I'm trying to manually build libdrm-2.4.13. I passed to the configure script the following arguments: --prefix=/usr --build=i686-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --disable-udev. I get the following error after having issued `make':

/bin/sh ../libtool --tag=CC   --mode=compile x86_64-unknown-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I../../libdrm-2.4.13/tests -I../libdrm  -I ../../libdrm-2.4.13/shared-core -I ../../libdrm-2.4.13/libdrm   -g -O2 -MT drmtest.lo -MD -MP -MF .deps/drmtest.Tpo -c -o drmtest.lo ../../libdrm-2.4.13/tests/drmtest.c
libtool: compile:  x86_64-unknown-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I../../libdrm-2.4.13/tests -I../libdrm -I ../../libdrm-2.4.13/shared-core -I ../../libdrm-2.4.13/libdrm -g -O2 -MT drmtest.lo -MD -MP -MF .deps/drmtest.Tpo -c ../../libdrm-2.4.13/tests/drmtest.c  -fPIC -DPIC -o .libs/drmtest.o
../../libdrm-2.4.13/tests/drmtest.c:34:21: error: libudev.h: No such file or directory
../../libdrm-2.4.13/tests/drmtest.c: In function 'drm_open_matching':
../../libdrm-2.4.13/tests/drmtest.c:65: warning: assignment makes pointer from integer without a cast
../../libdrm-2.4.13/tests/drmtest.c:72: warning: assignment makes pointer from integer without a cast
../../libdrm-2.4.13/tests/drmtest.c:75: error: expected ';' before '{' token
make[2]: *** [drmtest.lo] Error 1
make[2]: Leaving directory `/mnt/clfs/sources/libdrm-build/tests'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/mnt/clfs/sources/libdrm-build/tests'
make: *** [all-recursive] Error 1

I think this is a bug because the build process should not look for libudev.h if I asked for --disable-udev.