Re: Building user applications with thread library

[hoefle marco <marco.hoefle@nanotronic.ch>]

On Wed, 2009-04-29 at 19:59 +0200, Martin Fuzzey wrote:
> On Wed, Apr 29, 2009 at 12:27 PM, hoefle marco
> <marco.hoefle@nanotronic.ch> wrote:
> > Hello,
> > A small part of the application (it consists of several daemons) uses
> > the pthread library.
> > Without specifying the library I get this:
> >
> > arm-linux-gnu-gcc -O0 -I/usr/include   -c -o ledd.o ledd.c
> > .
> > .
> > ledd.c:(.text+0x139c): undefined reference to `pthread_create'
> > .
> > Does anybody know how to link against the pthread library in emdebian?
> >
> 
> try adding -lpthread  to your command line above.
> You shouldn't need the -I option either.
> 
> Here's how I copiled usbtest (that needs libpthread):
> arm-linux-gnu-gcc -Wall -g -lpthread -o testusb testusb.c
> 
> Martin

Hello Martin,
I tried to compile testusb (http://www.linux-usb.org/usbtest/testusb.c)
as well as you did (good news, I got the USB driver working):

hoefle@wks02-lin:/mnt/ext3_data/projects/hasler/emdebian_eval/testusb$
arm-linux-gnu-gcc -Wall -g -lpthread -o testusb testusb.c
In file included from /usr/arm-linux-gnu/include/errno.h:36,
                 from testusb.c:27:
/usr/arm-linux-gnu/include/bits/errno.h:25:26: error: linux/errno.h: No
such file or directory
In file included from /usr/arm-linux-gnu/include/sys/ioctl.h:27,
                 from testusb.c:33:
/usr/arm-linux-gnu/include/bits/ioctls.h:24:24: error: asm/ioctls.h: No
such file or directory
testusb.c:34:32: error: linux/usbdevice_fs.h: No such file or directory
testusb.c:60: error: expected specifier-qualifier-list before ‘__u8’
testusb.c: In function ‘is_testdev’:
.
.
.

Do I miss something? Don't I have to specify at least the kernel
headers?