cpan.bbclass: make RPATH fix more general

Extract a general version of RPATH fix for libxml-parser-perl_2.44.bb
from
  292471701 libxml-parser-perl: fix "...contains bad RPATH"
into cpan.bbclass to catch most errors reported by Khem Raj via
  http://errors.yoctoproject.org/Errors/Build/66538/

Genrally, Perl 5 toolchain deals with cross-compile sysroots
as if a dependency is installed at an exostic place on a server.
This issue needs to be addressed wider into the community.

(From OE-Core rev: a5439ff9627d309f6980947f5ee573d85e672228)

Signed-off-by: Jens Rehsack <sno@netbsd.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/cpan.bbclass

@@ -40,6 +40,16 @@ cpan_do_configure () {
 	fi
 }
 
+do_configure_append_class-target() {
+       find . -name Makefile | xargs sed -E -i \
+           -e 's:LD_RUN_PATH ?= ?"?[^"]*"?::g'
+}
+
+do_configure_append_class-nativesdk() {
+       find . -name Makefile | xargs sed -E -i \
+           -e 's:LD_RUN_PATH ?= ?"?[^"]*"?::g'
+}
+
 cpan_do_compile () {
 	oe_runmake PASTHRU_INC="${CFLAGS}" LD="${CCLD}"
 }

meta/recipes-devtools/perl/libxml-parser-perl_2.44.bb

@@ -21,13 +21,6 @@ inherit cpan ptest-perl
 do_configure_append_class-target() {
 	sed -E \
 	    -e 's:-L${STAGING_LIBDIR}::g' -e 's:-I${STAGING_INCDIR}::g' \
-	    -e 's:LD_RUN_PATH ?= ?"?[^"]*"?::g' \
-	    -i Makefile Expat/Makefile
-}
-
-do_configure_append_class-nativesdk() {
-	sed -E \
-	    -e 's:LD_RUN_PATH ?= ?"?[^"]*"?::g' \
 	    -i Makefile Expat/Makefile
 }