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Compile error including asm/uaccess.h

DISCUSSION Stephen Torri 2 participants 2 messages May 13, 2003 – May 14, 2003

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Stephen Torri

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GLIBC VERSION: 2.3.1

HOST MACHINE and OPERATING SYSTEM: i686 Gentoo Linux 1.4.2.9

KERNEL VERSION: 2.4.18

TARGET MACHINE and OPERATING SYSTEM, if different from HOST: Same

COMPILER NAME AND VERSION (AND PATCHLEVEL): g++ 3.2.2

DOES THE PROBLEM AFFECT:
COMPILATION? Yes.
LINKING? No
EXECUTION? No
OTHER (please specify)? No

SYNOPSIS:

Receiving a compiler error when attempting to include asm/uacccess.h

DESCRIPTION:

I am compiling a program that is written in C++ so the g++ compiler is being used to compile the source. On of the headers of a dependent library is including asm/uaccess.h. When I attempt to compile this program I get parse errors.

====== Errors (C++) ==========

In file included from /usr/include/linux/sched.h:14,
from /usr/include/asm/uaccess.h:8,
from test.cpp:1:
/usr/include/linux/timex.h:173: field `time' has incomplete type In file included from /usr/include/linux/sched.h:17,
from /usr/include/asm/uaccess.h:8,
from test.cpp:1:
/usr/include/asm/system.h:238: parse error before new' /usr/include/asm/system.h: In function long unsigned int __cmpxchg(...)':
/usr/include/asm/system.h:241: `size' undeclared (first use this function)
/usr/include/asm/system.h:241: (Each undeclared identifier is reported only
once for each function it appears in.)
/usr/include/asm/system.h:245: parse error before )' token /usr/include/asm/system.h:251: parse error before )' token /usr/include/asm/system.h:257: parse error before )' token /usr/include/asm/system.h:261: old' undeclared (first use this function)
In file included from /usr/include/asm/smp.h:15,

                 from /usr/include/linux/smp.h:14,
                 from /usr/include/linux/sched.h:23,
                 from /usr/include/asm/uaccess.h:8,
                 from test.cpp:1:

/usr/include/asm/fixmap.h: At global scope:
/usr/include/asm/fixmap.h:77: type specifier omitted for parameter `pgprot_t'
/usr/include/asm/fixmap.h:77: parse error before `)' token In file included from /usr/include/asm/smp.h:21,

                 from /usr/include/linux/smp.h:14,
                 from /usr/include/linux/sched.h:23,
                 from /usr/include/asm/uaccess.h:8,
                 from test.cpp:1:

/usr/include/asm/apic.h:85: pm_dev_t' was not declared in this scope /usr/include/asm/apic.h:85: parse error before long'
In file included from /usr/include/linux/sched.h:23,
from /usr/include/asm/uaccess.h:8,
from test.cpp:1:
/usr/include/linux/smp.h:29: parse error before `)' token In file included from /usr/include/asm/processor.h:11,

                 from /usr/include/linux/sched.h:87,
                 from /usr/include/asm/uaccess.h:8,
                 from test.cpp:1:

/usr/include/asm/math_emu.h: In function `void FASTCALL(...)':
/usr/include/asm/math_emu.h:6: non-local function `int restore_i387_soft(void*,
FASTCALL(...)::_fpstate*)' uses local type `FASTCALL(...)::_fpstate'
/usr/include/asm/math_emu.h:7: non-local function `int save_i387_soft(void*,
FASTCALL(...)::_fpstate*)' uses local type `FASTCALL(...)::_fpstate'
In file included from /usr/include/linux/sched.h:87,
from /usr/include/asm/uaccess.h:8,
from test.cpp:1:
/usr/include/asm/processor.h:73: non-local variable `FASTCALL(...)::cpuinfo_x86
boot_cpu_data' uses local type `FASTCALL(...)::cpuinfo_x86'
/usr/include/asm/processor.h:77: non-local variable `FASTCALL(...)::cpuinfo_x86
cpu_data[]' uses local type `FASTCALL(...)::cpuinfo_x86'
/usr/include/asm/processor.h:97: non-local function `void
identify_cpu(FASTCALL(...)::cpuinfo_x86*)' uses local type ` FASTCALL(...)::cpuinfo_x86'
/usr/include/asm/processor.h:98: non-local function `void
print_cpu_info(FASTCALL(...)::cpuinfo_x86*)' uses local type ` FASTCALL(...)::cpuinfo_x86'
/usr/include/asm/processor.h:126: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `void cpuid(int, int*, int*, int*,
int*)':
/usr/include/asm/processor.h:139: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `unsigned int cpuid_eax(unsigned
int)':
/usr/include/asm/processor.h:149: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `unsigned int cpuid_ebx(unsigned
int)':
/usr/include/asm/processor.h:159: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `unsigned int cpuid_ecx(unsigned
int)':
/usr/include/asm/processor.h:169: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `unsigned int cpuid_edx(unsigned
int)':
/usr/include/asm/processor.h:206: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `void set_in_cr4(long unsigned int)':
/usr/include/asm/processor.h:216: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `void clear_in_cr4(long unsigned
int)':
/usr/include/asm/processor.h:432: non-local function `void
release_thread(clear_in_cr4(long unsigned int)::task_struct*)' uses
local
type `clear_in_cr4(long unsigned int)::task_struct'
/usr/include/asm/processor.h:439: non-local function `void
copy_segments(clear_in_cr4(long unsigned int)::task_struct*, clear_in_cr4(long unsigned int)::mm_struct*)' uses local type ` clear_in_cr4(long unsigned int)::task_struct'
/usr/include/asm/processor.h:440: non-local function `void
release_segments(clear_in_cr4(long unsigned int)::mm_struct*)' uses
local
type `clear_in_cr4(long unsigned int)::mm_struct'
/usr/include/asm/processor.h:446: cannot declare static function inside another
function
/usr/include/asm/processor.h: In function `long unsigned int
thread_saved_pc(clear_in_cr4(long unsigned int)::thread_struct*)':
/usr/include/asm/processor.h:450: non-local function `long unsigned int
get_wchan(clear_in_cr4(long unsigned int)::task_struct*)' uses local
type `
clear_in_cr4(long unsigned int)::task_struct'
/usr/include/asm/processor.h:479: cannot declare static function inside another
function
In file included from /usr/include/asm/uaccess.h:9,
from test.cpp:1:
/usr/include/linux/prefetch.h: In function `void prefetch(const void*)':
/usr/include/linux/prefetch.h:48: cannot declare static function inside another
function
In file included from test.cpp:1:
/usr/include/asm/uaccess.h: In function `void prefetchw(const void*)':
/usr/include/asm/uaccess.h:63: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `int verify_area(int, const void*, long
unsigned int)':
/usr/include/asm/uaccess.h:64: `current' undeclared (first use this function)
/usr/include/asm/uaccess.h:64: `EFAULT' undeclared (first use this function)
/usr/include/asm/uaccess.h:310: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `long unsigned int
__generic_copy_from_user_nocheck(void*, const void*, long unsigned
int)':
/usr/include/asm/uaccess.h:317: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `long unsigned int
__generic_copy_to_user_nocheck(void*, const void*, long unsigned
int)':
/usr/include/asm/uaccess.h:548: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `long unsigned int
__constant_copy_to_user(void*, const void*, long unsigned int)':
/usr/include/asm/uaccess.h:557: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `long unsigned int
__constant_copy_from_user(void*, const void*, long unsigned int)':
/usr/include/asm/uaccess.h:561: `memset' undeclared (first use this function)
/usr/include/asm/uaccess.h:567: cannot declare static function inside another
function
/usr/include/asm/uaccess.h: In function `long unsigned int
__constant_copy_to_user_nocheck(void*, const void*, long unsigned
int)':
/usr/include/asm/uaccess.h:574: cannot declare static function inside another
function

REPEAT BY:

Here a test programs that I did:

#include <asm/uaccess.h>

int main (){
	return 0;
}

SAMPLE FIX/WORKAROUND:

None.

Stephen

Signature · 1 line
Stephen Torri <[email protected]>
#1 lore raw
Quoted 6 lines

#include <asm/uaccess.h>

int main (){
	return 0;
}

Hi stephen:

<asm/uaccess.h> or for that matter any other kernel related header do not contain references to other headers they may need, and this is done on purpose for various reasons least of which is creating faster dependencies information.

In any event, if your purpose is to use any information usefully from these, then you should look into an other file in the kernel code that includes this file and see the headers that are include before it.

Also have a look at the defines that go with compiling this file.

If you are simply verifying the existence of this file in an autoconf configure type script (which may be the case looking at your example code). Then you should write your own test of somesort rather than resorting to AC_CONFIG_HEADER.

Cheers,

Ahmed.

For more info have a look at www.kernelnewbies.org