From 2d31851d3b21f5a377f59fe1c1afa4294ce9167e Mon Sep 17 00:00:00 2001
From: Nirbheek Chauhan <nirbheek@centricular.com>
Date: Tue, 17 Jan 2017 13:33:34 +0530
Subject: [PATCH] Print pkg-config error when framework dep isn't found

Without this, macOS users can't figure out why a particular dependency
wasn't found because the pkg-config error message gets masked by the
fresh and useless DependencyException.
---
 mesonbuild/dependencies.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mesonbuild/dependencies.py b/mesonbuild/dependencies.py
index e11fd5702..e583044c9 100644
--- a/mesonbuild/dependencies.py
+++ b/mesonbuild/dependencies.py
@@ -1443,7 +1443,9 @@ def find_external_dependency(name, environment, kwargs):
     if mesonlib.is_osx():
         fwdep = ExtraFrameworkDependency(name, required)
         if required and not fwdep.found():
-            raise DependencyException('Dependency "%s" not found' % name)
+            m = 'Dependency {!r} not found, tried Extra Frameworks ' \
+                'and Pkg-Config:\n\n' + str(pkg_exc)
+            raise DependencyException(m.format(name))
         return fwdep
     if pkg_exc is not None:
         raise pkg_exc