From 3bc5d48257032b6bbee532aad15062fbbcc43bfe 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>
Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>

---
 ext/opencv/meson.build | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ext/opencv/meson.build b/ext/opencv/meson.build
index 1d86b90..b5c8b95 100644
--- a/ext/opencv/meson.build
+++ b/ext/opencv/meson.build
@@ -87,6 +87,9 @@ if opencv_found
   opencv_prefix = opencv_dep.get_variable('prefix')
   gstopencv_cargs += ['-DOPENCV_PREFIX="' + opencv_prefix + '"']
 
+  pkgconf_sysroot = run_command(python3, '-c', 'import os; print(os.environ.get("PKG_CONFIG_SYSROOT_DIR"))').stdout().strip()
+  opencv_prefix = pkgconf_sysroot + 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', check: false)