解决：Requested 'libdrm_radeon >= 2.4.56' but version of libdrm_radeon is 2.4.52

checking for NOUVEAU... yes
checking for RADEON... no
configure: error: Package requirements (libdrm_radeon >= 2.4.56) were not met:
Requested 'libdrm_radeon >= 2.4.56' but version of libdrm_radeon is 2.4.52

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables RADEON_CFLAGS
and RADEON_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

解决方法：

下载源代码，编译安装libdrm。点此下载libdrm-2.4.58.tar.gz，安装步骤：

sudo tar -xvf libdrm-2.4.58.tar.gz
cd libdrm-2.4.58/
sudo ./configure
sudo make
sudo make install