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My goal is to learn to program device drivers on linux. I have three promblems in my way. 1. I´m new to linux 2. I´ve only programmed applications on windows ...
  1. 03-21-2008 #1
    a10
    a10 is offline
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    Aug 2007
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    Smile Compilation questions (my own stupidity)

    My goal is to learn to program device drivers on linux. I have three promblems in my way.

    1. I´m new to linux

    2. I´ve only programmed applications on windows

    3. I´ve never actually compiled anything outside of an IDE (this one is my biggest problem)

    I´m reading through a linux device drivers howto and I immediately ran into a problem. I don´t know how to compile the very first example. Without a nice GUI button that says ¨compile¨ or ¨build¨ I´m stuck.

    I thought That it should be self explanatory so I opened a terminal within the directory of the .c file and wrote this:
    Code:
     gcc -c hellomod.c -I /usr/src/linux-headers-2.6.22-14-generic/include/
    And I got this nice little output:
    Code:
    In file included from /usr/src/linux-headers-2.6.22-14-generic/include/asm/bitops.h:9,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/bitops.h:9,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/thread_info.h:20,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/preempt.h:9,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:49,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/alternative.h:9: error: expected specifier-qualifier-list before ‘u8’
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/linux/bitops.h:9,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/thread_info.h:20,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/preempt.h:9,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:49,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/bitops.h:244: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/asm/system.h:7,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:57,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:213: error: expected declaration specifiers or ‘...’ before ‘u8’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:213: error: expected declaration specifiers or ‘...’ before ‘u8’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:214: error: expected declaration specifiers or ‘...’ before ‘u16’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:214: error: expected declaration specifiers or ‘...’ before ‘u16’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:215: error: expected declaration specifiers or ‘...’ before ‘u32’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:215: error: expected declaration specifiers or ‘...’ before ‘u32’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h: In function ‘cmpxchg_386’:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:222: error: too many arguments to function ‘cmpxchg_386_u8’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:224: error: too many arguments to function ‘cmpxchg_386_u16’
/usr/src/linux-headers-2.6.22-14-generic/include/asm/cmpxchg.h:226: error: too many arguments to function ‘cmpxchg_386_u32’
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h: At top level:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:290: error: expected declaration specifiers or ‘...’ before ‘bool’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h: In function ‘double_spin_lock’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:294: error: ‘l1_first’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:294: error: (Each undeclared identifier is reported only once
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:294: error: for each function it appears in.)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h: At top level:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:309: error: expected declaration specifiers or ‘...’ before ‘bool’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h: In function ‘double_spin_unlock’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:313: error: ‘l1_taken_first’ undeclared (first use in this function)
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:86,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:22,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/asm/atomic.h:5,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:326,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_zero’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:134: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:138: warning: incompatible implicit declaration of built-in function ‘memset’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_fill’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:147: warning: incompatible implicit declaration of built-in function ‘memset’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:149: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_copy’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:155: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:159: warning: incompatible implicit declaration of built-in function ‘memcpy’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_and’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:166: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_or’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:175: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_xor’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:184: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_andnot’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:193: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_complement’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:202: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_equal’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:211: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_intersects’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:220: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_subset’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:229: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_empty’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:237: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_full’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:245: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_weight’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:253: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_shift_right’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:261: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h: In function ‘bitmap_shift_left’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/bitmap.h:270: error: ‘BITS_PER_LONG’ undeclared (first use in this function)
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:22,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/asm/atomic.h:5,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:326,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: At top level:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:88: error: expected specifier-qualifier-list before ‘DECLARE_BITMAP’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpu_set’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:94: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpu_clear’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:100: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_setall’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:106: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_clear’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:112: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpu_test_and_set’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:121: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_and’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:128: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:128: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:128: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_or’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:135: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:135: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:135: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_xor’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:142: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:142: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:142: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_andnot’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:150: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:150: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:150: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_complement’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:157: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:157: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_equal’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:164: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:164: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_intersects’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:171: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:171: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_subset’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:178: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:178: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_empty’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:184: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_full’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:190: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_weight’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:196: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_shift_right’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:204: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:204: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_shift_left’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:212: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:212: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpumask_scnprintf’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:273: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpumask_parse_user’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:281: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpulist_scnprintf’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:289: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpulist_parse’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:295: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpu_remap’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:303: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:303: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h: In function ‘__cpus_remap’:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:311: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:311: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:311: error: ‘cpumask_t’ has no member named ‘bits’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/cpumask.h:311: error: ‘cpumask_t’ has no member named ‘bits’
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/asm/atomic.h:5,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/spinlock.h:326,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:9,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h: At top level:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:83: error: ‘CONFIG_X86_L1_CACHE_SHIFT’ undeclared here (not in a function)
/usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:83: error: requested alignment is not a constant
/usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:427: warning: ‘struct pt_regs’ declared inside parameter list
/usr/src/linux-headers-2.6.22-14-generic/include/asm/processor.h:427: warning: its scope is only this definition or declaration, which is probably not what you want
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:10,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/list.h:970:2: warning: #warning "don't include kernel headers in userspace"
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/asm/local.h:4,
                 from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:19,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/percpu.h:72: error: expected declaration specifiers or ‘...’ before ‘gfp_t’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/percpu.h:78: error: expected declaration specifiers or ‘...’ before ‘gfp_t’
/usr/src/linux-headers-2.6.22-14-generic/include/linux/percpu.h:84: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
In file included from /usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:21,
                 from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/asm/module.h:64:2: error: #error unknown processor family
In file included from hellomod.c:2:
/usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:48: error: field ‘attr’ has incomplete type
/usr/src/linux-headers-2.6.22-14-generic/include/linux/module.h:59: error: field ‘kobj’ has incomplete type
hellomod.c: In function ‘hello_init’:
hellomod.c:6: error: ‘KERN_ALERT’ undeclared (first use in this function)
hellomod.c:6: error: expected ‘)’ before string constant
hellomod.c: In function ‘hello_exit’:
hellomod.c:11: error: ‘KERN_ALERT’ undeclared (first use in this function)
hellomod.c:11: error: expected ‘)’ before string constant
hellomod.c: At top level:
hellomod.c:13: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__attribute_used__’
hellomod.c:14: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__attribute_used__’
    Longest Error message I´ve ever read. It makes me chuckle

    Any help Is desperately needed any greatly appreciated.
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  2. 03-22-2008 #2
    a10
    a10 is offline
    Just Joined!
    Join Date
    Aug 2007
    Posts
    16
    Now I wrote:
    Code:
    make hellomod
    and I recieved this output:
    Code:
    cc     hellomod.c   -o hellomod
hellomod.c:1:24: error: linux/init.h: No such file or directory
hellomod.c:2:26: error: linux/module.h: No such file or directory
hellomod.c:3: error: expected declaration specifiers or ‘...’ before string constant
hellomod.c:3: warning: data definition has no type or storage class
hellomod.c: In function ‘hello_init’:
hellomod.c:6: error: ‘KERN_ALERT’ undeclared (first use in this function)
hellomod.c:6: error: (Each undeclared identifier is reported only once
hellomod.c:6: error: for each function it appears in.)
hellomod.c:6: error: expected ‘)’ before string constant
hellomod.c: In function ‘hello_exit’:
hellomod.c:11: error: ‘KERN_ALERT’ undeclared (first use in this function)
hellomod.c:11: error: expected ‘)’ before string constant
hellomod.c: At top level:
hellomod.c:13: warning: data definition has no type or storage class
hellomod.c:13: warning: parameter names (without types) in function declaration
hellomod.c:14: warning: data definition has no type or storage class
hellomod.c:14: warning: parameter names (without types) in function declaration
make: *** [hellomod] Error 1
    what am I doing wrong?

    EDIT:
    Seriously Im on an active linux programming forum and NO ONE knows how to compile something???
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