Merge branch '634-llvm-15-on-freebsd-support-for-sane-backends-1-1-1' into 'master'

Resolve "LLVM 15 on FreeBSD support for sane-backends 1.1.1"

Closes #634

See merge request sane-project/backends!777

frontend/jpegtopdf.c

@@ -201,7 +201,11 @@ static SANE_Int _get_current_time( struct tm *pt, SANE_Byte *sign_c, int *ptz_h,
 		goto EXIT;
 	}
 	/* get time difference ( OHH'mm' ) */
+#ifdef __FreeBSD__
+       tz = -pt->tm_gmtoff;
+#else
 	tz = timezone;
+#endif
 	if ( tz > 0 ) {
 		*sign_c = '-';
 	}

frontend/scanimage.c

@@ -40,6 +40,10 @@
 #include <unistd.h>
 #include <stdarg.h>
 
+#ifdef __FreeBSD__
+#include <libgen.h>
+#endif
+
 #if defined (__APPLE__) && defined (__MACH__)
 #include <libgen.h>     // for basename()
 #endif