diff options
Diffstat (limited to 'scripts/build/kernel_linux.sh')
| -rw-r--r-- | scripts/build/kernel_linux.sh | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/scripts/build/kernel_linux.sh b/scripts/build/kernel_linux.sh new file mode 100644 index 0000000..caf35d1 --- /dev/null +++ b/scripts/build/kernel_linux.sh @@ -0,0 +1,148 @@ +# This file declares functions to install the kernel headers for linux +# Copyright 2007 Yann E. MORIN +# Licensed under the GPL v2. See COPYING in the root of this package + +# Check kernel configuration +do_kernel_check_config() { + CT_DoStep INFO "Checking kernel configuration" + + CT_TestOrAbort "You did not provide a kernel config file!" -n "${CT_KERNEL_LINUX_CONFIG_FILE}" -a -f "${CT_KERNEL_LINUX_CONFIG_FILE}" + + CT_EndStep +} + +# Wrapper to the actual headers install method +do_kernel_headers() { + CT_DoStep INFO "Installing kernel headers" + + # We need to enter this directory to find the kernel version strings + cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}" + if [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" != "y" ]; then + k_version=`awk '/^VERSION =/ { print $3 }' Makefile` + k_patchlevel=`awk '/^PATCHLEVEL =/ { print $3 }' Makefile` + k_sublevel=`awk '/^SUBLEVEL =/ { print $3 }' Makefile` + k_extraversion=`awk '/^EXTRAVERSION =/ { print $3 }' Makefile` + else + k_version=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 1` + k_patchlevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 2` + k_sublevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 3` + k_extraversion=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 4` + fi + + case "${k_version}.${k_patchlevel}" in + 2.2|2.4|2.6) ;; + *) CT_Abort "Unsupported kernel version \"linux-${k_version}.${k_patchlevel}\".";; + esac + + # Kernel version that support verbosity will use this, others will ignore it: + V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}" + + if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL}" = "y" ]; then + do_kernel_install + elif [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" = "y" ]; then + do_kernel_sanitised + else [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ]; + do_kernel_copy + fi + + CT_EndStep +} + +# Install kernel headers using headers_install from kernel sources. +do_kernel_install() { + CT_DoLog EXTRA "Using kernel's headers_install" + + mkdir -p "${CT_BUILD_DIR}/build-kernel-headers" + cd "${CT_BUILD_DIR}/build-kernel-headers" + + case "${k_version}.${k_patchlevel}" in + 2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";; + *) CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";; + esac + + CT_DoLog EXTRA "Configuring kernel headers" + cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config + CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \ + O="${CT_BUILD_DIR}/build-kernel-headers" \ + ${V_OPT} \ + ARCH=${CT_KERNEL_ARCH} oldconfig 2>&1 |CT_DoLog DEBUG + + CT_DoLog EXTRA "Installing kernel headers" + make ARCH=${CT_KERNEL_ARCH} \ + INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \ + ${V_OPT} \ + headers_install 2>&1 |CT_DoLog DEBUG + + CT_DoLog EXTRA "Checking installed headers" + make ARCH=${CT_KERNEL_ARCH} \ + INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \ + ${V_OPT} \ + headers_check 2>&1 |CT_DoLog DEBUG +} + +# Install kernel headers from oldish Mazur's sanitised headers. +do_kernel_sanitised() { + CT_DoLog EXTRA "Copying sanitised headers" + cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}" + cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog DEBUG + cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog DEBUG +} + +# Install kernel headers by plain copy. +do_kernel_copy() { + CT_DoLog EXTRA "Copying plain kernel headers" + CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that." + CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)." + + # 2.2 and 2.4 don't support building out-of-tree. 2.6 does. + CT_DoLog EXTRA "Preparing kernel headers" + case "${k_version}.${k_patchlevel}" in + 2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}" + cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config + CT_DoYes "" |make ARCH=${CT_KERNEL_ARCH} oldconfig + # 2.4 doesn't follow V=# for verbosity... :-( + make ARCH=${CT_KERNEL_ARCH} symlinks include/linux/version.h + ;; + 2.6) mkdir -p "${CT_BUILD_DIR}/build-kernel-headers" + cd "${CT_BUILD_DIR}/build-kernel-headers" + cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config + CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \ + O="`pwd`" ${V_OPT} ARCH=${CT_KERNEL_ARCH} \ + oldconfig + case "${CT_KERNEL_ARCH}" in + sh*) # sh does secret stuff in 'make prepare' that can't be + # triggered separately, but happily, it doesn't use + # target gcc, so we can use it. + # Update: this fails on 2.6.11, as it installs + # elfconfig.h, which requires target compiler :-( + make ${PARALLELMFLAGS} \ + ARCH=${CT_KERNEL_ARCH} ${V_OPT} \ + prepare include/linux/version.h + ;; + arm*|cris*) make ${PARALLELMFLAGS} \ + ARCH=${CT_KERNEL_ARCH} ${V_OPT} \ + include/asm include/linux/version.h \ + include/asm-${CT_KERNEL_ARCH}/.arch + ;; + mips*) # for linux-2.6, 'make prepare' for mips doesn't + # actually create any symlinks. Hope generic is ok. + # Note that glibc ignores all -I flags passed in CFLAGS, + # so you have to use -isystem. + make ${PARALLELMFLAGS} \ + ARCH=${CT_KERNEL_ARCH} ${V_OPT} \ + include/asm include/linux/version.h + TARGET_CFLAGS="${TARGET_CFLAGS} -isystem ${LINUX_HEADER_DIR}/include/asm-mips/mach-generic" + ;; + *) make ${PARALLELMFLAGS} \ + ARCH=${CT_KERNEL_ARCH} ${V_OPT} \ + include/asm include/linux/version.h + ;; + esac + ;; + esac 2>&1 |CT_DoLog DEBUG + + CT_DoLog EXTRA "Copying kernel headers" + cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog DEBUG + cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog DEBUG + cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog DEBUG +} |