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https://github.com/ocornut/imgui.git
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CMakeLists.txt: Preserve header directory structure when installing library target.
This commit adds FILE_SET features to target_sources and install(TARGETS) in order to associate a set of headers and their containing include directory with a target. Installing the target installs the headers in the same layout, and provides the include directory to consumers. Signed-off-by: Elvis Dowson <elvis.dowson@gmail.com>
This commit is contained in:
Elvis Dowson
parent
b0af6d5cd2
commit
b59550f67e
@ -8,20 +8,24 @@ set(CMAKE_CXX_STANDARD 20)
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set(LIBRARY_TARGET_NAME ${PROJECT_NAME})
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# define source and install directories
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set(${LIBRARY_TARGET_NAME}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
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set(${LIBRARY_TARGET_NAME}_BACKENDS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/backends")
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set(${LIBRARY_TARGET_NAME}_HEADER_FILES
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imgui.h
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imgui_internal.h
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imconfig.h
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imstb_rectpack.h
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imstb_truetype.h
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui.h
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui_internal.h
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imconfig.h
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imstb_rectpack.h
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imstb_truetype.h
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)
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set(${LIBRARY_TARGET_NAME}_SOURCE_FILES
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imgui.cpp
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imgui_demo.cpp
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imgui_draw.cpp
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imgui_tables.cpp
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imgui_widgets.cpp
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui.cpp
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui_demo.cpp
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui_draw.cpp
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui_tables.cpp
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${${LIBRARY_TARGET_NAME}_SOURCE_DIR}/imgui_widgets.cpp
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)
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# set options for backends
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@ -31,68 +35,68 @@ option(IMGUI_BACKEND_OPENGL3 "Use OpenGL3 backend" OFF)
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option(IMGUI_BACKEND_VULKAN "Use Vulkan backend" ON)
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set(${LIBRARY_TARGET_NAME}_BACKEND_GLFW_HEADER_FILES
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backends/imgui_impl_glfw.h
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_glfw.h
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_GLFW_SOURCE_FILES
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backends/imgui_impl_glfw.cpp
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_glfw.cpp
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_GLUT_HEADER_FILES
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backends/imgui_impl_glut.h
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_glut.h
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_GLUT_SOURCE_FILES
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backends/imgui_impl_glut.cpp
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_glut.cpp
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_HEADER_FILES
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backends/imgui_impl_opengl3.h
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_opengl3.h
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_SOURCE_FILES
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backends/imgui_impl_opengl3.cpp
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_opengl3.cpp
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_HEADER_FILES
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backends/imgui_impl_vulkan.h
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_vulkan.h
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)
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set(${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_SOURCE_FILES
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backends/imgui_impl_vulkan.cpp
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${${LIBRARY_TARGET_NAME}_BACKENDS_DIR}/imgui_impl_vulkan.cpp
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)
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# conditionally inlcude backends
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if(IMGUI_BACKEND_GLFW)
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find_package(glfw3 CONFIG REQUIRED)
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list(APPEND ${LIBRARY_TARGET_NAME}_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLFW_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLFW_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLFW_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLFW_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_LINK_LIBRARIES glfw)
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endif()
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if(IMGUI_BACKEND_GLUT)
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list(APPEND ${LIBRARY_TARGET_NAME}_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLUT_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLUT_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLUT_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_GLUT_SOURCE_FILES})
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endif()
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if(IMGUI_BACKEND_OPENGL3)
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list(APPEND ${LIBRARY_TARGET_NAME}_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_OPENGL3_SOURCE_FILES})
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endif()
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if(IMGUI_BACKEND_VULKAN)
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find_package(Vulkan REQUIRED)
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list(APPEND ${LIBRARY_TARGET_NAME}_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_HEADER_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_HEADER_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_BACKEND_SOURCE_FILES ${${LIBRARY_TARGET_NAME}_BACKEND_VULKAN_SOURCE_FILES})
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list(APPEND ${LIBRARY_TARGET_NAME}_LINK_LIBRARIES Vulkan::Vulkan)
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endif()
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add_library(
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${LIBRARY_TARGET_NAME}
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${${LIBRARY_TARGET_NAME}_SOURCE_FILES}
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${${LIBRARY_TARGET_NAME}_HEADER_FILES})
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${${LIBRARY_TARGET_NAME}_BACKEND_SOURCE_FILES})
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add_library(
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${PROJECT_NAME}::${LIBRARY_TARGET_NAME}
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@ -112,6 +116,16 @@ else()
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set(CONDA_FOUND 0)
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endif()
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# use target_sources with PUBLIC FILE_SET HEADERS to manage headers.
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# the BASE_DIRS argument is crucial for preserving the directory structure relative to that base.
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# a BASE_DIR cannot be a sub-directory of an existing BASE_DIR.
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target_sources(${LIBRARY_TARGET_NAME} PUBLIC FILE_SET HEADERS
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BASE_DIRS
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"${${LIBRARY_TARGET_NAME}_SOURCE_DIR}"
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FILES
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"${${LIBRARY_TARGET_NAME}_HEADER_FILES}"
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"${${LIBRARY_TARGET_NAME}_BACKEND_HEADER_FILES}")
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# specify include directories for both compilation and installation process.
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target_include_directories(${LIBRARY_TARGET_NAME}
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PUBLIC
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@ -139,15 +153,16 @@ include(GNUInstallDirs)
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# specify installation targets, typology and destination folders.
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install(TARGETS ${LIBRARY_TARGET_NAME}
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EXPORT ${LIBRARY_TARGET_NAME} # associates this target with an export name
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LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT shlib
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ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT lib
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RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT bin
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PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBRARY_TARGET_NAME}" COMPONENT dev)
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LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT shlib
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ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT lib
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RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT bin
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PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBRARY_TARGET_NAME}" COMPONENT dev
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FILE_SET HEADERS DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBRARY_TARGET_NAME}" COMPONENT dev)
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# specify export configuration to make the library discoverable by other cmake project using find_package()
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install(EXPORT ${LIBRARY_TARGET_NAME}
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
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NAMESPACE ${PROJECT_NAME}::
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
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NAMESPACE ${PROJECT_NAME}::
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)
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message(STATUS "Created target ${LIBRARY_TARGET_NAME} for ${PROJECT_NAME}.")
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