asdk-libdrm
Public
Source
committed 1b064cc428f1
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libdrm - userspace library for drm1
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DRM README file3
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There are two main parts to this package: the DRM client library/interface6
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(libdrm.so) and kernel/hardware-specific device modules (such as radeon.ko).7
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The kernel device modules are not shipped with libdrm releases and should only8
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be built from the git tree by developers and bleeding-edge testers of9
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non-Intel hardware. The Intel kernel modules are developed in the Linux10
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kernel tree.3
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This is libdrm, a userspace library for accessing the DRM, direct4
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rendering manager, on Linux, BSD and other operating systes that5
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support the ioctl interface. The library provides wrapper functions6
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for the ioctls to avoid exposing the kernel interface directly, and7
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for chipsets with drm memory manager, support for tracking relocations8
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and buffers. libdrm is a low-level library, typically used by9
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graphics drivers such as the Mesa DRI drivers, the X drivers, libva10
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and similar projects. New functionality in the kernel DRM drivers11
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typically requires a new libdrm, but a new libdrm will always work12
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with an older kernel.11
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Compiling14
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By default, libdrm and the DRM header files will install into /usr/local/.17
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If you want to install this DRM to replace your system copy, say:18
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./configure --prefix=/usr --exec-prefix=/20
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Then,22
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make install18
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libdrm is a standard autotools packages and follows the normal19
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configure, build and install steps. The first step is to configure20
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the package, which is done by running the configure shell script:23
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./configure24
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To build the device-specific kernel modules from the git tree:24
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By default, libdrm will install into the /usr/local/ prefix. If you25
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want to install this DRM to replace your system copy, pass26
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--prefix=/usr and --exec-prefix=/ to configure. If you are building27
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libdrm from a git checkout, you first need to run the autogen.sh28
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script. You can pass any options to autogen.sh that you would other29
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wise pass to configure, or you can just re-run configure with the30
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options you need once autogen.sh finishes.26
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cd linux-core/28
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make29
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cp *.ko /lib/modules/VERSION/kernel/drivers/char/drm/30
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(where VERSION is your kernel version: uname -f)32
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Next step is to build libdrm:31
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Or,33
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cd bsd-core/34
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make35
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copy the kernel modules to the appropriate place36
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Tips & Trouble-shooting40
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1. You'll need kernel sources. If using Fedora Core 5, for example, you may43
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need to install RPMs such as:44
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kernel-smp-devel-2.6.15-1.2054_FC5.i686.rpm46
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kernel-devel-2.6.15-1.2054_FC5.i686.rpm47
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etc.48
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2. You may need to make a symlink from /lib/modules/VERSION/build to your51
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kernel sources in /usr/src/kernels/VERSION (where version is `uname -r`):52
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cd /lib/modules/VERSION54
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ln -s /usr/src/kernels/VERSION build55
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3. If you've build the kernel modules but they won't load because of an58
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error like this:59
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$ /sbin/modprobe drm61
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FATAL: Error inserting drm (/lib/modules/2.6.15-1.2054_FC5smp/kernel/drivers/char/drm/drm.ko): Invalid module format62
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And 'dmesg|tail' says:64
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drm: disagrees about version of symbol struct_module 66
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Try recompiling your drm modules without the Module.symvers file.68
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That is rm the /usr/src/kernels/2.6.15-1.2054_FC5-smp-i686/Module.symvers69
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file (or rename it). Then do a 'make clean' before rebuilding your drm70
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modules.36
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and once make finishes successfully, install the package using71
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make install72
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If you are install into a system location, you will need to be root to41
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perform the install step.