root/floppyfw-3.0/makefiles/linux.mk

Revision 278, 7.1 KB (checked in by root, 7 months ago)

Kernel.org has issues so I've moved the 2.4 kernel to my hosted package dir.
Line 
1#############################################################
2#
3# Linux kernel targets
4#
5# Note:  If you have any patches to apply, create the directory
6# sources/kernel-patches and put your patches in there and number
7# them in the order you wish to apply them...  i.e.
8#
9#   patches/kernel/001-my-special-stuff.bz2
10#   patches/kernel/003-gcc-Os.bz2
11#   patches/kernel/004_no-warnings.bz2
12#   patches/kernel/030-lowlatency-mini.bz2
13#   patches/kernel/031-lowlatency-fixes-5.bz2
14#   patches/kernel/099-shutup.bz2
15#   etc...
16#
17# these patches will all be applied by the patch-kernel.sh
18# script (which will also abort the build if it finds rejects)
19#  -Erik
20#
21# It will also do patch-o-matic patches, dependant on the patch-o-matic
22# TARGET and the POM_PATCHES list in the main Makefile.
23#
24# -Thomas.
25#
26#############################################################
27
28# Version of Linux to download and then apply patches to
29DOWNLOAD_LINUX_VERSION=2.4.37.11
30# Version of Linux AFTER patches
31LINUX_VERSION=$(DOWNLOAD_LINUX_VERSION)-floppyfw-$(FLOPPYFW_VERSION)
32
33LINUX_FORMAT=bzImage
34LINUX_BINLOC=arch/$(ARCH)/boot/$(LINUX_FORMAT)
35
36LINUX_DIR=$(BUILD_DIR)/linux-$(LINUX_VERSION)
37LINUX_SOURCE=linux-$(DOWNLOAD_LINUX_VERSION).tar.bz2
38# LINUX_SITE=ftp://ftp.kernel.org/pub/linux/kernel/v2.4
39LINUX_SITE=http://www.zelow.no/floppyfw/download/hosted_source_packages/
40LINUX_KCONFIG=$(CONFIG_DIR)/config-kernel
41LINUX_KERNEL=$(LINUX_DIR)/vmlinuz
42# Used by pcmcia-cs and others
43LINUX_SOURCE_DIR=$(LINUX_DIR)
44
45LINUX_MODULES_DEP=$(MODULES_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep
46
47UPX=upx-1.11
48#LINUX_CC_OPTS="-Os -pipe"
49# LINUX_CC_OPTS="-Os -mregparm=3 -falign-functions=2 -falign-jumps=2 -falign-labels=2 -falign-loops=2"
50#LINUX_CC_OPTS="-Os -funit-at-a-time  -mregparm=3 -Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=$(ARCH) -nostdinc -iwithprefix"
51
52$(DL_DIR)/$(LINUX_SOURCE):
53         $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)
54
55$(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) 
56        -$(RM) -r $(MODULES_DIR)/lib
57        -$(RM) $(MODULES_DIR)/.stripped
58        -$(RM) -r $(LINUX_DIR)
59        bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar $(TAR_VERBOSE) \
60                -C $(BUILD_DIR) -xf -
61ifneq ($(DOWNLOAD_LINUX_VERSION),$(LINUX_VERSION))
62        # Rename the dir from the downloaded version to the AFTER patch version
63        mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX_VERSION) $(LINUX_DIR)
64        touch $(LINUX_DIR)/.unpacked
65endif
66
67$(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
68        mkdir -p $(PATCH_DIR)/kernel
69        # Patching the kernel.
70        $(PATCH_DIR)/patch-kernel.sh $(LINUX_DIR) $(PATCH_DIR)/kernel 0*
71        echo "Patched the kernel with $(PATCH_DIR)/kernel patches"
72
73        # Patching the kernel with iptables-pom-stuff:
74ifeq ($(filter $(TARGETS),patch-o-matic), patch-o-matic)
75        (cd $(PATCH_O_MATIC_DIR); \
76                KERNEL_DIR=$(LINUX_DIR) \
77                IPTABLES_DIR=$(IPTABLES_BUILD_DIR) \
78                ./runme --batch $(POM_PATCHES) \
79                 );
80endif
81ifeq ($(filter $(TARGETS),hostap), hostap)
82        (cd $(LINUX_DIR); \
83        cat $(HOSTAP_DRIVER_KERNEL_PATCH) | patch -p1 ; \
84        cp $(HOSTAP_DRIVER_DIR)/driver/modules/hostap*.[ch] \
85                drivers/net/wireless/. );
86endif
87
88        # Postpatching the kernel after iptables-pom-stuff because of the
89        # troublesome CONFIG_IP_NF_MATCH_OWNER option.
90        $(PATCH_DIR)/patch-kernel.sh $(LINUX_DIR) \
91                $(PATCH_DIR)/kernel-after-pom 0*
92
93        # From a lwn article: need gcc 3.4/3.5,
94        # It segfaults with it..
95        #  -funit-at-a-time  -mregparm=3
96        # From a patch by Eric Anderson: (But these don't reduce size, weird)
97        #  -falign-functions=2 -falign-jumps=2 -falign-labels=2 -falign-loops=2
98        # From: http://www.ussg.iu.edu/hypermail/linux/kernel/0501.2/0856.html
99        #  -mpreferred-stack-boundary=2 -malign-loops=0 -malign-jumps=0 -malign-functions=0
100        #  But: -malign-loops is obsolete, use -falign-loops
101        #  -malign-jumps is obsolete, use -falign-jumps
102        #  -malign-functions is obsolete, use -falign-functions
103        #  And they don't make a smaller kernel than pure -Os anyway.
104        $(SED) 's/\-O2/-Os -pipe/;' $(LINUX_DIR)/Makefile
105        -(cd $(BUILD_DIR); ln -sf $(LINUX_DIR) linux)
106        touch $(LINUX_DIR)/.patched
107
108$(LINUX_KCONFIG):
109        @if [ ! -f "$(LINUX_KCONFIG)" ] ; then \
110                echo ""; \
111                echo "You should create a .config for your kernel"; \
112                echo "and install it as $(LINUX_KCONFIG)"; \
113                echo ""; \
114                sleep 5; \
115        fi;
116
117
118$(LINUX_DIR)/.configured:  $(LINUX_DIR)/.patched  $(LINUX_KCONFIG)
119        -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
120ifeq ($(strip $(EMULATE_FPU)),true)
121        $(SED) "s/^.*CONFIG_MATH_EMULATION.*/CONFIG_MATH_EMULATION=y/;" \
122                $(LINUX_DIR)/.config
123else
124        $(SED) "s/^.*CONFIG_MATH_EMULATION.*/CONFIG_MATH_EMULATION=n/;" \
125                $(LINUX_DIR)/.config
126endif
127
128# It's default on now.
129#ifeq ($(filter $(TARGETS),madwifi), madwifi)
130#       $(SED) "s/^.*CONFIG_CRYPTO.*/CONFIG_CRYPTO=y/;" \
131#               $(LINUX_DIR)/.config
132#endif
133
134        $(SED) 's/^EXTRAVERSION\s=\s(.*)/EXTRAVERSION = $$1-floppyfw-$(FLOPPYFW_VERSION)/;' \
135                $(LINUX_DIR)/Makefile
136        $(MAKE) D=1 V=1 ARCH=$(ARCH) -C $(LINUX_DIR) oldconfig include/linux/version.h
137        # Annoying but hopefully this is enough:
138        # And I'm using perl as sed...
139        $(SED) 's/CONFIG_X86_64.*//' $(LINUX_DIR)/.config
140        touch $(LINUX_DIR)/.configured
141
142linux-source-configured: $(LINUX_DIR)/.configured
143
144$(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
145        $(MAKE) D=1 V=1 ARCH=$(ARCH) -C $(LINUX_DIR) dep
146        touch $(LINUX_DIR)/.depend_done
147
148$(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
149        $(MAKE) D=1 V=1 ARCH=$(ARCH) CC="$(TARGET_CC)" -C $(LINUX_DIR) $(LINUX_FORMAT)
150        $(MAKE) D=1 V=1 ARCH=$(ARCH) CC="$(TARGET_CC)" -C $(LINUX_DIR) modules
151
152$(LINUX_MODULES_DEP): $(LINUX_DIR)/.depend_done
153        $(RM) -r $(MODULES_DIR)/lib/modules
154        $(MAKE) D=1 V=1 ARCH=$(ARCH) -C $(LINUX_DIR) INSTALL_MOD_PATH=$(MODULES_DIR) modules_install
155
156        [ -d $(MODULES_DIR)/lib/modules/$(LINUX_VERSION) ] && \
157        $(BASE_DIR)/perl/depmod.pl -n \
158                -b $(MODULES_DIR)/lib/modules/$(LINUX_VERSION)/ \
159                -k $(LINUX_DIR)/vmlinux \
160                > $(LINUX_MODULES_DEP)
161
162        (cd $(MODULES_BASE_DIR) ; cat $(LINUX_MODULES_DEP) | $(BASE_DIR)/perl/capsfix.pl > $(TMP_DIR)/moddep )
163
164        cp $(LINUX_MODULES_DEP) $(LINUX_MODULES_DEP).precaps
165
166        cp $(TMP_DIR)/moddep $(LINUX_MODULES_DEP)
167
168        (cd $(MODULES_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .)
169        # $(DEPMOD)
170
171$(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
172        cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
173        # cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL).upx
174        # $(UPX) -9 $(LINUX_KERNEL).upx
175        touch -c $(LINUX_KERNEL)
176
177
178linux:  patch-o-matic hostap-driver-source $(IPTABLES_BUILD_DIR)/.configured $(LINUX_KERNEL) $(LINUX_MODULES_DEP)
179
180linux-depmod: linux
181        # Modutils-version
182        #/sbin/depmod -aen -F $(LINUX_DIR)/System.map -b $(MODULES_DIR)/lib/modules/$(LINUX_VERSION) > $(LINUX_MODULES_DEP)
183
184        [ -f $(LINUX_MODULES_DEP) ] && \
185                cp $(LINUX_MODULES_DEP) $(LINUX_MODULES_DEP).precaps
186
187        # busybox perl.
188        [ -d $(MODULES_DIR)/lib/modules/$(LINUX_VERSION) ] && \
189        $(BASE_DIR)/perl/depmod.pl -n \
190                -b $(MODULES_DIR)/lib/modules/$(LINUX_VERSION)/ \
191                -k $(LINUX_DIR)/vmlinux \
192                > $(LINUX_MODULES_DEP)
193
194        # "Sanitizing" it.
195        $(SED) 's/\\\n//' $(LINUX_MODULES_DEP)
196
197linux-source: $(DL_DIR)/$(LINUX_SOURCE)
198
199# This has been renamed so we do _NOT_ by default run this on 'make clean'
200linuxclean: clean
201        $(RM) $(LINUX_KERNEL)
202        -$(MAKE) ARCH=$(ARCH) -C $(LINUX_DIR) clean
203
204linux-dirclean:
205        $(RM) -r $(LINUX_DIR)
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