From 48bdeb0db9c7ffed22c6eb859ee40b55ba598b86 Mon Sep 17 00:00:00 2001
From: V3n3RiX <venerix@redcorelinux.org>
Date: Wed, 20 Dec 2017 11:17:21 +0000
Subject: gentoo resync : 20.12.2017

---
 eclass/toolchain-glibc.eclass | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'eclass/toolchain-glibc.eclass')

diff --git a/eclass/toolchain-glibc.eclass b/eclass/toolchain-glibc.eclass
index 6580be2fb1e0..d9c692f2ad8f 100644
--- a/eclass/toolchain-glibc.eclass
+++ b/eclass/toolchain-glibc.eclass
@@ -815,6 +815,17 @@ glibc_do_configure() {
 		esac
 	fi
 
+	# Keep a whitelist of targets supporing IFUNC. glibc's ./configure
+	# is not robust enough to detect proper support:
+	#    https://bugs.gentoo.org/641216
+	#    https://sourceware.org/PR22634#c0
+	case $(tc-arch ${CTARGET}) in
+		# Keep whitelist of targets where autodetection mostly works.
+		amd64|x86|sparc|ppc|ppc64|arm|arm64|s390) ;;
+		# Blacklist everywhere else
+		*) myconf+=( libc_cv_ld_gnu_indirect_function=no ) ;;
+	esac
+
 	if version_is_at_least 2.25 ; then
 		myconf+=( --enable-stackguard-randomization )
 	else
-- 
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