[gentoo-dev] [PATCH multilib-build] Add multilib_is_native_abi() helper.

["Michał Górny" <mgorny@gentoo.org>]

We've been so far inlining the snippet into ebuilds. This meant that
some people didn't know how to do this, some more did it improperly and
in the end -- if it failed not good enough -- changing it will require
changing all the ebuilds.
---
 gx86/eclass/multilib-build.eclass | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/gx86/eclass/multilib-build.eclass b/gx86/eclass/multilib-build.eclass
index a4b7c01..22a471e 100644
--- a/gx86/eclass/multilib-build.eclass
+++ b/gx86/eclass/multilib-build.eclass
@@ -338,5 +338,21 @@ multilib_install_wrappers() {
 	fi
 }
 
+# @FUNCTION: multilib_is_native_abi
+# @DESCRIPTION:
+# Determine whether the currently built ABI is the profile native.
+# Return true status (0) if that is true, otherwise false (1).
+#
+# This is often useful for configure calls when some of the options are
+# supposed to be disabled for multilib ABIs (like those used for
+# executables only).
+multilib_is_native_abi() {
+	debug-print-function ${FUNCNAME} "${@}"
+
+	[[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments"
+
+	[[ ${ABI} == ${DEFAULT_ABI} ]]
+}
+
 _MULTILIB_BUILD=1
 fi
-- 
1.8.2.1