build: duktape needs to be installed

fix cppalliance#405

Author: alandefreitas

Diff for: .github/workflows/ci.yml

@@ -76,7 +76,20 @@ jobs:
           substring="C:/Program Files/Microsoft Visual Studio/2022/Community/DIA SDK/lib/amd64/diaguids.lib;"
           sed -i "s|$substring||g" "$llvm_dir/RelWithDebInfo/lib/cmake/llvm/LLVMExports.cmake"
           echo "llvm_dir=$llvm_dir"
-          find "$llvm_dir" -type f
+          # find "$llvm_dir" -type f
+          
+      - name: Install Duktape
+        id: duktape-install
+        shell: bash
+        run: |
+          set -xe
+          curl -L -o "duktape-2.7.0.tar.xz" "https://github.com/svaarala/duktape/releases/download/v2.7.0/duktape-2.7.0.tar.xz"
+          duktape_dir="${{runner.tool_cache}}/duktape"
+          duktape_dir=$(echo "$duktape_dir" | sed 's/\\/\//g')
+          mkdir -p "$duktape_dir"
+          tar -xvf "duktape-2.7.0.tar.xz" -C "$duktape_dir"
+          echo "duktape-dir=$duktape_dir/duktape-2.7.0" >> $GITHUB_OUTPUT
+          echo "duktape_dir=$duktape_dir/duktape-2.7.0"
 
       - name: Install Node.js
         uses: actions/setup-node@v3
@@ -115,7 +128,7 @@ jobs:
           cxx: ${{ steps.setup-cpp.outputs.cxx || matrix.cxx }}
           cxxflags: ${{ matrix.cxxflags }}${{ ( matrix.compiler == 'gcc' && ' -static-libstdc++') || '' }}${{ ( matrix.asan && ' -static-libasan') || '' }}${{ ( matrix.tsan && ' -static-libtsan') || '' }}
           install-prefix: .local
-          extra-args: ${{ format('-D LLVM_ROOT="{0}" -D Clang_ROOT="{0}" -D CMAKE_EXPORT_COMPILE_COMMANDS=ON', steps.llvm-install.outputs.llvm-dir || '/usr/local') }}
+          extra-args: ${{ format('-D LLVM_ROOT="{0}" -D Clang_ROOT="{0}" -D DUKTAPE_SOURCE_ROOT="{1}" -D CMAKE_EXPORT_COMPILE_COMMANDS=ON', steps.llvm-install.outputs.llvm-dir || '/usr/local', steps.duktape-install.outputs.duktape-dir) }}
           export-compile-commands: ${{ matrix.time-trace }}
           package: ${{ matrix.is-main }}
           package-dir: packages

Diff for: CMakeLists.txt

@@ -75,7 +75,13 @@ string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
 string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
 
 # Duktape
-set(DUKTAPE_SOURCE_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/third-party/duktape)
+set(DUKTAPE_SOURCE_ROOT "" CACHE STRING "Root of the Duktape source tree")
+if (NOT DUKTAPE_SOURCE_ROOT)
+    message(FATAL_ERROR
+            "Duktape source root not found.\n"
+            "Please set DUKTAPE_SOURCE_ROOT to the root of the Duktape source tree.\n"
+            "https://github.com/svaarala/duktape/releases/download/v2.7.0/duktape-2.7.0.tar.xz\n")
+endif()
 add_library(duktape ${DUKTAPE_SOURCE_ROOT}/src/duktape.c ${DUKTAPE_SOURCE_ROOT}/src/duktape.h)
 target_include_directories(
     duktape PUBLIC