cmake denpendency build

CMakeLists.txt

# .
# bin
# source
#     dependency
#         include
#         source
#     example
#         include
#         source
#         external


# project level
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/bin)  # dll / exe
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)  # dll
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)  # lib

set(CMAKE_DEBUG_POSTFIX _d)

# custom install path
set(CMAKE_INSTALL_PREFIX ${PROJECT_SOURCE_DIR}/install)

# function to install lib
function(install_lib lib_name public_headers)
  math(EXPR lastIndex "${ARGC} - 1")
  if (${ARGC} GREATER 2)
      foreach(index RANGE 2 ${lastIndex})
          set(public_headers "${public_headers};${ARGV${index}}")  # append all headers into public_headers
      endforeach()
  endif()
  set_target_properties(${lib_name} PROPERTIES PUBLIC_HEADER "${public_headers}")  # quotations are required here
  install(TARGETS ${lib_name}
          ARCHIVE DESTINATION lib  # relative path to CMAKE_INSTALL_PREFIX
          LIBRARY DESTINATION lib
          RUNTIME DESTINATION bin
          PUBLIC_HEADER DESTINATION include)
endfunction()

# Dependency
set(DEPENDENCY_LIBRARY_OUTPUR_NAME Dependency)
set(DEPENDENCY_SOURCE_DIR ${PROJECT_SOURCE_DIR}/source/Dependency/source)
add_library(${DEPENDENCY_LIBRARY_OUTPUR_NAME} SHARED ${DEPENDENCY_SOURCE_DIR}/dependency.cpp)
target_include_directories(${DEPENDENCY_LIBRARY_OUTPUR_NAME} PRIVATE ${DEPENDENCY_INCLUDE_DIR})
install_lib(${DEPENDENCY_LIBRARY_OUTPUR_NAME} ${DEPENDENCY_INCLUDE_DIR}/dependency.hpp)

# Example
set(EXAMPLE_LIBRARY_OUTPUT_NAME ExampleLib)
set(EXAMPLE_SOURCE_DIR ${PROJECT_SOURCE_DIR}/source/example/source)
set(EXAMPLE_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/source/example/include)
set(EXAMPLE_EXTERNAL_DIR ${PROJECT_SOURCE_DIR}/source/example/external)
set(EXAMPLE_LIB_FILES
  ${EXAMPLE_SOURCE_DIR}/example.cpp
)
add_library(${EXAMPLE_LIBRARY_OUTPUT_NAME} SHARED ${EXAMPLE_LIB_FILES})
target_include_directories(${EXAMPLE_LIBRARY_OUTPUT_NAME}
  PRIVATE ${EXAMPLE_INCLUDE_DIR}
  PRIVATE ${EXAMPLE_EXTERNAL_DIR}
)
target_link_libraries(${EXAMPLE_LIBRARY_OUTPUT_NAME} 
  debug ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/Debug/Dependency_d.lib optimized ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/Release/Dependency.lib
)
set(EXAMPLE_PUBLIC_HEADERS
  ${EXAMPLE_EXTERNAL_DIR}/example.hpp
)
install_lib(${EXAMPLE_LIBRARY_OUTPUT_NAME} ${EXAMPLE_PUBLIC_HEADERS})
# ensure to build dependency first
add_dependencies(${EXAMPLE_LIBRARY_OUTPUT_NAME} ${DEPENDENCY_LIBRARY_OUTPUR_NAME})