Ho-Eun Ryu | f0352d4 | 2010-01-04 17:28:06 +0900 | [diff] [blame] | 1 | |
| 2 | DRM README file |
| 3 | |
| 4 | |
| 5 | There are two main parts to this package: the DRM client library/interface |
| 6 | (libdrm.so) and kernel/hardware-specific device modules (such as radeon.ko). |
| 7 | The kernel device modules are not shipped with libdrm releases and should only |
| 8 | be built from the git tree by developers and bleeding-edge testers of |
| 9 | non-Intel hardware. The Intel kernel modules are developed in the Linux |
| 10 | kernel tree. |
| 11 | |
| 12 | |
| 13 | Compiling |
| 14 | --------- |
| 15 | |
| 16 | By default, libdrm and the DRM header files will install into /usr/local/. |
| 17 | If you want to install this DRM to replace your system copy, say: |
| 18 | |
| 19 | ./configure --prefix=/usr --exec-prefix=/ |
| 20 | |
| 21 | Then, |
| 22 | make install |
| 23 | |
| 24 | |
| 25 | To build the device-specific kernel modules from the git tree: |
| 26 | |
| 27 | cd linux-core/ |
| 28 | make |
| 29 | cp *.ko /lib/modules/VERSION/kernel/drivers/char/drm/ |
| 30 | (where VERSION is your kernel version: uname -f) |
| 31 | |
| 32 | Or, |
| 33 | cd bsd-core/ |
| 34 | make |
| 35 | copy the kernel modules to the appropriate place |
| 36 | |
| 37 | |
| 38 | |
| 39 | Tips & Trouble-shooting |
| 40 | ----------------------- |
| 41 | |
| 42 | 1. You'll need kernel sources. If using Fedora Core 5, for example, you may |
| 43 | need to install RPMs such as: |
| 44 | |
| 45 | kernel-smp-devel-2.6.15-1.2054_FC5.i686.rpm |
| 46 | kernel-devel-2.6.15-1.2054_FC5.i686.rpm |
| 47 | etc. |
| 48 | |
| 49 | |
| 50 | 2. You may need to make a symlink from /lib/modules/VERSION/build to your |
| 51 | kernel sources in /usr/src/kernels/VERSION (where version is `uname -r`): |
| 52 | |
| 53 | cd /lib/modules/VERSION |
| 54 | ln -s /usr/src/kernels/VERSION build |
| 55 | |
| 56 | |
| 57 | 3. If you've build the kernel modules but they won't load because of an |
| 58 | error like this: |
| 59 | |
| 60 | $ /sbin/modprobe drm |
| 61 | FATAL: Error inserting drm (/lib/modules/2.6.15-1.2054_FC5smp/kernel/drivers/char/drm/drm.ko): Invalid module format |
| 62 | |
| 63 | And 'dmesg|tail' says: |
| 64 | |
| 65 | drm: disagrees about version of symbol struct_module |
| 66 | |
| 67 | Try recompiling your drm modules without the Module.symvers file. |
| 68 | That is rm the /usr/src/kernels/2.6.15-1.2054_FC5-smp-i686/Module.symvers |
| 69 | file (or rename it). Then do a 'make clean' before rebuilding your drm |
| 70 | modules. |
| 71 | |
| 72 | |