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if(protobuf_VERBOSE)
message(STATUS "Protocol Buffers Examples Configuring...")
endif()
get_filename_component(examples_dir "${protobuf_SOURCE_DIR}/examples" ABSOLUTE)
if(protobuf_VERBOSE)
message(STATUS "Protocol Buffers Examples Configuring done")
endif()
include(ExternalProject)
# Internal utility function: Create a custom target representing a build of examples with custom options.
function(add_examples_build NAME)
ExternalProject_Add(${NAME}
PREFIX ${NAME}
SOURCE_DIR "${examples_dir}"
BINARY_DIR ${NAME}
STAMP_DIR ${NAME}/logs
INSTALL_COMMAND "" #Skip
LOG_CONFIGURE 1
CMAKE_CACHE_ARGS "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}"
"-Dprotobuf_VERBOSE:BOOL=${protobuf_VERBOSE}"
${ARGN}
)
set_property(TARGET ${NAME} PROPERTY FOLDER "Examples")
set_property(TARGET ${NAME} PROPERTY EXCLUDE_FROM_ALL TRUE)
endfunction()
# Add examples as an external project.
# sub_directory cannot be used because the find_package(protobuf) call would cause failures with redefined targets.
add_examples_build(examples "-Dprotobuf_DIR:PATH=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_CMAKEDIR}")
add_dependencies(examples ${protobuf_LIB_PROTOBUF} ${protobuf_PROTOC_EXE})
option(protobuf_BUILD_EXAMPLES_MULTITEST "Build Examples in multiple configurations. Useful for testing." OFF)
mark_as_advanced(protobuf_BUILD_EXAMPLES_MULTITEST)
if(protobuf_BUILD_EXAMPLES_MULTITEST)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
#Build using the legacy compatibility module.
add_examples_build(examples-legacy
"-Dprotobuf_DIR:PATH=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_CMAKEDIR}"
"-Dprotobuf_MODULE_COMPATIBLE:BOOL=TRUE"
)
add_dependencies(examples-legacy ${protobuf_LIB_PROTOBUF} ${protobuf_PROTOC_EXE})
#Build using the installed library.
add_examples_build(examples-installed
"-Dprotobuf_DIR:PATH=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_CMAKEDIR}"
)
#Build using the installed library in legacy compatibility mode.
add_examples_build(examples-installed-legacy
"-Dprotobuf_DIR:PATH=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_CMAKEDIR}"
"-Dprotobuf_MODULE_COMPATIBLE:BOOL=TRUE"
)
endif()
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