[Buildroot] [PATCH v2 1/5] package/qt: Add optional support for OpenGL

[Yann E. MORIN <yann.morin.1998@free.fr>]

Bernd, All,

On 2016-06-12 22:07 +0200, Bernd Kuhls spake thusly:
> OpenGL support is only available for the desktop variant of Qt4 and not
> the embedded one: http://code.qt.io/cgit/qt/qt.git/tree/configure#n6612
> 
> This patch is needed to fix a compile error with libv4l which depends
> on OpenGL support if qt4 is used by libv4l as optional dependency.
> 
> Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

Regards,
Yann E. MORIN.

> ---
> v2: Added "none" option (Yann)
> 
>  package/qt/Config.in | 20 ++++++++++++++++++++
>  package/qt/qt.mk     |  3 +++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/package/qt/Config.in b/package/qt/Config.in
> index 0ab8417..14b13ce 100644
> --- a/package/qt/Config.in
> +++ b/package/qt/Config.in
> @@ -350,6 +350,24 @@ config BR2_PACKAGE_QT_PHONON_BACKEND
>  	  Build the platform Phonon plugin.
>  	  If unsure, say n.
>  
> +choice
> +	prompt "OpenGL API"
> +	help
> +	  Select OpenGL API.
> +
> +config BR2_PACKAGE_QT_OPENGL_NONE
> +	bool "No OpenGL support"
> +
> +comment "Desktop OpenGL not available (needs Qt standard (X11))"
> +	depends on !BR2_PACKAGE_QT_X11
> +
> +config BR2_PACKAGE_QT_OPENGL_GL_DESKTOP
> +	bool "Desktop OpenGL"
> +	depends on BR2_PACKAGE_HAS_LIBGL
> +	depends on BR2_PACKAGE_QT_X11
> +	help
> +	  Use desktop OpenGL.
> +
>  config BR2_PACKAGE_QT_OPENGL_ES
>  	bool "OpenGL ES v2.x support"
>  	depends on BR2_PACKAGE_HAS_LIBGLES
> @@ -357,6 +375,8 @@ config BR2_PACKAGE_QT_OPENGL_ES
>  	help
>  	  Enable the OpenGL ES v2.x support.
>  
> +endchoice
> +
>  endif
>  
>  config BR2_PACKAGE_QT_DBUS
> diff --git a/package/qt/qt.mk b/package/qt/qt.mk
> index f29a671..d56fe7e 100644
> --- a/package/qt/qt.mk
> +++ b/package/qt/qt.mk
> @@ -336,6 +336,9 @@ QT_DEPENDENCIES += libgles libegl
>  QT_CFLAGS += `$(PKG_CONFIG_HOST_BINARY) --cflags egl`
>  QT_CXXFLAGS += `$(PKG_CONFIG_HOST_BINARY) --cflags egl`
>  QT_LDFLAGS += `$(PKG_CONFIG_HOST_BINARY) --libs egl`
> +else ifeq ($(BR2_PACKAGE_QT_OPENGL_GL_DESKTOP),y)
> +QT_CONFIGURE_OPTS += -opengl desktop
> +QT_DEPENDENCIES += libgl
>  else
>  QT_CONFIGURE_OPTS += -no-opengl
>  endif
> -- 
> 2.8.1
> 
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