Add the --as-needed linker flag to the DPDK library list in the pkg-config
file so as to prevent overlinking. Without this flag, when linking
statically using flags from $(pkg-config --static --libs libdpdk), all DPDK
drivers and libs were statically linked in, but the binary was also
requiring all the shared versions be present to run.
The real root-cause of this issue is that the DPDK libraries need to be
duplicated in the linker command when doing static linking, due to the
behaviour of pkg-config, but since that behaviour cannot be easily changed,
this is a simple workaround to avoid problems.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Acked-by: Sunil Pai G <sunil.pai.g@intel.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
# Another requirement is to allow linking dependencies as shared libraries,
# while linking static DPDK libraries and drivers. It is satisfied by
# listing the static files in Libs.private with the explicit syntax -l:libfoo.a.
# Another requirement is to allow linking dependencies as shared libraries,
# while linking static DPDK libraries and drivers. It is satisfied by
# listing the static files in Libs.private with the explicit syntax -l:libfoo.a.
+# As a consequence, the regular DPDK libraries are already listed as static
+# in the field Libs.private. The second occurences of DPDK libraries,
+# included from Requires and used for shared library linkage case,
+# are skipped in the case of static linkage thanks to the flag --as-needed.
+
pkg.generate(name: 'dpdk-libs',
filebase: 'libdpdk-libs',
pkg.generate(name: 'dpdk-libs',
filebase: 'libdpdk-libs',
version: meson.project_version(),
subdirs: [get_option('include_subdir_arch'), '.'],
extra_cflags: pkg_extra_cflags,
version: meson.project_version(),
subdirs: [get_option('include_subdir_arch'), '.'],
extra_cflags: pkg_extra_cflags,
- libraries: dpdk_libraries,
+ libraries: ['-Wl,--as-needed'] + dpdk_libraries,
libraries_private: dpdk_extra_ldflags)
pkg.generate(name: 'DPDK', # main DPDK pkgconfig file
libraries_private: dpdk_extra_ldflags)
pkg.generate(name: 'DPDK', # main DPDK pkgconfig file