I am having trouble calling make all. I get the following error message: gcc -Wl,-rpath,/usr/local/lib -o lib/test/test-scanner lib/test/test-scanner.ro lib/conf-lex.ao lib/error.ao lib/general.ao -Llib lib/test/test-scanner.ro: In function `main': test-scanner.c:(.text+0x1c): undefined reference to `sensors_scanner_init' test-scanner.c:(.text+0x51): undefined reference to `sensors_yylex' test-scanner.c:(.text+0x58): undefined reference to `sensors_yylineno' test-scanner.c:(.text+0x9f): undefined reference to `sensors_scanner_exit' collect2: ld returned 1 exit status make: *** [lib/test/test-scanner] Error 1 Can anyone help please?