[talent@localhost cdfs-2.4.20-a]$ ./configure
checking for gcc... gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for a BSD-compatible install... /usr/bin/install -c
checking how to run the C preprocessor... gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking linux/fs.h usability... yes
checking linux/fs.h presence... yes
checking for linux/fs.h... yes
checking whether gcc needs -traditional... no
checking for directory with kernel source... /lib/modules/2.6.0-0.1.14custom/build/
checking for kernel version... 0.0.0
checking for kernel module symbol versions... "no"
checking for directory to store kernel modules... /lib/modules/0.0.0/kernel/fs/cdfs
checking for processor type... "unknown"
checking for cdfs version... 2.4.20-a
configure: creating ./config.status
config.status: creating Makefile

[talent@localhost cdfs-2.4.20-a]$ make
gcc -Wall -O2  -DLINUX -DCONFIG_CDFS_VERSION=\"2.4.20-a\"   -I/lib/modules/2.6.0-0.1.14custom/build//include -c audio.c -Wall
In file included from cdfs.h:25,
                 from audio.c:26:
/usr/include/linux/autoconf.h:1:2: #error Invalid kernel header included in userspace
In file included from /usr/include/linux/sched.h:14,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/linux/timex.h:56: error: syntax error before "and"
In file included from /usr/include/linux/timex.h:126,
                 from /usr/include/linux/sched.h:14,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/asm/timex.h:33: error: syntax error before "cacheflush_time"
/usr/include/asm/timex.h:35: error: syntax error before "get_cycles"
In file included from /usr/include/linux/sched.h:14,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/linux/timex.h:147: error: field `time' has incomplete type
In file included from /usr/include/linux/bitops.h:69,
                 from /usr/include/asm/system.h:7,
                 from /usr/include/linux/sched.h:16,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/asm/bitops.h:327:2: warning: #warning This includefile is not available on all architectures.
/usr/include/asm/bitops.h:328:2: warning: #warning Using kernel headers in userspace: atomicity not guaranteed
In file included from /usr/include/linux/signal.h:4,
                 from /usr/include/linux/sched.h:25,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/asm/signal.h:107: error: syntax error before "sigset_t"
/usr/include/asm/signal.h:110: error: syntax error before '}' token
In file included from /usr/include/linux/sched.h:81,
                 from /usr/include/linux/mm.h:4,
                 from /usr/include/linux/locks.h:5,
                 from cdfs.h:35,
                 from audio.c:26:
/usr/include/linux/timer.h:45: error: syntax error before "spinlock_t"
/usr/include/linux/timer.h:53: error: syntax error before '}' token
/usr/include/linux/timer.h:67: error: syntax error before "tvec_base_t"
/usr/include/linux/timer.h:101: error: syntax error before "tvec_bases"
/usr/include/linux/timer.h: In function `init_timer':
/usr/include/linux/timer.h:105: error: dereferencing pointer to incomplete type
/usr/include/linux/timer.h:105: error: dereferencing pointer to incomplete type
/usr/include/linux/timer.h:106: error: dereferencing pointer to incomplete type
/usr/include/linux/timer.h: In function `timer_pending':
/usr/include/linux/timer.h:121: error: dereferencing pointer to incomplete type
In file included from cdfs.h:35,
                 from audio.c:26:
/usr/include/linux/locks.h:8:27: linux/pagemap.h: no such file or directory
In file included from cdfs.h:35,
                 from audio.c:26:
/usr/include/linux/locks.h: In function `wait_on_buffer':
/usr/include/linux/locks.h:19: error: `BH_Lock' undeclared (first use in this function)
/usr/include/linux/locks.h:19: error: (Each undeclared identifier is reported only once
/usr/include/linux/locks.h:19: error: for each function it appears in.)
/usr/include/linux/locks.h:19: error: dereferencing pointer to incomplete type
/usr/include/linux/locks.h:19: error: dereferencing pointer to incomplete type
/usr/include/linux/locks.h: In function `lock_buffer':
/usr/include/linux/locks.h:25: error: `BH_Lock' undeclared (first use in this function)
/usr/include/linux/locks.h:25: error: dereferencing pointer to incomplete type
/usr/include/linux/locks.h: In function `lock_super':
/usr/include/linux/locks.h:39: error: dereferencing pointer to incomplete type
/usr/include/linux/locks.h: In function `unlock_super':
/usr/include/linux/locks.h:44: error: dereferencing pointer to incomplete type
In file included from cdfs.h:40,
                 from audio.c:26:
/usr/include/linux/proc_fs.h: At top level:
/usr/include/linux/proc_fs.h:70: error: syntax error before "atomic_t"
/usr/include/linux/proc_fs.h:73: error: syntax error before '}' token
/usr/include/linux/proc_fs.h:203: error: syntax error before "void"
In file included from audio.c:26:
cdfs.h:42:25: asm/uaccess.h: no such file or directory
In file included from audio.c:26:
cdfs.h:148: warning: `struct super_block' declared inside parameter list
cdfs.h:149: warning: `struct super_block' declared inside parameter list
cdfs.h:153: warning: `struct super_block' declared inside parameter list
cdfs.h:154: warning: `struct super_block' declared inside parameter list
cdfs.h:155: warning: `struct super_block' declared inside parameter list
cdfs.h:156: warning: `struct super_block' declared inside parameter list
cdfs.h:157: warning: `struct super_block' declared inside parameter list
cdfs.h:159: warning: `struct super_block' declared inside parameter list
cdfs.h:161: warning: `struct super_block' declared inside parameter list
cdfs.h:163: warning: `struct super_block' declared inside parameter list
cdfs.h:164: warning: `struct inode' declared inside parameter list
cdfs.h:166: warning: `struct page' declared inside parameter list
cdfs.h:166: warning: `struct file' declared inside parameter list
cdfs.h:167: warning: `struct page' declared inside parameter list
cdfs.h:167: warning: `struct file' declared inside parameter list
cdfs.h:168: warning: `struct page' declared inside parameter list
cdfs.h:168: warning: `struct file' declared inside parameter list
cdfs.h:169: warning: `struct page' declared inside parameter list
cdfs.h:169: warning: `struct file' declared inside parameter list
cdfs.h:170: warning: `struct page' declared inside parameter list
cdfs.h:170: warning: `struct file' declared inside parameter list
cdfs.h:172: warning: `struct page' declared inside parameter list
cdfs.h:172: warning: `struct dentry' declared inside parameter list
In file included from audio.c:27:
/usr/include/asm/byteorder.h:6:2: warning: #warning using private kernel header; include <endian.h> instead!
audio.c: In function `cdfs_make_header':
audio.c:35: warning: implicit declaration of function `strcpy'
audio.c: At top level:
audio.c:61: warning: `struct super_block' declared inside parameter list
audio.c: In function `cdfs_copy_from_cd':
audio.c:66: error: dereferencing pointer to incomplete type
audio.c:108: warning: passing arg 1 of `cdfs_ioctl' from incompatible pointer type
audio.c:110: warning: implicit declaration of function `printk'
audio.c:134: warning: implicit declaration of function `memcpy'
audio.c: At top level:
audio.c:142: warning: `struct inode' declared inside parameter list
audio.c:142: error: conflicting types for `cdfs_cdda_file_read'
cdfs.h:164: error: previous declaration of `cdfs_cdda_file_read'
audio.c: In function `cdfs_cdda_file_read':
audio.c:148: error: dereferencing pointer to incomplete type
audio.c:148: error: dereferencing pointer to incomplete type
audio.c:156: error: dereferencing pointer to incomplete type
audio.c:162: error: dereferencing pointer to incomplete type
audio.c:162: error: dereferencing pointer to incomplete type
audio.c: At top level:
audio.c:169: error: variable `cdfs_cdda_file_operations' has initializer but incomplete type
audio.c:170: error: unknown field `read' specified in initializer
audio.c:170: error: `generic_file_read' undeclared here (not in a function)
audio.c:170: warning: excess elements in struct initializer
audio.c:170: warning: (near initialization for `cdfs_cdda_file_operations')
audio.c:171: error: unknown field `mmap' specified in initializer
audio.c:172: error: `generic_file_mmap' undeclared here (not in a function)
audio.c:172: warning: excess elements in struct initializer
audio.c:172: warning: (near initialization for `cdfs_cdda_file_operations')
audio.c:174: warning: `struct page' declared inside parameter list
audio.c:174: warning: `struct file' declared inside parameter list
audio.c:174: error: conflicting types for `kcdfsd_add_cdda_request'
cdfs.h:168: error: previous declaration of `kcdfsd_add_cdda_request'
audio.c: In function `kcdfsd_add_cdda_request':
audio.c:176: error: dereferencing pointer to incomplete type
audio.c:176: warning: passing arg 2 of `kcdfsd_add_request' from incompatible pointer type
audio.c: At top level:
audio.c:179: warning: `struct page' declared inside parameter list
audio.c:179: warning: `struct file' declared inside parameter list
audio.c:179: error: conflicting types for `kcdfsd_add_cdda_raw_request'
cdfs.h:169: error: previous declaration of `kcdfsd_add_cdda_raw_request'
audio.c: In function `kcdfsd_add_cdda_raw_request':
audio.c:181: error: dereferencing pointer to incomplete type
audio.c:181: warning: passing arg 2 of `kcdfsd_add_request' from incompatible pointer type
audio.c: At top level:
audio.c:184: error: variable `cdfs_cdda_aops' has initializer but incomplete type
audio.c:185: error: unknown field `readpage' specified in initializer
audio.c:186: warning: excess elements in struct initializer
audio.c:186: warning: (near initialization for `cdfs_cdda_aops')
audio.c:188: error: variable `cdfs_cdda_raw_aops' has initializer but incomplete type
audio.c:189: error: unknown field `readpage' specified in initializer
audio.c:190: warning: excess elements in struct initializer
audio.c:190: warning: (near initialization for `cdfs_cdda_raw_aops')
audio.c:169: error: storage size of `cdfs_cdda_file_operations' isn't known
audio.c:184: error: storage size of `cdfs_cdda_aops' isn't known
audio.c:188: error: storage size of `cdfs_cdda_raw_aops' isn't known
make: *** [audio.o] Error 1