ceph/cmake/modules/BuildDPDK.cmake
Kefu Chai 1a6877dc04 cmake/modules/BuildDPDK.cmake: link whole-archive
we build dpdk as static library, linking against them without specifying
--whole-archive will get the constructor symbols droppped by the linker
as they are not referenced directly by the excecutable. so we need to do
so to make sure we call all the constructors.

Signed-off-by: Kefu Chai <kchai@redhat.com>
2018-09-05 15:40:30 +08:00

138 lines
4.7 KiB
CMake

function(do_build_dpdk dpdk_dir)
# mk/machine/native/rte.vars.mk
# rte_cflags are extracted from mk/machine/${machine}/rte.vars.mk
# only 3 of them have -march=<arch> defined, so copying them here.
# we need to pass the -march=<arch> to ${cc} as some headers in dpdk
# require it to compile. for instance, dpdk/include/rte_memcpy.h.
if(CMAKE_SYSTEM_PROCESSOR MATCHES "i386")
set(arch "x86_64")
set(machine "default")
set(machine_tmpl "native")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686")
set(arch "i686")
set(machine "default")
set(machine_tmpl "native")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64|AMD64")
set(arch "x86_64")
set(machine "default")
set(machine_tmpl "native")
set(rte_cflags "-march=core2")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm|ARM")
set(arch "arm")
set(machine "armv7a")
set(machine_tmpl "armv7a")
set(rte_cflags "-march=armv7-a")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
set(arch "arm64")
set(machine "armv8a")
set(machine_tmpl "armv8a")
set(rte_cflags "-march=armv8-a+crc")
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(powerpc|ppc)64")
set(arch "ppc_64")
set(machine "power8")
set(machine_tmpl "power8")
else()
message(FATAL_ERROR "not able to build DPDK support: "
"unknown arch \"${CMAKE_SYSTEM_PROCESSOR}\"")
endif()
set(dpdk_rte_CFLAGS "${rte_cflags}" CACHE INTERNAL "")
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
set(execenv "linuxapp")
elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
set(execenv "bsdapp")
else()
message(FATAL_ERROR "not able to build DPDK support: "
"unsupported OS \"${CMAKE_SYSTEM_NAME}\"")
endif()
if(CMAKE_C_COMPILER_ID STREQUAL GNU)
set(toolchain "gcc")
elseif(CMAKE_C_COMPILER_ID STREQUAL Clang)
set(toolchain "clang")
elseif(CMAKE_C_COMPILER_ID STREQUAL Intel)
set(toolchain "icc")
else()
message(FATAL_ERROR "not able to build DPDK support: "
"unknown compiler \"${CMAKE_C_COMPILER_ID}\"")
endif()
set(target "${arch}-${machine_tmpl}-${execenv}-${toolchain}")
execute_process(
COMMAND ${CMAKE_MAKE_PROGRAM} showconfigs
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src/spdk/dpdk
OUTPUT_VARIABLE supported_targets
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" ";" supported_targets "${supported_targets}")
list(FIND supported_targets ${target} found)
if(found EQUAL -1)
message(FATAL_ERROR "not able to build DPDK support: "
"unsupported target. "
"\"${target}\" not listed in ${supported_targets}")
endif()
include(ExternalProject)
ExternalProject_Add(dpdk-ext
SOURCE_DIR ${CMAKE_SOURCE_DIR}/src/spdk/dpdk
CONFIGURE_COMMAND $(MAKE) config O=${dpdk_dir} T=${target}
BUILD_COMMAND env CC=${CMAKE_C_COMPILER} $(MAKE) O=${dpdk_dir} EXTRA_CFLAGS=-fPIC
BUILD_IN_SOURCE 1
INSTALL_COMMAND "true")
ExternalProject_Add_Step(dpdk-ext patch-config
COMMAND ${CMAKE_MODULE_PATH}/patch-dpdk-conf.sh ${dpdk_dir} ${machine} ${arch}
DEPENDEES configure
DEPENDERS build)
# easier to adjust the config
ExternalProject_Add_StepTargets(dpdk-ext configure patch-config build)
endfunction()
macro(build_dpdk)
set(DPDK_DIR ${CMAKE_BINARY_DIR}/src/dpdk)
do_build_dpdk(${DPDK_DIR})
set(DPDK_INCLUDE_DIR ${DPDK_DIR}/include)
# create the directory so cmake won't complain when looking at the imported
# target
file(MAKE_DIRECTORY ${DPDK_INCLUDE_DIR})
if(NOT TARGET dpdk::cflags)
add_library(dpdk::cflags INTERFACE IMPORTED)
if (dpdk_rte_CFLAGS)
set_target_properties(dpdk::cflags PROPERTIES
INTERFACE_COMPILE_OPTIONS "${dpdk_rte_CFLAGS}")
endif()
endif()
foreach(c
bus_pci
eal
mempool
mempool_ring
mempool_stack
pci
ring)
add_library(dpdk::${c} STATIC IMPORTED)
add_dependencies(dpdk::${c} dpdk-ext)
set(dpdk_${c}_LIBRARY
"${DPDK_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}rte_${c}${CMAKE_STATIC_LIBRARY_SUFFIX}")
set_target_properties(dpdk::${c} PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${DPDK_INCLUDE_DIR}
INTERFACE_LINK_LIBRARIES dpdk::cflags
IMPORTED_LOCATION "${dpdk_${c}_LIBRARY}")
list(APPEND DPDK_LIBRARIES dpdk::${c})
list(APPEND DPDK_ARCHIVES "${dpdk_${c}_LIBRARY}")
endforeach()
add_library(dpdk::dpdk INTERFACE IMPORTED)
add_dependencies(dpdk::dpdk
${DPDK_LIBRARIES})
# workaround for https://gitlab.kitware.com/cmake/cmake/issues/16947
set_target_properties(dpdk::dpdk PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${DPDK_INCLUDE_DIR}
INTERFACE_LINK_LIBRARIES
"-Wl,--whole-archive $<JOIN:${DPDK_ARCHIVES}, > -Wl,--no-whole-archive")
if(dpdk_rte_CFLAGS)
set_target_properties(dpdk::dpdk PROPERTIES
INTERFACE_COMPILE_OPTIONS "${dpdk_rte_CFLAGS}")
endif()
endmacro()