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package/mesa3d: enable llvm support

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This patch provides LLVM support for Mesa3D, enabling llvmpipe
software rasterizer if Gallium swrast is selected.

In case Gallium r600 is selected, llvm AMDGPU backend is built.

Having llvm installed also enables radeonsi Gallium driver, but
it is not provided with this patch as it hasn't been tested.

It uses llvm-config (host variant) installed in STAGING_DIR/usr/bin
to get LLVM libraries. Assuming that LLVM version 5.0.1 is installed,
llvm-config --libs will output -lLLVM-5.0.

Signed-off-by: Valentin Korenblit <valentin.korenblit@smile.fr>
Tested-by: Jérôme Oufella <jerome.oufella@savoirfairelinux.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Valentin Korenblit 2018-04-04 18:31:20 +02:00 committed by Thomas Petazzoni
parent 29f04d7934
commit 3b5c24af38
2 changed files with 17 additions and 3 deletions
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6
package/mesa3d/Config.in
View file

@ -25,6 +25,11 @@ menuconfig BR2_PACKAGE_MESA3D
if BR2_PACKAGE_MESA3D
config BR2_PACKAGE_MESA3D_LLVM
bool "llvm support"
depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
select BR2_PACKAGE_LLVM
# inform the .mk file of gallium, dri or vulkan driver selection
config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
bool
@ -77,6 +82,7 @@ config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_R600
depends on BR2_i386 || BR2_x86_64
select BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
select BR2_PACKAGE_LIBDRM_RADEON
select BR2_PACKAGE_LLVM_AMDGPU if BR2_PACKAGE_MESA3D_LLVM
select BR2_PACKAGE_MESA3D_NEEDS_XA
help
Driver for ATI/AMD Radeon R600/R700/HD5000/HD6000 GPUs.

14
package/mesa3d/mesa3d.mk
View file

@ -32,6 +32,17 @@ ifeq ($(BR2_SHARED_STATIC_LIBS),y)
MESA3D_CONF_OPTS += --disable-static
endif
ifeq ($(BR2_PACKAGE_MESA3D_LLVM),y)
MESA3D_DEPENDENCIES += host-llvm llvm
MESA3D_CONF_OPTS += \
--with-llvm-prefix=$(STAGING_DIR)/usr \
--enable-llvm-shared-libs \
--enable-llvm
else
# Avoid automatic search of llvm-config
MESA3D_CONF_OPTS += --disable-llvm
endif
# The Sourcery MIPS toolchain has a special (non-upstream) feature to
# have "compact exception handling", which unfortunately breaks with
# mesa3d, so we disable it here by passing -mno-compact-eh.
@ -219,7 +230,4 @@ else
MESA3D_CONF_OPTS += --disable-lmsensors
endif
# Avoid automatic search of llvm-config
MESA3D_CONF_OPTS += --with-llvm-prefix=$(STAGING_DIR)/usr/bin
$(eval $(autotools-package))