From 0e330d0042d0f073c2a0546fdbc88b3016502d2c Mon Sep 17 00:00:00 2001
From: Mathieu Virbel <mat@kivy.org>
Date: Fri, 5 May 2017 00:50:27 +0200
Subject: [PATCH] setup: fallback on pkg-config for search both gstreamer and
 sdl2 if frameworks are not installed. Closes #4392

---
 setup.py | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/setup.py b/setup.py
index 87d7c7606..d5e9191e1 100644
--- a/setup.py
+++ b/setup.py
@@ -402,13 +402,16 @@ elif platform == 'darwin':
 # works if we forced the options or in autodetection
 if platform not in ('ios', 'android') and (c_options['use_gstreamer']
                                            in (None, True)):
+    gstreamer_valid = False
     if c_options['use_osx_frameworks'] and platform == 'darwin':
         # check the existence of frameworks
         f_path = '/Library/Frameworks/GStreamer.framework'
         if not exists(f_path):
             c_options['use_gstreamer'] = False
-            print('Missing GStreamer framework {}'.format(f_path))
+            print('GStreamer framework not found, fallback on pkg-config')
         else:
+            print('GStreamer framework found')
+            gstreamer_valid = True
             c_options['use_gstreamer'] = True
             gst_flags = {
                 'extra_link_args': [
@@ -420,11 +423,15 @@ if platform not in ('ios', 'android') and (c_options['use_gstreamer']
                     '-framework', 'GStreamer'],
                 'include_dirs': [join(f_path, 'Headers')]}
 
-    else:
+    if not gstreamer_valid:
         # use pkg-config approach instead
         gst_flags = pkgconfig('gstreamer-1.0')
         if 'libraries' in gst_flags:
+            print('GStreamer found via pkg-config')
             c_options['use_gstreamer'] = True
+        else:
+            print('GStreamer not found via pkg-config, disabling.')
+            c_options['use_gstreamer'] = False
 
 
 # detect SDL2, only on desktop and iOS, or android if explicitly enabled
@@ -433,6 +440,7 @@ sdl2_flags = {}
 if c_options['use_sdl2'] or (
         platform not in ('android',) and c_options['use_sdl2'] is None):
 
+    sdl2_valid = False
     if c_options['use_osx_frameworks'] and platform == 'darwin':
         # check the existence of frameworks
         sdl2_valid = True
@@ -460,16 +468,20 @@ if c_options['use_sdl2'] or (
 
         if not sdl2_valid:
             c_options['use_sdl2'] = False
-            print('Deactivate SDL2 compilation due to missing frameworks')
+            print('SDL2 frameworks not found, fallback on pkg-config')
         else:
             c_options['use_sdl2'] = True
             print('Activate SDL2 compilation')
 
-    elif platform != "ios":
+    if not sdl2_valid and platform != "ios":
         # use pkg-config approach instead
         sdl2_flags = pkgconfig('sdl2', 'SDL2_ttf', 'SDL2_image', 'SDL2_mixer')
         if 'libraries' in sdl2_flags:
+            print('SDL2 found via pkg-config')
             c_options['use_sdl2'] = True
+        else:
+            print('SDL2 not found via pkg-config, disabling.')
+            c_options['use_sdl2'] = False
 
 
 # -----------------------------------------------------------------------------