Meson and "Plug-In" library generation (libtool) question

[pyzahl (Percy Zahl)]

I am trying to port a project and switch to meson and succeeded with exception of figuring out how to tell meson to install run time loaded libraries – which have to be build and installed via libtool to create the .so files. I made to compile the object but then I get some error I do not understand.

This is how I open the plugins in my software:

	if ((gxsm_module = g_module_open (filename, G_MODULE_BIND_LAZY)) != NULL)...

I tried all those variants with the same result:

shared_library('PanView',...

shared_module('ProbeIndicator',...

build_target('pyremote',
        'pyremote.cpp',
        dependencies : deps,
        target_type : 'shared_module',
        install_dir: install_path,
        install: true,
)

==>

[17/73] Linking target plug-ins/common/libpyremote.so
c++ (Debian 11.2.0-13) 11.2.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

and later at install this error

Installing core-source/gxsm4 to /usr/local/bin
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/mesonbuild/mesonmain.py", line 138, in run
    return options.run_func(options)
  File "/usr/lib/python3/dist-packages/mesonbuild/minstall.py", line 771, in run
    installer.do_install(datafilename)
  File "/usr/lib/python3/dist-packages/mesonbuild/minstall.py", line 548, in do_install
    self.install_targets(d, dm, destdir, fullprefix)
  File "/usr/lib/python3/dist-packages/mesonbuild/minstall.py", line 666, in install_targets
    raise RuntimeError(f'File {t.fname!r} could not be found')
RuntimeError: File 'plug-ins/common/libpyremote.so' could not be found
FAILED: meson-install 
/usr/bin/meson install --no-rebuild
ninja: build stopped: subcommand failed.

[pyzahl (Percy Zahl)]

@pyzahl

	if ((gxsm_module = g_module_open (filename, G_MODULE_BIND_LAZY)) != NULL)...

OK, I figured it all out now!!

I needed to use the simple “library ()” target and not shared, module!

library(plugin_name,
plugin_sources,
plugin_gdbus_src,
link_with: [ lib_global_gxsm, lib_utils_gxsm, lib_app_gxsm, lib_pcs_gxsm ],
dependencies: deps,
install: true,
install_dir: install_path
)

Starting to love meson and ninja