Making all in src...
cp -f exec/GNUfind.sh ../run/exec/find
chmod 755 ../run/exec/find
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o fd.o fd.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o version.o version.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o xmalloc.o xmalloc.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o decode.o decode.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o snprintf.o snprintf.c
/usr/include/varargs.h:97: syntax error, found `)'
/usr/include/varargs.h:97: bad attribute specification, expecting constant, found `;'
snprintf.c:86: bad attribute specification, expecting constant, found `unsigned'
snprintf.c:87: syntax error, found `;'
snprintf.c:128: undefined type, found `va_list'
snprintf.c:692: undefined type, found `va_list'
snprintf.c:718: undefined type, found `va_list'
cpp-precomp: warning: errors during smart preprocessing, retrying in basic mode
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o localtime_r.o localtime_r.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o inet_ntoa_r.o inet_ntoa_r.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o accounts.o accounts.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o chat.o chat.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o commands.o commands.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o files.o files.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o hlserver.o hlserver.c
cc -w -g -O2 -I. -I./include -I../include -DHAVE_CONFIG_H -c -o htxf.o htxf.c
htxf.c:4: warning: could not use precompiled header '/usr/include/unistd.p', because:
htxf.c:4: warning: macro 'u_int8_t' defined by ../include/config.h conflicts with precomp
htxf.c:8: header file 'sys/poll.h' not found
cpp-precomp: warning: errors during smart preprocessing, retrying in basic mode
make[1]: *** [htxf.o] Error 1
make: *** [all] Error 1

It is missing a lot of things when doing a basic ./configure and I can't understand why. This has been valid for all machines I've tried it on. Also this is valid if I have symlinked to gcc or not...