Programming :: Error: Function Undeclared / But It Is Declared?
Apr 20, 2010
I'm learning how to program kernel drivers, and I'm making a hello world module for that. But I can't find the cause of some errors... My module as three files:
I hope to get your suggestions to solve my problem. I install Ubuntu8.10 in my notebook last week.I should install drcom-1.4.7 to get through to the internet,while i tried many times but failed like this:
kernel cannot support the drcom version.so i tried to install drcom-1.4.4,but problem also occured:
readconf.c: In function __parseopt: readconf.c:489: error: LONG_MIN undeclared (first use in this function) readconf.c:489: error: (Each undeclared identifier is reported only once readconf.c:489: error: for each function it appears in.)
i have to find time in nanosecond of a particular process and for that i am using clock_gettime() function.i tried different codes i got from net but getting same error Quote:error: �CLOCK_PROCESS_CPUTIME_ID� undeclared (first use in this function)i have included relavent header file of time also. and complied the whole code that i got from net. that was working fine and giving output. but when i use some of the relavent code that i need it gives me this error. plz tell me am i missing something aur using the code in a wrong way?heres my code!
I have a program with a variable named current, but it is not declared. The syntax is current -> othervariable. Theoreticaly there should be no problem with this program. Just wondering what woudl cause this? Which linux include file is current supposed to be declared in?
i m doing a program to open a file, however, there is error saying that 'File' undeclared. but I thought File is a type like int or char, isnt it? below is my codes:
I tried to load a simple driver program. I am using RHEL5. When I tried to compile my 'driver.c' program it shows the following error:
[root@jameslee ~]# gcc -c device.c device.c:1:25: error: linux/module.h: No such file or directory device.c: In function 'init_module': device.c:6: error: 'KERN_INFO' undeclared (first use in this function) device.c:6: error: (Each undeclared identifier is reported only once device.c:6: error: for each function it appears in.) device.c:6: error: expected ')' before string constant device.c: In function 'cleanup_module': device.c:12: error: 'KERN_INFO' undeclared (first use in this function) device.c:12: error: expected ')' before string constant
I'm trying to compile a package of OpenKiosk call NodeView on Ubuntu 10.04, I finally manage to run the 1rs. step of 3 with no problem at all, that I have to do to install this program:
Quote:
1rt - ./configure --prefix=/usr 2nd - make 3rd - sudo make install
Now when I try to run make I get this error:
Code: $ make cd xmlrpc++0.7 && make -f Makefile make[1]: Entering directory `/home/user/Desktop/nodeview-2.0.3/xmlrpc++0.7' g++ -c -pipe -g -Wall -W -O2 -I/usr/share/qt3/mkspecs/default -I. -o .obj/XmlRpcSocket.o src/XmlRpcSocket.cpp code....
I'm trying to compile the hidtouch driver, but hit a snag. The error I get is
[code]....
Context: this is the driver for the touchscreen attached to an LTSP client. The server uses the AMD64 arch, the client uses the 1386 arch, both Debian. The client does start, but lacking a pointer device the pointer is useless. The build takes place on the server, in the i386 chroot of the LTSP setup. Basically, I'm stuck now...
I have install the dependiencies, by running the command sudo yum install qt4-devel jack-audio-connection-kit-devel successfully done (using fedora 11) After trying to build as [ajitj@fedora11 src]$ ./build But getting the error as bellow: (I have put some part of the lines)
../externals/includes/rtaudio-4.0.6/RtAudio.cpp:6164: error: �state� was not declared in this scope ../externals/includes/rtaudio-4.0.6/RtAudio.cpp:6164: error: �SND_PCM_STATE_XRUN� was not declared in this scope ../externals/includes/rtaudio-4.0.6/RtAudio.cpp:6166: error: �snd_pcm_prepare� was not declared in this scope
Code: #include<iostream.h> #include<stdio.h> main() { int num1, num2, sum; code....
I search the answer to my problem in various forums but I can't solve the problem.I think that is due to I need some package or that I don't install the necessary libraries.
Code: setproctitle.c: In function 'compat_init_setproctitle': setproctitle.c:100: warning: implicit declaration of function 'strlen' setproctitle.c:100: warning: incompatible implicit declaration of built-in function 'strlen' setproctitle.c:104: warning: incompatible implicit declaration of built-in function 'strlen' setproctitle.c:108: error: 'argv_start' undeclared (first use in this function) code....
different python module for playing audio similar problem. This time pyAudiere (sorry for sounding a little bored by this, but I had not much success of late) Ok, I am trying to install Audiere which doesnt work. I download the dependencies (libaudiere), then I extract the tarball download from their website. then I followed a procedure from this website because that was the only one I could find (documentation is a little sparse in that compartment unfortunately) from the terminal I write
bash-4.1# ./configure checking for a BSD-compatible install... /bin/ginstall -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk
I'm trying to create a program from 2 files - main.cpp that contains the main function, and modules.c that contains the definitions of the functions that are called in main(). modules.c only contain function definitions, no main function.
My Makefile is as follows:
Code:
I have included "modules.h", which contains all the function declarations, in my main.cpp.
When I try to make using this Makefile, I get the error
Code:
If I switch the order of modules.o and main.o in my $(TARGET) line, then I get errors that say "undefined reference to" the functions I have defined in modules.c, in main.cpp.
I am doing some Linux kernel programming for my research project. I need to record the timestamp (by using cpuid and rdtsc) when an interrupt handler (top half) is first invoked. Due to the time critical nature of the problem itself, I have to do the timestamping inside the interrupt handler itself (the first operation when the handler is called). However, I understand that tasks that are not so time critical should be deferred to a tasklet function (bottom half) for processing because other interrupts are disabled in a (top-half) interrupt handler. I am currently out of idea on how I can pass the timestamp information that I have obtained in the interrupt handler to the corresponding tasklet function.
I wrote a test program for learning usage of realloc() and I thin I did everything right but I get this error exactly with my 4th time that while tries to reallocate memory in MakeDSt function for DSt->SArray:
I recently was pointed to [URL] in another thread and ran into a problem: What header file do I need to download to write the code in the documentation? Apparently no 'bignum.h' file on the Internet declares the "BN_ULONG" macro or "BN_BITS2" bit chunks.
I assumed that the error was due to the difference between the 1st argument and 2nd argument, However, changing the difference to the accepted dns message size (512 bytes) or even to no difference at all did nothing to remove the error.
Further, I am trying to check the output after having first compressed a domain name using dn_comp into *out_rr. This function call is in order to check whether the compression is happening correctly.
i'am tring to use generic netlink and can't find function for blocking not busy waiting receive. I'll try to explain myself. Generic netlink receive mechanism based on callback function - when module receives something,this function invoked. But this is not so good if you need to send something and receive answer. I mean something like that :
sendmsg(); if(recvmsg() < 0) goto err; I need generic netlink recv() function, or some mechanism to implement it. I just want to stay in "recvmsg()" function until i have answer(until call_back function invoked).
