Module Name: src
Committed By: rin
Date: Thu Sep 10 02:34:13 UTC 2020
Modified Files:
src/share/mk: bsd.kmodule.mk
Log Message:
Turn off -mpltseq for kernel modules on powerpc for GCC >= 9.
Otherwise, object files compiled with -mlongcall contain relocation types
referring PLT, which our in-kernel linker cannot handle.
This ends up with failure in kernel module load with
``kobj_reloc: unexpected relocation type 31'' (31 == R_PPC_PLT16_HA here).
See descriptions for -mlongcall in gcc(1) of GCC9 for more details.
To generate a diff of this commit:
cvs rdiff -u -r1.70 -r1.71 src/share/mk/bsd.kmodule.mk
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/mk/bsd.kmodule.mk
diff -u src/share/mk/bsd.kmodule.mk:1.70 src/share/mk/bsd.kmodule.mk:1.71
--- src/share/mk/bsd.kmodule.mk:1.70 Sun Sep 6 07:20:28 2020
+++ src/share/mk/bsd.kmodule.mk Thu Sep 10 02:34:13 2020
@@ -1,4 +1,4 @@
-# $NetBSD: bsd.kmodule.mk,v 1.70 2020/09/06 07:20:28 mrg Exp $
+# $NetBSD: bsd.kmodule.mk,v 1.71 2020/09/10 02:34:13 rin Exp $
# We are not building this with PIE
MKPIE=no
@@ -51,6 +51,7 @@ CFLAGS+= -fno-common -fno-unwind-tables
CFLAGS+= -mlong-calls -mno-space-regs -mfast-indirect-calls
.elif ${MACHINE_CPU} == "powerpc"
CFLAGS+= ${${ACTIVE_CC} == "gcc":? -mlongcall :}
+CFLAGS+= ${${ACTIVE_CC} == "gcc" && ${HAVE_GCC:U0} >= 9:? -mno-pltseq :}
.elif ${MACHINE_CPU} == "vax"
CFLAGS+= -fno-pic
.elif ${MACHINE_CPU} == "riscv"
