numam-dpdk/drivers/net/mlx4/meson.build
Thomas Monjalon af331158f2 net/mlx: workaround static linkage with meson
If ibverbs_link is static and the application choose to link DPDK
as static libraries, both PMD and ibverbs libraries must be linked
as static libraries. And the dependencies of ibverbs (netlink) must
still be linked as shared libraries.

Unfortunately, meson forget about the static requirement for ibverbs
when generating the .pc file.
As a result, libibverbs, libmlx4, libmlx5 are listed in Requires.private
section (allowing to be linked as shared libraries) and libnl is missing.

A fix is in progress for meson, but anyway we will have to live without
such a fix until a better version of meson is widely available:
	https://github.com/mesonbuild/meson/pull/6393

In order to avoid meson suggesting shared libraries in the section
Requires.private of the .pc file, the dependency object is recreated
with declare_dependency():
	- cflags are extracted the libibverbs.pc
	- ldflags, from libibverbs.pc, are processed to force
	static flavor of ibverbs libraries, thanks to this syntax:
			-l:libfoo.a

Fixes: 6affeabaf321 ("net/mlx: add static ibverbs linkage with meson")

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2020-02-14 12:42:13 +01:00

137 lines
3.6 KiB
Meson

# SPDX-License-Identifier: BSD-3-Clause
# Copyright 2018 6WIND S.A.
# Copyright 2018 Mellanox Technologies, Ltd
if not is_linux
build = false
reason = 'only supported on Linux'
subdir_done()
endif
static_ibverbs = (get_option('ibverbs_link') == 'static')
pmd_dlopen = (get_option('ibverbs_link') == 'dlopen')
LIB_GLUE_BASE = 'librte_pmd_mlx4_glue.so'
LIB_GLUE_VERSION = '18.02.0'
LIB_GLUE = LIB_GLUE_BASE + '.' + LIB_GLUE_VERSION
if pmd_dlopen
dpdk_conf.set('RTE_IBVERBS_LINK_DLOPEN', 1)
cflags += [
'-DMLX4_GLUE="@0@"'.format(LIB_GLUE),
'-DMLX4_GLUE_VERSION="@0@"'.format(LIB_GLUE_VERSION),
]
endif
libnames = [ 'mlx4', 'ibverbs' ]
libs = []
foreach libname:libnames
lib = dependency('lib' + libname, static:static_ibverbs, required:false)
if not lib.found() and not static_ibverbs
lib = cc.find_library(libname, required:false)
endif
if lib.found()
libs += lib
if not static_ibverbs
ext_deps += lib
endif
else
build = false
reason = 'missing dependency, "' + libname + '"'
subdir_done()
endif
endforeach
if static_ibverbs
# Build without adding shared libs to Requires.private
ibv_cflags = run_command(pkgconf, '--cflags', 'libibverbs').stdout()
ext_deps += declare_dependency(compile_args: ibv_cflags.split())
# Add static deps ldflags to internal apps and Libs.private
ibv_ldflags = run_command(ldflags_ibverbs_static, check:true).stdout()
ext_deps += declare_dependency(link_args:ibv_ldflags.split())
endif
allow_experimental_apis = true
sources = files(
'mlx4.c',
'mlx4_ethdev.c',
'mlx4_flow.c',
'mlx4_intr.c',
'mlx4_mp.c',
'mlx4_mr.c',
'mlx4_rxq.c',
'mlx4_rxtx.c',
'mlx4_txq.c',
'mlx4_utils.c',
)
if not pmd_dlopen
sources += files('mlx4_glue.c')
endif
cflags_options = [
'-std=c11',
'-Wno-strict-prototypes',
'-D_BSD_SOURCE',
'-D_DEFAULT_SOURCE',
'-D_XOPEN_SOURCE=600'
]
foreach option:cflags_options
if cc.has_argument(option)
cflags += option
endif
endforeach
if get_option('buildtype').contains('debug')
cflags += [ '-pedantic', '-DPEDANTIC' ]
else
cflags += [ '-UPEDANTIC' ]
endif
# To maintain the compatibility with the make build system
# mlx4_autoconf.h file is still generated.
# input array for meson member search:
# [ "MACRO to define if found", "header for the search",
# "symbol to search", "struct member to search" ]
#
has_member_args = [
[ 'HAVE_IBV_MLX4_WQE_LSO_SEG', 'infiniband/mlx4dv.h',
'struct mlx4_wqe_lso_seg', 'mss_hdr_size' ],
]
# input array for meson symbol search:
# [ "MACRO to define if found", "header for the search",
# "symbol to search" ]
has_sym_args = [
[ 'HAVE_IBV_MLX4_BUF_ALLOCATORS', 'infiniband/mlx4dv.h',
'MLX4DV_SET_CTX_ATTR_BUF_ALLOCATORS' ],
[ 'HAVE_IBV_MLX4_UAR_MMAP_OFFSET', 'infiniband/mlx4dv.h',
'MLX4DV_QP_MASK_UAR_MMAP_OFFSET' ],
]
config = configuration_data()
foreach arg:has_sym_args
config.set(arg[0], cc.has_header_symbol(arg[1], arg[2],
dependencies: libs))
endforeach
foreach arg:has_member_args
file_prefix = '#include <' + arg[1] + '>'
config.set(arg[0], cc.has_member(arg[2], arg[3],
prefix: file_prefix, dependencies: libs))
endforeach
configure_file(output : 'mlx4_autoconf.h', configuration : config)
# Build Glue Library
if pmd_dlopen
dlopen_name = 'mlx4_glue'
dlopen_lib_name = driver_name_fmt.format(dlopen_name)
dlopen_so_version = LIB_GLUE_VERSION
dlopen_sources = files('mlx4_glue.c')
dlopen_install_dir = [ eal_pmd_path + '-glue' ]
shared_lib = shared_library(
dlopen_lib_name,
dlopen_sources,
include_directories: global_inc,
c_args: cflags,
dependencies: libs,
link_args: [
'-Wl,-export-dynamic',
'-Wl,-h,@0@'.format(LIB_GLUE),
],
soversion: dlopen_so_version,
install: true,
install_dir: dlopen_install_dir,
)
endif