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cmake/modules/BuildDPDK.cmake: link whole-archive

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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>
This commit is contained in:
Kefu Chai 2018-08-29 15:38:25 +08:00
parent d080e216e0
commit 1a6877dc04
1 changed files with 22 additions and 9 deletions
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31
cmake/modules/BuildDPDK.cmake
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@ -35,14 +35,7 @@ function(do_build_dpdk dpdk_dir)
message(FATAL_ERROR "not able to build DPDK support: "
"unknown arch \"${CMAKE_SYSTEM_PROCESSOR}\"")
endif()
if(NOT TARGET dpdk::cflags)
add_library(dpdk::cflags INTERFACE IMPORTED)
if (rte_cflags)
set_target_properties(dpdk::cflags PROPERTIES
INTERFACE_COMPILE_OPTIONS "${rte_cflags}")
endif()
endif()
set(dpdk_rte_CFLAGS "${rte_cflags}" CACHE INTERNAL "")
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
set(execenv "linuxapp")
elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
@ -100,6 +93,15 @@ macro(build_dpdk)
# 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
@ -117,8 +119,19 @@ macro(build_dpdk)
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
${DPDK_LIBRARIES})
# workaround for https://gitlab.kitware.com/cmake/cmake/issues/16947
set_target_properties(dpdk::dpdk PROPERTIES
INTERFACE_LINK_LIBRARIES "${DPDK_LIBRARIES}")
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()