[sane-devel] Compiling test program against libsane

[Jeffrey Ratcliffe]

I'm trying to track down a bug, which I think is in HPLIP, and I have
this test program, which compiles and runs fine on my gentoo box:

#include <stdio.h>
#include <sane/sane.h>

int
main (int argc, char **argv) {
 SANE_Status		status;
 SANE_Int		version_code;
 SANE_Auth_Callback	authorize;
 SANE_Handle 		h;
 const SANE_Device	**device_list;

 int i = atoi(argv[2]);

 printf("initialising sane... ");
 status = sane_init(&version_code, authorize);
 printf("%s\n", sane_strstatus (status));

 printf("opening %s, %d times\n", argv[1], i);

 while (i-- > 0) {
   printf("opening %s... ", argv[1]);
   status = sane_open(argv[1], &h);
   printf("%s\n", sane_strstatus (status));

   sane_close(h);
 }
 sane_exit;
}

However, on my Ubuntu Precise box, I'm getting:

$ gcc -lsane -L/usr/lib/i386-linux-gnu/ -I/usr/include/
hplip_segfault.c -o hplip_segfault
/tmp/cciw9jNN.o: In function `main':
hplip_segfault.c:(.text+0x3a): undefined reference to `sane_init'
hplip_segfault.c:(.text+0x4a): undefined reference to `sane_strstatus'
hplip_segfault.c:(.text+0xa6): undefined reference to `sane_open'
hplip_segfault.c:(.text+0xb6): undefined reference to `sane_strstatus'
hplip_segfault.c:(.text+0xca): undefined reference to `sane_close'
collect2: ld returned 1 exit status

where the contents of /usr/lib/i386-linux-gnu/pkgconfig/sane-backends.pc is

prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/i386-linux-gnu
includedir=${prefix}/include
ldflags=-Wl,-Bsymbolic-functions
libs=

Name: SANE Backends
Description: Backends for SANE, the universal scanner interface
Version: 1.0.22
Requires:
Libs: -L${libdir} -lsane
Libs.private: ${ldflags} ${libs}
Cflags: -I${includedir}

Has anyone any insight on how to get this linking properly?

Regards

Jeff