[dpdk-dev] [PATCH 1/2] mk: move libs that don't dependent PMD libs out of whole archive

[Thomas Monjalon]

2017-01-31 11:59, Ferruh Yigit:
> During app build with static library, some libraries wrapped with
> --whole-archive compiler flag.
> 
> Wrapped libraries are mainly PMD libraries, this is required because PMD
> APIs not directly called but run through callbacks registered via
> constructor functions.
> 
> Also some set of libraries, depends to the PMD libraries needs this,
> because of same reason.

All the libraries used by a plugin (any driver) must be in --whole-archive
to ensure that every symbols will be available for the plugin.
This should be explained in this patch (verbatim copy allowed).

> But other libraries can be out of this flag, and this saves some size in
> final binary.
[...]
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_EFD)            += -lrte_efd
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
> +
>  _LDLIBS-y += --whole-archive

Yes we can move these libraries out of --whole-archive as they are not
used by any driver.

Acked-by: Thomas Monjalon <thomas.monjalon at 6wind.com>