Emit a detailed deprecation warning that explains what to do instead.
Also add a unittest.
```
DEPRECATION: target prog links against shared module mymod, which is incorrect.
This will be an error in the future, so please use shared_library() for mymod instead.
If shared_module() was used for mymod because it has references to undefined symbols,
use shared_libary() with `override_options: ['b_lundef=false']` instead.
```
Fixes https://github.com/mesonbuild/meson/issues/9492
Two tests are failing on Cygwin because the argument is passed as
a long-path and the Path is ending up as a short-path:
AllPlatformTests.test_run_target_files_path
Traceback (most recent call last):
File "/cygdrive/d/a/meson/meson/test cases/common/51 run target/check-env.py", line 22, in <module>
assert build_root == env_build_root
AssertionError
SubprojectsCommandTests.test_purge
> self.assertEqual(deleting(out), sorted([
str(self.subprojects_dir / 'redirect.wrap'),
str(self.subprojects_dir / 'sub_file'),
str(self.subprojects_dir / 'sub_git'),
]))
E AssertionError: Lists differ: ['/cygdrive/c/Users/runneradmin/AppData/Local/Temp/tmpeaa2a49[205 chars]git'] != ['/cygdrive/c/Users/RUNNER~1/AppData/Local/Temp/tmpeaa2a49z/s[196 chars]git']
[...]
['/cygdrive/c/Users/runneradmin/AppData/Local/Temp/tmpeaa2a49z/src/subprojects/redirect.wrap',
^^^^^^^^^^^
['/cygdrive/c/Users/RUNNER~1/AppData/Local/Temp/tmpeaa2a49z/src/subprojects/redirect.wrap',
^^^^^^^^
The fix is to not use the tempdir for all tests, but only for tests
that check the mode.
assertTrue and assertFalse are recommended against, if you can get a
more specific assertion. And sometimes it is considerably shorter, for
example we have a custom assertPathExists which we can take advantage
of.
Sometimes, the machine file can include compiler command line options,
in order to pick the correct multilib. For example, Meson uses "$cc
--print-search-dirs" to find the library search path, where $cc is the
cc from the machine file. Because the outputs of "gcc -m32
--print-search-dirs" and "gcc --print-search-dirs" are different, this
only works if you have
[binaries]
cc = ['gcc', '-m32']
in the machine file. Right now, however, the cmake module assumes that
the compiler listed in the machine file is either a compiler, or a
"launcher" followed by the compiler. Check if the second argument
starts with a slash (for Microsoft-like compilers) or a dash (for
everyone else), and if so presume that the CMAKE_*_COMPILER_LAUNCHER
need not be defined.
Nirbheek Chauhan
Eli Schwartz
Paolo Bonzini
makise-homura
Alan Coopersmith
Dylan Baker
lilinzhe
Xavier Claessens