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Add C++20 module cmake target #430

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Add C++20 module cmake target #430

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d4d5de4
Added a CMake target for C++20 modules, to allow adding argparse.cppm…
HodarinS Jul 21, 2026
55f8c67
Added a CMake target for C++20 modules, to allow adding argparse.cppm…
HodarinS Jul 21, 2026
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6 changes: 6 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,8 @@ project(argparse
option(ARGPARSE_INSTALL "Include an install target" ${ARGPARSE_IS_TOP_LEVEL})
option(ARGPARSE_BUILD_TESTS "Build tests" ${ARGPARSE_IS_TOP_LEVEL})
option(ARGPARSE_BUILD_SAMPLES "Build samples" OFF)
option(ARGPARSE_BUILD_MODULES "Build C++ modules support" OFF)
option(ARGPARSE_MODULE_USE_STD_MODULE "Build with modules C++ import std" OFF)

include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
Expand All @@ -28,6 +30,10 @@ target_include_directories(argparse INTERFACE
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>)

if(ARGPARSE_BUILD_MODULES)
add_subdirectory(module)
endif()

if(ARGPARSE_BUILD_SAMPLES)
add_subdirectory(samples)
endif()
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20 changes: 20 additions & 0 deletions module/CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
cmake_minimum_required(VERSION 3.28)

add_library(argparse_modules)

add_library(argparse::modules ALIAS argparse_modules)

target_sources(
argparse_modules PUBLIC FILE_SET CXX_MODULES FILES
argparse.cppm)

target_link_libraries(argparse_modules PRIVATE argparse::argparse)

if(ARGPARSE_MODULE_USE_STD_MODULE)
target_compile_definitions(argparse_modules
PRIVATE -DARGPARSE_MODULE_USE_STD_MODULE=1)

target_compile_features(argparse_modules PUBLIC cxx_std_23)
else()
target_compile_features(argparse_modules PUBLIC cxx_std_20)
endif()