innfeed-0.10.1をコンパイルしてみました。
コンパイルは以下の環境で行いました。

NWS-5000X
NEWS-OS Release 6.1.2
NEWS-C Release 1.010
GNU make 3.75

% make

でOKです。

hiraga@meis.sony.co.jp

diff -ur innfeed-0.10.1/Makefile innfeed-0.10.1-newsos6/Makefile
--- innfeed-0.10.1/Makefile	Mon Mar  3 23:07:55 1997
+++ innfeed-0.10.1-newsos6/Makefile	Fri Nov 21 16:08:26 1997
@@ -12,21 +12,21 @@
 BINDIR		= /usr/news/local
 
 # Where your man pages live.
-MANDIR		= /usr/local/man
+MANDIR		= /usr/local/man/C
 
 # The compiler you want. NOTE... AIX 3.2.5 users do NOT use CC. See the 
 # comment in sysconfig.h
-CC		= gcc
+CC		= cc
 
 # How to run lex and yacc. Innfeed requires Flex (but you shouldn't need it).
 LEX		= lex -d
 YACC		= yacc -t -d
 
 # Debug option for compiler -g or -O (or both if using gcc).
-DBFLAGS		= -g
+DBFLAGS		= -std -O
 
 # Add any architecture specific defines, flags etc. you need
-OSFLAGS		=
+OSFLAGS		= 
 # OSFLAGS	= -DSOLARIS			# uncomment for Solaris
 
 # Any extra non-architecture specific defines you may need.
@@ -37,7 +37,7 @@
 
 # Any system specific libraries. If you get undefines at link time for names
 # matching yy*, then you may need ``-ly -ll''.
-LIBRARIES	=
+LIBRARIES	= -lsocket -lnsl
 # uncomment for SOLARIS but you may have to leave out the -lresolv
 # LIBRARIES	= -lnsl -lsocket -lresolv	
 
@@ -159,7 +159,7 @@
 MV		= mv
 TAG		= etags
 CHMOD		= chmod
-INSTALL		= install -c 
+INSTALL		= /usr/ucb/install -c 
 
 MAKEDEPEND	= ./makedepend
 DEPENDFLAGS	= -s -c '$(CC) -E'
diff -ur innfeed-0.10.1/config.h innfeed-0.10.1-newsos6/config.h
--- innfeed-0.10.1/config.h	Mon Mar  3 23:14:32 1997
+++ innfeed-0.10.1-newsos6/config.h	Fri Nov 21 15:52:22 1997
@@ -63,7 +63,7 @@
 /* in main.c */
 #define NEWSSPOOL 		"/var/news/spool/articles" /* news-spool */
 #define PID_FILE 		"innfeed.pid" 	/* pid-file */
-#define LOG_FILE 		"/var/log/news/innfeed.log" /* log-file */
+#define LOG_FILE 		"/var/adm/news/innfeed.log" /* log-file */
 
 /* in host.c */
 #define DNS_RETRY_PERIOD 	900 		/* dns-retry */
@@ -106,7 +106,7 @@
 /* If this file exists at startup then it's the same as having done
    '-d 1' on the command line. This is a cheap way of avoiding continual
    reloading of the newsfeeds file when debugging. */
-#define DEBUG_FILE "/var/log/news/innfeed.debug"
+#define DEBUG_FILE "/var/adm/news/innfeed.debug"
 
 /* if defined to a non-zero number, then a snapshot will be printed
    whenever die() is called (e.g. on assert failure). This can use up a
diff -ur innfeed-0.10.1/sysconfig.h innfeed-0.10.1-newsos6/sysconfig.h
--- innfeed-0.10.1/sysconfig.h	Mon Mar  3 23:14:33 1997
+++ innfeed-0.10.1-newsos6/sysconfig.h	Fri Nov 21 15:56:11 1997
@@ -99,6 +99,18 @@
 
 
 /*
+** Sony NEWS-OS 6.x
+**
+*/
+
+#if defined (__sony_news)
+#define GETSOCKOPT_ARG  char *
+#define MAX_WRITEV_VEC  16
+#define HAVE_MMAP
+#endif
+
+
+/*
 ** SOLARIS
 **
 */
@@ -285,6 +297,11 @@
 #elif defined (__osf__)         /* DEC Unix */
 
 #define DONT_USE_UNION_WAIT 1
+
+#elif defined (__sony_news)       /* NEWS-OS 6.x */
+
+#define DO_HAVE_WAITPID 1
+#define LOG_PERROR 0
 
 #elif defined (SOLARIS)         /* SunOS 5.x */