From 81bfedfa02fd864f3e4b295091d49c3eb20bb372 Mon Sep 17 00:00:00 2001
From: Adrian Perez de Castro <aperez@igalia.com>
Date: Wed, 16 Sep 2020 00:01:37 +0300
Subject: [PATCH] meson: Use a partial dependency to pass EGL module flags

Make Meson try to always find an "egl" dependency, if found extract
the include directories and compiler flags from ir using a partial
dependency, otherwise check that at least EGL/eglplatform.h is
available when the pkg-config module is not found.

Fixes #70

Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
[Upstrem status: https://github.com/WebPlatformForEmbedded/libwpe/pull/71]

---
 meson.build | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index 5c88aed..a05f4ab 100644
--- a/meson.build
+++ b/meson.build
@@ -57,8 +57,16 @@ dependencies = [
 ]
 
 cc = meson.get_compiler('c')
-if not cc.has_header('EGL/eglplatform.h')
-	dependencies += dependency('egl')
+egl_dep = dependency('egl', required: false)
+if egl_dep.found()
+	dependencies += egl_dep.partial_dependency(
+		compile_args: true,
+		includes: true,
+	)
+else
+	assert(cc.has_header('EGL/eglplatform.h'),
+		'Required heaer <EGL/eglplatform.h> not found'
+	)
 endif
 
 if not cc.has_function('dlopen')
-- 
2.28.0