Fix of build errors for Debian Stretch

[joede]

Since I have to start using STM32 MCUs, I've built Debian packages out of your sources. There were some errors which I have fixed. As a result of these fixes, I have working Debian packages which I can install. I haven't had the time and hardware to test the code!

This PR should fix the issue #700.

Note: the entry in debian/Changelog is not what you need. ;-)

[slyshykO]

I try to fix #700 in #701.
Can you check it?

[joede]

@slyshykO doesn't work for me here with Debian 9! IMO the debian/*.install files are wrong.

   dh_install -O--buildsystem=cmake
dh_install: Cannot find (any matches for) "usr/lib/*/lib*.a" (tried in "." and "debian/tmp")
dh_install: libstlink-dev missing files: usr/lib/*/lib*.a
dh_install: Cannot find (any matches for) "usr/lib/*/pkgconfig/*" (tried in "." and "debian/tmp")
dh_install: libstlink-dev missing files: usr/lib/*/pkgconfig/*
dh_install: Cannot find (any matches for) "usr/lib/*/lib*.so" (tried in "." and "debian/tmp")
dh_install: libstlink-dev missing files: usr/lib/*/lib*.so
dh_install: Cannot find (any matches for) "usr/lib/*/lib*.so.*" (tried in "." and "debian/tmp")
dh_install: libstlink1 missing files: usr/lib/*/lib*.so.*
dh_install: missing files, aborting
debian/rules:14: die Regel für Ziel „binary“ scheiterte

[bluca]

Sorry but these changes are wrong, they break multiarch - it's the cmake option passed in d/rules that needs changing

[joede]

@bluca what does you mean with "break multiarch"?

[bluca]

See section 9.1.1.4 of the Policy: https://www.debian.org/doc/debian-policy/

[joede]

@bluca thanks for the link. So the CMake system must be configured to use "/usr/lib/triplet" (i.e. /usr/lib/x86_64-linux-gnu) instead of the "deprecated" /usr/lib?

[bluca]

See #701 (comment)

[xor-gate]

Not sure but after merge of #701 this PR should not be necessary anymore. @joede could you verify?

[joede]

@xor-gate yes, it's obsolete now. Sorry, I've forgotten to close it.

[xor-gate]

No problem, thanks for the effort.