mbuf: extend meaning of QinQ stripped bit

[dpdk.git] / buildtools / pkg-config / meson.build

diff --git a/buildtools/pkg-config/meson.build b/buildtools/pkg-config/meson.build
index f663b1c..5f19304 100644 (file)
--- a/buildtools/pkg-config/meson.build
+++ b/buildtools/pkg-config/meson.build
@@ -1,10 +1,6 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2020 Intel Corporation
 
-# for static builds, include the drivers as libs and we need to "whole-archive"
-# them.
-dpdk_drivers = ['-Wl,--whole-archive'] + dpdk_drivers + ['-Wl,--no-whole-archive']
-
 pkg = import('pkgconfig')
 pkg_extra_cflags = ['-include', 'rte_config.h'] + machine_args
 if is_freebsd
@@ -22,6 +18,14 @@ endif
 # and those need to come *before* the regular libraries (Libs field).
 # This requirement is satisfied by moving the regular libs in a separate file
 # included in the field Requires (after Libs.private).
+# 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',
@@ -30,7 +34,7 @@ Use libdpdk.pc instead of this file to query DPDK compile/link arguments''',
        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
@@ -41,6 +45,11 @@ Note that CFLAGS might contain an -march flag higher than typical baseline.
 This is required for a number of static inline functions in the public headers.''',
        requires: ['libdpdk-libs', libbsd], # may need libbsd for string funcs
                          # if libbsd is not enabled, then this is blank
-       libraries_private: dpdk_drivers + dpdk_static_libraries +
-                       ['-Wl,-Bdynamic']
+       libraries_private: ['-Wl,--whole-archive'] +
+                       dpdk_drivers + dpdk_static_libraries +
+                       ['-Wl,--no-whole-archive']
 )
+
+# For static linking with dependencies as shared libraries,
+# the internal static libraries must be flagged explicitly.
+run_command(py3, 'set-static-linker-flags.py', check: true)