Author: arichardson Date: Tue Aug 11 16:47:00 2020 New Revision: 364125 URL: https://svnweb.freebsd.org/changeset/base/364125
Log: Allow linking the kernel with a linker that doesn't support -z ifunc-noplt This can happen when linking with upstream LLD < 9.0. Reviewed By: markj Differential Revision: https://reviews.freebsd.org/D25985 Modified: head/share/mk/bsd.linker.mk head/sys/conf/kern.pre.mk Modified: head/share/mk/bsd.linker.mk ============================================================================== --- head/share/mk/bsd.linker.mk Tue Aug 11 16:46:54 2020 (r364124) +++ head/share/mk/bsd.linker.mk Tue Aug 11 16:47:00 2020 (r364125) @@ -94,6 +94,9 @@ ${X_}LINKER_FEATURES+= riscv-relaxations .if ${${X_}LINKER_TYPE} == "lld" && ${${X_}LINKER_VERSION} >= 60000 ${X_}LINKER_FEATURES+= retpoline .endif +.if ${${X_}LINKER_TYPE} == "lld" && ${${X_}LINKER_VERSION} >= 90000 +${X_}LINKER_FEATURES+= ifunc-noplt +.endif .endif .else # Use LD's values Modified: head/sys/conf/kern.pre.mk ============================================================================== --- head/sys/conf/kern.pre.mk Tue Aug 11 16:46:54 2020 (r364124) +++ head/sys/conf/kern.pre.mk Tue Aug 11 16:47:00 2020 (r364125) @@ -166,9 +166,13 @@ LDFLAGS+= -z max-page-size=2097152 .if ${LINKER_TYPE} != "lld" LDFLAGS+= -z common-page-size=4096 .else +.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} +.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." +.else LDFLAGS+= -z notext -z ifunc-noplt .endif .endif +.endif # ${MACHINE_CPUARCH} == "amd64" .if ${MACHINE_CPUARCH} == "riscv" # Hack: Work around undefined weak symbols being out of range when linking with _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
