add cross-compiling support from project_options

CMakeLists.txt

@@ -4,17 +4,29 @@ cmake_minimum_required(VERSION 3.16)
 # If commented, the latest supported standard for your compiler is automatically set.
 # set(CMAKE_CXX_STANDARD 20)
 
-# Add project_options v0.26.2
+
+# Add project_options
 # https://github.com/aminya/project_options
-# Change the version in the following URL to update the package (watch the releases of the repository for future updates)
-include(FetchContent)
-FetchContent_Declare(_project_options URL https://github.com/aminya/project_options/archive/refs/tags/v0.26.2.zip)
-FetchContent_MakeAvailable(_project_options)
-include(${_project_options_SOURCE_DIR}/Index.cmake)
+# Change the version to update the package (watch the releases of the repository for future updates)
+include(cmake/CPM.cmake)
+CPMAddPackage(
+  NAME              project_options
+  GITHUB_REPOSITORY aminya/project_options
+  #VERSION           0.26.3
+  GIT_TAG           main
+  DOWNLOAD_ONLY
+)
+if(project_options_ADDED)
+  include(${project_options_SOURCE_DIR}/Index.cmake)
+endif()
 
 # Define the features of the project
 include("./Features.cmake")
 
+# enable cross-compiling: - should be called before run_vcpkg()
+if(ENABLE_CROSS_COMPILING)
+  enable_cross_compiler()
+endif()
 # install vcpkg dependencies: - should be called before defining project()
 run_vcpkg()
 

Features.cmake

@@ -9,3 +9,5 @@ option(FEATURE_DOCS "Enable the docs" OFF)
 
 # fuzz tests
 option(FEATURE_FUZZ_TESTS "Enable the fuzz tests" OFF)
+
+option(ENABLE_CROSS_COMPILING "Detect cross compiler and setup toolchain" OFF)

Taskfile.yml

@@ -50,6 +50,13 @@ tasks:
         FEATURE_TESTS: OFF
         CMAKE_BUILD_TYPE: Debug
 
+  build_cross_mingw:
+    - task: build_template
+      vars:
+        FEATURE_TESTS: OFF
+        CMAKE_BUILD_TYPE: Release
+        CONFIGURE_FLAGS: -DENABLE_CROSS_COMPILING:BOOL=ON -DDEFAULT_TRIPLET=x64-mingw-dynamic
+
   install:
     - task: build
     - cmake --install ./build --prefix {{.INSTALL_PREFIX | default "./install"}}

cmake/CPM.cmake

@@ -0,0 +1,21 @@
+set(CPM_DOWNLOAD_VERSION 0.35.0)
+
+if(CPM_SOURCE_CACHE)
+  # Expand relative path. This is important if the provided path contains a tilde (~)
+  get_filename_component(CPM_SOURCE_CACHE ${CPM_SOURCE_CACHE} ABSOLUTE)
+  set(CPM_DOWNLOAD_LOCATION "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+elseif(DEFINED ENV{CPM_SOURCE_CACHE})
+  set(CPM_DOWNLOAD_LOCATION "$ENV{CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+else()
+  set(CPM_DOWNLOAD_LOCATION "${CMAKE_BINARY_DIR}/cmake/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+endif()
+
+if(NOT (EXISTS ${CPM_DOWNLOAD_LOCATION}))
+  message(STATUS "Downloading CPM.cmake to ${CPM_DOWNLOAD_LOCATION}")
+  file(DOWNLOAD
+       https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
+       ${CPM_DOWNLOAD_LOCATION}
+  )
+endif()
+
+include(${CPM_DOWNLOAD_LOCATION})