wireless-tools for linux-devkit on AM335x Starter Kit

John,

You can always use -I and -L compiler options to pull in additional headers and libraries.  You should also look at http://processors.wiki.ti.com/index.php/Sitara_Linux_SDK_GCC_Toolchain which covers how to use the environment-setup script for cross compiling libraries.

Chase

i tried what you said before posting. 

i'm still stuck here:

main.c includes <iwlib.h>

iwlib.h is not part of linuxdevkit.

i would use buildroot, but buildroot cannot provide a compiler for the processor.

./arm-arago-linux-gnueabi-gcc -I../wireless_tools.29/ -o AM335x /home/john/files/main.c

/tmp/ccGDDKWw.o: In function `helpgetAPMacAddress':
ekahauRTLS.c:(.text+0x2f4): undefined reference to `iw_sockets_open'
/tmp/ccGDDKWw.o: In function `getTime':
ekahauRTLS.c:(.text+0x8dc): undefined reference to `clock_gettime'
/tmp/ccGDDKWw.o: In function `get_available_networks':
ekahauRTLS.c:(.text+0x9e8): undefined reference to `iw_sockets_open'
ekahauRTLS.c:(.text+0xb94): undefined reference to `iw_init_event_stream'
ekahauRTLS.c:(.text+0xba8): undefined reference to `iw_get_range_info'
ekahauRTLS.c:(.text+0xbc4): undefined reference to `iw_extract_event_stream'
ekahauRTLS.c:(.text+0xd04): undefined reference to `iw_freq2float'
ekahauRTLS.c:(.text+0xd3c): undefined reference to `iw_freq2float'
collect2: ld returned 1 exit status

You error seems to be in the ld step.  You should probably provide a -L flag that points to the library as well.

thank you for your reply

first i compiled wireless tools with:

./arm-arago-linux-gnueabi-gcc -c -fPIC ../wireless_tools.29/iwlib.c

./arm-arago-linux-gnueabi-gcc -shared -o iwlib.so iwlib.o

the i moved them into the lib directory

mv iwlib.o iwlib.so ../arm-arago-linux-gnueabi/lib/

still gcc doesnt see the library:

./arm-arago-linux-gnueabi-gcc -I../wireless_tools.29/ -o test /home/john/files/main.c -liw

/home/john/ti-sdk-am335x-evm-05.05.00.00/linux-devkit/bin/../lib/gcc/arm-arago-linux-gnueabi/4.5.3/../../../../arm-arago-linux-gnueabi/bin/ld: cannot find -liw
collect2: ld returned 1 exit status 

John,

Are you sure the arm-arago-linux-gnueabi/lib directory is in your LD_LIBRARY_PATH?  You could use the -L option to add this library path to be sure.

Chase

Chase, 

i tried adding the -L option pointing to the folder containing the .o and .so files. I got errors like cannot find declaration of __iw_struct__. Sorry for the inaccuracy im not in the office right now.

 I think i am missing a thing or two here. For convenience i always used buildroot to take care of the library part. But i cannot get buildroot to produce a compiler  the AM335x accepts. should be a cortex-a8 little endian right ? 

i would purchase the codesourcery thing, if it would be sure to have library i am missing. I also suspect the linux-devkit provided is missing time.h.

are there any toolchains ti recommends? i would try them also.