264 lines
10 KiB
CMake
264 lines
10 KiB
CMake
cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
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# metadata
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set(META_PROJECT_NAME syncthing)
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set(META_PROJECT_TYPE library)
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set(META_APP_NAME "Syncthing library")
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set(META_APP_DESCRIPTION "Syncthing itself, built as a shared or static library")
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set(META_PROJECT_VARNAME_UPPER LIB_SYNCTHING)
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set(META_SYNCTHING_VERSION "v1.27.4")
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# use testfiles directory from syncthingconnector
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set(META_SRCDIR_REFS "${CMAKE_CURRENT_SOURCE_DIR}\n${CMAKE_CURRENT_SOURCE_DIR}/../syncthingconnector")
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# add project files
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set(HEADER_FILES interface.h)
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set(SRC_FILES "${CMAKE_CURRENT_BINARY_DIR}/libsyncthinginternal.h" interface.cpp)
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set(TEST_HEADER_FILES)
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set(TEST_SRC_FILES tests/interfacetests.cpp)
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# find the go binary
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find_program(GO_BIN go)
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if (NOT GO_BIN)
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message(FATAL_ERROR "The go binary could not be located.")
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endif ()
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# define paths where the library and header generated by cgo are supposed to go
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set(SYNCTHINGINTERNAL_LIBRARY_PATH "${CMAKE_CURRENT_BINARY_DIR}/libsyncthinginternal.a")
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set(SYNCTHINGINTERNAL_HEADER_PATH "${CMAKE_CURRENT_BINARY_DIR}/libsyncthinginternal.h")
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# define environment/args to use tools configured within CMake also with cgo
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set(GO_COMPILER_ARGS "CC='${CMAKE_C_COMPILER}'" "CXX='${CMAKE_CXX_COMPILER}'" "AR='${CMAKE_C_COMPILER_AR}'")
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if (CMAKE_RANLIB)
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set(GO_RANLIB_ARGS "&&" "${CMAKE_RANLIB}" "${SYNCTHINGINTERNAL_LIBRARY_PATH}")
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endif ()
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# determine GOARCH for target
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set(GO_TARGET_ARCH_OVERRIDE
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""
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CACHE STRING "overrides the 'GOARCH' variable")
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if (GO_TARGET_ARCH_OVERRIDE)
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set(GO_TARGET_ARCH "${GO_TARGET_ARCH_OVERRIDE}")
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elseif (NOT CMAKE_CROSSCOMPILING)
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set(GO_TARGET_ARCH "")
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elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
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set(GO_TARGET_ARCH "amd64")
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elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "i[3-6]86")
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set(GO_TARGET_ARCH "386")
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elseif (CMAKE_SYSTEM_NAME MATCHES "(ppc64|ppc64le|arm|arm64|s390x)")
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set(GO_TARGET_ARCH "${CMAKE_SYSTEM_NAME}")
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else ()
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message(FATAL_ERROR "Unable to auto-determine GOARCH. Please set GO_TARGET_ARCH_OVERRIDE manually.")
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endif ()
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# determine GOOS for target
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set(GO_TARGET_OS_OVERRIDE
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""
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CACHE STRING "overrides the 'GOOS' variable")
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if (GO_TARGET_OS_OVERRIDE)
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set(GO_TARGET_OS "${GO_TARGET_OS_OVERRIDE}")
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elseif (NOT CMAKE_CROSSCOMPILING)
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set(GO_TARGET_OS "")
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elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
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set(GO_TARGET_OS "linux")
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elseif (CMAKE_SYSTEM_NAME STREQUAL "Android")
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set(GO_TARGET_OS "android")
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elseif (CMAKE_SYSTEM_NAME STREQUAL "Windows")
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set(GO_TARGET_OS "windows")
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elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
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set(GO_TARGET_OS "freebsd")
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elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
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set(GO_TARGET_OS "darwin")
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else ()
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message(FATAL_ERROR "Unable to auto-determine GOOS. Please set GO_TARGET_OS_OVERRIDE manually.")
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endif ()
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message(STATUS "Using GOOS=${GO_TARGET_OS} and GOARCH=${GO_TARGET_ARCH}")
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# define default GOFLAGS
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string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_UPPER)
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set(GO_FLAGS_OVERRIDE
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""
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CACHE STRING "overrides the 'GOFLAGS' variable")
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if (GO_FLAGS_OVERRIDE)
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set(GO_FLAGS "${GO_FLAGS_OVERRIDE}")
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else ()
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set(GO_FLAGS "-trimpath -mod=readonly -modcacherw")
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endif ()
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foreach (LANGUAGE C CXX)
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set(CGO_${LANGUAGE}FLAGS_OVERRIDE
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""
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CACHE STRING "overrides the 'CGO_${LANGUAGE}FLAGS' variable")
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if (CGO_${LANGUAGE}FLAGS_OVERRIDE)
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set(CGO_${LANGUAGE}FLAGS "${CGO_${LANGUAGE}FLAGS_OVERRIDE}")
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else ()
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set(CGO_${LANGUAGE}FLAGS "${CMAKE_${LANGUAGE}_FLAGS_INIT} ${CMAKE_${LANGUAGE}_FLAGS_${CMAKE_BUILD_TYPE_UPPER}_INIT}")
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endif ()
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endforeach ()
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set(CGO_LDFLAGS_OVERRIDE
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""
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CACHE STRING "overrides the 'CGO_LDFLAGS' variable")
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if (CGO_LDFLAGS_OVERRIDE)
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set(CGO_LDFLAGS "${CGO_CFLAGS_OVERRIDE}")
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else ()
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set(CGO_LDFLAGS "${CMAKE_SHARED_LINKER_FLAGS_INIT} ${CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UPPER}_INIT}")
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endif ()
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# enforce defaults for cgo build when using MSVC as cgo doesn't seem to support it
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if (MSVC)
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unset(GO_COMPILER_ARGS)
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unset(GO_RANLIB_ARGS)
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unset(CGO_CFLAGS)
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unset(CGO_CXXFLAGS)
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unset(CGO_LDFLAGS)
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endif ()
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# locate the Syncthing checkout
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set(GO_DEVELOPMENT_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/go"
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CACHE PATH "the 'GOPATH'")
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set(SYNCTHING_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/go/src/github.com/syncthing/syncthing"
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CACHE PATH "path of Syncthing checkout")
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# find Syncthing's assets (caveat: newly added assets will not cause CMake to automatically regenerate)
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file(
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GLOB_RECURSE SRC_FILES_SYNCTHING_ASSETS
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LIST_DIRECTORIES false
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RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
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"${SYNCTHING_PATH}/gui/*")
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if (NOT SRC_FILES_SYNCTHING_ASSETS)
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message(FATAL_ERROR "No asset files found in Syncthing checkout \"${SYNCTHING_PATH}\".")
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endif ()
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# find Syncthing's source code (caveat: newly added files will not cause CMake to automatically regenerate)
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file(
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GLOB_RECURSE SRC_FILES_SYNCTHING
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LIST_DIRECTORIES false
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RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
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"${SYNCTHING_PATH}/c-bindings/*.go"
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"${SYNCTHING_PATH}/c-bindings/*.h"
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"${SYNCTHING_PATH}/c-bindings/*.c"
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"${SYNCTHING_PATH}/cmd/syncthing/*.go"
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"${SYNCTHING_PATH}/lib/*.go"
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"${SYNCTHING_PATH}/lib/*.h"
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"${SYNCTHING_PATH}/lib/*.c")
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if (NOT SRC_FILES_SYNCTHING)
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message(FATAL_ERROR "No *.go files found in Syncthing checkout \"${SYNCTHING_PATH}\".")
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endif ()
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set(GENERATED_SYNCTHING_GUI_FILES_RELATIVE_PATH "lib/api/auto/gui.files.go")
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list(APPEND SRC_FILES_SYNCTHING "${SYNCTHING_PATH}/${GENERATED_SYNCTHING_GUI_FILES_RELATIVE_PATH}")
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message(STATUS "Syncthing's source files: ${SRC_FILES_SYNCTHING}")
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# set Go linker flags
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set(GO_LINKER_FLAGS_OVERRIDE
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""
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CACHE STRING "overrides flags passed to Go's build system via -ldflags")
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS_OVERRIDE}")
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if (CMAKE_BUILD_TYPE STREQUAL Release OR CMAKE_BUILD_TYPE STREQUAL MinSizeRel)
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS} -w")
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endif ()
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if (META_SYNCTHING_VERSION)
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS} -X github.com/syncthing/syncthing/lib/build.Version=${META_SYNCTHING_VERSION}")
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endif ()
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if (DEFINED $ENV{USER})
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS} -X github.com/syncthing/syncthing/lib/build.User=$ENV{USER}")
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endif ()
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if (DEFINED $ENV{BUILD_HOST})
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set(BUILD_HOST $ENV{BUILD_HOST})
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else ()
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cmake_host_system_information(RESULT BUILD_HOST QUERY HOSTNAME)
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endif ()
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if (BUILD_HOST)
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS} -X github.com/syncthing/syncthing/lib/build.Host=${BUILD_HOST}")
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endif ()
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if (DEFINED $ENV{BUILD_STAMP})
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set(BUILD_STAMP "$ENV{BUILD_STAMP}")
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else ()
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string(TIMESTAMP BUILD_STAMP "%s" UTC)
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endif ()
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set(GO_LINKER_FLAGS "${GO_LINKER_FLAGS} -X github.com/syncthing/syncthing/lib/build.Stamp=${BUILD_STAMP}")
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# generate Syncthing's assets (not setting GOARCH/GOOS here, this is supposed to run on the host)
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add_custom_command(
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OUTPUT "${SYNCTHING_PATH}/${GENERATED_SYNCTHING_GUI_FILES_RELATIVE_PATH}"
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COMMAND "${CMAKE_COMMAND}" -E env "GO111MODULE=on" "GOPATH=${GO_DEVELOPMENT_PATH}" "GOFLAGS=${GO_FLAGS}" "${GO_BIN}" run
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./script/genassets.go gui > "${GENERATED_SYNCTHING_GUI_FILES_RELATIVE_PATH}"
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DEPENDS ${SRC_FILES_SYNCTHING_ASSETS}
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WORKING_DIRECTORY "${SYNCTHING_PATH}"
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COMMENT "Building Syncthing's assets")
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# compile Syncthing as static library
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add_custom_command(
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OUTPUT "${SYNCTHINGINTERNAL_LIBRARY_PATH}" "${SYNCTHINGINTERNAL_HEADER_PATH}"
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COMMAND
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"${CMAKE_COMMAND}" -E env ${GO_COMPILER_ARGS} "GOOS=${GO_TARGET_OS}" "CGO_CFLAGS=${CGO_CFLAGS}"
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"CGO_CXXFLAGS=${CGO_CXXFLAGS}" "CGO_LDFLAGS=${CGO_LDFLAGS}" "GOARCH=${GO_TARGET_ARCH}" "CGO_ENABLED=1"
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"GO111MODULE=on" "GOPATH=${GO_DEVELOPMENT_PATH}" "GOFLAGS=${GO_FLAGS}" "${GO_BIN}" build -v -buildmode c-archive -o
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"${SYNCTHINGINTERNAL_LIBRARY_PATH}" -ldflags "${GO_LINKER_FLAGS}" ./c-bindings ${GO_RANLIB_ARGS}
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DEPENDS ${SRC_FILES_SYNCTHING}
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WORKING_DIRECTORY "${SYNCTHING_PATH}"
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COMMENT "Building Syncthing itself (as library)")
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# find c++utilities to use CMake modules and headers from it privately
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find_package(${PACKAGE_NAMESPACE_PREFIX}c++utilities${CONFIGURATION_PACKAGE_SUFFIX} 5.0.0 REQUIRED)
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list(APPEND CMAKE_MODULE_PATH ${CPP_UTILITIES_MODULE_DIRS})
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if (CPP_UTILITIES_SOURCE_DIR)
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list(APPEND PRIVATE_INCLUDE_DIRS $<BUILD_INTERFACE:${CPP_UTILITIES_SOURCE_DIR}/..>
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$<INSTALL_INTERFACE:${CPP_UTILITIES_INCLUDE_DIRS}>)
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else ()
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list(APPEND PRIVATE_INCLUDE_DIRS ${CPP_UTILITIES_INCLUDE_DIRS})
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endif ()
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# apply basic config
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include(BasicConfig)
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# add imported target for library generated by the Go build system
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add_library(syncthinginternal STATIC IMPORTED)
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set_property(TARGET syncthinginternal PROPERTY IMPORTED_LOCATION "${SYNCTHINGINTERNAL_LIBRARY_PATH}")
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set_property(TARGET syncthinginternal PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${SYNCTHING_PATH}/c-bindings")
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# add additional libraries (not sure if go build could provide this list somehow to make this more generic)
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if (WIN32)
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set(SYNCTHING_INTERNAL_LIBS ws2_32 winmm)
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elseif (UNIX)
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set_property(
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TARGET syncthinginternal
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APPEND
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PROPERTY INTERFACE_LINK_OPTIONS "-pthread")
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endif ()
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foreach (LIBRARY ${SYNCTHING_INTERNAL_LIBS})
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find_library(SYNCTHING_INTERNAL_LIBRARY_PATH_${LIBRARY} ${LIBRARY})
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set_property(
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TARGET syncthinginternal
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APPEND
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PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES ${SYNCTHING_INTERNAL_LIBRARY_PATH_${LIBRARY}})
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endforeach ()
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# depend on that imported target
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list(APPEND PRIVATE_LIBRARIES $<BUILD_INTERFACE:syncthinginternal>
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$<INSTALL_INTERFACE:${LIB_INSTALL_DESTINATION}/libsyncthinginternal.a>)
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# include modules to apply configuration
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include(WindowsResources)
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include(LibraryTarget)
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include(TestTarget)
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include(Doxygen)
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include(ConfigHeader)
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# create install target for static libsyncthinginternal.a if we're also creating a static libsyncthing.a (note: It is not
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# possible to add syncthinginternal to BUNDLED_TARGETS because it is an import library which apparently can not be exported.)
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if (NOT BUILD_SHARED_LIBS
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AND NOT META_NO_INSTALL_TARGETS
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AND ENABLE_INSTALL_TARGETS)
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install(
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FILES "${SYNCTHINGINTERNAL_LIBRARY_PATH}"
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DESTINATION "${CMAKE_INSTALL_LIBDIR}${SELECTED_LIB_SUFFIX}"
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COMPONENT binary)
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endif ()
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# avoid running this test in parallel with other tests spawning a Syncthing test instance
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if (META_MAIN_TEST_NAME)
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set_tests_properties("${META_MAIN_TEST_NAME}" PROPERTIES RESOURCE_LOCK "syncthingtestinstance")
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endif ()
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