source: floppyfw/package/linux/linux.mk @ 218

Revision 218, 7.1 KB checked in by root, 8 years ago (diff)

Way too much for one commit (as usual) but this is the 2.6 preparation and also fixes on the make system.

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# Encapsulate:
29ifeq ($(strip $(BR2_PACKAGE_LINUX_24)),y)
30
31
32# Version of Linux to download and then apply patches to
33DOWNLOAD_LINUX_VERSION=2.4.34
34# Version of Linux AFTER patches
35LINUX_VERSION=$(DOWNLOAD_LINUX_VERSION)-floppyfw-$(FLOPPYFW_VERSION)
36
37LINUX_FORMAT=bzImage
38LINUX_BINLOC=arch/$(ARCH)/boot/$(LINUX_FORMAT)
39
40LINUX_DIR=$(BUILD_DIR)/linux-$(LINUX_VERSION)
41LINUX_SOURCE=linux-$(DOWNLOAD_LINUX_VERSION).tar.bz2
42LINUX_SITE=ftp://ftp.kernel.org/pub/linux/kernel/v2.4
43LINUX_KERNEL=$(LINUX_DIR)/vmlinuz
44# Used by pcmcia-cs and others
45LINUX_SOURCE_DIR=$(LINUX_DIR)
46LINUX_MODULES_DEP=$(MODULES_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep
47
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=i386 -nostdinc -iwithprefix"
51
52LINUX_KCONFIG_24:=$(strip $(subst ",, $(LINUX_KCONFIG_24)))
53#"
54
55DEPMOD=scripts/depmod.pl
56DEPMOD_CMD= [ -d $(MODULES_DIR)/lib/modules/$(LINUX_VERSION) ] && \
57        $(DEPMOD) -n \
58        -b $(MODULES_DIR)/lib/modules/$(LINUX_VERSION)/ \
59        -F $(LINUX_DIR)/System.map \
60        > $(LINUX_MODULES_DEP)
61
62$(DL_DIR)/$(LINUX_SOURCE):
63         $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)
64
65$(LINUX_DIR)/.unpacked: \
66                busybox-source patch-o-matic-source hostap-driver-source \
67                $(IPTABLES_BUILD_DIR)/.configured $(DL_DIR)/$(LINUX_SOURCE)
68        ARGH!
69        # Just to make sure it's gone.
70        -$(RM) -r $(MODULES_DIR)/lib
71        -$(RM) $(MODULES_DIR)/.stripped
72        -$(RM) -r $(LINUX_DIR)
73        bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar $(TAR_VERBOSE) \
74                -C $(BUILD_DIR) -xf -
75# I shall not need this!
76ifneq ($(DOWNLOAD_LINUX_VERSION),$(LINUX_VERSION))
77        # Rename the dir from the downloaded version to the AFTER patch version
78        mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX_VERSION) $(LINUX_DIR)
79        touch $(LINUX_DIR)/.unpacked
80endif
81
82$(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
83        mkdir -p $(PATCH_DIR)/kernel
84        # Patching the kernel.
85        $(SCRIPTS_DIR)/patch-kernel.sh $(LINUX_DIR) $(PATCH_DIR)/kernel 0*
86        echo "Patched the kernel with $(PATCH_DIR)/kernel patches"
87
88        # Patching the kernel with iptables-pom-stuff:
89ifeq ($(BR2_PACKAGE_POM),y)
90        (cd $(PATCH_O_MATIC_DIR); \
91                KERNEL_DIR=$(LINUX_DIR) \
92                IPTABLES_DIR=$(IPTABLES_BUILD_DIR) \
93                ./runme --batch $(POM_PATCHES) \
94                 );
95endif
96ifeq ($(BR2_PACKAGE_HOSTAP),y)
97        (cd $(LINUX_DIR); \
98        cat $(HOSTAP_DRIVER_KERNEL_PATCH) | patch -p1 ; \
99        cp $(HOSTAP_DRIVER_DIR)/driver/modules/hostap*.[ch] \
100        drivers/net/wireless/. );
101endif
102
103        # Postpatching the kernel after iptables-pom-stuff because of the
104        # troublesome CONFIG_IP_NF_MATCH_OWNER option.
105        $(SCRIPTS_DIR)/patch-kernel.sh $(LINUX_DIR) \
106                $(PATCH_DIR)/kernel-after-pom 0*
107
108        # From a lwn article: need gcc 3.4/3.5,
109        # It segfaults with it..
110        #  -funit-at-a-time  -mregparm=3
111        # From a patch by Eric Anderson: (But these don't reduce size, weird)
112        #  -falign-functions=2 -falign-jumps=2 -falign-labels=2 -falign-loops=2
113        # From: http://www.ussg.iu.edu/hypermail/linux/kernel/0501.2/0856.html
114        #  -mpreferred-stack-boundary=2 -malign-loops=0 -malign-jumps=0 -malign-functions=0
115        #  But: -malign-loops is obsolete, use -falign-loops
116        #  -malign-jumps is obsolete, use -falign-jumps
117        #  -malign-functions is obsolete, use -falign-functions
118        #  And they don't make a smaller kernel than pure -Os anyway.
119        $(SED) 's/\-O2/-Os -pipe/;' $(LINUX_DIR)/Makefile
120        -(cd $(BUILD_DIR); ln -sf $(LINUX_DIR) linux)
121        touch $(LINUX_DIR)/.patched
122
123$(CONFIG_DIR)/$(LINUX_KCONFIG_24):
124        @if [ ! -f "$(CONFIG_DIR)/$(LINUX_KCONFIG_24)" ] ; then \
125                echo ""; \
126                echo "You should create a .config for your kernel"; \
127                echo "and install it as $(CONFIG_DIR)/$(LINUX_KCONFIG_24)"; \
128                echo ""; \
129                sleep 5; \
130        fi;
131
132$(LINUX_DIR)/.configured:  $(LINUX_DIR)/.patched  $(CONFIG_DIR)/$(LINUX_KCONFIG_24)
133        -cp $(CONFIG_DIR)/$(LINUX_KCONFIG_24) $(LINUX_DIR)/.config
134ifeq ($(strip $(EMULATE_FPU)),y)
135        $(SED) "s/^.*CONFIG_MATH_EMULATION.*/CONFIG_MATH_EMULATION=y/;" \
136                $(LINUX_DIR)/.config
137else
138        $(SED) "s/^.*CONFIG_MATH_EMULATION.*/CONFIG_MATH_EMULATION=n/;" \
139                $(LINUX_DIR)/.config
140endif
141# Don't need this right now.
142#ifeq ($(filter $(TARGETS),madwifi), madwifi)
143#       $(SED) "s/^.*CONFIG_CRYPTO.*/CONFIG_CRYPTO=y/;" \
144#               $(LINUX_DIR)/.config
145#endif
146        $(SED) 's/^EXTRAVERSION\s=\s(.*)/EXTRAVERSION = $$1-floppyfw-$(FLOPPYFW_VERSION)/;' \
147                $(LINUX_DIR)/Makefile
148        $(MAKE) -C $(LINUX_DIR) oldconfig include/linux/version.h
149        touch $(LINUX_DIR)/.configured
150
151linux-source-configured: $(LINUX_DIR)/.configured
152        Innom linux-source-configured
153
154$(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
155        $(MAKE) -C $(LINUX_DIR) dep
156        touch $(LINUX_DIR)/.depend_done
157
158$(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
159        $(MAKE) CC="$(TARGET_CC)" -C $(LINUX_DIR) $(LINUX_FORMAT)
160        $(MAKE) CC="$(TARGET_CC)" -C $(LINUX_DIR) modules
161        $(RM) -r $(MODULES_DIR)/lib/modules
162        $(MAKE) -C $(LINUX_DIR) INSTALL_MOD_PATH=$(MODULES_DIR) modules_install
163        (cd $(MODULES_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .)
164
165$(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
166        cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
167        # cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL).upx
168        # $(UPX) -9 $(LINUX_KERNEL).upx
169        touch -c $(LINUX_KERNEL)
170
171$(LINUX_MODULES_DEP): $(LINUX_KERNEL)
172        # Modutils-version
173        #/sbin/depmod -aen -F $(LINUX_DIR)/System.map -b $(MODULES_DIR)/lib/modules/$(LINUX_VERSION) > $(LINUX_MODULES_DEP)
174
175        # Back up first.
176        [ -f  $(LINUX_MODULES_DEP) ] && cp $(LINUX_MODULES_DEP) \
177                $(LINUX_MODULES_DEP).org
178
179        # Run depmod.
180        $(DEPMOD_CMD)
181
182        [ -f  $(LINUX_MODULES_DEP) ] && cp $(LINUX_MODULES_DEP) \
183                $(LINUX_MODULES_DEP).precaps
184
185        (cd $(MODULES_DIR) ; \
186                cat $(LINUX_MODULES_DEP) \
187                        | $(SCRIPTS_DIR)/capsfix.pl > $(TMP_DIR)/moddep \
188                );
189
190        mv $(TMP_DIR)/moddep $(LINUX_MODULES_DEP)
191
192linux: busybox-source patch-o-matic-source hostap-driver-source \
193                $(IPTABLES_BUILD_DIR)/.configured \
194                $(LINUX_MODULES_DEP)
195                # $(LINUX_KERNEL)
196
197linux-source: $(DL_DIR)/$(LINUX_SOURCE)
198
199linux-menuconfig: $(LINUX_DIR)/.configured
200        ( cd $(LINUX_DIR) ; \
201                make menuconfig ; \
202                cp .config $(CONFIG_DIR)/$(LINUX_KCONFIG_24) \
203        )
204
205# This has been renamed so we do _NOT_ by default run this on 'make clean'
206linuxclean: clean
207        $(RM) $(LINUX_KERNEL)
208        -$(MAKE) -C $(LINUX_DIR) clean
209
210linux-dirclean:
211        $(RM) -r $(LINUX_DIR)
212
213# End encapsulation
214endif
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