[OE-core] [PATCH 22/23] qemu: add environment variable wrappers to make qemu look good with gtk frontend

[Alexander Kanavin]

GTK_THEME instructs gtk to use its built-in theme. Otherwise
gtk attempts to use the theme from the host, which may be from
a totally mismatching gtk version.

On the other hand FONTCONFIG_PATH tells it to use the host fonts,
as providing fonts in the native sysroot and instructing the components
to use them is a lot more tricky.

GDK_PIXBUF_MODULE_FILE is set, because otherwise qemu works but
fills stdout with error messages, which eventually fill the pipe
stdout is redirected to by runqemuscript , which causes the qemu process
to lock up.

Signed-off-by: Alexander Kanavin <alex.kanavin at gmail.com>
---
 meta/recipes-devtools/qemu/qemu.inc | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc
index 6937bbc87b4..23da51b5938 100644
--- a/meta/recipes-devtools/qemu/qemu.inc
+++ b/meta/recipes-devtools/qemu/qemu.inc
@@ -48,6 +48,28 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' install
 }
 
+do_install_append_class-native() {
+        gdk_pixbuf_module_file=`pkg-config --variable=gdk_pixbuf_cache_file gdk-pixbuf-2.0`
+
+        for tool in `ls ${D}${bindir}/qemu-system-*`; do
+                create_wrapper $tool \
+                        GDK_PIXBUF_MODULE_FILE=$gdk_pixbuf_module_file \
+                        FONTCONFIG_PATH=/etc/fonts \
+                        GTK_THEME=Adwaita
+        done
+}
+
+do_install_append_class-nativesdk() {
+        gdk_pixbuf_module_file=`pkg-config --variable=gdk_pixbuf_cache_file gdk-pixbuf-2.0`
+
+        for tool in `ls ${D}${bindir}/qemu-system-*`; do
+                create_wrapper $tool \
+                        GDK_PIXBUF_MODULE_FILE=$gdk_pixbuf_module_file \
+                        FONTCONFIG_PATH=/etc/fonts \
+                        GTK_THEME=Adwaita
+        done
+}
+
 # The following fragment will create a wrapper for qemu-mips user emulation
 # binary in order to work around a segmentation fault issue. Basically, by
 # default, the reserved virtual address space for 32-on-64 bit is set to 4GB.
-- 
2.17.1