Import LinuxCNC source tree

tests/lowlevel/emcmot-error-mpsc/test.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+# Concurrency / correctness test for the emcmotError MPSC ring buffer.
+# RIP-only: builds the test driver against the in-tree motion sources.
+
+SCRIPTDIR="$(cd "$(dirname "$0")" && pwd)"
+TOPDIR="$(cd "$SCRIPTDIR/../../.." && pwd)"
+SRCDIR="${TOPDIR}/src/emc/motion"
+INCDIR="${TOPDIR}/include"
+
+if [ ! -f "${SRCDIR}/emcmotutil.c" ]; then
+    echo "skip: motion sources not found (RIP build required)"
+    exit 0
+fi
+
+gcc -O -pthread -DULAPI -Wall \
+    -I"${INCDIR}" \
+    -I"${SRCDIR}" \
+    "${SCRIPTDIR}/test.c" \
+    "${SRCDIR}/emcmotutil.c" \
+    "${SRCDIR}/dbuf.c" \
+    "${SRCDIR}/stashf.c" \
+    -o "${SCRIPTDIR}/test" || { echo "compile failed"; exit 1; }
+
+"${SCRIPTDIR}/test"
+exitval=$?
+rm -f "${SCRIPTDIR}/test"
+exit $exitval