ea02e3dde3
Work around a possible bug in the FRV compiler. What appears to be happening is that gcc resolves the __builtin_constant_p() in kmalloc() to true, but then fails to reduce the therefore constant conditions in the if-statements it guards to constant results. When compiling with -O2 or -Os, one single spurious error crops up in cpuup_callback() in mm/slab.c. This can be avoided by making the memsize variable const. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
116 lines
2.8 KiB
Makefile
116 lines
2.8 KiB
Makefile
#
|
|
# frv/Makefile
|
|
#
|
|
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies. Remember to do have actions
|
|
# for "archclean" and "archdep" for cleaning up and making dependencies for
|
|
# this architecture
|
|
#
|
|
# This file is subject to the terms and conditions of the GNU General Public
|
|
# License. See the file "COPYING" in the main directory of this archive
|
|
# for more details.
|
|
#
|
|
# Copyright (c) 2003, 2004 Red Hat Inc.
|
|
# - Written by David Howells <dhowells@redhat.com>
|
|
# - Derived from arch/m68knommu/Makefile,
|
|
# Copyright (c) 1999,2001 D. Jeff Dionne <jeff@lineo.ca>,
|
|
# Rt-Control Inc. / Lineo, Inc.
|
|
#
|
|
# Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uclinux.org>,
|
|
# Kenneth Albanowski <kjahds@kjahds.com>,
|
|
#
|
|
# Based on arch/m68k/Makefile:
|
|
# Copyright (C) 1994 by Hamish Macdonald
|
|
#
|
|
|
|
CCSPECS := $(shell $(CC) -v 2>&1 | grep "^Reading specs from " | head -1 | cut -c20-)
|
|
CCDIR := $(strip $(patsubst %/specs,%,$(CCSPECS)))
|
|
CPUCLASS := fr400
|
|
|
|
# test for cross compiling
|
|
COMPILE_ARCH = $(shell uname -m)
|
|
|
|
ifdef CONFIG_MMU
|
|
UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
|
|
else
|
|
UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
|
|
endif
|
|
|
|
ARCHMODFLAGS += -G0 -mlong-calls
|
|
|
|
ifdef CONFIG_GPREL_DATA_8
|
|
CFLAGS += -G8
|
|
else
|
|
ifdef CONFIG_GPREL_DATA_4
|
|
CFLAGS += -G4
|
|
else
|
|
ifdef CONFIG_GPREL_DATA_NONE
|
|
CFLAGS += -G0
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
#LDFLAGS_vmlinux := -Map linkmap.txt
|
|
|
|
ifdef CONFIG_GC_SECTIONS
|
|
CFLAGS += -ffunction-sections -fdata-sections
|
|
LINKFLAGS += --gc-sections
|
|
endif
|
|
|
|
ifndef CONFIG_FRAME_POINTER
|
|
CFLAGS += -mno-linked-fp
|
|
endif
|
|
|
|
ifdef CONFIG_CPU_FR451_COMPILE
|
|
CFLAGS += -mcpu=fr450
|
|
AFLAGS += -mcpu=fr450
|
|
ASFLAGS += -mcpu=fr450
|
|
else
|
|
ifdef CONFIG_CPU_FR551_COMPILE
|
|
CFLAGS += -mcpu=fr550
|
|
AFLAGS += -mcpu=fr550
|
|
ASFLAGS += -mcpu=fr550
|
|
else
|
|
CFLAGS += -mcpu=fr400
|
|
AFLAGS += -mcpu=fr400
|
|
ASFLAGS += -mcpu=fr400
|
|
endif
|
|
endif
|
|
|
|
# pretend the kernel is going to run on an FR400 with no media-fp unit
|
|
# - reserve CC3 for use with atomic ops
|
|
# - all the extra registers are dealt with only at context switch time
|
|
CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media
|
|
CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2
|
|
AFLAGS += -mno-fdpic
|
|
ASFLAGS += -mno-fdpic
|
|
|
|
# make sure the .S files get compiled with debug info
|
|
# and disable optimisations that are unhelpful whilst debugging
|
|
ifdef CONFIG_DEBUG_INFO
|
|
#CFLAGS += -O1
|
|
AFLAGS += -Wa,--gdwarf2
|
|
ASFLAGS += -Wa,--gdwarf2
|
|
endif
|
|
|
|
head-y := arch/frv/kernel/head.o arch/frv/kernel/init_task.o
|
|
|
|
core-y += arch/frv/kernel/ arch/frv/mm/
|
|
libs-y += arch/frv/lib/
|
|
|
|
core-$(CONFIG_MB93090_MB00) += arch/frv/mb93090-mb00/
|
|
|
|
all: Image
|
|
|
|
Image: vmlinux
|
|
$(Q)$(MAKE) $(build)=arch/frv/boot $@
|
|
|
|
bootstrap:
|
|
$(Q)$(MAKEBOOT) bootstrap
|
|
|
|
archclean:
|
|
$(Q)$(MAKE) $(clean)=arch/frv/boot
|
|
|
|
archdep: scripts/mkdep symlinks
|
|
$(Q)$(MAKE) $(build)=arch/frv/boot dep
|