1SUMMARY = "Sanitized set of kernel headers for the C library's use"
2HOMEPAGE = "https://www.kernel.org/"
3DESCRIPTION = "Designed to maintain an Application Programming Interface (API) stable version of the Linux headers"
4SECTION = "devel"
5LICENSE = "GPL-2.0-only"
6
7#########################################################################
8####                        PLEASE READ
9#########################################################################
10#
11# You're probably looking here thinking you need to create some new copy
12# of linux-libc-headers since you have your own custom kernel. To put
13# this simply, you DO NOT.
14#
15# Why? These headers are used to build the libc. If you customise the
16# headers you are customising the libc and the libc becomes machine
17# specific. Most people do not add custom libc extensions to the kernel
18# and have a machine specific libc.
19#
20# But you have some kernel headers you need for some driver? That is fine
21# but get them from STAGING_KERNEL_BUILDDIR where the kernel installs itself.
22# This will make the package using them machine specific but this is much
23# better than having a machine specific C library. This does mean your
24# recipe needs a
25#    do_configure[depends] += "virtual/kernel:do_shared_workdir"
26# but again, that is fine and makes total sense.
27#
28# There can also be a case where your kernel extremely old and you want
29# an older libc ABI for that old kernel. The headers installed by this
30# recipe should still be a standard mainline kernel, not your own custom
31# one.
32#
33# -- RP
34
35LIC_FILES_CHKSUM ?= "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
36
37RECIPE_NO_UPDATE_REASON = "Recipe is updated through a separate process"
38
39python __anonymous () {
40    major = d.getVar("PV").split('.')[0]
41    if major == "3":
42        d.setVar("HEADER_FETCH_VER", "3.0")
43    elif major == "4":
44        d.setVar("HEADER_FETCH_VER", "4.x")
45    elif major == "5":
46        d.setVar("HEADER_FETCH_VER", "5.x")
47    elif major == "6":
48        d.setVar("HEADER_FETCH_VER", "6.x")
49    else:
50        d.setVar("HEADER_FETCH_VER", "2.6")
51}
52
53MAJ_VER = "${@oe.utils.trim_version("${PV}", 2).split('.')[0]}"
54MIN_VER = "${@oe.utils.trim_version("${PV}", 2).split('.')[1]}"
55
56inherit kernel-arch pkgconfig multilib_header
57
58KORG_ARCHIVE_COMPRESSION ?= "xz"
59
60SRC_URI = "${KERNELORG_MIRROR}/linux/kernel/v${HEADER_FETCH_VER}/linux-${PV}.tar.${KORG_ARCHIVE_COMPRESSION}"
61UPSTREAM_CHECK_URI = "https://www.kernel.org/"
62
63S = "${WORKDIR}/linux-${PV}"
64
65EXTRA_OEMAKE = " HOSTCC="${BUILD_CC}" HOSTCPP="${BUILD_CPP}""
66
67do_configure[noexec] = "1"
68
69do_compile[noexec] = "1"
70
71do_install() {
72	oe_runmake headers_install INSTALL_HDR_PATH=${D}${exec_prefix}
73	# Kernel should not be exporting this header
74	rm -f ${D}${exec_prefix}/include/scsi/scsi.h
75
76	# The ..install.cmd conflicts between various configure runs
77	find ${D}${includedir} -name ..install.cmd | xargs rm -f
78}
79
80do_install:append:aarch64 () {
81        do_install_armmultilib
82}
83
84do_install:append:arm () {
85	do_install_armmultilib
86}
87
88do_install:append:armeb () {
89	do_install_armmultilib
90}
91
92do_install_armmultilib () {
93	if [ ${MAJ_VER} -gt 5 ]; then
94		ARM_KVM_HEADER=""
95	else
96		if [ ${MAJ_VER} -eq 5 ] && [ ${MIN_VER} -ge 8 ]; then
97			ARM_KVM_HEADER=""
98		else
99			ARM_KVM_HEADER="asm/kvm.h"
100		fi
101	fi
102	oe_multilib_header asm/auxvec.h asm/bitsperlong.h asm/byteorder.h asm/fcntl.h asm/hwcap.h asm/ioctls.h $ARM_KVM_HEADER asm/kvm_para.h asm/mman.h asm/param.h asm/perf_regs.h asm/bpf_perf_event.h
103	oe_multilib_header asm/posix_types.h asm/ptrace.h  asm/setup.h  asm/sigcontext.h asm/siginfo.h asm/signal.h asm/stat.h  asm/statfs.h asm/swab.h  asm/types.h asm/unistd.h
104}
105
106BBCLASSEXTEND = "nativesdk"
107
108DEV_PKG_DEPENDENCY = ""
109RRECOMMENDS:${PN}-dbg = "${PN}-dev (= ${EXTENDPKGV})"
110
111INHIBIT_DEFAULT_DEPS = "1"
112DEPENDS += "unifdef-native bison-native rsync-native"
113