From a150a97e4468caf1ef6167ee3a61b8fbaaac35d8 Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN\"" <yann.morin.1998@anciens.enib.fr>
Date: Sat, 22 Jan 2011 22:35:02 +0100
Subject: 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>

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=${min_kernel_config}"
+            ;;
+    esac
+}
diff --git a/scripts/build/libc/glibc.sh b/scripts/build/libc/glibc.sh
index fc30ada..d06a9a1 100644
--- a/scripts/build/libc/glibc.sh
+++ b/scripts/build/libc/glibc.sh
@@ -276,32 +276,3 @@ do_libc_add_ons_list() {
     # Remove duplicate, leading and trailing separators
     echo "${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}"
-}
-- 
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