Hi,
alsa-drivers-HEAD does not compile against recent RHE5 kernels, such as ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-53.1.21.el5.src.rpm
The problem is mixed up with the test for init_utsname in configure.in:
dnl Check for init_utsname... if test "$kversion.$kpatchlevel" = "2.6" -a $ksublevel -ge 19; then CONFIG_HAVE_INIT_UTSNAME=1 else AC_MSG_CHECKING(for init_utsname) init_utsname="0" ac_save_CFLAGS="$CFLAGS" ac_save_CC="$CC" CFLAGS="$KERNEL_CHECK_CFLAGS -Werror" CC=$KCC AC_TRY_COMPILE([ #define __KERNEL__ #include <linux/config.h> #include <linux/utsname.h> ],[ int *x = (int *)init_utsname(); *x = 0; ], AC_MSG_RESULT(yes);init_utsname="1", AC_MSG_RESULT(no);init_utsname="0", AC_MSG_RESULT(unknown);init_utsname="0" ) CFLAGS=$ac_save_CFLAGS CC=$ac_save_CC CONFIG_HAVE_INIT_UTSNAME=$init_utsname fi dnl AC_SUBST(CONFIG_HAVE_INIT_UTSNAME) if test "$CONFIG_HAVE_INIT_UTSNAME" = "1"; then AC_DEFINE(CONFIG_HAVE_INIT_UTSNAME) fi
The problem is that <linux/config.h> does not exist in recent kernel.org and RH 2.6.18 kernels. The AC_TRY_COMPILE produces a negative result (because of a warning, treated as an error, about the missing linux/config.h file), which then causes CONFIG_HAVE_INIT_UTSNAME to NOT be defined.
This results in a compile failure in acore/info_oss.c .
I'm not sure how this should be fixed. I'm also not sure why someone else hasn't noticed it already, since it affects me with a standard kernel.org kernel. Therefore, here is my test procedure.
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2 tar -xjf linux-2.6.25.tar.bz2 cd linux-2.6.25 make defconfig make modules_prepare cd ..
(This next step takes *forever*) git clone git://git.alsa-project.org/alsa-kernel.git alsa-kernel
git clone git://git.alsa-project.org/alsa-driver.git alsa-driver cd alsa-driver ./gitcompile --with-kernel=../linux-2.6.25 --with-build=../linux-2.6.25
This currently produces an error: No alsa-kernel is found. Please specify the correct location via ALSAKERNELDIR environment variable.
So instead I run ALSAKERNELDIR=../alsa-kernel ./gitcompile --with-kernel=../linux-2.6.25 --with-build=../linux-2.6.25 and I get the same error.
when I repeat the above with an alsa-kernel from hg, I do not get this problem (in fact, alsa-driver compiles completely on the Ubuntu 7.10 machine I'm using for this test).
So, I've got perhaps two different problems here. I need a hand.
Ben Stanley.