Author: emaste
Date: Fri Sep 21 17:49:37 2018
New Revision: 338861
URL: https://svnweb.freebsd.org/changeset/base/338861
Log:
libc: require ifunc-capable linker for amd64/i386
We expect to introduce optimized libc routines in the near future,
which requires use of a linker that supports ifuncs.
Approved by: re (gjb, kib)
Sponsored by: The FreeBSD Foundation
Modified:
head/lib/libc/Makefile
Modified: head/lib/libc/Makefile
==============================================================================
--- head/lib/libc/Makefile Fri Sep 21 17:44:05 2018 (r338860)
+++ head/lib/libc/Makefile Fri Sep 21 17:49:37 2018 (r338861)
@@ -21,6 +21,11 @@ LIBC_ARCH=${MACHINE_ARCH}
LIBC_ARCH=${MACHINE_CPUARCH}
.endif
+.if (${LIBC_ARCH} == amd64 || ${LIBC_ARCH} == i386) && \
+ defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
+.error ${LIBC_ARCH} libc requires linker ifunc support
+.endif
+
# All library objects contain FreeBSD revision strings by default; they may be
# excluded as a space-saving measure. To produce a library that does
# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
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