gcc -Wall -g -O2 -I. -I../../Programs -I./../Programs -I../../Programs -I./.. -I../.. -D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -DHAVE_CONFIG_H -c 
../../Programs/auth.c
../../Programs/auth.c: In function 'retrievePeerCredentials':
../../Programs/auth.c:178: error: dereferencing pointer to incomplete type
../../Programs/auth.c: In function 'checkPeerUser':
../../Programs/auth.c:190: error: dereferencing pointer to incomplete type
../../Programs/auth.c: In function 'checkPeerGroup':
../../Programs/auth.c:195: error: dereferencing pointer to incomplete type
../../Programs/auth.c: At top level:
../../Programs/auth.c:266: error: field 'peerCredentials' has incomplete type
make[2]: *** [auth.o] Error 1
make[2]: Leaving directory `/home/luke/Projects/Ubuntu_Development/intrepid/sources/brltty/brltty-3.10~r3724-1ubuntu1/build-brltty/Programs'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/luke/Projects/Ubuntu_Development/intrepid/sources/brltty/brltty-3.10~r3724-1ubuntu1/build-brltty'
make: *** [build-stamp] Error 2