libardourcp and now libardour_midisurface are not control
surfaces, but helper libraries for those.
They need to be deployed to the library folder (shared between
ctrl surfaces) and not scanned as ctrl surfaces at runtime.
This will also change the internal backend name, so it will miss the
previous 'config' setting '<State backend="Pulseaudio" ...'` and the
session file's '<EngineHints backend="Pulseaudio" ...'. But that is no
big deal after upgrading. Especially after the backend has been broken
for some users for a while.
gtk2_ardour/wscript:15:1 redefinition of unused 'TaskGen' from line 3
wscript:102:9 dictionary key 'sse' repeated with different values
wscript:104:9 dictionary key 'sse' repeated with different values
Found via `codespell -q 3 -S *.po,./share/patchfiles,./libs -L ba,buss,busses,doubleclick,hsi,ontop,ro,seh,siz,sord,sur,te,trough,ue`
Follow-up to 364f2f078
See also af69061644 and b8e1cd53c. This can be useful in
some cases where running a dry-run build will fail.
e.g. with --freedesktop files that are not generated before the
actual build.
This breaks windows builds, since apparently build(bld) is
evaluated twice (once to write compile_commands.json and once
to compile), even though `obj` is reset.
eg. in libs/pbd/wscript
```
if bld.env['build_target'] == 'mingw':
obj.source += [ 'windows_special_dirs.cc' ]
```
results in
[ 65/1159] Compiling libs/pbd/windows_special_dirs.cc
[ 69/1159] Compiling libs/pbd/windows_special_dirs.cc
which then produces an error when linking:
```
/usr/bin/x86_64-w64-mingw32-ld: libs/pbd/windows_special_dirs.cc.2.o:libs/pbd/windows_special_dirs.cc:28: multiple definition of `PBD::get_win_special_folder_path[abi:cxx11](int)'; libs/pbd/windows_special_dirs.cc.2.o:libs/pbd/windows_special_dirs.cc:28: first defined here
```
This enables the generation of build/compile_commands.json
which is a compilation database recognized by some IDE/editors
to provide compiler quality linting.
To name a few:
- Visual Studio Code
- VIM (with ALE plugin)
With glib 2.64, volatile gint produce annoying Wcast-qual
compiler warnings with mingw/gcc-8.
Even though the the build succeeds, and only glib 2.68+
requires non-volatile atomics this results in a much
cleaner build-log.
