Re: [dpdk-dev] [PATCH v6 9/9] build: generate version.map file for MingW on Windows

[Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>]

[snip]
> diff --git a/drivers/meson.build b/drivers/meson.build
> index 646a7d5eb5..b25a368531 100644
> --- a/drivers/meson.build
> +++ b/drivers/meson.build
> @@ -152,16 +152,22 @@ foreach class:dpdk_driver_classes
>  			implib = 'lib' + lib_name + '.dll.a'
>  
>  			def_file = custom_target(lib_name + '_def',
> -				command: [map_to_def_cmd, '@INPUT@', '@OUTPUT@'],
> +				command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
>  				input: version_map,
>  				output: '@0@_exports.def'.format(lib_name))
> -			lk_deps = [version_map, def_file]
> +
> +			mingw_map = custom_target(name + '_mingw',
> +				command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
> +				input: version_map,
> +				output: '@0@_mingw.map'.format(name))

Hit the following error while building a Linux-targeted DPDK:

drivers/meson.build:159:3: ERROR: Tried to create target "dpaa_mingw", but a target of that name already exists.

Probably you need "lib_name" instead of "name" or just to disable the target
for non-Windows builds.

> +
> +			lk_deps = [version_map, def_file, mingw_map]
>  			if is_windows
>  				if is_ms_linker
>  					lk_args = ['-Wl,/def:' + def_file.full_path(),
>  						'-Wl,/implib:drivers\\' + implib]
>  				else
> -					lk_args = []
> +					lk_args = ['-Wl,--version-script=' + mingw_map.full_path()]
>  				endif
>  			else
>  				lk_args = ['-Wl,--version-script=' + version_map]
> diff --git a/lib/meson.build b/lib/meson.build
> index a8fd317a18..9f6c85a3e1 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -150,18 +150,27 @@ foreach l:libraries
>  			implib = dir_name + '.dll.a'
>  
>  			def_file = custom_target(name + '_def',
> -				command: [map_to_def_cmd, '@INPUT@', '@OUTPUT@'],
> +				command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
>  				input: version_map,
>  				output: 'rte_@0@_exports.def'.format(name))
>  
> +			mingw_map = custom_target(name + '_mingw',
> +				command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
> +				input: version_map,
> +				output: 'rte_@0@_mingw.map'.format(name))
> +

See above on name/lib_name. Maybe it's technically irrelevant here, but
better use consistent name generation code.

-- 
Dmitry Kozlyuk