"Cross" compilation for s390x

Pete Zaitcev
2003-03-12T15:58:35Z

Martin,

when I build s390x on s390 box, it fails without the
attached patch. Thought you might want to consder it.
If you support truly ancient compilers (2.7.2), it cannot
go in without some conditional compilation as sparc64 does.
Otherwise, it should be ok at least for 2.5.

Yours,
-- Pete

diff -urN -X dontdiff linux-2.4.20-2.1.14.s.1/arch/s390x/Makefile linux-2.4.20-2.1.14.s.2/arch/s390x/Makefile
--- linux-2.4.20-2.1.14.s.1/arch/s390x/Makefile 2002-08-02 20:39:43.000000000 -0400
+++ linux-2.4.20-2.1.14.s.2/arch/s390x/Makefile 2003-03-10 21:07:49.000000000 -0500
@@ -23,10 +23,11 @@
LINKFLAGS =-T $(TOPDIR)/arch/s390x/vmlinux.lds $(LDFLAGS)
endif
MODFLAGS += -fpic
+AFLAGS += -m64

CFLAGS_PIPE := -pipe
CFLAGS_NSR := -fno-strength-reduce
-CFLAGS := $(CFLAGS) $(CFLAGS_PIPE) $(CFLAGS_NSR)
+CFLAGS := $(CFLAGS) $(CFLAGS_PIPE) $(CFLAGS_NSR) -m64

HEAD := arch/s390x/kernel/head.o arch/s390x/kernel/init_task.o

diff -urN -X dontdiff linux-2.4.20-2.1.14.s.1/arch/s390x/vmlinux.lds linux-2.4.20-2.1.14.s.2/arch/s390x/vmlinux.lds
--- linux-2.4.20-2.1.14.s.1/arch/s390x/vmlinux.lds 2002-02-25 14:37:56.000000000 -0500
+++ linux-2.4.20-2.1.14.s.2/arch/s390x/vmlinux.lds 2003-03-10 21:07:49.000000000 -0500
@@ -1,8 +1,8 @@
-/* ld script to make s390 Linux kernel
+/* ld script to make s390x Linux kernel
* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
-OUTPUT_ARCH(s390)
+OUTPUT_ARCH(s390:64-bit)
ENTRY(_start)
SECTIONS
{