file not found while using make: symbolic link errors

[Fahim]

Running Fedora 15-64 bit on HP Elitebook 8530p.

When executing make, I get the following message:

/usr/bin/ld: cannot find -l/lib64/libusb-1.0.so.0
/usr/bin/ld: cannot find -l/usr/lib64/libbluetooth.so.3
collect2: ld returned 1 exit status

However it seems, files do exist in the folder:

[root@localhost lib64]# ls -l  /usr/lib64/libbluetooth*
lrwxrwxrwx 1 root root     22 Oct  7 12:31 /usr/lib64/libbluetooth.so -> libbluetooth.so.3.10.3
lrwxrwxrwx 1 root root     22 Sep  7 12:04 /usr/lib64/libbluetooth.so.3 -> libbluetooth.so.3.10.3
-rwxr-xr-x 1 root root 111520 Jun 28 10:20 /usr/lib64/libbluetooth.so.3.10.3

[root@localhost lib64]# ls -l  /lib64/libusb*
lrwxrwxrwx  1 root root    19 Sep  7 12:04 /lib64/libusb-0.1.so.4 -> libusb-0.1.so.4.4.4
-rwxr-xr-x  1 root root 20376 Jun 22 03:09 /lib64/libusb-0.1.so.4.4.4
-rw-r--r--  1 root root 85498 Feb  8  2011 /lib64/libusb-1.0.a
lrwxrwxrwx  1 root root    19 Oct  7 11:21 /lib64/libusb-1.0.so -> libusb-1.0.so.0.0.0
lrwxrwxrwx. 1 root root    19 May 13 14:42 /lib64/libusb-1.0.so.0 -> libusb-1.0.so.0.0.0
-rwxr-xr-x  1 root root 56280 Feb  8  2011 /lib64/libusb-1.0.so.0.0.0
-rw-r--r--  1 root root 19362 Jun 22 03:09 /lib64/libusb.a
lrwxrwxrwx  1 root root    19 Oct  7 11:21 /lib64/libusb.so -> libusb-0.1.so.4.4.4

Comparing ldd results for two different packages. First one fails, latter succeeds:

[root@localhost Linux]# ldd testBluetooth
	linux-gate.so.1 =>  (0x00a8f000)
	libusb-1.0.so.0 => not found
	libbluetooth.so.3 => not found
	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x001eb000)
	libm.so.6 => /lib/libm.so.6 (0x4d635000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x4bda2000)
	libc.so.6 => /lib/libc.so.6 (0x4d301000)
	libpthread.so.0 => /lib/libpthread.so.0 (0x4d5bc000)
	/lib/ld-linux.so.2 (0x4d2e0000)

[root@localhost Linux]# ldd /usr/bin/nxtrc 
	linux-vdso.so.1 =>  (0x00007fff20be5000)
	libbluetooth.so.3 => /usr/lib64/libbluetooth.so.3 (0x0000003aa9000000)
	libc.so.6 => /lib64/libc.so.6 (0x0000003aa7800000)
	/lib64/ld-linux-x86-64.so.2 (0x0000003aa7400000)

Here are the relevant parts of the make file:

CC = g++
CFLAGS = -c -Wall -m64  #-g
BLIB = -l/usr/lib64/llibbluetooth.so.3
ULIB = -l/lib64/libusb-1.0.so.0

INCBLUE = -I/usr/include/bluetooth/
INCUSB = -I-l/usr/include/libusb-1.0/

testUsb: testUsb.cpp f1.o f2.o f3.o f4.o f5.o f6.o f7.o f8.o f9.o 
	$(CC) $(ULIB) $(BLIB) $(INCBLUE) $(INCUSB)  testUsb.cpp f1.o f2.o f3.of4.o f5.o f6.o f7.o f8.o f9.o -o testUsb  -Wall

testBluetooth: testBluetooth.cpp f1.o f2.o f3.o f4.o f5.o f6.o f7.o f8.o f9.o
	$(CC) $(ULIB) $(BLIB) $(INCBLUE) $(INCUSB) testBluetooth.cpp f1.o f2.o f3.o f4.o f5.o f6.o f7.o f8.o f9.o -o testBluetooth -Wall

Reference for CFLAGS
Thanks.

[PabloTwo]

I don't know what it fails with /lib64/libusb-1.0.so.0, but in the make file there seems to be one too many l's in /usr/lib64/llibbluetooth.so.3

Did you install some shared object files and not do, as root, the ldconfig command afterwards?

[Fahim]

Thanks for catching the typo; I did fix it, but to no avail. And, I did install those libusb and bluez packages, and did run ldconfig, as root, afterwards.

[PabloTwo]

Well, I'm not a programmer, and I really don't know much about constructing make files (I am now guessing the make file is one you created yourself), but if your compiling code, it seems logical that you need to be compiling with the header files and not the compiled binaries of libblutoodh.so.xxxxx and libusb.so.xxxx. The bluez-libs-devel and libusb-devel packages provide those.

When you install a Fedora rpm package that contains shared object files, the ldconfig command is run in a post-install script. I made my comment about using ldconfig thinking you might have possibly installed those libraries in some other manner.

BASH:~/-> rpm -q --scripts libusb
postinstall program: /sbin/ldconfig
postuninstall program: /sbin/ldconfig

[markkuk]

You are using wrong syntax for the -l options. You must omit the path, the "lib" prefix and the ".so" suffix from the library name. The makefile should have:

BLIB=-lbluetooth
ULIB=-lusb-1.0

[Fahim]

Made the changes as you suggested, the error is gone but, the output for ldconfig remains the same. it isn't finding libusb-1.0.so.0

[giulix]

You can get around that problem by defining a symbolic link and linking against it. For example, to link against /usr/lib/libusb-1.0.so.0, you can create a symbolic link named libusb.so in the current directory and link against it with

ln -s /usr/lib/libusb-1.0.so.0 libusb.so
gcc -g -o program program.c -L. -lusb