[Buildroot] [PATCH 1/1] package/dhcp: specify host-gawk path for dhcp build environment

[Thomas Petazzoni]

Hello Sergey,

On Sat, 12 Sep 2020 23:01:14 +0300
Sergey Matyukevich <geomatsi at gmail.com> wrote:

> But what were the files installed in your tests? Did you see dhcpd and
> dhclient amount installed files in output/target ?

Yes, both dhcpd and dhclient are installed in output/target. I'm
attaching to this e-mail the list of files that were installed when
building with awk==mawk and awk==gawk.

> I still can reproduce the issue. The procedure is similar to yours. I
> enable both client and server for isc-dhcp in the board config. Finally,
> I do not have both dhcpd and dhclient in output/target if I do not have
> gawk installed on my build server. Moreover, in this case the following
> warnings appear in the end of dhcp build log:
> 
> bin/sh: line 19: gawk: command not found
> 
> Such warning are emitted by DHCP_INSTALL_SERVER and DHCP_INSTALL_CLIENT
> commands from dhcp.mk. The same result can be reproduced manually:
> 
> $ make -C /home/matsi/devel/code/buildroot/buildroot-release/output/build/dhcp-4.4.1/server DESTDIR=/home/matsi/devel/code/buildroot/buildroot-release/output/target install-sbinPROGRAMS         
> make: Entering directory '/home/matsi/devel/code/buildroot/buildroot-release/output/build/dhcp-4.4.1/server'
>  /usr/bin/mkdir -p  '/home/matsi/devel/code/buildroot/buildroot-release/output/target/usr/sbin'
> /bin/sh: line 19: gawk: command not found
> make: Leaving directory '/home/matsi/devel/code/buildroot/buildroot-release/output/build/dhcp-4.4.1/server'
> 
> What exactly goes on can be figured out using '-n' make option.
> Makefiles for isc-dhcp components use $(AWK) which is properly
> detected by configure script. It can any of gawk, mawk, nawk, awk.
> However in generated Makefiles that tool is used without specific 
> path. As a result, *awk tool can be available in buildroot build
> environment, but missing on the build server.

I've posted at https://paste.ack.tf/52f197@raw the full build of my
Buildroot configuration, which has just BR2_PACKAGE_DHCP=y + client +
server. awk is really mawk:

checking for gawk... no
checking for mawk... mawk

Both dhpcd and dhclient are installed:

$ find target/ -name 'dhcpd' -o -name 'dhclient'
target/usr/sbin/dhcpd
target/sbin/dhclient

I have this version of mawk installed:

ii  mawk                       1.3.3-17+b3                    amd64        a pattern scanning and text processing language

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com