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From f41caae14b618ab815ede3c408e7482b00316e3e Mon Sep 17 00:00:00 2001
From: Andrey Zhizhikin <andrey.z@gmail.com>
Date: Mon, 27 Jan 2020 10:22:35 +0000
Subject: [PATCH] opencv: resolve missing opencv data dir in yocto build

When Yocto build is performed, opencv searches for data dir using simple
'test' command, this fails because pkg-config provides an absolute
path on the target which needs to be prepended by PKG_CONFIG_SYSROOT_DIR
in order for the 'test' utility to pick up the absolute path.

Upstream-Status: Inappropriate [OE-specific]

Signed-off-by: Andrey Zhizhikin <andrey.z@gmail.com>
---
 ext/opencv/meson.build | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ext/opencv/meson.build b/ext/opencv/meson.build
index f38b55dfe..a26403482 100644
--- a/ext/opencv/meson.build
+++ b/ext/opencv/meson.build
@@ -78,20 +78,21 @@ else
 endif
 
 if opencv_found
+  pkgconf_sysroot = run_command(python3, '-c', 'import os; print(os.environ.get("PKG_CONFIG_SYSROOT_DIR"))').stdout().strip()
   opencv_prefix = opencv_dep.get_pkgconfig_variable('prefix')
   gstopencv_cargs += ['-DOPENCV_PREFIX="' + opencv_prefix + '"']
 
   # Check the data dir used by opencv for its xml data files
   # Use prefix from pkg-config to be compatible with cross-compilation
-  r = run_command('test', '-d', opencv_prefix + '/share/opencv')
+  r = run_command('test', '-d', pkgconf_sysroot + opencv_prefix + '/share/opencv')
   if r.returncode() == 0
     gstopencv_cargs += '-DOPENCV_PATH_NAME="opencv"'
   else
-    r = run_command('test', '-d', opencv_prefix + '/share/OpenCV')
+    r = run_command('test', '-d', pkgconf_sysroot + opencv_prefix + '/share/OpenCV')
     if r.returncode() == 0
       gstopencv_cargs += '-DOPENCV_PATH_NAME="OpenCV"'
     else
-      r = run_command('test', '-d', opencv_prefix + '/share/opencv4')
+      r = run_command('test', '-d', pkgconf_sysroot + opencv_prefix + '/share/opencv4')
       if r.returncode() == 0
         gstopencv_cargs += '-DOPENCV_PATH_NAME="opencv4"'
       else
-- 
2.17.1