iSCSI: open-iscsi patchwork: add -lslp to LDFLAGS, and properly call autoconf

gen_compile.sh

@@ -690,6 +690,9 @@ compile_iscsi() {
 		# Only build userspace
 		print_info 1 'iSCSI: >> Configuring userspace...'
 		cd utils/open-isns || gen_die 'Could not enter open-isns dir'
+		# we currently have a patch that changes configure.ac
+		# once given patch is dropped, drop autoconf too
+		autoconf || gen_die 'Could not tweak open-iscsi configuration'
 		./configure --without-slp >> ${LOGFILE} 2>&1 || gen_die 'Could not configure userspace'
 		cd ../.. || gen_die 'wtf?'
 		MAKE=${UTILS_MAKE} compile_generic "user" ""

patches/iscsi/2.0-872/open-iscsi-2.0.872-slp.patch

@@ -1,11 +1,11 @@
---- open-iscsi-2.0-872.orig/utils/open-isns/configure.ac
+--- a/utils/open-isns/configure.ac
-+++ open-iscsi-2.0-872/utils/open-isns/configure.ac
++++ b/utils/open-isns/configure.ac
-@@ -79,7 +79,7 @@ AC_ARG_WITH(slp,
+@@ -80,7 +80,7 @@ AC_ARG_WITH(slp,
- 			WITH_SLP=$withval
  		else
  			WITH_SLP=yes
--			CPPFLAGS="$CPPFLAGS -I${withval}"
+ 			CPPFLAGS="$CPPFLAGS -I${withval}"
-+			CPPFLAGS="$CPPFLAGS -I${withval} -lslp"
+-			LDFLAGS="$LDFLAGS -L${withval}"
- 			LDFLAGS="$LDFLAGS -L${withval}"
++			LDFLAGS="$LDFLAGS -L${withval} -lslp"
  		fi
  	]
+ )