1 # This file declares functions to install the kernel headers for linux
2 # Copyright 2007 Yann E. MORIN
3 # Licensed under the GPL v2. See COPYING in the root of this package
6 [ "${CT_KERNEL}" = "linux" ] || return 0
7 case "${CT_KERNEL_LINUX_HEADERS_SANITISED}" in
8 y) echo "linux-libc-headers-${CT_KERNEL_VERSION}";;
9 *) echo "linux-${CT_KERNEL_VERSION}";;
15 if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then
16 CT_GetFile "${CT_KERNEL_FILE}" \
17 {ftp,http}://ftp.kernel.org/pub/linux/kernel/v2.{6{,/testing},4,2} \
18 http://ep09.pld-linux.org/~mmazur/linux-libc-headers
25 if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then
26 CT_ExtractAndPatch "${CT_KERNEL_FILE}"
31 # Check kernel configuration
32 do_kernel_check_config() {
33 # Only the copied or sanitised headers need a config file.
34 # Pre-existing headers as well as headers_install don't.
35 if [ "${CT_KERNEL_LINUX_NEEDS_CONFIG}" = "y" \
36 -a \( -z "${CT_KERNEL_LINUX_CONFIG_FILE}" \
37 -o ! -r "${CT_KERNEL_LINUX_CONFIG_FILE}" \
40 CT_DoLog WARN "You did not provide a kernel configuration file!"
41 CT_DoLog WARN "I will try to generate one for you, but beware!"
43 CT_DoStep INFO "Building a default configuration file for linux kernel"
45 mkdir -p "${CT_BUILD_DIR}/build-kernel-defconfig"
46 cd "${CT_BUILD_DIR}/build-kernel-defconfig"
47 make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" O=`pwd` \
48 ARCH=${CT_KERNEL_ARCH} defconfig 2>&1 |CT_DoLog ALL
50 CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"
56 # Wrapper to the actual headers install method
58 CT_DoStep INFO "Installing kernel headers"
60 # Special case when using pre-installed headers
61 if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" = "y" ]; then
62 do_kernel_preinstalled
64 # We need to enter this directory to find the kernel version strings
65 cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
66 if [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" != "y" ]; then
67 k_version=`awk '/^VERSION =/ { print $3 }' Makefile`
68 k_patchlevel=`awk '/^PATCHLEVEL =/ { print $3 }' Makefile`
69 k_sublevel=`awk '/^SUBLEVEL =/ { print $3 }' Makefile`
70 k_extraversion=`awk '/^EXTRAVERSION =/ { print $3 }' Makefile`
72 k_version=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 1`
73 k_patchlevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 2`
74 k_sublevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 3`
75 k_extraversion=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 4`
78 case "${k_version}.${k_patchlevel}" in
80 *) CT_Abort "Unsupported kernel version \"linux-${k_version}.${k_patchlevel}\".";;
83 # Kernel version that support verbosity will use this, others will ignore it:
84 V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"
86 if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL}" = "y" ]; then
88 elif [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" = "y" ]; then
90 else [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ];
98 # Install kernel headers using headers_install from kernel sources.
100 CT_DoLog DEBUG "Using kernel's headers_install"
102 mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
103 cd "${CT_BUILD_DIR}/build-kernel-headers"
105 case "${k_version}.${k_patchlevel}" in
106 2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
107 *) CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
110 CT_DoLog EXTRA "Installing kernel headers"
111 make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \
113 ARCH=${CT_KERNEL_ARCH} \
114 INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
116 headers_install 2>&1 |CT_DoLog ALL
118 if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL_CHECK}" = "y" ]; then
119 CT_DoLog EXTRA "Checking installed headers"
120 make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \
122 ARCH=${CT_KERNEL_ARCH} \
123 INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
125 headers_check 2>&1 |CT_DoLog ALL
126 find "${CT_SYSROOT_DIR}" -type f -name '.check*' -exec rm {} \;
130 # Install kernel headers from oldish Mazur's sanitised headers.
131 do_kernel_sanitised() {
132 CT_DoLog EXTRA "Copying sanitised headers"
133 cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
134 cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL
135 cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL
138 # Install kernel headers by plain copy.
140 CT_DoLog DEBUG "Copying plain kernel headers"
141 CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that."
142 CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)."
144 # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.
145 CT_DoLog EXTRA "Preparing kernel headers"
146 case "${k_version}.${k_patchlevel}" in
147 2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
148 cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
149 CT_DoYes "" |make ARCH=${CT_KERNEL_ARCH} oldconfig
150 # 2.4 doesn't follow V=# for verbosity... :-(
151 make ARCH=${CT_KERNEL_ARCH} symlinks include/linux/version.h
153 2.6) mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
154 cd "${CT_BUILD_DIR}/build-kernel-headers"
155 cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
156 CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \
157 O="`pwd`" ${V_OPT} ARCH=${CT_KERNEL_ARCH} \
159 case "${CT_KERNEL_ARCH}" in
160 sh*) # sh does secret stuff in 'make prepare' that can't be
161 # triggered separately, but happily, it doesn't use
162 # target gcc, so we can use it.
163 # Update: this fails on 2.6.11, as it installs
164 # elfconfig.h, which requires target compiler :-(
165 make ${PARALLELMFLAGS} \
166 ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
167 prepare include/linux/version.h
169 arm*|cris*) make ${PARALLELMFLAGS} \
170 ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
171 include/asm include/linux/version.h \
172 include/asm-${CT_KERNEL_ARCH}/.arch
174 mips*) # for linux-2.6, 'make prepare' for mips doesn't
175 # actually create any symlinks. Hope generic is ok.
176 # Note that glibc ignores all -I flags passed in CFLAGS,
177 # so you have to use -isystem.
178 make ${PARALLELMFLAGS} \
179 ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
180 include/asm include/linux/version.h
181 TARGET_CFLAGS="${TARGET_CFLAGS} -isystem ${LINUX_HEADER_DIR}/include/asm-mips/mach-generic"
183 *) make ${PARALLELMFLAGS} \
184 ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
185 include/asm include/linux/version.h
189 esac 2>&1 |CT_DoLog ALL
191 CT_DoLog EXTRA "Copying kernel headers"
192 cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog ALL
193 cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL
194 cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL
197 # Use preinstalled headers (most probably by using make headers_install in a
198 # modified (read: customised) kernel tree). In this case, simply copy
199 # the headers in place
200 do_kernel_preinstalled() {
201 CT_DoLog EXTRA "Copying preinstalled kernel headers"
203 mkdir -p "${CT_SYSROOT_DIR}/usr"
204 cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"
205 cp -rv include "${CT_SYSROOT_DIR}/usr" 2>&1 |CT_DoLog ALL