[gentoo-dev] Re: [PATCH multilib-build.eclass] Add multilib_native_use* functions to make ebuild writing easier.

[Jonathan Callen]

On 04/19/2014 06:53 AM, Michał Górny wrote:
> People are either inlining this or creating local functions for this
> purpose, so it'd be better to have them in the eclass.
>
> RFC: what about '!use'? Should we invert the multilib_build_binaries
> test as well?
> ---
>  eclass/multilib-build.eclass | 48 ++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>
> diff --git a/eclass/multilib-build.eclass b/eclass/multilib-build.eclass
> index 77e7573..6adfc76 100644
> --- a/eclass/multilib-build.eclass
> +++ b/eclass/multilib-build.eclass
> @@ -462,5 +462,53 @@ multilib_build_binaries() {
>  	[[ ${COMPLETE_MULTILIB} == yes ]] || multilib_is_native_abi
>  }
>
> +# @FUNCTION: multilib_native_use_with
> +# @USAGE: <flag> [<opt-name> [<opt-value>]]
> +# @DESCRIPTION:
> +# Output --with configure option alike use_with if USE <flag> is enabled
> +# and executables are being built (multilib_build_binaries is true).
> +# Otherwise, outputs --without configure option. Arguments are the same
> +# as for use_with in the EAPI.
> +multilib_native_use_with() {
> +	if multilib_build_binaries; then
> +		use_with "${@}"
> +	else
> +		echo "--without-${2:-${1}}"
> +	fi
> +}
> +
> +# @FUNCTION: multilib_native_use_enable
> +# @USAGE: <flag> [<opt-name> [<opt-value>]]
> +# @DESCRIPTION:
> +# Output --enable configure option alike use_with if USE <flag>
> +# is enabled and executables are being built (multilib_build_binaries
> +# is true). Otherwise, outputs --disable configure option. Arguments are
> +# the same as for use_enable in the EAPI.
> +multilib_native_use_enable() {
> +	if multilib_build_binaries; then
> +		use_enable "${@}"
> +	else
> +		echo "--disable-${2:-${1}}"
> +	fi
> +}
> +
> +# @FUNCTION: multilib_native_usex
> +# @USAGE: <flag> [<true1> [<false1> [<true2> [<false2>]]]]
> +# @DESCRIPTION:
> +# Output the concatenation of <true1> (or 'yes' if unspecified)
> +# and <true2> if USE <flag> is enabled and executables are being built
> +# (multilib_build_binaries is true). Otherwise, output the concatenation
> +# of <false1> (or 'no' if unspecified) and <false2>. Arguments
> +# are the same as for usex in the EAPI.
> +#
> +# Note: in EAPI 4 you need to inherit eutils to use this function.
> +multilib_native_usex() {
> +	if multilib_build_binaries; then
> +		usex "${@}"
> +	else
> +		echo "${3-no}${5}"
> +	fi
> +}
> +
>  _MULTILIB_BUILD=1
>  fi
>

These all look good to me (being one of the offenders mentioned above).

-- 
Jonathan Callen