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https://gitlab.gnome.org/GNOME/glib.git
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dcfc9f689e
There is currently no `dllimport` attribute on any of our function, which prevents MSVC to optimize function calls. To fix that issue, we need to redeclare all our visibility macros for each of our libraries, because when compiling e.g. GIO code, we need dllimport in GLIB headers and dllexport in GIO headers. That means they cannot use the same GLIB_AVAILABLE_* macro. Since that's a lot of boilerplate to copy/paste after each version bump, this MR generate all those macros using a python script. Also simplify the meson side by using `gnu_symbol_visibility : 'hidden'` keyword argument instead of passing the cflag manually. This leaves only API index to add manually into glib-docs.xml when bumping GLib version. That file cannot be generated because Meson does not allow passing a buit file to gnome.gtkdoc()'s main_xml kwarg unfortunately.
143 lines
4.5 KiB
Meson
143 lines
4.5 KiB
Meson
gmoduleconf_conf = configuration_data()
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g_module_need_uscore = 0
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g_module_broken_rtld_global = 0
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g_module_have_dlerror = 0
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g_module_impl = ''
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# On Windows force native WIN32 shared lib loader
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if host_system == 'windows'
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g_module_impl = 'G_MODULE_IMPL_WIN32'
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# Force native AIX library loader
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# dlopen() filepath must be of the form /path/libname.a(libname.so)
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elif host_system == 'aix'
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g_module_impl = 'G_MODULE_IMPL_AR'
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elif have_dlopen_dlsym
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g_module_impl = 'G_MODULE_IMPL_DL'
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endif
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# additional checks for G_MODULE_IMPL_DL
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if g_module_impl == 'G_MODULE_IMPL_DL'
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# FIXME: check for OSF1/5.0 RTLD_GLOBAL brokenness (is this still relevant?)
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# Check whether we need preceding underscores
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if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl'
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message('Building for MSVC: assuming that symbols are prefixed with underscore')
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g_module_need_uscore = 1
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elif meson.can_run_host_binaries()
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# FIXME: communicate result via stdout instead of return value, so non-0 return is not printed in bold red
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rres = cc.run(dlopen_dlsym_test_code,
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dependencies : libdl_dep,
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name : 'dlsym() preceding underscores')
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if host_system == 'windows' or (rres.compiled() and rres.returncode() == 0)
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g_module_need_uscore = 1
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endif
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else
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message('Cross-compiling: assuming that symbols aren\'t prefixed with underscore')
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g_module_need_uscore = 0
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endif
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if cc.has_function('dlerror', dependencies : libdl_dep)
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g_module_have_dlerror = 1
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endif
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endif
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# Done, have we got an implementation?
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if g_module_impl == ''
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g_module_impl = '0'
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message('WARNING: No suitable GModule implementation found!')
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endif
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gmoduleconf_conf.set('G_MODULE_IMPL', g_module_impl)
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gmoduleconf_conf.set('G_MODULE_SUPPORTED', g_module_impl != '0')
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gmoduleconf_conf.set('G_MODULE_HAVE_DLERROR', g_module_have_dlerror)
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gmoduleconf_conf.set('G_MODULE_NEED_USCORE', g_module_need_uscore)
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gmoduleconf_conf.set('G_MODULE_BROKEN_RTLD_GLOBAL', g_module_broken_rtld_global)
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gmoduleconf_h = configure_file(input : 'gmoduleconf.h.in',
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output : 'gmoduleconf.h',
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configuration : gmoduleconf_conf)
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# Expose as variable to be used by gobject-introspection
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# when it includes GLib as a subproject
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gmodule_h = files('gmodule.h')
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gmodule_c = files('gmodule.c')
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install_headers([gmodule_h], subdir : 'glib-2.0')
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gvisibility_h = configure_file(
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output: 'gmodule-visibility.h',
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command: [gen_visibility_macros, meson.project_version(), 'visibility-macros', 'GMODULE', '@OUTPUT@'],
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)
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install_headers(gvisibility_h, subdir : 'glib-2.0/gmodule')
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gmodule_sources = [gmodule_c]
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if host_system == 'windows'
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gmodule_win_rc = configure_file(
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input: 'gmodule.rc.in',
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output: 'gmodule.rc',
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configuration: glibconfig_conf,
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)
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gmodule_win_res = windows.compile_resources(gmodule_win_rc)
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gmodule_sources += [gmodule_win_res]
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endif
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libgmodule = library('gmodule-2.0',
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sources : gmodule_sources,
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version : library_version,
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soversion : soversion,
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darwin_versions : darwin_versions,
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install : true,
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include_directories : [configinc, gmoduleinc],
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dependencies : [libdl_dep, libglib_dep],
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c_args : ['-DG_LOG_DOMAIN="GModule"', '-DGMODULE_COMPILATION'],
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gnu_symbol_visibility : 'hidden',
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link_args : [glib_link_flags],
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)
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supported_var = 'gmodule_supported=@0@'.format(g_module_impl != '0')
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pkg.generate(libgmodule,
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libraries : [thread_dep],
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requires : ['glib-2.0'],
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version : glib_version,
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variables : [supported_var],
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install_dir : glib_pkgconfigreldir,
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filebase : 'gmodule-no-export-2.0',
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name : 'GModule',
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description : 'Dynamic module loader for GLib',
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)
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pkg.generate(libraries : [libgmodule, export_dynamic_ldflags],
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requires : ['glib-2.0'],
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version : glib_version,
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variables : [supported_var],
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install_dir : glib_pkgconfigreldir,
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filebase : 'gmodule-export-2.0',
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name : 'GModule',
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description : 'Dynamic module loader for GLib',
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)
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pkg.generate(libraries : [libgmodule, export_dynamic_ldflags],
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requires : ['glib-2.0'],
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version : glib_version,
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variables : [supported_var],
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install_dir : glib_pkgconfigreldir,
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filebase : 'gmodule-2.0',
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name : 'GModule',
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description : 'Dynamic module loader for GLib',
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)
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libgmodule_dep = declare_dependency(link_with : libgmodule,
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include_directories : [gmoduleinc],
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dependencies : [libglib_dep])
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meson.override_dependency('gmodule-no-export-2.0', libgmodule_dep)
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meson.override_dependency('gmodule-export-2.0', libgmodule_dep)
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meson.override_dependency('gmodule-2.0', libgmodule_dep)
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if build_tests
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subdir('tests')
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endif
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