> 
> 
> 
> 
> -- 
> Best Regards
> Masahiro Yamada