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1 | # |
2 | # This file is included by the global makefile so that you can add your own |
3 | # architecture-specific flags and dependencies. |
4 | # |
5 | # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
6 | # Licensed under the GPL |
7 | # |
8 | |
9 | ARCH_DIR := arch/um |
10 | OS := $(shell uname -s) |
11 | # We require bash because the vmlinux link and loader script cpp use bash |
12 | # features. |
13 | SHELL := /bin/bash |
14 | |
15 | filechk_gen_header = $< |
16 | |
17 | core-y += $(ARCH_DIR)/kernel/ \ |
18 | $(ARCH_DIR)/drivers/ \ |
19 | $(ARCH_DIR)/os-$(OS)/ |
20 | |
21 | MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas |
22 | |
23 | include $(srctree)/$(ARCH_DIR)/Makefile-skas |
24 | |
25 | SHARED_HEADERS := $(ARCH_DIR)/include/shared |
26 | ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS) |
27 | ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared |
28 | ifneq ($(KBUILD_SRC),) |
29 | ARCH_INCLUDE += -I$(SHARED_HEADERS) |
30 | endif |
31 | KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH) |
32 | |
33 | # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so |
34 | # named - it's a common symbol in libpcap, so we get a binary which crashes. |
35 | # |
36 | # Same things for in6addr_loopback and mktime - found in libc. For these two we |
37 | # only get link-time error, luckily. |
38 | # |
39 | # These apply to USER_CFLAGS to. |
40 | |
41 | KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ |
42 | $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ |
43 | -Din6addr_loopback=kernel_in6addr_loopback \ |
44 | -Din6addr_any=kernel_in6addr_any |
45 | |
46 | KBUILD_AFLAGS += $(ARCH_INCLUDE) |
47 | |
48 | USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ |
49 | $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ |
50 | $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 |
51 | |
52 | include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) |
53 | |
54 | #This will adjust *FLAGS accordingly to the platform. |
55 | include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) |
56 | |
57 | KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include |
58 | |
59 | # -Derrno=kernel_errno - This turns all kernel references to errno into |
60 | # kernel_errno to separate them from the libc errno. This allows -fno-common |
61 | # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different |
62 | # errnos. |
63 | # These apply to kernelspace only. |
64 | # |
65 | # strip leading and trailing whitespace to make the USER_CFLAGS removal of these |
66 | # defines more robust |
67 | |
68 | KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ |
69 | -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) |
70 | KBUILD_CFLAGS += $(KERNEL_DEFINES) |
71 | |
72 | PHONY += linux |
73 | |
74 | all: linux |
75 | |
76 | linux: vmlinux |
77 | @echo ' LINK $@' |
78 | $(Q)ln -f $< $@ |
79 | |
80 | define archhelp |
81 | echo '* linux - Binary kernel image (./linux) - for backward' |
82 | echo ' compatibility only, this creates a hard link to the' |
83 | echo ' real kernel binary, the "vmlinux" binary you' |
84 | echo ' find in the kernel root.' |
85 | endef |
86 | |
87 | KBUILD_KCONFIG := arch/um/Kconfig.$(HEADER_ARCH) |
88 | |
89 | archprepare: $(SHARED_HEADERS)/user_constants.h |
90 | archprepare: $(SHARED_HEADERS)/kern_constants.h |
91 | |
92 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static |
93 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib |
94 | |
95 | CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ |
96 | $(call cc-option, -fno-stack-protector,) \ |
97 | $(call cc-option, -fno-stack-protector-all,) |
98 | |
99 | # Options used by linker script |
100 | export LDS_START := $(START) |
101 | export LDS_ELF_ARCH := $(ELF_ARCH) |
102 | export LDS_ELF_FORMAT := $(ELF_FORMAT) |
103 | |
104 | # The wrappers will select whether using "malloc" or the kernel allocator. |
105 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc |
106 | |
107 | LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt)) |
108 | |
109 | CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) |
110 | define cmd_vmlinux__ |
111 | $(CC) $(CFLAGS_vmlinux) -o $@ \ |
112 | -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ |
113 | -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ |
114 | -lutil \ |
115 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o \ |
116 | FORCE ,$^) ; rm -f linux |
117 | endef |
118 | |
119 | # When cleaning we don't include .config, so we don't include |
120 | # TT or skas makefiles and don't clean skas_ptregs.h. |
121 | CLEAN_FILES += linux x.i gmon.out \ |
122 | $(SHARED_HEADERS)/user_constants.h \ |
123 | $(SHARED_HEADERS)/kern_constants.h |
124 | |
125 | archclean: |
126 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
127 | -o -name '*.gcov' \) -type f -print | xargs rm -f |
128 | |
129 | # Generated files |
130 | |
131 | $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE |
132 | $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@ |
133 | |
134 | define filechk_gen-asm-offsets |
135 | (set -e; \ |
136 | echo "/*"; \ |
137 | echo " * DO NOT MODIFY."; \ |
138 | echo " *"; \ |
139 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ |
140 | echo " *"; \ |
141 | echo " */"; \ |
142 | echo ""; \ |
143 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ |
144 | echo ""; ) |
145 | endef |
146 | |
147 | $(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s |
148 | $(call filechk,gen-asm-offsets) |
149 | |
150 | $(SHARED_HEADERS)/kern_constants.h: |
151 | $(Q)mkdir -p $(dir $@) |
152 | $(Q)echo '#include "../../../../include/generated/asm-offsets.h"' >$@ |
153 | |
154 | export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH |
155 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9