you have to define __KERNEL__ before compiling any kernel code.
Regards
Mohanlal
----- Original Message -----
From: "l x" <whereisit28@yahoo.com>
To: <kernelnewbies@nl.linux.org>
Sent: Wednesday, May 12, 2004 12:26 AM
Subject: Help - questions on Linux SCSI low-level driver
> Hi,
>
> To make sure we can integrate the functionalities of the Linux SCSI
low-level driver into an existing module, a dummy detect( ) (the first
function called from Linux SCSI mid-level driver) and "hosts.h" are added
into hello_world module (attached bellow).
>
> However, when compiling it, I got lots of errors (see bellow please). This
is probably not the regular way to create a low-level driver but we have to
do it this way to use/work with our existing modules. How can we create a
SCSI low-level driver and compile it from the command line by using normal
make/gcc (without using "make menuconfig", "make modules", etc.)? Do I miss
any common setups/configurations in this particular example? I'm not very
familiar with the stuff in this area. Any suggestions/hints would be
appreciated.
>
> Thank,
>
> T.
>
> ######################### hello_world #########################
> #define MODULE
> #include <linux/module.h>
> #include </usr/src/linux-2.4.20-8/drivers/scsi/hosts.h>
>
> int init_module(void)
> {
> printk("<0> Hello, world\n");
> return 0;
> }
>
> int detect(scsi_host_template * shtp)
> {
> return 0;
> }
>
> void cleanup_module(void)
> {
> printk("<0> Goodbye cruel world\n");
> }
> ###################### end of hello_world ######################
>
>
> ##################### compile errors below #####################
>
> [root@localhost my_scsi_debug]#
> [root@localhost my_scsi_debug]# gcc -c -isystem
> /lib/modules/`uname -r`/build/include/ hello_world.c
> In file included from /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:29,
> from hello_world.c:3:
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:47: parse error before
"off_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:51: parse error before
"off_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:57: parse error before
"mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:59: parse error before
"uid"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:60: parse error before
"gid"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:72: parse error before
"rdev"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:91: parse error before
"filldir_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:93: parse error before
"mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:110: parse error
before "filldir_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:143: parse error
before "mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:148: parse error
before "mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h: In function
`create_proc_read_entry':
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:151: `name' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:151: (Each undeclared
identifier is reported only once
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:151: for each function
it appears in.)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:151: `mode' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:151: `base' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:153: dereferencing
pointer to incomplete type
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:154: dereferencing
pointer to incomplete type
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h: At top level:
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:160: parse error
before "mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h: In function
`create_proc_info_entry':
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:162: `name' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:162: `mode' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:162: `base' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:163: dereferencing
pointer to incomplete type
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h: At top level:
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:168: parse error
before "mode_t"
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h: In function
`proc_net_create':
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:170: `name' undeclared
(first use in this function)
> /lib/modules/2.4.20-8/build/include/linux/proc_fs.h:170: `mode' undeclared
(first use in this function)
> In file included from hello_world.c:3:
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h: At top level:
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:75: parse error before
"off_t"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:100: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:107: warning: `struct
Scsi_Host' declared inside parameter list
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:114: warning: `struct
Scsi_Host' declared inside parameter list
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:119: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:132: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:145: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:145: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:145: `queuecommand' declared
as function returning a function
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:145: warning: no semicolon at
end of struct or union
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:162: warning: `struct
Scsi_Host' declared inside parameter list
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:163: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:164: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:165: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:166: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:185: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:185: `abort' redeclared as
different kind of symbol
> <built-in>:0: previous declaration of `abort'
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:200: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:215: parse error before
"kdev_t"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:221: parse error before
"Scsi_Device"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:221: warning: `struct
Scsi_Host' declared inside parameter list
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:270: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:280: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:287: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:292: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:294: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:301: parse error before '}'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:301: warning: data definition
has no type or storage class
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:320: parse error before
"Scsi_Device"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:320: warning: no semicolon at
end of struct or union
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:329: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:331: warning: data definition
has no type or storage class
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:332: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:332: warning: data definition
has no type or storage class
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:355: `base' used prior to
declaration
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:392: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:393: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:394: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:395: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:400: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:405: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:411: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:417: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:423: parse error before ':'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:425: parse error before
"Scsi_Device"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:440: parse error before '}'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:449: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:450: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:450: warning: data definition
has no type or storage class
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:469: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:469: warning: data definition
has no type or storage class
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:471: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:480: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h: In function
`scsi_set_pci_device':
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:489: dereferencing pointer to
incomplete type
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h: At top level:
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:497: parse error before
"uint"
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:520: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:524: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:525: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:526: parse error before '*'
token
> /usr/src/linux-2.4.20-8/drivers/scsi/hosts.h:530: parse error before '*'
token
> hello_world.c:11: parse error before '*' token
> [root@localhost my_scsi_debug]#
>
>
>
>
>
> ---------------------------------
> Do you Yahoo!?
> Win a $20,000 Career Makeover at Yahoo! HotJobs
>
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/
