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libc/glibc: commonalise setting of the minimum supported kernel version

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It will be possible to use that also with eglibc, so this hunk belongs to
the common code.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
This commit is contained in:
Yann E. MORIN" 2011-01-22 22:35:02 +01:00
parent b560936e09
commit a150a97e44
2 changed files with 35 additions and 30 deletions
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36
scripts/build/libc/glibc-eglibc.sh-common
View File

@ -134,7 +134,7 @@ do_libc() {
# We don't need to be conditional on wether the user did set different
# values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
extra_config+=("--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')")
extra_config+=("$(do_libc_min_kernel_config)")
case "${CT_THREADS}" in
nptl) extra_config+=("--with-__thread" "--with-tls");;
@ -252,3 +252,37 @@ do_libc_add_ons_list() {
addons_list="${addons_list%%${sep}}"
echo "${addons_list##${sep}}"
}
# Compute up the minimum supported Linux kernel version
do_libc_min_kernel_config() {
local min_kernel_config
case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
*--enable-kernel*) ;;
*) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
# We can't rely on the kernel version from the configuration,
# because it might not be available if the user uses pre-installed
# headers. On the other hand, both method will have the kernel
# version installed in "usr/include/linux/version.h" in the sys-root.
# Parse that instead of having two code-paths.
version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
CT_Abort "Linux version is unavailable in installed headers files"
fi
version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
|cut -d ' ' -f 3 \
)"
version=$(((version_code>>16)&0xFF))
patchlevel=$(((version_code>>8)&0xFF))
sublevel=$((version_code&0xFF))
min_kernel_config="${version}.${patchlevel}.${sublevel}"
elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
# Trim the fourth part of the linux version, keeping only the first three numbers
min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
|sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')" \
)"
fi
echo "--enable-kernel=${min_kernel_config}"
;;
esac
}

29
scripts/build/libc/glibc.sh
View File

@ -276,32 +276,3 @@ do_libc_add_ons_list() {
# Remove duplicate, leading and trailing separators
echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
}
# Builds up the minimum supported Linux kernel version
do_libc_min_kernel_config() {
local min_kernel_config=
case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
*enable-kernel*) ;;
*) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
# We can't rely on the kernel version from the configuration,
# because it might not be available if the user uses pre-installed
# headers. On the other hand, both method will have the kernel
# version installed in "usr/include/linux/version.h" in the sys-root.
# Parse that instead of having two code-paths.
version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
CT_Abort "Linux version is unavailable in installed headers files"
fi
version_code=$(grep -E LINUX_VERSION_CODE "${version_code_file}" |cut -d ' ' -f 3)
version=$(((version_code>>16)&0xFF))
patchlevel=$(((version_code>>8)&0xFF))
sublevel=$((version_code&0xFF))
min_kernel_config="--enable-kernel=${version}.${patchlevel}.${sublevel}"
elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
# Trim the fourth part of the linux version, keeping only the first three numbers
min_kernel_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL_VERSION} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
fi
;;
esac
echo "${min_kernel_config}"
}