meson: Use pkgconfig-native for the native tools

QT relies on host compilers such mas mocc. Modify meson to use
pkgconfig-native instead of pkgconfig in such cases.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-devtools/meson/meson/native_bindir.patch

@@ -0,0 +1,52 @@
+diff --git a/mesonbuild/dependencies.py b/mesonbuild/dependencies.py
+index da73a57b7ecd..22100f69c580 100644
+--- a/mesonbuild/dependencies.py
++++ b/mesonbuild/dependencies.py
+@@ -65,7 +65,7 @@ class Dependency():
+     def need_threads(self):
+         return False
+ 
+-    def get_pkgconfig_variable(self, variable_name):
++    def get_pkgconfig_variable(self, variable_name, use_native=False):
+         raise MesonException('Tried to get a pkg-config variable from a non-pkgconfig dependency.')
+ 
+ class InternalDependency(Dependency):
+@@ -177,8 +177,12 @@ class PkgConfigDependency(Dependency):
+         return s.format(self.__class__.__name__, self.name, self.is_found,
+                         self.version_reqs)
+ 
+-    def _call_pkgbin(self, args):
+-        p, out = Popen_safe([self.pkgbin] + args, env=os.environ)[0:2]
++    def _call_pkgbin(self, args, use_native=False):
++        if use_native:
++            pkgbin = [self.pkgbin + "-native"]
++        else:
++            pkgbin = [self.pkgbin]
++        p, out = Popen_safe(pkgbin + args, env=os.environ)[0:2]
+         return (p.returncode, out.strip())
+ 
+     def _set_cargs(self):
+@@ -212,8 +216,8 @@ class PkgConfigDependency(Dependency):
+                 self.is_libtool = True
+             self.libs.append(lib)
+ 
+-    def get_pkgconfig_variable(self, variable_name):
+-        ret, out = self._call_pkgbin(['--variable=' + variable_name, self.name])
++    def get_pkgconfig_variable(self, variable_name, use_native=False):
++        ret, out = self._call_pkgbin(['--variable=' + variable_name, self.name], use_native=use_native)
+         variable = ''
+         if ret != 0:
+             if self.required:
+@@ -933,10 +937,10 @@ class QtBaseDependency(Dependency):
+             corekwargs = {'required': 'false', 'silent': 'true'}
+             core = PkgConfigDependency(self.qtpkgname + 'Core', env, corekwargs)
+         # Used by self.compilers_detect()
+-        self.bindir = core.get_pkgconfig_variable('host_bins')
++        self.bindir = core.get_pkgconfig_variable('host_bins', use_native=True)
+         if not self.bindir:
+             # If exec_prefix is not defined, the pkg-config file is broken
+-            prefix = core.get_pkgconfig_variable('exec_prefix')
++            prefix = core.get_pkgconfig_variable('exec_prefix', use_native=True)
+             if prefix:
+                 self.bindir = os.path.join(prefix, 'bin')
+ 

meta-oe/recipes-devtools/meson/meson_0.37.1.bb

@@ -4,7 +4,10 @@ SUMMARY = "A high performance build system"
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://COPYING;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
-SRC_URI = "git://github.com/mesonbuild/meson.git"
+SRC_URI = " \
+    git://github.com/mesonbuild/meson.git \
+    file://native_bindir.patch \
+"
 
 SRCREV = "3d4bfdcb22314ea7db45a5b075f8b2a9c1498aab"