Check for <netinet/in.h>, required by DG/ux

src/configure

@@ -2735,7 +2735,7 @@ else
 fi
 done
 
-for ac_hdr in sys/resource.h netdb.h arpa/inet.h
+for ac_hdr in sys/resource.h netdb.h arpa/inet.h getopt.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
@@ -2815,7 +2815,7 @@ else
 fi
 done
 
-for ac_hdr in readline/history.h ieeefp.h fp_class.h
+for ac_hdr in readline/history.h ieeefp.h fp_class.h netinet/in.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
@@ -3224,7 +3224,7 @@ else
 fi
 rm -f conftest*
 
-if test x$ac_cv_prog_gcc = xyes; then
+if test $ac_cv_prog_gcc = yes; then
     echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
 echo "configure:3230: checking whether ${CC-cc} needs -traditional" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then

src/configure.in

@@ -421,7 +421,7 @@ AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(limits.h unistd.h termios.h values.h sys/select.h)
 AC_CHECK_HEADERS(sys/resource.h netdb.h arpa/inet.h getopt.h)
 AC_CHECK_HEADERS(readline.h history.h dld.h crypt.h endian.h float.h)
-AC_CHECK_HEADERS(readline/history.h ieeefp.h fp_class.h)
+AC_CHECK_HEADERS(readline/history.h ieeefp.h fp_class.h netinet/in.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST