Add detection for kernel major/minor version

diff --git a/configure.ac b/configure.ac
index 8562181111b59ca85c387b6803d258b719635f6d..cac693b987173c4117d2fd3bb1700028a71d27e4 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -16,8 +16,7 @@ AC_SUBST(VERSION)
 
 AC_PROG_CC
 
-#DS_LINUX_2_4()
-DS_LINUX_2_6()
+DS_LINUX()
 
 #ERROR_CFLAGS="-Werror"
 

diff --git a/m4/linux.m4 b/m4/linux.m4
index eb84b33c05d35cf58c8a3834c3a145f500662961..2eafbdc9af87c89bb89b078d2685f10bc0b0a48a 100644 (file)
--- a/m4/linux.m4
+++ b/m4/linux.m4
@@ -1,7 +1,8 @@
 
 
 AC_DEFUN(DS_LINUX_DIR,
-  [AC_ARG_WITH([linuxdir],
+[
+  AC_ARG_WITH([linuxdir],
     [AC_HELP_STRING([--with-linuxdir],
       [specify path to Linux source directory])],
     [LINUX_DIR="${withval}"],
@@ -45,9 +46,36 @@ AC_DEFUN(DS_TRY_LINUX_DIR,
   AC_MSG_RESULT($result)
 ])
 
-AC_DEFUN(DS_LINUX_2_6,
+AC_DEFUN(DS_LINUX,
 [
   DS_LINUX_DIR()
+
+  AC_MSG_CHECKING([Linux version])
+
+  LINUX_VERSION=$(grep UTS_RELEASE ${LINUX_DIR}/include/linux/version.h | \
+       sed 's/[[^"]]*"\(.*\)\{1\}"/\1/')
+
+  AC_MSG_RESULT([$LINUX_VERSION])
+
+  LINUX_VERSION_MAJOR=$(echo ${LINUX_VERSION} | cut -d. -f1)
+  LINUX_VERSION_MINOR=$(echo ${LINUX_VERSION} | cut -d. -f2)
+
+  case $LINUX_VERSION_MAJOR.$LINUX_VERSION_MINOR in
+    2.6)
+      DS_LINUX_2_6()
+      ;;
+    2.[01234])
+      DS_LINUX_2_4()
+      ;;
+    *)
+      AC_MSG_ERROR([Unknown Linux major.minor $LINUX_VERSION_MAJOR.$LINUX_VERSION_MINOR])
+      ;;
+  esac
+
+])
+
+AC_DEFUN(DS_LINUX_2_6,
+[
   AC_MSG_CHECKING(for Linux CFLAGS)
 
   tmpdir="`pwd`/tmp-noicrwa"
@@ -100,7 +128,6 @@ EOF
 
 AC_DEFUN(DS_LINUX_2_4,
 [
-  DS_LINUX_DIR()
   AC_MSG_CHECKING(for Linux CFLAGS)
 
   tmpdir="`pwd`/tmp-noicrwa"