diffutils: enable ptest support

Install diffutils test suite and run it as ptest.

(From OE-Core rev: 14cc60db64975ad7cb8ae7d50e0233e9d59713df)

Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/diffutils/diffutils-3.3/run-ptest

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+make -C tests check-TESTS

meta/recipes-extended/diffutils/diffutils_3.3.bb

@@ -3,7 +3,9 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504"
 
 require diffutils.inc
 
-SRC_URI = "${GNU_MIRROR}/diffutils/diffutils-${PV}.tar.xz"
+SRC_URI = "${GNU_MIRROR}/diffutils/diffutils-${PV}.tar.xz \
+           file://run-ptest \
+"
 
 do_configure_prepend () {
 	# Need to remove gettext macros with weird mix of versions
@@ -14,3 +16,19 @@ do_configure_prepend () {
 
 SRC_URI[md5sum] = "99180208ec2a82ce71f55b0d7389f1b3"
 SRC_URI[sha256sum] = "a25e89a8ab65fded1731e4186be1bb25cda967834b6df973599cdcd5abdfc19c"
+
+inherit ptest
+
+do_install_ptest() {
+	t=${D}${PTEST_PATH}
+	install -D ${S}/build-aux/test-driver $t/build-aux/test-driver
+	cp -r ${S}/tests $t/
+	install ${B}/tests/Makefile $t/tests/
+	sed -e 's|^Makefile:|_Makefile:|' \
+	    -e 's|bash|sh|' \
+	    -e 's|^top_srcdir = \(.*\)|top_srcdir = ..\/|' \
+	    -e 's|^srcdir = \(.*\)|srcdir = .|' \
+	    -e 's|"`$(built_programs)`"|diff|' \
+	    -e 's|gawk|awk|g' \
+	    -i $t/tests/Makefile
+}