Hey @gclaudino.tx ,
i went back to angstrom because opkg loaded packages here at all. I then had to load more packages (gcc-symlinks, binutils, build-essential)so that gcc ran.
With it then the problems occurred, which are described under the following link.
Link
I was then shocked to find out that the solution to the problem at the end of the topic was to create a new image. But I had no desire to do so… 
So i took another linux distro for an arm mcu and copied the missing gcc files from it
to /usr/lib/gcc/arm-angstrom-linux-gnueabi/7.2.0/
Missing files:
cc1
cc1plus
collect2
crtbegin.o
crtbeginS.o
crtbeginT.o
crtend.o
crtendS.o
crtfastmath.o
Info.txt
libasan.a
libasan.so
libasan_preinit.o
libatomic.a
libatomic.so
libbacktrace.a
libcc1.so
libgcc.a
libgcc_eh.a
libgcc_s.so
libgcc_s.so.1
libgcov.a
libgomp.a
libgomp.so
libgomp.spec
liblto_plugin.so
liblto_plugin.so.0
liblto_plugin.so.0.0.0
libsanitizer.spec
libssp_nonshared.a
libstdc++.a
libstdc++.so
libstdc++fs.a
libsupc++.a
libubsan.a
libubsan.so
lto-wrapper
lto1
plugin (folder)
Sure it’s not an elegant way, but it’s easy to implement and works for fine me. 
Best reagrds
Wilhelm