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Export and install CMake targets

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The steps to add this functionality are from the cmake tutorial:
https://cmake.org/cmake/help/latest/guide/tutorial/index.html

The include directories being set on the targets is necessary
for dependent targets. There is some redundancy with the
INCLUDE_DIRECTORIES calls alreday present, but I left it alone
to make the PR smaller and more approachable.

The project currently uses mixed cases in functions. This uses
lowercase on calls I touched, as this is what CMake documentation
uses and seems to be the preferred way.

I also started wrapping long lines, as some of the lines I touched
were over 170 characters.

I tested this on both Mac OS 10.15 Catalina and CentOS 7 (with
devtoolset-7) with CMake 3.10.3.
Will work on tests in CI next.
This commit is contained in:
Levi Morrison 2021-04-09 23:39:02 -06:00
parent 9c0fdd12c3
commit 9fd8df92ca
3 changed files with 49 additions and 5 deletions
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1
build-cmake/.gitignore vendored
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@ -1,3 +1,4 @@
*
!.gitignore
!CMakeLists.txt
!Config.cmake.in

51
build-cmake/CMakeLists.txt
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@ -20,6 +20,9 @@ endif()
INCLUDE(TestBigEndian)
TEST_BIG_ENDIAN(WORDS_BIGENDIAN)
include(GNUInstallDirs)
set(PROTOBUF_C_TARGETS "protobuf-c")
SET(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
ADD_DEFINITIONS(-DPACKAGE_VERSION="${PACKAGE_VERSION}")
ADD_DEFINITIONS(-DPACKAGE_STRING="${PACKAGE_STRING}")
@ -48,6 +51,11 @@ SET (PC_SOURCES
ADD_LIBRARY(protobuf-c ${PC_SOURCES})
set_target_properties(protobuf-c PROPERTIES COMPILE_PDB_NAME protobuf-c)
target_include_directories(protobuf-c
PUBLIC
$<BUILD_INTERFACE:${MAIN_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
IF (MSVC AND BUILD_SHARED_LIBS)
TARGET_COMPILE_DEFINITIONS(protobuf-c PRIVATE -DPROTOBUF_C_EXPORT)
ENDIF (MSVC AND BUILD_SHARED_LIBS)
@ -96,8 +104,12 @@ ADD_CUSTOM_COMMAND(OUTPUT protobuf-c/protobuf-c.pb.cc protobuf-c/protobuf-c.pb.h
ARGS --cpp_out ${CMAKE_BINARY_DIR} -I${MAIN_DIR} ${MAIN_DIR}/protobuf-c/protobuf-c.proto)
FILE(GLOB PROTOC_GEN_C_SRC ${MAIN_DIR}/protoc-c/*.h ${MAIN_DIR}/protoc-c/*.cc )
ADD_EXECUTABLE(protoc-gen-c ${PROTOC_GEN_C_SRC} protobuf-c/protobuf-c.pb.cc protobuf-c/protobuf-c.pb.h)
TARGET_LINK_LIBRARIES(protoc-gen-c ${PROTOBUF_PROTOC_LIBRARY} ${PROTOBUF_LIBRARY})
target_include_directories(protoc-gen-c
PUBLIC
$<BUILD_INTERFACE:${MAIN_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
target_link_libraries(protoc-gen-c protobuf::libprotoc protobuf::libprotobuf)
IF (MSVC AND BUILD_SHARED_LIBS)
TARGET_COMPILE_DEFINITIONS(protoc-gen-c PRIVATE -DPROTOBUF_USE_DLLS)
@ -181,10 +193,16 @@ IF(CMAKE_HOST_UNIX)
ENDIF()
ENDIF()
INSTALL(TARGETS protoc-gen-c RUNTIME DESTINATION bin)
list(APPEND PROTOBUF_C_TARGETS "protoc-gen-c")
ENDIF() # BUILD_PROTOC
INSTALL(TARGETS protobuf-c LIBRARY DESTINATION lib ARCHIVE DESTINATION lib RUNTIME DESTINATION bin)
install(TARGETS ${PROTOBUF_C_TARGETS}
EXPORT protobuf-c-targets
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib
RUNTIME DESTINATION bin
)
INSTALL(FILES ${MAIN_DIR}/protobuf-c/protobuf-c.h ${MAIN_DIR}/protobuf-c/protobuf-c.proto DESTINATION include/protobuf-c)
INSTALL(FILES ${MAIN_DIR}/protobuf-c/protobuf-c.h DESTINATION include)
INSTALL(FILES ${CMAKE_BINARY_DIR}/protobuf-c.pdb DESTINATION lib OPTIONAL)
@ -193,7 +211,6 @@ IF(CMAKE_HOST_UNIX)
INSTALL(CODE "EXECUTE_PROCESS (COMMAND ln -sf protoc-gen-c protoc-c WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX}/bin)")
ENDIF()
INCLUDE(GNUInstallDirs)
SET(prefix ${CMAKE_INSTALL_PREFIX})
SET(exec_prefix \${prefix})
SET(bindir \${exec_prefix}/${CMAKE_INSTALL_BINDIR})
@ -202,6 +219,30 @@ SET(includedir \${prefix}/${CMAKE_INSTALL_INCLUDEDIR})
CONFIGURE_FILE(${MAIN_DIR}/protobuf-c/libprotobuf-c.pc.in libprotobuf-c.pc @ONLY)
INSTALL(FILES ${CMAKE_BINARY_DIR}/libprotobuf-c.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
install(EXPORT protobuf-c-targets
NAMESPACE protobuf-c::
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/protobuf-c
)
include(CMakePackageConfigHelpers)
configure_package_config_file(${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in
"${CMAKE_CURRENT_BINARY_DIR}/protobuf-c-config.cmake"
INSTALL_DESTINATION "lib/cmake/protobuf-c"
)
write_basic_package_version_file(protobuf-c-config-version.cmake
VERSION ${PACKAGE_VERSION}
COMPATIBILITY SameMajorVersion
)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/protobuf-c-config.cmake ${CMAKE_CURRENT_BINARY_DIR}/protobuf-c-config-version.cmake
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/protobuf-c
)
export(EXPORT protobuf-c-targets
FILE "${CMAKE_CURRENT_BINARY_DIR}/protobuf-c-targets.cmake"
)
IF(BUILD_TESTS)
INCLUDE(Dart)

2
build-cmake/Config.cmake.in Normal file
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@ -0,0 +1,2 @@
@PACKAGE_INIT@
include("${CMAKE_CURRENT_LIST_DIR}/protobuf-c-targets.cmake")