buildfix: check for old pod2man versions

Older pod2man don't have a --utf8 switch, check for this in conffigure
and use it only when present.  Fixes build on RHEL-5.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Makefile

@@ -348,7 +348,6 @@ QMP/qmp-commands.txt: $(SRC_PATH)/qmp-commands.hx
 qemu-img-cmds.texi: $(SRC_PATH)/qemu-img-cmds.hx
 	$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -t < $< > $@,"  GEN   $@")
 
-POD2MAN = pod2man --utf8
 qemu.1: qemu-doc.texi qemu-options.texi qemu-monitor.texi
 	$(call quiet-command, \
 	  perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< qemu.pod && \

configure

@@ -2821,6 +2821,13 @@ if test "$solaris" = "no" ; then
     fi
 fi
 
+# test if pod2man has --utf8 option
+if pod2man --help | grep -q utf8; then
+    POD2MAN="pod2man --utf8"
+else
+    POD2MAN="pod2man"
+fi
+
 # Use ASLR, no-SEH and DEP if available
 if test "$mingw32" = "yes" ; then
     for flag in --dynamicbase --no-seh --nxcompat; do
@@ -3358,6 +3365,7 @@ echo "LIBS+=$LIBS" >> $config_host_mak
 echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak
 echo "EXESUF=$EXESUF" >> $config_host_mak
 echo "LIBS_QGA+=$libs_qga" >> $config_host_mak
+echo "POD2MAN=$POD2MAN" >> $config_host_mak
 
 # generate list of library paths for linker script