Commit | Line | Data |
---|---|---|
4f193362 PS |
1 | # |
2 | # This file is included by the global makefile so that you can add your own | |
3 | # architecture-specific flags and dependencies. | |
4 | # | |
4c9e1385 | 5 | # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
6 | # Licensed under the GPL |
7 | # | |
8 | ||
e40f04d0 RR |
9 | # select defconfig based on actual architecture |
10 | ifeq ($(SUBARCH),x86) | |
11 | ifeq ($(shell uname -m),x86_64) | |
12 | KBUILD_DEFCONFIG := x86_64_defconfig | |
13 | else | |
14 | KBUILD_DEFCONFIG := i386_defconfig | |
15 | endif | |
16 | else | |
17 | KBUILD_DEFCONFIG := $(SUBARCH)_defconfig | |
18 | endif | |
19 | ||
1da177e4 LT |
20 | ARCH_DIR := arch/um |
21 | OS := $(shell uname -s) | |
22 | # We require bash because the vmlinux link and loader script cpp use bash | |
23 | # features. | |
24 | SHELL := /bin/bash | |
25 | ||
26 | filechk_gen_header = $< | |
27 | ||
28 | core-y += $(ARCH_DIR)/kernel/ \ | |
29 | $(ARCH_DIR)/drivers/ \ | |
30 | $(ARCH_DIR)/os-$(OS)/ | |
31 | ||
8569c914 | 32 | MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas |
1da177e4 | 33 | |
7bbe7204 AV |
34 | HEADER_ARCH := $(SUBARCH) |
35 | ||
fff6540c RW |
36 | ifneq ($(filter $(SUBARCH),x86 x86_64 i386),) |
37 | HEADER_ARCH := x86 | |
7bbe7204 | 38 | endif |
fff6540c RW |
39 | |
40 | ifdef CONFIG_64BIT | |
12783aa0 | 41 | KBUILD_CFLAGS += -mcmodel=large |
7bbe7204 AV |
42 | endif |
43 | ||
5c48b108 AV |
44 | HOST_DIR := arch/$(HEADER_ARCH) |
45 | ||
a436bb7b MY |
46 | include $(ARCH_DIR)/Makefile-skas |
47 | include $(HOST_DIR)/Makefile.um | |
5c48b108 AV |
48 | |
49 | core-y += $(HOST_DIR)/um/ | |
1da177e4 | 50 | |
22409f9c AV |
51 | SHARED_HEADERS := $(ARCH_DIR)/include/shared |
52 | ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS) | |
5c48b108 AV |
53 | ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared |
54 | KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um | |
1da177e4 | 55 | |
98105d47 PBG |
56 | # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so |
57 | # named - it's a common symbol in libpcap, so we get a binary which crashes. | |
fd748104 | 58 | # |
98105d47 PBG |
59 | # Same things for in6addr_loopback and mktime - found in libc. For these two we |
60 | # only get link-time error, luckily. | |
61 | # | |
62 | # These apply to USER_CFLAGS to. | |
1da177e4 | 63 | |
dc5be20a | 64 | KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ |
98105d47 | 65 | $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ |
818f6ef4 | 66 | -Din6addr_loopback=kernel_in6addr_loopback \ |
2c51a4bc | 67 | -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr |
fd748104 | 68 | |
222d394d | 69 | KBUILD_AFLAGS += $(ARCH_INCLUDE) |
1da177e4 | 70 | |
298e20ba RW |
71 | USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \ |
72 | $(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \ | |
0b5aedfe RW |
73 | -D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \ |
74 | -idirafter $(obj)/include -D__KERNEL__ -D__UM_HOST__ | |
d45e44d4 | 75 | |
d45e44d4 | 76 | #This will adjust *FLAGS accordingly to the platform. |
a436bb7b | 77 | include $(ARCH_DIR)/Makefile-os-$(OS) |
ecc354a9 | 78 | |
c9b284b2 | 79 | KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \ |
abbf1590 DH |
80 | -I$(srctree)/$(HOST_DIR)/include/uapi \ |
81 | -I$(HOST_DIR)/include/generated \ | |
82 | -I$(HOST_DIR)/include/generated/uapi | |
1de1502c | 83 | |
ecc354a9 PBG |
84 | # -Derrno=kernel_errno - This turns all kernel references to errno into |
85 | # kernel_errno to separate them from the libc errno. This allows -fno-common | |
a0f97e06 | 86 | # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different |
ecc354a9 | 87 | # errnos. |
98105d47 | 88 | # These apply to kernelspace only. |
f15cf515 JD |
89 | # |
90 | # strip leading and trailing whitespace to make the USER_CFLAGS removal of these | |
91 | # defines more robust | |
ecc354a9 | 92 | |
f15cf515 JD |
93 | KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ |
94 | -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) | |
a0f97e06 | 95 | KBUILD_CFLAGS += $(KERNEL_DEFINES) |
1da177e4 | 96 | |
4f193362 | 97 | PHONY += linux |
1da177e4 LT |
98 | |
99 | all: linux | |
100 | ||
101 | linux: vmlinux | |
a4b741e3 | 102 | @echo ' LINK $@' |
cb8aa3d2 | 103 | $(Q)ln -f $< $@ |
1da177e4 LT |
104 | |
105 | define archhelp | |
106 | echo '* linux - Binary kernel image (./linux) - for backward' | |
107 | echo ' compatibility only, this creates a hard link to the' | |
4b3f686d | 108 | echo ' real kernel binary, the "vmlinux" binary you' |
1da177e4 LT |
109 | echo ' find in the kernel root.' |
110 | endef | |
111 | ||
5c48b108 | 112 | KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig |
1da177e4 | 113 | |
c9b284b2 | 114 | archheaders: |
d4bc590f | 115 | $(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders |
c9b284b2 | 116 | |
4de1c5f6 | 117 | archprepare: include/generated/user_constants.h |
1da177e4 LT |
118 | |
119 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static | |
120 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib | |
121 | ||
275e6e1e PBG |
122 | CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ |
123 | $(call cc-option, -fno-stack-protector,) \ | |
124 | $(call cc-option, -fno-stack-protector-all,) | |
125 | ||
51b563fc SR |
126 | # Options used by linker script |
127 | export LDS_START := $(START) | |
128 | export LDS_ELF_ARCH := $(ELF_ARCH) | |
129 | export LDS_ELF_FORMAT := $(ELF_FORMAT) | |
1da177e4 | 130 | |
4c9e1385 | 131 | # The wrappers will select whether using "malloc" or the kernel allocator. |
1da177e4 LT |
132 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc |
133 | ||
fb1770aa | 134 | LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt)) |
0ba7fe03 | 135 | |
1f2bfbd0 SR |
136 | # Used by link-vmlinux.sh which has special support for um link |
137 | export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) | |
1da177e4 | 138 | |
4c9e1385 JD |
139 | # When cleaning we don't include .config, so we don't include |
140 | # TT or skas makefiles and don't clean skas_ptregs.h. | |
9e636452 | 141 | CLEAN_FILES += linux x.i gmon.out |
1da177e4 | 142 | |
1da177e4 | 143 | archclean: |
1da177e4 LT |
144 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
145 | -o -name '*.gcov' \) -type f -print | xargs rm -f | |
146 | ||
1da177e4 | 147 | # Generated files |
4ee189a9 | 148 | |
392f4b7d | 149 | $(HOST_DIR)/um/user-offsets.s: __headers FORCE |
5c48b108 | 150 | $(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@ |
4ee189a9 | 151 | |
f64a227b SR |
152 | define filechk_gen-asm-offsets |
153 | (set -e; \ | |
f64a227b SR |
154 | echo "/*"; \ |
155 | echo " * DO NOT MODIFY."; \ | |
156 | echo " *"; \ | |
157 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ | |
158 | echo " *"; \ | |
159 | echo " */"; \ | |
160 | echo ""; \ | |
161 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ | |
ecba97d4 | 162 | echo ""; ) |
f64a227b SR |
163 | endef |
164 | ||
5c48b108 | 165 | include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s |
8d0b9dc9 AV |
166 | $(call filechk,gen-asm-offsets) |
167 | ||
5c48b108 | 168 | export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH |