[PATCH 1/3] sdkchroot: Handle host-target permutation corner cases

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

This fixes the case host==target and also reports unsupported host
architectures.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 meta/recipes-devtools/sdkchroot/sdkchroot.bb | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/meta/recipes-devtools/sdkchroot/sdkchroot.bb b/meta/recipes-devtools/sdkchroot/sdkchroot.bb
index cfec95c..705a56a 100644
--- a/meta/recipes-devtools/sdkchroot/sdkchroot.bb
+++ b/meta/recipes-devtools/sdkchroot/sdkchroot.bb
@@ -13,8 +13,7 @@ PV = "0.1"
 
 inherit isar-bootstrap-helper
 
-SDKCHROOT_PREINSTALL := "crossbuild-essential-${DISTRO_ARCH} \
-                           debhelper \
+SDKCHROOT_PREINSTALL := "debhelper \
                            autotools-dev \
                            dpkg \
                            locales \
@@ -36,10 +35,19 @@ do_build[depends] = "isar-apt-host:do_cache_config isar-bootstrap-host:do_bootst
 do_build() {
 
     if [ ${HOST_DISTRO} != "debian-stretch" ]; then
-         bbfatal "SDK doesn't support ${HOST_DISTRO}"
+        bbfatal "SDK doesn't support ${HOST_DISTRO}"
+    fi
+    if [ ${HOST_ARCH} != "i386" -a ${HOST_ARCH} != "amd64" ]; then
+        bbfatal "SDK doesn't support ${HOST_ARCH} as host"
+    fi
+
+    if [ ${HOST_ARCH} = ${DISTRO_ARCH} -o ${DISTRO_ARCH} = "i386" ]; then
+        packages="${SDKCHROOT_PREINSTALL} build-essential"
+    else
+        packages="${SDKCHROOT_PREINSTALL} crossbuild-essential-${DISTRO_ARCH}"
     fi
 
-    setup_root_file_system --copyisarapt --host-arch --host-distro "${S}" ${SDKCHROOT_PREINSTALL}
+    setup_root_file_system --copyisarapt --host-arch --host-distro "${S}" $packages
 
     # Configure root filesystem
     sudo install -m 755 ${WORKDIR}/configscript.sh ${S}
-- 
2.16.4