aboutsummaryrefslogtreecommitdiffstats
path: root/meta/recipes-kernel/linux/kernel-devsrc.bb
blob: b3f529237a9025e62ff6f1a2651cf3d3a6cbc4ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
SUMMARY = "Linux kernel Development Source"
DESCRIPTION = "Development source linux kernel. When built, this recipe packages the \
source of the preferred virtual/kernel provider and makes it available for full kernel \
development or external module builds"

SECTION = "kernel"

LICENSE = "GPLv2"

inherit linux-kernel-base

# Whilst not a module, this ensures we don't get multilib extended (which would make no sense)
inherit module-base

# We need the kernel to be staged (unpacked, patched and configured) before
# we can grab the source and make the source package. We also need the bits from
# ${B} not to change while we install, so virtual/kernel must finish do_compile.
do_install[depends] += "virtual/kernel:do_shared_workdir"
# Need the source, not just the output of populate_sysroot
do_install[depends] += "virtual/kernel:do_install"

# There's nothing to do here, except install the source where we can package it
do_fetch[noexec] = "1"
do_unpack[noexec] = "1"
do_patch[noexec] = "1"
do_configure[noexec] = "1"
do_compile[noexec] = "1"
do_populate_sysroot[noexec] = "1"

S = "${STAGING_KERNEL_DIR}"
B = "${STAGING_KERNEL_BUILDDIR}"

PACKAGE_ARCH = "${MACHINE_ARCH}"

KERNEL_BUILD_ROOT="/lib/modules/"

do_install() {
    kerneldir=${D}${KERNEL_BUILD_ROOT}${KERNEL_VERSION}
    install -d $kerneldir

    # create the directory structure
    rm -f $kerneldir/build
    rm -f $kerneldir/source
    mkdir -p $kerneldir/build

    # for compatibility with some older variants of this package, we
    # create  a /usr/src/kernel symlink to /lib/modules/<version>/source
    mkdir -p ${D}/usr/src
    (
	cd ${D}/usr/src
	ln -s ${KERNEL_BUILD_ROOT}${KERNEL_VERSION}/source kernel
    )

    # for on target purposes, we unify build and source
    (
	cd $kerneldir
	ln -s build source
    )

    # first copy everything
    (
	cd ${S}
	cp --parents $(find  -type f -name "Makefile*" -o -name "Kconfig*") $kerneldir/build
	cp --parents $(find  -type f -name "Build" -o -name "Build.include") $kerneldir/build
    )

    # then drop all but the needed Makefiles/Kconfig files
    rm -rf $kerneldir/build/Documentation
    rm -rf $kerneldir/build/scripts
    rm -rf $kerneldir/build/include

    # now copy in parts from the build that we'll need later
    (
	cd ${B}

	cp Module.symvers $kerneldir/build
	cp System.map* $kerneldir/build
	if [ -s Module.markers ]; then
	    cp Module.markers $kerneldir/build
	fi

	cp .config $kerneldir/build

	# This scripts copy blow up QA, so for now, we require a more
	# complex 'make scripts' to restore these, versus copying them
	# here. Left as a reference to indicate that we know the scripts must
	# be dealt with.
	# cp -a scripts $kerneldir/build

        if [ -d arch/${ARCH}/scripts ]; then
	    cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH}
	fi
	if [ -f arch/${ARCH}/*lds ]; then
	    cp -a arch/${ARCH}/*lds $kerneldir/build/arch/${ARCH}
	fi

	rm -f $kerneldir/build/scripts/*.o
	rm -f $kerneldir/build/scripts/*/*.o

	if [ "${ARCH}" = "powerpc" ]; then
	    if [ -e arch/powerpc/lib/crtsavres.S ] ||
		   [ -e arch/powerpc/lib/crtsavres.o ]; then
		cp -a --parents arch/powerpc/lib/crtsavres.[So] $kerneldir/build/
	    fi
	fi

	if [ "${ARCH}" = "arm64" ]; then
	    cp -a --parents arch/arm64/kernel/vdso/vdso.lds $kerneldir/build/
	fi

	cp -a include $kerneldir/build/include
    )

    # now grab the chunks from the source tree that we need
    (
	cd ${S}

	cp -a scripts $kerneldir/build

	# if our build dir had objtool, it will also be rebuilt on target, so
	# we copy what is required for that build
	if [ -f ${B}/tools/objtool/objtool ]; then
	    # these are a few files associated with objtool, since we'll need to
	    # rebuild it
	    cp -a --parents tools/build/Build.include $kerneldir/build/
	    cp -a --parents tools/build/Build $kerneldir/build/
	    cp -a --parents tools/build/fixdep.c $kerneldir/build/
	    cp -a --parents tools/scripts/utilities.mak $kerneldir/build/

	    # extra files, just in case
	    cp -a --parents tools/objtool/* $kerneldir/build/
	    cp -a --parents tools/lib/str_error_r.c $kerneldir/build/
	    cp -a --parents tools/lib/string.c $kerneldir/build/
	    cp -a --parents tools/lib/subcmd/* $kerneldir/build/

	    cp -a --parents tools/include/* $kerneldir/build/
	fi

	if [ "${ARCH}" = "arm64" ]; then
	    # arch/arm64/include/asm/xen references arch/arm
	    cp -a --parents arch/arm/include/asm/xen $kerneldir/build/
	    # arch/arm64/include/asm/opcodes.h references arch/arm
	    cp -a --parents arch/arm/include/asm/opcodes.h $kerneldir/build/

            cp -a --parents arch/arm64/kernel/vdso/gettimeofday.S $kerneldir/build/
            cp -a --parents arch/arm64/kernel/vdso/sigreturn.S $kerneldir/build/
            cp -a --parents arch/arm64/kernel/vdso/note.S $kerneldir/build/
            cp -a --parents arch/arm64/kernel/vdso/gen_vdso_offsets.sh $kerneldir/build/
	fi

	# include the machine specific headers for ARM variants, if available.
	if [ "${ARCH}" = "arm" ]; then
	    cp -a --parents arch/${ARCH}/mach-*/include $kerneldir/build/

	    # include a few files for 'make prepare'
	    cp -a --parents arch/arm/tools/gen-mach-types $kerneldir/build/
	    cp -a --parents arch/arm/tools/mach-types $kerneldir/build/
	    cp -a --parents arch/arm/tools/syscall* $kerneldir/build/
	fi

	if [ -d arch/${ARCH}/include ]; then
	    cp -a --parents arch/${ARCH}/include $kerneldir/build/
	fi

	cp -a include $kerneldir/build

	cp -a --parents tools/include/tools/le_byteshift.h $kerneldir/build/
	cp -a --parents tools/include/tools/be_byteshift.h $kerneldir/build/

	# required for generate missing syscalls prepare phase
	cp -a --parents arch/x86/entry/syscalls/syscall_32.tbl $kerneldir/build

	if [ "${ARCH}" = "x86" ]; then
	    # files for 'make prepare' to succeed with kernel-devel
	    cp -a --parents arch/x86/entry/syscalls/syscall_32.tbl $kerneldir/build/
	    cp -a --parents arch/x86/entry/syscalls/syscalltbl.sh $kerneldir/build/
	    cp -a --parents arch/x86/entry/syscalls/syscallhdr.sh $kerneldir/build/
	    cp -a --parents arch/x86/entry/syscalls/syscall_64.tbl $kerneldir/build/
	    cp -a --parents arch/x86/tools/relocs_32.c $kerneldir/build/
	    cp -a --parents arch/x86/tools/relocs_64.c $kerneldir/build/
	    cp -a --parents arch/x86/tools/relocs.c $kerneldir/build/
	    cp -a --parents arch/x86/tools/relocs_common.c $kerneldir/build/
	    cp -a --parents arch/x86/tools/relocs.h $kerneldir/build/
	    cp -a --parents arch/x86/purgatory/purgatory.c $kerneldir/build/

	    # 4.18 + have unified the purgatory files, so we ignore any errors if
	    # these files are not present
	    cp -a --parents arch/x86/purgatory/sha256.h $kerneldir/build/ 2>/dev/null || :
	    cp -a --parents arch/x86/purgatory/sha256.c $kerneldir/build/ 2>/dev/null || :

	    cp -a --parents arch/x86/purgatory/stack.S $kerneldir/build/
	    cp -a --parents arch/x86/purgatory/string.c $kerneldir/build/
	    cp -a --parents arch/x86/purgatory/setup-x86_64.S $kerneldir/build/
	    cp -a --parents arch/x86/purgatory/entry64.S $kerneldir/build/
	    cp -a --parents arch/x86/boot/string.h $kerneldir/build/
	    cp -a --parents arch/x86/boot/string.c $kerneldir/build/
	    cp -a --parents arch/x86/boot/ctype.h $kerneldir/build/
	fi

	if [ "${ARCH}" = "mips" ]; then
	    cp -a --parents arch/mips/Kbuild.platforms $kerneldir/build/
	    cp --parents $(find	 -type f -name "Platform") $kerneldir/build
	    cp --parents arch/mips/boot/tools/relocs* $kerneldir/build
	    cp -a --parents arch/mips/kernel/asm-offsets.c $kerneldir/build
	    cp -a --parents kernel/time/timeconst.bc $kerneldir/build
	    cp -a --parents kernel/bounds.c $kerneldir/build
	    cp -a --parents Kbuild $kerneldir/build
	fi
    )

    # Make sure the Makefile and version.h have a matching timestamp so that
    # external modules can be built
    touch -r $kerneldir/build/Makefile $kerneldir/build/include/generated/uapi/linux/version.h

    # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
    cp $kerneldir/build/.config $kerneldir/build/include/config/auto.conf

    chown -R root:root ${D}
}

# Ensure we don't race against "make scripts" during cpio
do_install[lockfiles] = "${TMPDIR}/kernel-scripts.lock"

FILES_${PN} = "${KERNEL_BUILD_ROOT} ${KERNEL_SRC_PATH}"
FILES_${PN}-dbg += "${KERNEL_BUILD_ROOT}*/build/scripts/*/.debug/*"

RDEPENDS_${PN} = "bc python flex bison ${TCLIBC}-utils"
# 4.15+ needs these next two RDEPENDS
RDEPENDS_${PN} += "openssl-dev util-linux"
# and x86 needs a bit more for 4.15+
RDEPENDS_${PN} += "${@bb.utils.contains('ARCH', 'x86', 'elfutils', '', d)}"