dosbox-x: Hack configure to detect armv7 build

This is a lazy hack tested on armv7 only. To make it work we have to disable
elder arm arches. That should not be a prblem because it does not make much
sense to run dosbox-x on them.

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

recipes-emulators/dosbox/dosbox-x.bb

@@ -23,6 +23,7 @@ SRC_URI = " \
     file://0001-use-pkgconfig-to-find-sdl2.patch \
     file://0002-Enable-unaligned-memory-based-on-recipe-s-suggestion.patch \
     file://0003-menu-Fix-segfaults-during-menu-creation-in-some-envi.patch \
+    file://0004-Treat-all-arm-hosts-as-armv7.patch \
     file://dosbox-x.desktop \
 "
 SRCREV = "0f1435e18d06ac955f26211541a9556bac759ae2"
@@ -37,10 +38,10 @@ EXTRA_OECONF = " \
     --disable-alsatest \
 "
 
-# configure's cpu detection does not match here so set what was intended
-EXTRA_OECONF_append_armv4 = " --disable-unaligned-memory"
-EXTRA_OECONF_append_armv5 = " --disable-unaligned-memory"
-EXTRA_OECONF_append_armv6 = " --disable-unaligned-memory"
+# sorry - but it does not make sense
+COMPATIBLE_HOST_armv4 = 'null'
+COMPATIBLE_HOST_armv5 = 'null'
+COMPATIBLE_HOST_armv6 = 'null'
 
 do_install_append() {
 	install -d ${D}/${datadir}/applications

recipes-emulators/dosbox/dosbox-x/0004-Treat-all-arm-hosts-as-armv7.patch

@@ -0,0 +1,31 @@
+From 60cc0473ef7f17a5f3f43be238f37a7db786a7c3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
+Date: Sat, 24 Oct 2020 00:34:59 +0200
+Subject: [PATCH] Treat all arm hosts as armv7 le
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Upstream-Status: Inappropriate [dirty hack]
+
+Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index 8841e6c4d..6277f96c2 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -489,7 +489,7 @@ case "$host_cpu" in
+     c_targetcpu="m68k"
+     c_unalignedmemory=yes
+     ;;
+-   armv7l)
++   arm)
+     AC_DEFINE(C_TARGETCPU,ARMV7LE)
+     AC_MSG_RESULT(ARMv7 Little Endian)
+     c_targetcpu="arm"
+-- 
+2.26.2
+