make arm64 conditional

Should now build for both, amd64 and arm64.

Signed-off-by: Gerwin Klein <gerwin.klein@proofcraft.systems>

Makefile

@@ -53,7 +53,7 @@ ifeq ($(HOST_ARCH),x86_64)
     DOCKER_PLATFORM := "linux/amd64"
 else ifeq ($(HOST_ARCH),arm64)
 	# We assume ARMv8 as the platform
-    DOCKER_PLATFORM := "linux/arm64/v8"
+    DOCKER_PLATFORM := "linux/arm64"
 else
     @echo "Unsupported host architecture: $HOST_ARCH"
     @exit 1

build.sh

@@ -232,7 +232,7 @@ if [[ $HOST_ARCH == "x86_64" ]]; then
 elif [[ $HOST_ARCH == "amd64" ]]; then
     DOCKER_PLATFORM="linux/amd64"
 elif [[ $HOST_ARCH == "arm64" ]]; then
-    DOCKER_PLATFORM="linux/arm64/v8"
+    DOCKER_PLATFORM="linux/arm64"
 else
     echo "Unsupported host architecture: $HOST_ARCH"
     exit 1

scripts/sel4.sh

@@ -25,6 +25,19 @@ test -d "$DIR" || DIR=$PWD
 # tmp space for building
 : "${TEMP_DIR:=/tmp}"
 
+X64_CROSS="g++-10-aarch64-linux-gnu gcc-10-aarch64-linux-gnu gcc-10-multilib"
+ARM64_CROSS="gcc-10-x86-64-linux-gnu:arm64 g++-10-x86-64-linux-gnu:arm64 \
+             gcc-10-i686-linux-gnu:arm64 g++-10-i686-linux-gnu:arm64"
+
+if [[ $DOCKER_PLATFORM=="linux/amd64" ]]; then
+    CROSS="$X64_CROSS"
+elif [[ $DOCKER_PLATFORM=="linux/arm64" ]]; then
+    CROSS="$ARM64_CROSS"
+else
+    echo "Unkown docker platform $DOCKER_PLATFORM"
+    exit 1
+fi
+
 # Add additional architectures for cross-compiled libraries.
 # Install the tools required to compile seL4.
 as_root apt-get update -q
@@ -65,13 +78,10 @@ as_root apt-get install -y --no-install-recommends \
     gcc-10-arm-linux-gnueabihf \
     gcc-10-base \
     gcc-riscv64-unknown-elf \
-    gcc-10-x86-64-linux-gnu:arm64 \
-    g++-10-x86-64-linux-gnu:arm64 \
-    gcc-10-i686-linux-gnu:arm64 \
-    g++-10-i686-linux-gnu:arm64 \
     libclang-11-dev \
     qemu-system-arm \
-    qemu-system-misc
+    qemu-system-misc \
+    $CROSS
     # end of list
 
 if [ "$DESKTOP_MACHINE" = "no" ] ; then
@@ -91,6 +101,20 @@ if [ "$DESKTOP_MACHINE" = "no" ] ; then
             as_root update-alternatives --auto "$name" || :
         done
     done
+    if [[ $DOCKER_PLATFORM=="linux/amd64" ]]; then
+        MORE_COMP=""
+    elif [[ $DOCKER_PLATFORM=="linux/arm64" ]]; then
+        MORE_COMP="gcc-${compiler_version}-x86-64-linux-gnu \
+                   cpp-${compiler_version}-x86-64-linux-gnu \
+                   g++-${compiler_version}-x86-64-linux-gnu \
+                   gcc-${compiler_version}-i686-linux-gnu \
+                   cpp-${compiler_version}-i686-linux-gnu \
+                   g++-${compiler_version}-i686-linux-gnu \
+                  "
+    else
+        echo "Unkown docker platform $DOCKER_PLATFORM"
+        exit 1
+    fi
 
     for compiler in gcc-${compiler_version}-arm-linux-gnueabi \
                     cpp-${compiler_version}-arm-linux-gnueabi \
@@ -101,12 +125,7 @@ if [ "$DESKTOP_MACHINE" = "no" ] ; then
                     gcc-${compiler_version}-arm-linux-gnueabihf \
                     cpp-${compiler_version}-arm-linux-gnueabihf \
                     g++-${compiler_version}-arm-linux-gnueabihf \
-                    gcc-${compiler_version}-x86-64-linux-gnu \
-                    cpp-${compiler_version}-x86-64-linux-gnu \
-                    g++-${compiler_version}-x86-64-linux-gnu \
-                    gcc-${compiler_version}-i686-linux-gnu \
-                    cpp-${compiler_version}-i686-linux-gnu \
-                    g++-${compiler_version}-i686-linux-gnu \
+                    $MORE_COMP
                     # end of list
     do
         echo ${compiler}