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author | Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> | 2011-01-22 21:35:02 (GMT) |
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committer | Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> | 2011-01-22 21:35:02 (GMT) |
commit | a150a97e4468caf1ef6167ee3a61b8fbaaac35d8 (patch) | |
tree | 686fd8eec106ae0fe6b58205e05c11f992e72906 /scripts/build/libc/glibc-eglibc.sh-common | |
parent | b560936e0955bffbbc2959f30cddfc0bce41999f (diff) |
libc/glibc: commonalise setting of the minimum supported kernel version
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>
Diffstat (limited to 'scripts/build/libc/glibc-eglibc.sh-common')
-rw-r--r-- | scripts/build/libc/glibc-eglibc.sh-common | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/scripts/build/libc/glibc-eglibc.sh-common b/scripts/build/libc/glibc-eglibc.sh-common index 152d27a..75521cc 100644 --- a/scripts/build/libc/glibc-eglibc.sh-common +++ b/scripts/build/libc/glibc-eglibc.sh-common @@ -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 +} |