build: mention -march in pkg-config description

Applications need to at least match DPDK's -march option to build
successfully due to some static inline functions in the public headers.

This might cause problems, especially in distributions, so add a note
in the pkg-config description.

Fixes: a25a650be5f0 ("build: add infrastructure for meson and ninja builds")
Cc: stable@dpdk.org
Signed-off-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/meson.build b/meson.build
index fcc30ab..68429f8 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -83,7 +83,9 @@ pkg.generate(name: meson.project_name(),
        libraries: dpdk_libraries,
        libraries_private: dpdk_drivers + dpdk_static_libraries +
                        ['-Wl,-Bdynamic'] + dpdk_extra_ldflags,
-       description: 'The Data Plane Development Kit (DPDK)',
+       description: '''The Data Plane Development Kit (DPDK).
+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.''',
        subdirs: [get_option('include_subdir_arch'), '.'],
        extra_cflags: ['-include', 'rte_config.h'] + machine_args
 )