groff: not search fonts on build host

groff searches fonts on build host which are provided by ghostscript.
The number of font files installed by groff are different according to
whether ghostscript fonts are installed on build host. Fix it by not
search font dirs on the host.

(From OE-Core rev: 01bce5fada48ecc7bd76c3d7fbade3c034518573)

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/groff/groff-1.22.3/groff-not-search-fonts-on-build-host.patch

@@ -0,0 +1,20 @@
+groff searchs fonts which are provided by ghostscript on build host.
+It causes non-determinism issue. So not search font dirs on host.
+
+Upstream-Status: Inappropriate [cross build specific]
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+
+diff --git a/font/devpdf/Foundry.in b/font/devpdf/Foundry.in
+index a6e968f..8094642 100644
+--- a/font/devpdf/Foundry.in
++++ b/font/devpdf/Foundry.in
+@@ -65,7 +65,7 @@ ZD|Y||||Dingbats!d050000l.pfb
+ #======================================================================
+ 
+ #Foundry|Name|Searchpath
+-foundry|U|(gs):/usr/share/fonts/type1/gsfonts :/opt/local/share/fonts/urw-fonts # the URW fonts delivered with ghostscript (may be different)
++foundry|U|(gs) # the URW fonts delivered with ghostscript (may be different)
+ #Define Flags for afmtodit
+ 
+ r=-i 0 -m

meta/recipes-extended/groff/groff_1.22.3.bb

@@ -11,6 +11,7 @@ SRC_URI = "${GNU_MIRROR}/groff/groff-${PV}.tar.gz \
 	file://groff-1.22.2-correct-man.local-install-path.patch \
 	file://0001-Unset-need_charset_alias-when-building-for-musl.patch \
 	file://0001-replace-perl-w-with-use-warnings.patch \
+	file://groff-not-search-fonts-on-build-host.patch \
 "
 
 SRC_URI[md5sum] = "cc825fa64bc7306a885f2fb2268d3ec5"