build: use $(SED) instead of sed when possible

Make use of the sed executable set at configure time.

fish/Makefile.am

@@ -163,7 +163,7 @@ endif
 rc_protocol.c: rc_protocol.x
 	rm -f $@-t $@-t2
 	$(RPCGEN) $(RPCGEN_DEFS) -c -o $@-t $<
-	sed 's,\.\./\(\.\./\)*fish,.,' < $@-t > $@-t2
+	$(SED) 's,\.\./\(\.\./\)*fish,.,' < $@-t > $@-t2
 	rm $@-t
 	mv $@-t2 $@
 

p2v/Makefile.am

@@ -89,7 +89,7 @@ virtp2vdata_DATA = \
 # Deal with stupid autotools libexecdir-not-expandable crap.
 launch-virt-p2v: launch-virt-p2v.in
 	rm -f $@ $@-t
-	sed 's,@''libexecdir@,$(libexecdir),g' < $< > $@-t
+	$(SED) 's,@''libexecdir@,$(libexecdir),g' < $< > $@-t
 	chmod 0555 $@-t
 	mv $@-t $@
 

po-docs/Makefile.am

@@ -57,7 +57,7 @@ libguestfs-docs.pot: po4a.conf
 	  --copyright-holder "Red Hat Inc." \
 	  po4a.conf
 	for f in `cd $(srcdir); find $(linguas) -name '*.pod'`; do \
-	  sed '0,/^=encoding/d' < $$f > $$f.new; \
+	  $(SED) '0,/^=encoding/d' < $$f > $$f.new; \
 	  mv $$f.new $$f; \
 	done
 

run.in

@@ -267,7 +267,7 @@ else
     echo "$b/run: command failed with exit code $fail"
 fi
 if [ -n "$RUN_OUTPUT_FILE" ]; then
-    testname=`echo "$1" | sed -e 's,^./,,g'`
+    testname=`echo "$1" | @SED@ -e 's,^./,,g'`
     echo "<test rescode=\"$fail\" name=\"$testname\" time=\"$(($end_t - $start_t))\">" >> $RUN_OUTPUT_FILE
     echo "<![CDATA[" >> $RUN_OUTPUT_FILE
     # skip the results of test-virt-rescue.pl, as they contain

src/Makefile.am

@@ -211,7 +211,7 @@ endif
 guestfs_protocol.c: guestfs_protocol.x
 	rm -f $@-t $@-t2
 	$(RPCGEN) $(RPCGEN_DEFS) -c -o $@-t $<
-	sed 's,\.\./\(\.\./\)*src,.,' < $@-t > $@-t2
+	$(SED) 's,\.\./\(\.\./\)*src,.,' < $@-t > $@-t2
 	rm $@-t
 	mv $@-t2 $@
 

tests/guests/Makefile.am

@@ -67,7 +67,7 @@ blank-%.img:
 	rm -f $@ $@-t
 	$(top_builddir)/run \
 	  ../../fish/guestfish \
-	    -N $@-t="$$(echo $@ | sed -e 's/blank-//' -e 's/.img//')" exit
+	    -N $@-t="$$(echo $@ | $(SED) -e 's/blank-//' -e 's/.img//')" exit
 	mv $@-t $@
 
 # Make a (dummy) Fedora image.