build.sh

#!/usr/bin/env bash
set -euo pipefail

# ============================================
#  mGear weightDriver Build Script (macOS/Linux)
# ============================================
#
# Usage:
#   ./build.sh [MAYA_VERSION] [--maya-path PATH] [--generator GENERATOR]
#
# Examples:
#   ./build.sh                          Build for Maya 2027 (default)
#   ./build.sh 2024                     Build for Maya 2024
#   ./build.sh 2027 --maya-path /opt/maya-devkit
#   ./build.sh 2027 --generator Ninja

# ----- Configuration Defaults -----
MAYA_VERSION="2027"
MAYA_INSTALL_BASE_PATH=""
CMAKE_GENERATOR=""

# ----- Argument Parsing -----
while [[ $# -gt 0 ]]; do
    case "$1" in
        --maya-path)
            MAYA_INSTALL_BASE_PATH="$2"
            shift 2
            ;;
        --generator)
            CMAKE_GENERATOR="$2"
            shift 2
            ;;
        --help|-h)
            echo "Usage: $0 [MAYA_VERSION] [--maya-path PATH] [--generator GENERATOR]"
            echo ""
            echo "Arguments:"
            echo "  MAYA_VERSION    Maya year version (default: 2027)"
            echo "  --maya-path     Override Maya/devkit install base path"
            echo "  --generator     Override CMake generator (e.g. 'Ninja')"
            echo "  --help, -h      Show this help message"
            echo ""
            echo "Examples:"
            echo "  $0                              Build for Maya 2027"
            echo "  $0 2024                         Build for Maya 2024"
            echo "  $0 2027 --maya-path /opt/maya-devkit"
            echo "  $0 2027 --generator Ninja"
            exit 0
            ;;
        [0-9][0-9][0-9][0-9])
            MAYA_VERSION="$1"
            shift
            ;;
        *)
            echo "ERROR: Unknown argument: $1"
            echo "Run '$0 --help' for usage."
            exit 1
            ;;
    esac
done

# ----- Platform Detection -----
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

case "$(uname -s)" in
    Darwin)
        PLATFORM_DIR="macOS"
        PLUGIN_EXT=".bundle"
        ;;
    Linux)
        PLATFORM_DIR="linux64"
        PLUGIN_EXT=".so"
        ;;
    *)
        echo "ERROR: Unsupported platform: $(uname -s)"
        exit 1
        ;;
esac

# ----- Derived Paths -----
CMAKE_PROJECT_NAME="mGearWeightDriver"
BUILD_DIR="${SCRIPT_DIR}/build/maya${MAYA_VERSION}"
DEPLOY_DIR="${SCRIPT_DIR}/modules/weightDriver/plug-ins/${PLATFORM_DIR}/${MAYA_VERSION}"
DEPLOY_PLUGIN="${DEPLOY_DIR}/${CMAKE_PROJECT_NAME}${PLUGIN_EXT}"

# ----- Status Message -----
echo "============================================"
echo " mGear weightDriver Build Script ($(uname -s))"
echo "============================================"
echo " Maya Version:  ${MAYA_VERSION}"
echo " Platform:      ${PLATFORM_DIR}"
echo " Build Dir:     ${BUILD_DIR}"
echo " Deploy Dir:    ${DEPLOY_DIR}"
echo " Plugin Name:   ${CMAKE_PROJECT_NAME}${PLUGIN_EXT}"
if [[ -n "${MAYA_INSTALL_BASE_PATH}" ]]; then
    echo " Maya SDK Path: ${MAYA_INSTALL_BASE_PATH}"
fi
if [[ -n "${CMAKE_GENERATOR}" ]]; then
    echo " Generator:     ${CMAKE_GENERATOR}"
fi
echo "============================================"

# ----- Clean and Create Build Directory -----
if [[ -d "${BUILD_DIR}" ]]; then
    echo "Cleaning existing build directory..."
    rm -rf "${BUILD_DIR}"
fi
mkdir -p "${BUILD_DIR}"

# ----- CMake Configure -----
echo ""
echo "[1/3] Running CMake configure..."

CMAKE_ARGS=("-DMAYA_VERSION=${MAYA_VERSION}" "-DCMAKE_BUILD_TYPE=Release")
if [[ -n "${MAYA_INSTALL_BASE_PATH}" ]]; then
    CMAKE_ARGS+=("-DMAYA_INSTALL_BASE_PATH=${MAYA_INSTALL_BASE_PATH}")
fi

GENERATOR_ARGS=()
if [[ -n "${CMAKE_GENERATOR}" ]]; then
    GENERATOR_ARGS=(-G "${CMAKE_GENERATOR}")
fi

cmake -S "${SCRIPT_DIR}" -B "${BUILD_DIR}" "${GENERATOR_ARGS[@]+"${GENERATOR_ARGS[@]}"}" "${CMAKE_ARGS[@]}"

# ----- CMake Build -----
echo ""
echo "[2/3] Building plugin (Release)..."
cmake --build "${BUILD_DIR}" --config Release

# ----- Deploy -----
echo ""
echo "[3/3] Deploying plugin..."

# Find the compiled plugin (handle both multi-config and single-config layouts)
SOURCE_PLUGIN=""
for candidate in \
    "${BUILD_DIR}/source/${CMAKE_PROJECT_NAME}${PLUGIN_EXT}" \
    "${BUILD_DIR}/source/Release/${CMAKE_PROJECT_NAME}${PLUGIN_EXT}"; do
    if [[ -f "${candidate}" ]]; then
        SOURCE_PLUGIN="${candidate}"
        break
    fi
done

if [[ -z "${SOURCE_PLUGIN}" ]]; then
    echo "ERROR: Cannot find compiled plugin. Searched:"
    echo "  ${BUILD_DIR}/source/${CMAKE_PROJECT_NAME}${PLUGIN_EXT}"
    echo "  ${BUILD_DIR}/source/Release/${CMAKE_PROJECT_NAME}${PLUGIN_EXT}"
    exit 1
fi

mkdir -p "${DEPLOY_DIR}"
cp -v "${SOURCE_PLUGIN}" "${DEPLOY_PLUGIN}"

echo ""
echo "============================================"
echo " BUILD SUCCESSFUL"
echo " Plugin: ${DEPLOY_PLUGIN}"
echo "============================================"