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package/libglvnd: new package

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libglvnd is the GL Vendor-Neutral Dispatch library, used to dispatch
GL calls across multiple GL implementations at runtime.

Full GL support, as usual, requires (parts of) the X11 stack: libX11,
libXext, and xorgproto (for glproto). However, with just libX11, it is
possible to do EGL on X11. EGL and GLES have no dependencies.

Note: x11 and glx are 'features', so need to be 'enabled' or 'disabled'
(or 'auto', but we don't care in Buildroot), while egl and gles1/2 are
'booleans', so need to be 'true' or 'false'.

When an actual provider for GL, EGL, or GLES is enabled, so must the
corresponding flavour be enabled in libglvnd. Conversely, when there is
no actual provider, the corresponding support must be disabled in
libglvnd. So we make each flavour selectable with hidden options, which
actual providers will have to select.

The license for libglvnd itself is a custom license by NVidia. It is
pretty close to MIT, but it's different (although Debian does classify
it as MIT); SPDX has no identifier for that license either. As such, we
choose to just identify it as 'libglvnd license', and let users deal
that with their legal department. Additionally, libglvnd bundles some
code from other projects, so we list them explicitly as well.

Signed-off-by: Jakub Skrzypnik <jskrzypnik@novomatic-tech.com>
[yann.morin.1998@free.fr:
  - provide help text
  - don't force X11 libraries, split them between X11 and full GL
  - make each flavour selectable
  - fix make check-package issues
  - fix and complete licensing information
  - bump to 1.3.2
  - expand commit log
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Jakub Skrzypnik 2020-07-27 10:47:01 +02:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent b102352b62
commit 0378e2e5d9
5 changed files with 108 additions and 0 deletions
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3
DEVELOPERS
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@ -1265,6 +1265,9 @@ F: configs/orangepi_zero_plus2_defconfig
F: configs/pine64_defconfig
F: configs/pine64_sopine_defconfig
N: Jakub Skrzypnik <jskrzypnik@novomatic-tech.com>
F: package/libglvnd/
N: James Hilliard <james.hilliard1@gmail.com>
F: package/apcupsd/
F: package/exfatprogs/

1
package/Config.in
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@ -331,6 +331,7 @@ comment "Graphic libraries"
source "package/freerdp/Config.in"
source "package/graphicsmagick/Config.in"
source "package/imagemagick/Config.in"
source "package/libglvnd/Config.in"
source "package/linux-fusion/Config.in"
source "package/lite/Config.in"
source "package/mesa3d/Config.in"

44
package/libglvnd/Config.in Normal file
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@ -0,0 +1,44 @@
config BR2_PACKAGE_LIBGLVND
bool "libglvnd"
help
The GL Vendor-Neutral Dispatch library
libglvnd is a vendor-neutral dispatch layer for arbitrating
OpenGL API calls between multiple vendors. It allows multiple
drivers from different vendors to coexist on the same
filesystem, and determines which vendor to dispatch each API
call to at runtime.
Both GLX and EGL are supported, in any combination with OpenGL
and OpenGL ES.
if BR2_PACKAGE_LIBGLVND
# The following symbols should be selected by the libglvnd-aware
# GL/EGL/GLES providers.
config BR2_PACKAGE_LIBGLVND_DISPATCH_GL
bool
depends on BR2_PACKAGE_XORG7 # libx11, libXext, xorgproto
select BR2_PACKAGE_XLIB_LIBX11
select BR2_PACKAGE_XLIB_LIBXEXT
select BR2_PACKAGE_XLIB_XORGPROTO
select BR2_PACKAGE_HAS_LIBGL
config BR2_PACKAGE_LIBGLVND_DISPATCH_EGL
bool
select BR2_PACKAGE_HAS_LIBEGL
config BR2_PACKAGE_LIBGLVND_DISPATCH_GLES
bool
select BR2_PACKAGE_HAS_LIBGLES
config BR2_PACKAGE_PROVIDES_LIBGL
default "libglvnd" if BR2_PACKAGE_LIBGLVND_DISPATCH_GL
config BR2_PACKAGE_PROVIDES_LIBEGL
default "libglvnd" if BR2_PACKAGE_LIBGLVND_DISPATCH_EGL
config BR2_PACKAGE_PROVIDES_LIBGLES
default "libglvnd" if BR2_PACKAGE_LIBGLVND_DISPATCH_GLES
endif

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package/libglvnd/libglvnd.hash Normal file
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@ -0,0 +1,7 @@
# Locally computed
sha256 6332c27f4c792b09a3eb1d7ae18c2d6ff6a0acaf3a746489caf859e659fca2f7 libglvnd-v1.3.2.tar.gz
# Locally computed hashes for license files
sha256 224534547628a9e5e889d8808385bd38839e6bdb77d89c90ac04dad6891a4f5f README.md
sha256 bebdc0fd27cd37af8406e47af23c113866b7856c3f7349ffcbc672029ec8acf7 src/util/uthash/LICENSE
sha256 f6f207863675ca5a5128fd120b9aef4f4bbab73ffa57e5f771ccffc8e3cc56b7 src/util/cJSON/LICENSE

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package/libglvnd/libglvnd.mk Normal file
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@ -0,0 +1,53 @@
################################################################################
#
# libglvnd
#
################################################################################
LIBGLVND_VERSION = 1.3.2
LIBGLVND_SOURCE = libglvnd-v$(LIBGLVND_VERSION).tar.gz
LIBGLVND_SITE = https://gitlab.freedesktop.org/glvnd/libglvnd/-/archive/v$(LIBGLVND_VERSION)
LIBGLVND_LICENSE = \
libglvnd license, \
Apache-2.0 (Khronos headers), \
MIT (Xorg; mesa; cJSON), \
BSD-1=Clause (uthash)
LIBGLVND_LICENSE_FILES = \
README.md \
src/util/uthash/LICENSE \
src/util/cJSON/LICENSE
LIBGLVND_INSTALL_STAGING = YES
ifeq ($(BR2_PACKAGE_XLIB_LIBX11),y)
LIBGLVND_DEPENDENCIES += xlib_libX11
LIBGLVND_CONF_OPTS += -Dx11=enabled
else
LIBGLVND_CONF_OPTS += -Dx11=disabled
endif
ifeq ($(BR2_PACKAGE_LIBGLVND_DISPATCH_GL),y)
LIBGLVND_DEPENDENCIES += xlib_libXext xorgproto
LIBGLVND_CONF_OPTS += -Dglx=enabled
LIBGLVND_PROVIDES += libgl
else
LIBGLVND_CONF_OPTS += -Dglx=disabled
endif
ifeq ($(BR2_PACKAGE_LIBGLVND_DISPATCH_EGL),y)
LIBGLVND_CONF_OPTS = -Degl=true
LIBGLVND_PROVIDES += libegl
else
LIBGLVND_CONF_OPTS = -Degl=false
endif
ifeq ($(BR2_PACKAGE_LIBGLVND_DISPATCH_GLES),y)
LIBGLVND_CONF_OPTS = -Dgles1=true -Dgles2=true
LIBGLVND_PROVIDES += libgles
else
LIBGLVND_CONF_OPTS = -Dgles1=false -Dgles2=false
endif
$(eval $(meson-package))