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Export cmake targets #1041

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47 changes: 43 additions & 4 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,19 @@
#
# Todo
# Test build for Windows, Mac and mingw.
#
# Installs the library after build:
# cmake --install path/to/build --prefix path/to/install
#
# Then the target then can be imported by another cmake project like this:
# find_package(godot-cpp CONFIG REQUIRED)
#
# add_library(libfoo SHARED)
# set_target_properties(libfoo PROPERTIES POSITION_INDEPENDENT_CODE ON)
# target_link_libraries(libfoo PUBLIC godot-cpp::godot-cpp)
#
# Users need to provide the directory of the installation:
# cmake -S . -B path/to/build -DCMAKE_PREFIX_PATH=/absolute/path/to/install

cmake_minimum_required(VERSION 3.13)
project(godot-cpp LANGUAGES CXX)
Expand Down Expand Up @@ -194,10 +207,11 @@ if (GODOT_CPP_SYSTEM_HEADERS)
set(GODOT_CPP_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
endif ()

target_include_directories(${PROJECT_NAME} ${GODOT_CPP_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
include
${CMAKE_CURRENT_BINARY_DIR}/gen/include
${GODOT_GDEXTENSION_DIR}
target_include_directories(${PROJECT_NAME} ${GODOT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/gen/include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/${GODOT_GDEXTENSION_DIR}>
$<INSTALL_INTERFACE:include>
)

# Add the compile flags
Expand Down Expand Up @@ -226,3 +240,28 @@ set_target_properties(${PROJECT_NAME}
RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin"
OUTPUT_NAME "${OUTPUT_NAME}"
)

include(GNUInstallDirs)
include(CMakePackageConfigHelpers)

set(GODOT_CPP_PACKAGE_NAME godot-cpp) # the find_package name
set(GODOT_CPP_PACKAGE_DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/${GODOT_CPP_PACKAGE_NAME}")

configure_package_config_file(${PROJECT_SOURCE_DIR}/cmake/config.cmake.in
"${PROJECT_BINARY_DIR}/cmake/${GODOT_CPP_PACKAGE_NAME}-config.cmake"
INSTALL_DESTINATION "${GODOT_CPP_PACKAGE_DESTINATION}"
)

install(FILES ${PROJECT_BINARY_DIR}/cmake/${GODOT_CPP_PACKAGE_NAME}-config.cmake
DESTINATION ${GODOT_CPP_PACKAGE_DESTINATION}
)

install(TARGETS godot-cpp EXPORT godot_cpp_targets)
install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/gen/include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(FILES ${GODOT_GDEXTENSION_DIR}/gdextension_interface.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

install(EXPORT godot_cpp_targets
NAMESPACE godot-cpp::
FILE ${GODOT_CPP_PACKAGE_NAME}-targets.cmake
DESTINATION "${GODOT_CPP_PACKAGE_DESTINATION}")
5 changes: 5 additions & 0 deletions cmake/config.cmake.in
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
@PACKAGE_INIT@

include("${CMAKE_CURRENT_LIST_DIR}/godot-cpp-targets.cmake")

check_required_components(godot-cpp)