runx: robustness changes

Adding one build and one runtime robustness change:

  - build: specify the syroot native as a library path to qemu user.
           This allows us to run dynamic executables

  - runtime: add a patch to increase the serial fd timeout. We'll
             drop this once it is merged upstream.

Signed-off-by: Bruce Ashfield <bruce.ashfield@xilinx.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

recipes-core/runx/runx/0001-runX-add-bounded-looping-timeout.patch

@@ -0,0 +1,35 @@
+From 1cf4ff2137252c63687f54e09626850cfab6e9f9 Mon Sep 17 00:00:00 2001
+From: Rob Woolley <Rob.Woolley@windriver.com>
+Date: Thu, 17 Sep 2020 19:41:06 -0700
+Subject: [PATCH] runX: add bounded / looping timeout
+
+On slower machines, we may need a longer timeout before giving
+up.
+
+Signed-off-by: Rob Woolley <Rob.Woolley@windriver.com>
+---
+ git/runX | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/runX b/runX
+index 492cb4c..70c95e1 100755
+--- a/runX
++++ b/runX
+@@ -119,7 +119,13 @@ then
+         daemonize $workpath/serial_start \
+           "$containerid" \
+           "$crundir"/console_pty
+-        sleep .1
++        for n in 5 4 3 2 1; do
++            if [ ! -l "$crundir"/console_pty ]; then
++              break;
++            else
++              sleep .1;
++            fi;
++        done
+         daemonize $workpath/serial_fd_handler \
+           "$guestconsole" \
+           "$crundir"/console_pty
+-- 
+2.17.1
+

recipes-core/runx/runx_git.bb

@@ -12,6 +12,7 @@ SRC_URI = "\
           https://www.kernel.org/pub/linux/kernel/${KERNEL_URL_VER}/${KERNEL_SRC_VER}.tar.xz;destsuffix=git/kernel/build \
           file://0001-make-kernel-cross-compilation-tweaks.patch \
           file://0001-make-initrd-cross-install-tweaks.patch \
+          file://0001-runX-add-bounded-looping-timeout.patch \
 	  "
 SRC_URI[md5sum] = "ce9b2d974d27408a61c53a30d3f98fb9"
 SRC_URI[sha256sum] = "bf338980b1670bca287f9994b7441c2361907635879169c64ae78364efc5f491"
@@ -31,7 +32,7 @@ inherit kernel-arch
 
 # we have a busybox bbappend that makes /bin available to the
 # sysroot, and hence gets us the target binary that we need
-DEPENDS = "busybox go-build"
+DEPENDS = "busybox-initrd go-build"
 
 # for the kernel build phase
 DEPENDS += "openssl-native coreutils-native util-linux-native xz-native bc-native"
@@ -77,9 +78,8 @@ do_compile() {
 
     # construct the initrd
     echo "[INFO]: runx: constructing the initrd"
-
     cp ${STAGING_DIR_HOST}/bin/busybox.nosuid ${WORKDIR}/busybox
-    export QEMU_USER=`which qemu-${HOST_ARCH}`
+    export QEMU_USER="`which qemu-${HOST_ARCH}` -L ${STAGING_BASELIBDIR}/.."
     export BUSYBOX="${WORKDIR}/busybox"
     export CROSS_COMPILE="t"
     ${S}/initrd/make-initrd