Compilation errors

[Isaiah Chua]

hi folks,   I'm not sure if this has been asked before, but searching the FAQs didn't produce anything, so I assume it could be new.   I'm trying to compile qMail on our RedHat 6.2 server and have downloaded all the necessary files for qMail to be compiled and take over sendmail.   However, whenever I try to compile either of the modules and qMail itself, I get a rather similar message for all... after typing 'make setup check':   bash# cd qmail* bash# make setup check ( ( ./compile tryvfork.c && ./load tryvfork ) >/dev/null \ 2>&1 \ && cat fork.h2 || cat fork.h1 ) > fork.h rm -f tryvfork.o tryvfork ./compile qmail-local.c qmail-local.c: In function `main': qmail-local.c:448: warning: return type of `main' is not `int' ./compile qmail.c ./compile quote.c ./compile now.c ./compile gfrom.c ./compile myctime.c ./compile slurpclose.c ./compile case_diffb.c ./compile case_diffs.c ./compile case_lowerb.c ./compile case_lowers.c ./compile case_starts.c ./makelib case.a case_diffb.o case_diffs.o case_lowerb.o \ case_lowers.o case_starts.o ./compile getln.c ./compile getln2.c ./makelib getln.a getln.o getln2.o ./compile subgetopt.c ./compile sgetopt.c ./makelib getopt.a subgetopt.o sgetopt.o ./compile sig_alarm.c In file included from /usr/include/signal.h:300,                  from sig_alarm.c:1: /usr/include/bits/sigcontext.h:28: asm/sigcontext.h: No such file or directory make: *** [sig_alarm.o] Error 1 I already have all the GNU C compilers installed on the server.   Anyone has any ideas why?