test cross linux-arm with QEMU

.github/workflows/ci-scripts-build.yml

@@ -204,7 +204,7 @@ jobs:
     - name: "apt-get install"
       run: |
         sudo apt-get update
-        sudo apt-get -y install qemu-system-x86 g++-mingw-w64-x86-64 gdb
+        sudo apt-get -y install qemu-system-x86 qemu-user g++-mingw-w64-x86-64 gdb
       if: runner.os == 'Linux'
     - name: Prepare and compile dependencies
       run: python .ci/cue.py prepare

configure/os/CONFIG_SITE.linux-x86.linux-arm

@@ -30,3 +30,7 @@ GNU_DIR = /usr/local/vw/zynq-2016.1/gnu/arm/lin
 # See CONFIG_SITE.Common.linux-arm for other COMMANDLINE_LIBRARY values
 #COMMANDLINE_LIBRARY = READLINE
 
+# If you're building this architecture you _probably_ want to
+# run the tests for it under QEMU, but if not you can turn
+# them off here by commenting out this line:
+CROSS_COMPILER_RUNTEST_ARCHS += $(T_A)

src/tools/makeTestfile.pl

@@ -65,6 +65,10 @@
     # Explicitly fail for other RTEMS targets
     die "$tool: I don't know how to create scripts for testing $TA on $HA\n";
 }
+elsif ($HA =~ /^linux-x86/ && $TA =~ /^linux-arm/) {
+    $exec = "qemu-arm-static -L /usr/arm-linux-gnueabihf $exe";
+    $error= "qemu-arm-static ... $exe";
+}
 else {
     # Assume it's directly executable on other targets
     $error = $exec = "./$exe";