build: Handle output files better

cargo.sh

@@ -11,15 +11,21 @@ SOURCE_DIR="$(dirname "$SCRIPT_PATH")"
 
 CARGO_TARGET_DIR="$(pwd)"
 export CARGO_TARGET_DIR
-if [ -n "${1}" ]; then
-    OUT_PATH="$(realpath "$1")"
+if [ "${1}" = "--rename" ]; then
+    shift
+    FILENAME="${1}"
+    shift
+    OUT_PATH="$(realpath "${1}")"
+elif [ "${1}" = "--output" ]; then
+    shift
+    OUT_PATH="$(realpath "${1}")"
+    FILENAME="$(basename "${OUT_PATH}")"
 fi
+shift
 
 cd "$SOURCE_DIR"
-shift
 cargo "$@"
 
 if [ -n "${OUT_PATH}" ]; then
-    FILENAME="$(basename "${OUT_PATH}")"
     cp -a "${CARGO_TARGET_DIR}"/debug/"${FILENAME}" "${OUT_PATH}"
 fi

src/meson.build

@@ -58,7 +58,7 @@ rslibs = custom_target(
     output: ['librs.a'],
     install: false,
     console: true,
-    command: [cargo_script, '@OUTPUT@', 'build', '--lib']
+    command: [cargo_script, '--output', '@OUTPUT@', 'build', '--lib']
 )
 
 build_rstests = custom_target(
@@ -129,8 +129,8 @@ test_layout = custom_target('squeekboard_test_layout',
     build_by_default: true,
     # meson doesn't track all inputs, cargo does
     build_always_stale: true,
-    output: ['test_layout'],
+    output: ['squeekboard_test_layout'],
     console: true,
-    command: [cargo_script, '@OUTPUT@', 'build', '--bin', 'test_layout'],
+    command: [cargo_script, '--rename', 'test_layout', '@OUTPUT@', 'build', '--bin', 'test_layout'],
     install_dir: bindir,
 )