pkgconfig: Process private libraries like regular ones

mesonbuild/modules/pkgconfig.py

@@ -63,23 +63,25 @@ class PkgConfigModule:
                     'Requires.private: {}\n'.format(' '.join(priv_reqs)))
             if len(conflicts) > 0:
                 ofile.write('Conflicts: {}\n'.format(' '.join(conflicts)))
-            ofile.write('Libs: -L${libdir}')
+            def generate_libs_flags(libs):
                 msg = 'Library target {0!r} has {1!r} set. Compilers ' \
                       'may not find it from its \'-l{2}\' linker flag in the ' \
                       '{3!r} pkg-config file.'
-            for l in libraries:
+                for l in libs:
                     if l.custom_install_dir:
-                    ofile.write(' -L${prefix}/%s ' % l.custom_install_dir)
+                        yield '-L${prefix}/%s ' % l.custom_install_dir
+                    else:
+                        yield '-L${libdir}'
                     lname = self._get_lname(l, msg, pcfile)
                     # If using a custom suffix, the compiler may not be able to
                     # find the library
                     if l.name_suffix_set:
                         mlog.log(mlog.red('WARNING:'), msg.format(l.name, 'name_suffix', lname, pcfile))
-                ofile.write(' -l{} '.format(lname))
-            ofile.write('\n')
+                    yield '-l%s' % lname
+            if len(libraries) > 0:
+                ofile.write('Libs: {}\n'.format(' '.join(generate_libs_flags(libraries))))
             if len(priv_libs) > 0:
-                ofile.write(
-                    'Libs.private: -L${libdir} {}\n'.format(' '.join(priv_libs)))
+                ofile.write('Libs.private: {}\n'.format(' '.join(generate_libs_flags(priv_libs))))
             ofile.write('Cflags:')
             for h in subdirs:
                 if h == '.':
@@ -88,10 +90,7 @@ class PkgConfigModule:
                 ofile.write(os.path.join('-I${includedir}', h))
             ofile.write('\n')
 
-    def generate(self, state, args, kwargs):
-        if len(args) > 0:
-            raise mesonlib.MesonException('Pkgconfig_gen takes no positional arguments.')
-        libs = kwargs.get('libraries', [])
+    def process_libs(self, libs):
         if not isinstance(libs, list):
             libs = [libs]
         processed_libs = []
@@ -101,7 +100,13 @@ class PkgConfigModule:
             if not isinstance(l, (build.SharedLibrary, build.StaticLibrary)):
                 raise mesonlib.MesonException('Library argument not a library object.')
             processed_libs.append(l)
-        libs = processed_libs
+        return processed_libs
+
+    def generate(self, state, args, kwargs):
+        if len(args) > 0:
+            raise mesonlib.MesonException('Pkgconfig_gen takes no positional arguments.')
+        libs = self.process_libs(kwargs.get('libraries', []))
+        priv_libs = self.process_libs(kwargs.get('libraries_private', []))
         subdirs = mesonlib.stringlistify(kwargs.get('subdirs', ['.']))
         version = kwargs.get('version', '')
         if not isinstance(version, str):
@@ -121,7 +126,6 @@ class PkgConfigModule:
         pub_reqs = mesonlib.stringlistify(kwargs.get('requires', []))
         priv_reqs = mesonlib.stringlistify(kwargs.get('requires_private', []))
         conflicts = mesonlib.stringlistify(kwargs.get('conflicts', []))
-        priv_libs = mesonlib.stringlistify(kwargs.get('libraries_private', []))
         pcfile = filebase + '.pc'
         pkgroot = kwargs.get('install_dir',None)
         if pkgroot is None: