Re: Static Build on armv7

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 3/30/22 07:15, Florian Feldbauer via Tech-talk wrote:
> Hey all,
>
> we use docker images to easily deploy our IOCs for our detector control system.
> The images are build for amd64, arm64/aarch64 and armv7.
>
> To reduce the size of those images, I recently switched from dynamic to static linking by adding the line
>  >      && echo "STATIC_BUILD=YES" >> configure/CONFIG_SITE.local \
> to our Dockerfile.
>
> When compiling base7 for amd64 and aarch64 this is working just fine, but I get an error on arm/v7:
>
> > #0 189.7 Installing created executable /epics/base/bin/linux-arm/antelope
> > #0 190.1 /epics/base/bin/linux-arm/antelope -bparse -l -d ../flex/parse.y
> > #0 190.1 /usr/lib/ld.so.1: No such file or directory
> > #0 198.7 Expanding ../libComVersion.h@ to ../O.Common/libComVersion.h
>
> I investigated the issue a bit closer and found the following:
>
> > root@195e454a8580:/epics/src/base# ldd /epics/base/bin/linux-arm/antelope
> >   linux-vdso.so.1 (0x7ef10000)
> >   libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x76e71000)
> >   /usr/lib/ld.so.1 => /lib/ld-linux-armhf.so.3 (0x76f70000)

It looks like "STATIC_BUILD=YES" was ignored.

> > root@195e454a8580:/epics/src/base# ls /usr/lib/ld.so.1
> > ls: cannot access '/usr/lib/ld.so.1': No such file or directory
>
> For some reason antelope gets linked against /usr/lib/ld.so.1 on armv7 but this file does not exist.
> Does anyone know what causes this issue?

It would help if you could attach, or post somewhat, the complete
output of a clean 'make'.

Also the output of:

> readelf -aW /epics/base/bin/linux-arm/antelope



> Cheers,
> Florian