On Tue, Dec 15, 2009 at 05:31:01PM +0100, Niko Lau wrote: > 2009/12/15 Lennart Sorensen <[email protected]>: > > On Tue, Dec 15, 2009 at 05:16:05PM +0100, Niko Lau wrote: > >> I want to use the libv4l2 for my arm platform with uclibc cross compiler. > >> When I link a appl with that lib I get the following error: > >> arm-linux-uclibc-gcc -Wall -O2 -g -I../libv4l2/include > >> -L../libv4l2/lib -o capture capture.c -lv4l2 -lv4lconvert > >> ../libv4l2/lib/libv4lconvert.so: undefined reference to `shm_open' > >> collect2: ld returned 1 exit status > >> make: *** [test] Fehler 1 > >> > >> The lib is built with the same compiler without any error. > >> Can someone give me a hint what the problem is. Since it works with a > >> glibc compiler i think the problem is the uclibc. > > > > The man page (for the glibc version) says you have to link with -lrt. > > I don't see you doing that. Do you have to? Does uclibc have such > > a thing and does it do shm_open? I guess it must or the header files > > would have failed yoiur earlier compile already. > > > > -- > > Len Sorensen > > > > The -lrt flag is set during libv4lconvert building. I can see shm_open > in the include file (/sys/mman.h) > so i think uclibc has shm_open.
Well I don't see -lrt in the gcc line above. Fix that and it should build I suspect. -- Len Sorensen _______________________________________________ uClibc mailing list [email protected] http://lists.busybox.net/mailman/listinfo/uclibc
