wip

scripts/build-qemu-wasm.sh

@@ -20,26 +20,32 @@ else
     ENGINE=docker
 fi
 
-if [ ! -d "$SRC/.git" ]; then
-    git clone --depth 1 --branch "$TAG" https://github.com/espressif/qemu "$SRC"
-fi
+# Dev Mode - Build directly out of an already-patched working tree (e.g. _scratch/qemu-fix-src);
+# skip clone/commit-check/patch so edits compile incrementally without the patch round-trip.
+if [ -n "${QEMU_WASM_DEV:-}" ]; then
+    cd "$SRC"
+else
+    if [ ! -d "$SRC/.git" ]; then
+        git clone --depth 1 --branch "$TAG" https://github.com/espressif/qemu "$SRC"
+    fi
 
-cd "$SRC"
-if [ "$(git rev-parse HEAD)" != "$COMMIT" ]; then
-    echo "QEMU source must be $COMMIT ($TAG)" >&2
-    exit 1
-fi
+    cd "$SRC"
+    if [ "$(git rev-parse HEAD)" != "$COMMIT" ]; then
+        echo "QEMU source must be $COMMIT ($TAG)" >&2
+        exit 1
+    fi
 
-# Re-apply Patches On Drift - The source tree is a build artifact of the patches; reset and re-apply whenever a patch is newer than the last apply so `make web` never silently rebuilds stale sources.
-STAMP=".xteink-patch-stamp"
-if [ ! -f hw/display/xteink_x3_eink.c ] || [ ! -f tcg/wasm32.c ] \
-    || [ "$ROOT/qemu/patches/0001-xteink-machine.patch" -nt "$STAMP" ] \
-    || [ "$ROOT/qemu/patches/0002-qemu-wasm.patch" -nt "$STAMP" ]; then
-    git reset --hard "$COMMIT"
-    git clean -fdx -e build
-    git apply "$ROOT/qemu/patches/0001-xteink-machine.patch"
-    git apply --whitespace=nowarn "$ROOT/qemu/patches/0002-qemu-wasm.patch"
-    touch "$STAMP"
+    # Re-apply Patches On Drift - The source tree is a build artifact of the patches; reset and re-apply whenever a patch is newer than the last apply so `make web` never silently rebuilds stale sources.
+    STAMP=".xteink-patch-stamp"
+    if [ ! -f hw/display/xteink_x3_eink.c ] || [ ! -f tcg/wasm32.c ] \
+        || [ "$ROOT/qemu/patches/0001-xteink-machine.patch" -nt "$STAMP" ] \
+        || [ "$ROOT/qemu/patches/0002-qemu-wasm.patch" -nt "$STAMP" ]; then
+        git reset --hard "$COMMIT"
+        git clean -fdx -e build
+        git apply "$ROOT/qemu/patches/0001-xteink-machine.patch"
+        git apply --whitespace=nowarn "$ROOT/qemu/patches/0002-qemu-wasm.patch"
+        touch "$STAMP"
+    fi
 fi
 
 printf 'Building Emscripten environment (qemu-wasm %s)\n' "$QEMU_WASM_COMMIT"