Move OpenSolaris special config to the configure script

Makefile

@@ -49,8 +49,6 @@ ifeq ($(shell uname -o),Msys)
 CONFIG_TARGET=mingw
 else ifeq ($(shell uname -s),Darwin)
 CONFIG_TARGET=darwin
-else ifeq ($(shell uname), SunOS)
-CONFIG_TARGET=sunos
 else
 CONFIG_TARGET=generic
 endif
@@ -162,11 +160,6 @@ LINT_CCODE=\
 LDLIBS+=-ln2n
 LDLIBS+=$(LDLIBS_EXTRA)
 
-#For OpenSolaris (Solaris too?)
-ifeq ($(CONFIG_TARGET), sunos)
-LDLIBS+=-lsocket -lnsl
-endif
-
 ifeq ($(CONFIG_TARGET),mingw)
 CFLAGS+=-I. -I./win32
 LDLIBS+=$(abspath win32/n2n_win32.a)

configure.ac

@@ -12,6 +12,14 @@ AC_PROG_CC
 AC_CHECK_TOOL([AR], [ar], [false])
 AC_CHECK_TOOL([WINDRES], [windres], [windres])
 
+case "$host_os" in
+    *-solaris*)
+        # Was in Makefile with the test `uname` -eq "SunOS"
+        # and comment "For OpenSolaris (Solaris too?)"
+        LIBS="-lsocket -lnsl $LIBS"
+        ;;
+esac
+
 # TODO: ideally, should use AC_ARG_ENABLE
 AC_ARG_WITH([edgex],
     AS_HELP_STRING([--with-edgex], [Build for Ubiquity-X]),