commit 84f5839c174e25af57f8d082cbbe8a603501dcaa
from: Alexander Barton <alex@barton.de>
date: Wed Feb 13 21:11:39 2013 UTC

configure: "netinet/in_systm.h" is optional

The header file "netinet/in_systm.h" already is optional in ngIRCd, so
don't require it in the configure script. Now ngIRCd can be built on
Minix 3 again :-)
(cherry picked from commit fd260404caa7ce174ada663024d19cd789c152b5)

commit - cb3b411166384da9460da69d242d350249e15f3a
commit + 84f5839c174e25af57f8d082cbbe8a603501dcaa
blob - 01da7f6cf8d853056c13ac43a445c093a48bfcbc
blob + 5ae1c0e5c3bd1438d5008628e6b9cbf4371d544d
--- configure.ng
+++ configure.ng
@@ -120,14 +120,14 @@ AC_HEADER_TIME
 
 # Required header files
 AC_CHECK_HEADERS([ \
-	fcntl.h netdb.h netinet/in.h netinet/in_systm.h stdlib.h string.h \
+	fcntl.h netdb.h netinet/in.h stdlib.h string.h \
 	strings.h sys/socket.h sys/time.h unistd.h \
 	],,AC_MSG_ERROR([required C header missing!]))
 
 # Optional header files
 AC_CHECK_HEADERS_ONCE([ \
-	arpa/inet.h inttypes.h malloc.h netinet/ip.h stdbool.h stddef.h \
-	stdint.h varargs.h \
+	arpa/inet.h inttypes.h malloc.h netinet/in_systm.h netinet/ip.h \
+	stdbool.h stddef.h stdint.h varargs.h \
 	])
 
 # -- Datatypes --