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alvinhochunalvinhochun
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Support Linux cross-compilation with mingw-w64 (#1238)
1 parent 80236cd commit da5579c

5 files changed

Lines changed: 147 additions & 16 deletions

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‎.github/workflows/ci.yml‎

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Original file line numberDiff line numberDiff line change
@@ -331,6 +331,55 @@ jobs:
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$env:UBSAN_OPTIONS = "print_stacktrace=1"
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ctest --verbose
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build-linux-cross-cppwinrt:
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name: 'cross: Cross-build from Linux'
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strategy:
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matrix:
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arch: [i686, x86_64]
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runs-on: ubuntu-22.04
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steps:
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- uses: actions/checkout@v3
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- name: Install cross compiler
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run: |
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arch=${{ matrix.arch }}
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sudo apt-get install g++-mingw-w64-${arch/_/-}
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sudo update-alternatives --set "${{ matrix.arch }}-w64-mingw32-gcc" "/usr/bin/${{ matrix.arch }}-w64-mingw32-gcc-posix"
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sudo update-alternatives --set "${{ matrix.arch }}-w64-mingw32-g++" "/usr/bin/${{ matrix.arch }}-w64-mingw32-g++-posix"
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- name: Cross-build cppwinrt
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run: |
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cmake -S . -B build/cross_x64/ --toolchain cross-mingw-toolchain.cmake \
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-DCMAKE_SYSTEM_PROCESSOR=${{ matrix.arch }} \
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-DCMAKE_BUILD_TYPE=RelWithDebInfo \
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-DCMAKE_CXX_FLAGS="-static" \
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-DCMAKE_INSTALL_PREFIX=$PWD/install/
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cmake --build build/cross_x64/ --target install -j2
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- name: Upload cppwinrt.exe
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uses: actions/upload-artifact@v3
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with:
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name: cross-build-${{ matrix.arch }}-bin
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path: install/bin/cppwinrt.exe
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test-linux-cross-cppwinrt:
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name: 'cross: Test run on Windows'
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needs: build-linux-cross-cppwinrt
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strategy:
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matrix:
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arch: [i686, x86_64]
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runs-on: windows-latest
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steps:
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- name: Fetch cppwinrt executable
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uses: actions/download-artifact@v3
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with:
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name: cross-build-${{ matrix.arch }}-bin
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path: ./
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- name: Run cppwinrt to build projection
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run: |
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.\cppwinrt.exe -in local -out .\ -verbose
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build-msvc-natvis:
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name: 'Build natvis'
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strategy:

‎CMakeLists.txt‎

Lines changed: 22 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -22,13 +22,19 @@ add_compile_definitions(_WIN32_WINNT=0x0602)
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2323
# === prebuild: Generator tool for strings.cpp, strings.h, version.rc ===
2424

25-
set(PREBUILD_SRCS
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prebuild/main.cpp
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prebuild/pch.h
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)
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add_executable(prebuild ${PREBUILD_SRCS})
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target_compile_definitions(prebuild PRIVATE CPPWINRT_VERSION_STRING="${CPPWINRT_BUILD_VERSION}")
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target_include_directories(prebuild PRIVATE cppwinrt/)
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if(CMAKE_CROSSCOMPILING)
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include(ExternalProject)
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ExternalProject_Add(cppwinrt-prebuild
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SOURCE_DIR "${PROJECT_SOURCE_DIR}/prebuild"
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CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> "-DCPPWINRT_BUILD_VERSION=${CPPWINRT_BUILD_VERSION}"
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)
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ExternalProject_Get_Property(cppwinrt-prebuild INSTALL_DIR)
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set(PREBUILD_TOOL "${INSTALL_DIR}/bin/cppwinrt-prebuild")
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unset(INSTALL_DIR)
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else()
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add_subdirectory(prebuild)
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set(PREBUILD_TOOL cppwinrt-prebuild)
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endif()
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3339

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# === Step to create autogenerated files ===
@@ -42,9 +48,9 @@ add_custom_command(
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OUTPUT
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${PROJECT_BINARY_DIR}/strings.cpp
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${PROJECT_BINARY_DIR}/version.rc
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COMMAND "${PROJECT_BINARY_DIR}/prebuild.exe" ARGS "${PROJECT_SOURCE_DIR}/strings" "${PROJECT_BINARY_DIR}"
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COMMAND "${PREBUILD_TOOL}" ARGS "${PROJECT_SOURCE_DIR}/strings" "${PROJECT_BINARY_DIR}"
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DEPENDS
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prebuild
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cppwinrt-prebuild
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${PREBUILD_STRINGS_FILES}
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VERBATIM
5056
)
@@ -137,10 +143,11 @@ int main() {}
137143
else()
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set(XMLLITE_DEF_FILE xmllite)
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endif()
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include(CMakeFindBinUtils)
140147
add_custom_command(
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OUTPUT
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"${PROJECT_BINARY_DIR}/libxmllite.a"
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COMMAND dlltool -k -d "${PROJECT_SOURCE_DIR}/mingw-support/${XMLLITE_DEF_FILE}.def" -l "${PROJECT_BINARY_DIR}/libxmllite.a"
150+
COMMAND "${CMAKE_DLLTOOL}" -k -d "${PROJECT_SOURCE_DIR}/mingw-support/${XMLLITE_DEF_FILE}.def" -l "${PROJECT_BINARY_DIR}/libxmllite.a"
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DEPENDS "${PROJECT_SOURCE_DIR}/mingw-support/${XMLLITE_DEF_FILE}.def"
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VERBATIM
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)
@@ -170,7 +177,9 @@ set(winmd_SOURCE_DIR "${SOURCE_DIR}")
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target_include_directories(cppwinrt PRIVATE "${winmd_SOURCE_DIR}")
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172179

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include(CTest)
174-
if(BUILD_TESTING)
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add_subdirectory(test)
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if(NOT CMAKE_CROSSCOMPILING)
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include(CTest)
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if(BUILD_TESTING)
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add_subdirectory(test)
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endif()
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endif()

‎cppwinrt/main.cpp‎

Lines changed: 11 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -268,9 +268,17 @@ Where <spec> is one or more of:
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if (settings.verbose)
270270
{
271-
char* path = nullptr;
272-
_get_pgmptr(&path);
273-
w.write(" tool: %\n", path);
271+
{
272+
char* path = argv[0];
273+
char path_buf[32768];
274+
DWORD path_size = GetModuleFileNameA(nullptr, path_buf, sizeof(path_buf));
275+
if (path_size)
276+
{
277+
path_buf[sizeof(path_buf) - 1] = 0;
278+
path = path_buf;
279+
}
280+
w.write(" tool: %\n", path);
281+
}
274282
w.write(" ver: %\n", CPPWINRT_VERSION_STRING);
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276284
for (auto&& file : settings.input)

‎cross-mingw-toolchain.cmake‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,42 @@
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# This is a cmake-toolchain(5) file that can be used to cross-build
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# cppwinrt.exe fron Linux or other operating systems using a mingw-w64 cross
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# toolchain. This should work with both GCC-based and llvm-mingw toolchains.
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#
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# Example usage with external toolchain:
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#
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# $ cmake -S . -B build/cross_x64/ \
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# --toolchain cross-mingw-toolchain.cmake \
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# -DMINGW_BIN_PATH=/opt/llvm-mingw/bin \
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# -DCMAKE_BUILD_TYPE=RelWithDebInfo \
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# -DCMAKE_INSTALL_PREFIX=$PWD/install/
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#
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# Example usage with toolchain installed system-wide:
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#
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# $ cmake -S . -B build/cross_i686/ \
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# --toolchain cross-mingw-toolchain.cmake \
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# -DCMAKE_SYSTEM_PROCESSOR=i686 \
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# -DCMAKE_BUILD_TYPE=RelWithDebInfo \
19+
# -DCMAKE_INSTALL_PREFIX=$PWD/install/
20+
21+
22+
set(CMAKE_SYSTEM_NAME Windows)
23+
if(NOT DEFINED CMAKE_SYSTEM_PROCESSOR)
24+
set(CMAKE_SYSTEM_PROCESSOR x86_64)
25+
endif()
26+
27+
set(TOOLCHAIN_PREFIX ${CMAKE_SYSTEM_PROCESSOR}-w64-mingw32)
28+
29+
if(DEFINED MINGW_BIN_PATH)
30+
set(TOOLCHAIN_PREFIX "${MINGW_BIN_PATH}/${TOOLCHAIN_PREFIX}")
31+
endif()
32+
33+
set(CMAKE_C_COMPILER "${TOOLCHAIN_PREFIX}-gcc")
34+
set(CMAKE_CXX_COMPILER "${TOOLCHAIN_PREFIX}-g++")
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set(CMAKE_RC_COMPILER "${TOOLCHAIN_PREFIX}-windres")
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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42+
unset(TOOLCHAIN_PREFIX)

‎prebuild/CMakeLists.txt‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,23 @@
1+
cmake_minimum_required(VERSION 3.16)
2+
3+
project(cppwinrt-prebuild LANGUAGES CXX)
4+
5+
set(CMAKE_CXX_STANDARD 17)
6+
set(CMAKE_CXX_STANDARD_REQUIRED True)
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8+
if(NOT DEFINED CPPWINRT_BUILD_VERSION)
9+
message(FATAL_ERROR "CPPWINRT_BUILD_VERSION has not been defined. You should build the top-level project instead.")
10+
endif()
11+
12+
13+
set(PREBUILD_SRCS
14+
main.cpp
15+
pch.h
16+
)
17+
add_executable(cppwinrt-prebuild ${PREBUILD_SRCS})
18+
target_compile_definitions(cppwinrt-prebuild PRIVATE CPPWINRT_VERSION_STRING="${CPPWINRT_BUILD_VERSION}")
19+
target_include_directories(cppwinrt-prebuild PRIVATE ../cppwinrt/)
20+
21+
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
22+
install(TARGETS cppwinrt-prebuild)
23+
endif()

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