Re: [Discuss-gnuradio] Compiling standalone apps

[Kyle Zhou]

have u added /usr/local/lib in your LD_LIBRARY_PATH environment variable?
cheers
kyle
----- Original Message ----- 
From: "Dan Halperin" <address@hidden>
To: <address@hidden>
Sent: Wednesday, October 18, 2006 1:58 PM
Subject: [Discuss-gnuradio] Compiling standalone apps


> Hi,
>
> I must be doing something really stupid. I'm trying to figure out how to
> compile against the C++ libraries.
>
> I copied test_usrp_standard_tx.cc, timestuff.h, and timestuff.c to a new
> folder, then I compiled the application using
>
>     g++ test_usrp_standard_tx.cc timestuff.c -lusrp -Wall
>
> and that created an a.out file just fine. However, when I run ./a.out, I
> get the following error:
>
>     ./a.out: error while loading shared libraries: libusrp.so.0: cannot
> open shared object file: No such file or directory
>
> The outputs of the relevant locates are:
>
> $ locate usrp_standard.h
> /usr/local/include/usrp_standard.h
> $ locate usrp_bytesex.h
> /usr/local/include/usrp_bytesex.h
> $ locate libusrp
> /usr/local/lib/libusrp.so
> /usr/local/lib/libusrp.so.0
> /usr/local/lib/libusrp.la
> /usr/local/lib/libusrp.so.0.0.0
>
> /usr/local/lib looks like this:
>
> $ ls -l
> total 20292
> -rwxr-xr-x  1 root root      851 Oct 10 13:13 libgnuradio-core.la
> -rwxr-xr-x  1 root root      919 Oct 10 13:13 libgnuradio-core-qa.la
> lrwxrwxrwx  1 root root       28 Oct 10 13:13 libgnuradio-core-qa.so ->
> libgnuradio-core-qa.so.0.0.0
> lrwxrwxrwx  1 root root       28 Oct 10 13:13 libgnuradio-core-qa.so.0
> -> libgnuradio-core-qa.so.0.0.0
> -rwxr-xr-x  1 root root  1607312 Oct 10 13:13 libgnuradio-core-qa.so.0.0.0
> lrwxrwxrwx  1 root root       25 Oct 10 13:13 libgnuradio-core.so ->
> libgnuradio-core.so.0.0.0
> lrwxrwxrwx  1 root root       25 Oct 10 13:13 libgnuradio-core.so.0 ->
> libgnuradio-core.so.0.0.0
> -rwxr-xr-x  1 root root 16297556 Oct 10 13:13 libgnuradio-core.so.0.0.0
> -rwxr-xr-x  1 root root      852 Oct 10 13:14 libmblock.la
> -rwxr-xr-x  1 root root      922 Oct 10 13:14 libmblock-qa.la
> -rwxr-xr-x  1 root root     4170 Oct 10 13:14 libmblock-qa.so
> -rwxr-xr-x  1 root root   119553 Oct 10 13:14 libmblock.so
> -rwxr-xr-x  1 root root      767 Oct 10 13:14 libpmt.la
> -rwxr-xr-x  1 root root      825 Oct 10 13:14 libpmt-qa.la
> -rwxr-xr-x  1 root root  1067008 Oct 10 13:14 libpmt-qa.so
> -rwxr-xr-x  1 root root  1016420 Oct 10 13:14 libpmt.so
> -rwxr-xr-x  1 root root      779 Oct 10 13:14 libradar.la
> -rwxr-xr-x  1 root root   123817 Oct 10 13:14 libradar.so
> -rwxr-xr-x  1 root root      802 Oct 10 13:14 libusrp.la
> lrwxrwxrwx  1 root root       16 Oct 10 13:14 libusrp.so ->
libusrp.so.0.0.0
> lrwxrwxrwx  1 root root       16 Oct 10 13:14 libusrp.so.0 ->
> libusrp.so.0.0.0
> -rwxr-xr-x  1 root root   437064 Oct 10 13:14 libusrp.so.0.0.0
> drwxrwxr-x  2 root root     4096 Oct 10 13:14 pkgconfig
> drwxrwxr-x  3 root root     4096 Oct 10 13:13 python2.4
>
> During install, I ran make, make check and make install, and all of
> these seemed to pass just fine. Why would the app compile and then not
> run? Did I install the libraries incorrectly? Is there some weird path
> thing I need to do to make the executable find libusrp? Find
/usr/local/lib?
>
> Thanks for your help,
>
> Dan
>
>
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