Standard library incompatibility fix by packaging libc++

cppalliance · Jul 26, 2024 · 586b602 · 586b602
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commit 586b602
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Showing 18 changed files with 376 additions and 52 deletions.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -104,9 +104,9 @@ jobs:
           cd fmt
           cmake -S . -B ./build -D FMT_DOC=OFF -D FMT_TEST=OFF -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} -DCMAKE_CXX_COMPILER=${{ steps.setup-cpp.outputs.cxx }} -DCMAKE_C_COMPILER=${{ steps.setup-cpp.outputs.cc }}
           N_CORES=$(nproc 2>/dev/null || echo 1)
-          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES 
+          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES
           cmake --install ./build --prefix ./install
-          
+
           fmt_root=$(pwd)/install
           if [[ ${{ runner.os }} == 'Windows' ]]; then
               fmt_root=$(echo "$fmt_root" | sed 's/\\/\//g')
@@ -135,9 +135,9 @@ jobs:
           fi
           cmake -S . -B ./build -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} -DCMAKE_CXX_COMPILER=${{ steps.setup-cpp.outputs.cxx }} -DCMAKE_C_COMPILER=${{ steps.setup-cpp.outputs.cc }}
           N_CORES=$(nproc 2>/dev/null || echo 1)
-          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES 
+          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES
           cmake --install ./build --prefix ./install
-          
+
           duktape_root=$(pwd)/install
           if [[ ${{ runner.os }} == 'Windows' ]]; then
               duktape_root=$(echo "$duktape_root" | sed 's/\\/\//g')
@@ -159,12 +159,12 @@ jobs:
           git config --global advice.detachedHead false
           git clone https://github.com/GNOME/libxml2 --branch v2.12.6 --depth 1
           cd libxml2
-          
+
           cmake -S . -B ./build -DCMAKE_BUILD_TYPE=Release -DLIBXML2_WITH_PROGRAMS=ON -DLIBXML2_WITH_FTP=OFF -DLIBXML2_WITH_HTTP=OFF -DLIBXML2_WITH_ICONV=OFF -DLIBXML2_WITH_LEGACY=OFF -DLIBXML2_WITH_LZMA=OFF -DLIBXML2_WITH_ZLIB=OFF -DLIBXML2_WITH_ICU=OFF -DLIBXML2_WITH_TESTS=OFF -DLIBXML2_WITH_HTML=ON -DLIBXML2_WITH_C14N=ON -DLIBXML2_WITH_CATALOG=ON -DLIBXML2_WITH_DEBUG=ON -DLIBXML2_WITH_ISO8859X=ON -DLIBXML2_WITH_MEM_DEBUG=OFF -DLIBXML2_WITH_MODULES=ON -DLIBXML2_WITH_OUTPUT=ON -DLIBXML2_WITH_PATTERN=ON -DLIBXML2_WITH_PUSH=ON -DLIBXML2_WITH_PYTHON=OFF -DLIBXML2_WITH_READER=ON -DLIBXML2_WITH_REGEXPS=ON -DLIBXML2_WITH_SAX1=ON -DLIBXML2_WITH_SCHEMAS=ON -DLIBXML2_WITH_SCHEMATRON=ON -DLIBXML2_WITH_THREADS=ON -DLIBXML2_WITH_THREAD_ALLOC=OFF -DLIBXML2_WITH_TREE=ON -DLIBXML2_WITH_VALID=ON -DLIBXML2_WITH_WRITER=ON -DLIBXML2_WITH_XINCLUDE=ON -DLIBXML2_WITH_XPATH=ON -DLIBXML2_WITH_XPTR=ON -DCMAKE_CXX_COMPILER=${{ steps.setup-cpp.outputs.cxx || steps.parameters.outputs.clang-bin }} -DCMAKE_C_COMPILER=${{ steps.setup-cpp.outputs.cc || steps.parameters.outputs.clang-bin }}
           N_CORES=$(nproc 2>/dev/null || echo 1)
-          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES 
+          cmake --build ./build --config ${{ matrix.build-type }} --parallel $N_CORES
           cmake --install ./build --prefix ./install
-          
+
           libxml2_root=$(pwd)/install
           if [[ ${{ runner.os }} == 'Windows' ]]; then
               libxml2_root=$(echo "$libxml2_root" | sed 's/\\/\//g')
@@ -188,6 +188,14 @@ jobs:
           fi
           echo -E "llvm-root=$llvm_root" >> $GITHUB_OUTPUT
 
+          libcxx_root=$(pwd)/third-party/llvm-project/install/libcxx
+          if [[ ${{ runner.os }} == 'Windows' ]]; then
+              libcxx_root=$(echo "$libcxx_root" | sed 's/\\/\//g')
+              libcxx_root=$(echo $libcxx_root | sed 's|^/d/|D:/|')
+              echo "$libcxx_root"
+          fi
+          echo -E "libcxx-root=$libcxx_root" >> $GITHUB_OUTPUT
+
       - name: LLVM Binaries
         id: llvm-cache
         uses: actions/cache@v4
@@ -202,7 +210,7 @@ jobs:
         run: |
           # LLVM is be installed with the default compiler
           set -x
-          
+
           # Shallow clone LLVM_HASH in ../third-party/llvm
           cd ..
           mkdir -p third-party/llvm-project
@@ -214,19 +222,19 @@ jobs:
           git remote add origin https://github.com/llvm/llvm-project.git
           git fetch --depth 1 origin ${{ steps.llvm-parameters.outputs.llvm-hash }}
           git checkout FETCH_HEAD
-        
+
           # Copy presets
           cp ../../mrdocs/third-party/llvm/CMakePresets.json ./llvm
           cp ../../mrdocs/third-party/llvm/CMakeUserPresets.json.example ./llvm/CMakeUserPresets.json
-          
+
           # Build
           cd llvm
           llvm_root=$(pwd)
           cmake --version
           cmake -S . -B ./build --preset=${{ steps.llvm-parameters.outputs.llvm-build-preset }} -DCMAKE_CXX_COMPILER=${{ steps.setup-cpp.outputs.cxx }} -DCMAKE_C_COMPILER=${{ steps.setup-cpp.outputs.cc }}
           if [[ ${{ runner.os }} == 'Linux' ]]; then
               cmake --build ./build --target help
-          fi          
+          fi
           N_CORES=$(nproc 2>/dev/null || echo 1)
           if [ ${{ runner.os }} != 'Windows' ]; then
               cmake --build ./build --config Release --parallel $N_CORES
@@ -253,6 +261,63 @@ jobs:
           fi
           cmake --install ./build --prefix "$llvm_project_root"/install
 
+      - name: LibC++ Binaries
+        id: libcxx-cache
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.llvm-parameters.outputs.libcxx-root }}
+          key: libcxx-${{ runner.os }}-${{ matrix.compiler }}-${{ matrix.version }}-${{ steps.llvm-parameters.outputs.llvm-hash }}
+
+      - name: Install LibC++
+        id: libcxx-install
+        if: ${{ steps.libcxx-cache.outputs.cache-hit != 'true'}}
+        shell: bash
+        run: |
+          set -x
+
+          cd ..
+          llvm_project_root="third-party/llvm-project"
+          if [ ! -d "$llvm_project_root" ]; then
+              mkdir -p $llvm_project_root
+              cd $llvm_project_root
+              git config --global init.defaultBranch master
+              git config --global advice.detachedHead false
+              git init
+              git remote add origin https://github.com/llvm/llvm-project.git
+              git fetch --depth 1 origin ${{ steps.llvm-parameters.outputs.llvm-hash }}
+              git checkout FETCH_HEAD
+          fi
+
+          export CXX="$llvm_project_root/install/bin/clang++"
+          export CC="$llvm_project_root/install/bin/clang"
+
+          cd $llvm_project_root
+
+          if [ ${{ runner.os }} != 'Windows' ]; then
+            cmake -G Ninja  \
+                  -S runtimes  \
+                  -B build-libcxx  \
+                  -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind"  \
+                  -DCMAKE_INSTALL_PREFIX="$llvm_project_root/install/libcxx"
+
+            ninja -C build-libcxx cxx cxxabi unwind
+            ninja -C build-libcxx install-cxx install-cxxabi install-unwind
+          else
+            cmake -G Ninja \
+                  -S runtimes \
+                  -B build-libcxx \
+                  -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+                  -DCMAKE_INSTALL_PREFIX="$llvm_project_root/install/libcxx" \
+                  -DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
+                  -DLIBCXXABI_ENABLE_SHARED=OFF \
+                  -DLIBCXXABI_ENABLE_STATIC=ON \
+                  -DLIBCXX_ENABLE_SHARED=OFF \
+                  -DLIBCXX_NO_VCRUNTIME=ON \
+                  -DCMAKE_CXX_FLAGS="-D__ORDER_LITTLE_ENDIAN__=1234 -D__ORDER_BIG_ENDIAN__=4321 -D__BYTE_ORDER__=__ORDER_LITTLE_ENDIAN__"
+            ninja -C build-libcxx cxx
+            ninja -C build-libcxx install-cxx
+          fi
+
       - name: Install Node.js
         uses: actions/setup-node@v3
         with:
@@ -278,7 +343,7 @@ jobs:
             -D duktape_ROOT=${{ steps.duktape-install.outputs.duktape-root }}
             -D Duktape_ROOT=${{ steps.duktape-install.outputs.duktape-root }}
             -D fmt_ROOT=${{ steps.fmt-install.outputs.fmt-root }}
-            ${{ (steps.libxml2-install.outputs.libxml2-root && format('-D libxml2_ROOT={0}', steps.libxml2-install.outputs.libxml2-root)) || '' }}  
+            ${{ (steps.libxml2-install.outputs.libxml2-root && format('-D libxml2_ROOT={0}', steps.libxml2-install.outputs.libxml2-root)) || '' }}
             ${{ (steps.libxml2-install.outputs.libxml2-root && format('-D LibXml2_ROOT={0}', steps.libxml2-install.outputs.libxml2-root)) || '' }}
           export-compile-commands: true
           run-tests: true
@@ -440,13 +505,13 @@ jobs:
           export CXX
           CC="${{ steps.setup-cpp.outputs.cc }}"
           export CC
-          
+
           declare -a generators=(
             "adoc"
             "html"
             "xml"
           )
-          
+
           for variant in single multi; do
             for generator in "${generators[@]}"; do
               [[ $variant = multi ]] && multipage="true" || multipage="false"
@@ -500,15 +565,15 @@ jobs:
         id: compare-demos
         run: |
           set -x
-          
+
           # Define URLs and directories
           LOCAL_DEMOS_DIR="./demos/"
           PREV_DEMOS_DIR="./demos-previous/"
           DIFF_DIR="./demos-diff/"
-          
+
           # Create directories if they don't exist
           mkdir -p $PREV_DEMOS_DIR $DIFF_DIR
-          
+
           # Iterate over the previous files and compare them with the corresponding local files
           find $PREV_DEMOS_DIR -type f | while read previous_file; do
               # Derive the corresponding local file path
@@ -526,7 +591,7 @@ jobs:
                   cat "$previous_file" >> "$diff_output"
               fi
           done
-          
+
           # Iterate over the local files to find new files
           find $LOCAL_DEMOS_DIR -type f | while read local_file; do
               previous_file="${PREV_DEMOS_DIR}${local_file#$LOCAL_DEMOS_DIR}"
@@ -537,7 +602,7 @@ jobs:
                   echo "NEW CONTENT OF THE FILE IS:" >> "$diff_output"
               fi
           done
-          
+
           # Check if the diff directory is empty
           if [[ -z $(ls -A $DIFF_DIR) ]]; then
               echo "No differences found."

diff --git a/.gitignore b/.gitignore
@@ -10,4 +10,6 @@
 /test-files/**/*.adoc
 /test-files/**/*.bad.xml
 docs/node_modules
-docs/build
+docs/build
+share/mrdocs/libcxx/
+share/mrdocs/clang/
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -92,6 +92,19 @@ elseif (LLVM_ROOT)
 endif()
 find_package(LLVM REQUIRED CONFIG)
 find_package(Clang REQUIRED CONFIG)
+
+message(STATUS "Clang_FOUND:        ${Clang_FOUND}")
+message(STATUS "Clang_INCLUDE_DIRS: ${Clang_INCLUDE_DIRS}")
+message(STATUS "Clang_LIBRARIES:    ${Clang_LIBRARIES}")
+message(STATUS "Clang_DEFINITIONS:  ${Clang_DEFINITIONS}")
+message(STATUS "Clang_EXECUTABLE:   ${Clang_EXECUTABLE}")
+message(STATUS "Clang_VERSION:      ${Clang_VERSION}")
+
+if (LLVM_ROOT)
+    set(LIBCXX_DIR "${LLVM_ROOT}/../install/libcxx/include/c++/v1/")
+    set(CLANG_19_DIR "${LLVM_ROOT}/lib/clang/19/include/")
+endif()
+
 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
 include(HandleLLVMOptions)
 add_definitions(${LLVM_DEFINITIONS})
@@ -284,11 +297,11 @@ if (MRDOCS_BUILD_TESTS)
     endif ()
     target_compile_definitions(mrdocs-test PRIVATE -DMRDOCS_TEST_FILES_DIR="${CMAKE_CURRENT_SOURCE_DIR}/test-files")
     add_test(NAME mrdocs-unit-tests COMMAND mrdocs-test --unit=true)
-    add_test(NAME mrdocs-golden-tests COMMAND mrdocs-test --unit=false --action=test "${PROJECT_SOURCE_DIR}/test-files/golden-tests" --addons="${CMAKE_SOURCE_DIR}/share/mrdocs/addons")
+    add_test(NAME mrdocs-golden-tests COMMAND mrdocs-test --unit=false --action=test "${PROJECT_SOURCE_DIR}/test-files/golden-tests" --addons="${CMAKE_SOURCE_DIR}/share/mrdocs/addons" --libcxx-paths="${LIBCXX_DIR}")
     foreach (action IN ITEMS create update)
         add_custom_target(
             mrdocs-${action}-test-fixtures
-            COMMAND mrdocs-test --unit=false --action=${action} "${PROJECT_SOURCE_DIR}/test-files/golden-tests" --addons="${CMAKE_SOURCE_DIR}/share/mrdocs/addons"
+            COMMAND mrdocs-test --unit=false --action=${action} "${PROJECT_SOURCE_DIR}/test-files/golden-tests" --addons="${CMAKE_SOURCE_DIR}/share/mrdocs/addons" --libcxx-paths="${LIBCXX_DIR}"
             DEPENDS mrdocs-test
         )
     endforeach ()
@@ -319,6 +332,22 @@ if (MRDOCS_BUILD_TESTS)
     endif()
 endif()
 
+#-------------------------------------------------
+#
+# Copy libc++ and clang headers
+#
+#-------------------------------------------------
+
+set(MRDOCS_SHARE_LIBCXX_DIR "${CMAKE_CURRENT_BINARY_DIR}/../share/mrdocs/libcxx")
+message(STATUS "Copying libc++ headers to ${MRDOCS_SHARE_LIBCXX_DIR}")
+file(MAKE_DIRECTORY ${MRDOCS_SHARE_LIBCXX_DIR})
+file(COPY ${LIBCXX_DIR}/ DESTINATION ${MRDOCS_SHARE_LIBCXX_DIR})
+
+set(MRDOCS_SHARE_CLANG_DIR "${CMAKE_CURRENT_BINARY_DIR}/../share/mrdocs/clang")
+message(STATUS "Copying clang headers to ${MRDOCS_SHARE_CLANG_DIR}")
+file(MAKE_DIRECTORY ${MRDOCS_SHARE_CLANG_DIR})
+file(COPY ${CLANG_19_DIR}/ DESTINATION ${MRDOCS_SHARE_CLANG_DIR})
+
 #-------------------------------------------------
 #
 # Docs

diff --git a/include/mrdocs/Config.hpp b/include/mrdocs/Config.hpp
@@ -104,6 +104,12 @@ class MRDOCS_DECL
         /// from CMakeLists.txt
         std::string cmake;
 
+        /// True if the compiler has to use just the system's standard library
+        bool useSystemStdLib = false;
+
+        /// Standard Library include paths
+        std::vector<std::string> stdLibPaths;
+
         /// Additional defines passed to the compiler
         std::vector<std::string> defines;
 

diff --git a/include/mrdocs/ConfigOptions.inc b/include/mrdocs/ConfigOptions.inc
@@ -69,6 +69,8 @@ COMMON_OPTION (compilationDatabase     , compilation-database    , Path to the c
 // Build options
 COMMON_OPTION (cmake                   , cmake                   , CMake arguments when generating the compilation database from CMakeLists.txt)
 COMMON_OPTION (defines                 , defines                 , Additional defines passed to the compiler)
+COMMON_OPTION (useSystemStdLib         , use-system-stdlib       , True if the compiler has to use just the system standard library)
+COMMON_OPTION (stdLibPaths             , stdlib-paths            , Standard Library include paths)
 
 // Generators
 COMMON_OPTION (generate                , generate                , Documentation generator. Supported generators are: adoc/html/xml)

diff --git a/share/cmake/MrDocs.cmake b/share/cmake/MrDocs.cmake
@@ -146,6 +146,12 @@ function(add_mrdocs MRDOCS_TARGET_NAME)
         set(MRDOCS_TARGET_OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/mrdocs)
     endif()
 
+    #-------------------------------------------------
+    # LibC++ paths
+    #-------------------------------------------------
+    if (NOT DEFINED MRDOCS_LIBCXX_PATHS)
+        set(MRDOCS_LIBCXX_PATHS ${CMAKE_SOURCE_DIR}/share/libcxx)
+    endif()
 
     #-------------------------------------------------
     # Custom target