eiskaltdcpp: mark linux only

[LnL7]

The darwin build fails and other platforms will probably run into
similar issues.

Determining if the Q_WS_QWS exist failed with the following output:
Change Dir: /tmp/nix-build-eiskaltdcpp-2.2.10.drv-0/source/build/CMakeFiles/CMakeTmp

Run Build Command:"/nix/store/qfag24z6xsr6jkyi8gb4cv62rp945rbk-gnumake-4.2.1/bin/make" "cmTC_14e67/fast"
/nix/store/qfag24z6xsr6jkyi8gb4cv62rp945rbk-gnumake-4.2.1/bin/make -f CMakeFiles/cmTC_14e67.dir/build.make CMakeFiles/cmTC_14e67.dir/build
make[1]: Entering directory '/private/tmp/nix-build-eiskaltdcpp-2.2.10.drv-0/source/build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_14e67.dir/CheckSymbolExists.cxx.o
/nix/store/2gdwhdzhy4iwkp7fh8v6gy6nxj1zi9pv-clang-wrapper-5.0.2/bin/clang++   -I/nix/store/8dzqilmdr0p3qmmrxh51xk7wli6grm0i-qt-4.8.7/include -F/nix/store/8dzqilmdr0p3qmmrxh51xk7wli6grm0i-qt-4.8.7/lib  -std=c++0x -pipe -Wformat -Werror=format-security  -arch x86_64   -o CMakeFiles/cmTC_14e67.dir/CheckSymbolExists.cxx.o -c /tmp/nix-build-eiskaltdcpp-2.2.10.drv-0/source/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx
/tmp/nix-build-eiskaltdcpp-2.2.10.drv-0/source/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:8:19: error: use of undeclared identifier 'Q_WS_QWS'
  return ((int*)(&Q_WS_QWS))[argc];
              ^

/cc ZHF #45961

Motivation for this change

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Fits CONTRIBUTING.md.

---

[Mic92]

@GrahamcOfBorg build eiskaltdcpp

[GrahamcOfBorg]

No attempt on x86_64-darwin (full log)

The following builds were skipped because they don't evaluate on x86_64-darwin: eiskaltdcpp

Partial log (click to expand)

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowUnsupportedSystem = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowUnsupportedSystem = true; }
to ~/.config/nixpkgs/config.nix.

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: eiskaltdcpp

Partial log (click to expand)

/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/update_geoip: interpreter directive changed from "/bin/bash" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/bash"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/amr.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/sh"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mod.amarok.sh: interpreter directive changed from "/bin/bash" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/bash"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/deadbeef.ru_RU.UTF-8.sh: interpreter directive changed from "/bin/bash" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/bash"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mpc.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/sh"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/rhythmbox.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/sh"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/qmmp.ru_RU.UTF-8.sh: interpreter directive changed from "/bin/sh" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/sh"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mpris_now_playing.en_US.sh: interpreter directive changed from "/bin/bash" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/bash"
/nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/audacious.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/czx8vkrb9jdgjyz8qfksh10vrnqa723l-bash-4.4-p23/bin/sh"
checking for references to /build in /nix/store/0rpq2ijdilghp0z8wbva66vm2lka0jpy-eiskaltdcpp-2.2.10...

[GrahamcOfBorg]

Success on aarch64-linux (full log)

Attempted: eiskaltdcpp

Partial log (click to expand)

/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/update_geoip: interpreter directive changed from "/bin/bash" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/bash"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/amr.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/sh"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/audacious.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/sh"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/deadbeef.ru_RU.UTF-8.sh: interpreter directive changed from "/bin/bash" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/bash"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mod.amarok.sh: interpreter directive changed from "/bin/bash" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/bash"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mpc.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/sh"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/mpris_now_playing.en_US.sh: interpreter directive changed from "/bin/bash" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/bash"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/qmmp.ru_RU.UTF-8.sh: interpreter directive changed from "/bin/sh" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/sh"
/nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10/share/eiskaltdcpp/examples/rhythmbox.en_US.sh: interpreter directive changed from "/bin/sh" to "/nix/store/fqm2x6kiay1q4vg7pqp4wp17bdijlyc3-bash-4.4-p23/bin/sh"
checking for references to /build in /nix/store/nz1661jfm8r8454dwm2c8nkdmm1s2k9a-eiskaltdcpp-2.2.10...

[Mic92]

backport: 3cee0ce