Merge pull request #2509 from madebr/boost_dependency_pkg_config

Enable get_pkgconfig_variable for python3 dependencies (if pkg-config is used)

mesonbuild/dependencies/misc.py

@@ -602,15 +602,18 @@ class Python3Dependency(ExternalDependency):
         self.name = 'python3'
         # We can only be sure that it is Python 3 at this point
         self.version = '3'
+        self.pkgdep = None
         if DependencyMethods.PKGCONFIG in self.methods:
             try:
-                pkgdep = PkgConfigDependency('python3', environment, kwargs)
-                if pkgdep.found():
-                    self.compile_args = pkgdep.get_compile_args()
-                    self.link_args = pkgdep.get_link_args()
-                    self.version = pkgdep.get_version()
+                self.pkgdep = PkgConfigDependency('python3', environment, kwargs)
+                if self.pkgdep.found():
+                    self.compile_args = self.pkgdep.get_compile_args()
+                    self.link_args = self.pkgdep.get_link_args()
+                    self.version = self.pkgdep.get_version()
                     self.is_found = True
                     return
+                else:
+                    self.pkgdep = None
             except Exception:
                 pass
         if not self.is_found:
@@ -674,6 +677,12 @@ class Python3Dependency(ExternalDependency):
         else:
             return [DependencyMethods.PKGCONFIG]
 
+    def get_pkgconfig_variable(self, variable_name):
+        if self.pkgdep:
+            return self.pkgdep.get_pkgconfig_variable(variable_name)
+        else:
+            return super().get_pkgconfig_variable(variable_name)
+
 
 class PcapDependency(ExternalDependency):
     def __init__(self, environment, kwargs):

test cases/python3/2 extmodule/meson.build

@@ -17,3 +17,8 @@ if py3_dep.found()
 else
   error('MESON_SKIP_TEST: Python3 libraries not found, skipping test.')
 endif
+
+py3_pkg_dep = dependency('python3', method: 'pkg-config', required : false)
+if py3_pkg_dep.found()
+  python_lib_dir = py3_pkg_dep.get_pkgconfig_variable('libdir')
+endif