wpa_supplicant_V2.6 版本编译问题

/usr/bin/ld: cannot find -lnl
collect2: error: ld returned 1 exit status
Makefile:1693: recipe for target 'wpa_supplicant' failed
make: *** [wpa_supplicant] Error 1

# driver_nl80211.c requires libnl. If you are compiling it yourself
# you may need to point hostapd to your version of libnl.
#
#CFLAGS += -I$<path to libnl include files>
#LIBS += -L$<path to libnl library files>
CFLAGS += -I/usr/local/include/libnl3/
LIBS += -L/usr/local/lib/

# Use libnl 3.2 libraries (if this is selected, CONFIG_LIBNL20 is ignored)
# CONFIG_LIBNL32=y

fatal: No names found, cannot describe anything.
  CC  config.c
  CC  notify.c
  CC  bss.c
  CC  eap_register.c
  CC  ../src/utils/common.c
  CC  ../src/utils/wpa_debug.c
  CC  ../src/utils/wpabuf.c
  CC  wmm_ac.c
../src/utils/os_unix.c: In function ‘os_rel2abs_path’:
../src/utils/os_unix.c:293:17: error: ‘errno’ undeclared (first use in this function)
    last_errno = errno;
                 ^
../src/utils/os_unix.c:293:17: note: each undeclared identifier is reported only once for each function it appears in
../src/utils/os_unix.c:295:22: error: ‘ERANGE’ undeclared (first use in this function)
    if (last_errno != ERANGE)
                      ^
Makefile:1780: recipe for target '../src/utils/os_unix.o' failed
make: *** [../src/utils/os_unix.o] Error 1