New package: wsjtx-2.0.1

[acobaugh]

Second attempt of #11790

Also had to restrict which archs this builds on. The last build errored out on the non-intel archs: https://travis-ci.org/void-linux/void-packages/builds/534087066

[jnbr]

This is not about architectures but about cross-compiling.
You can most likely fix cross-builds by fixing what goes into makedepends and what goes into hostmakedepends.

[acobaugh]

I'll have to dig into this, then. I'm on relatively slow DSL at home, so doing builds with multiple dependencies can be painful at times. Trying to find an elegant way to do this under docker so I can run the whole process on a DO droplet with a bit more horsepower and bandwidth...

[acobaugh]

There are 2 issues with cross-compiling this package:

1. wsjtx is a cmake "uber" project, with hamlib and wsjtx itself as sub-projects. I patched the parent CMakeLists.txt to set --host on the hamlib ./configure command. The patch also passes the toolchain file down to the wsjtx subproject
2. The toolchain file was overriding CMAKE_FIND_ROOT_PATH. This was preventing the wsjtx subproject from finding the previously built libraries. I've worked around this in a post_configure() by appending to the toolchain file a list(APPEND list item) to put the project's build directory back in.

I'm now running into an issue with qmake setting (I think) the wrong --isystem/-I, resulting in this error:

[ 69%] Building CXX object CMakeFiles/wsjt_qtmm.dir/Audio/BWFFile.cpp.o
In file included from /usr/aarch64-linux-gnu/usr/include/c++/8.3.0/ext/string_conversions.h:41,
                 from /usr/aarch64-linux-gnu/usr/include/c++/8.3.0/bits/basic_string.h:6400,
                 from /usr/aarch64-linux-gnu/usr/include/c++/8.3.0/string:52,
                 from /usr/aarch64-linux-gnu/usr/include/c++/8.3.0/stdexcept:39,
                 from /usr/aarch64-linux-gnu/usr/include/c++/8.3.0/array:39,
                 from /builddir/wsjtx-2.0.1/build/wsjtx-prefix/src/wsjtx/Audio/BWFFile.hpp:4,
                 from /builddir/wsjtx-2.0.1/build/wsjtx-prefix/src/wsjtx/Audio/BWFFile.cpp:1:
/usr/aarch64-linux-gnu/usr/include/c++/8.3.0/cstdlib:75:15: fatal error: stdlib.h: No such file or directory
 #include_next <stdlib.h>
               ^~~~~~~~~~

I'm unsure of how to fix this latest error, or even if my other fixes are "kosher" w.r.t. good packaging practices. I've grep'd through srcpkgs and I can't find any other packages that run into this issue.

[jnbr]

I think your fixes are ok so far, but you might as well just set something like
nocross="nested build systems" as those are always hard to get right and in addition cmake and qmake aren't the best systems when it comes to cross building (at least in void).

[travankor]

#14170