# Set things accordingly for a 2.5 kernel
#
AC_DEFUN([LB_LINUX_VERSION],
-[AC_CHECK_FILE([$LINUX/include/linux/namei.h],
+[LB_CHECK_FILE([$LINUX/include/linux/namei.h],
[
linux25="yes"
KMODEXT=".ko"
[
AC_MSG_RESULT([no])
],[
- AC_MSG_RESULT([yes])
makerule="_module_$makerule"
MODULE_TARGET="M"
+ LB_LINUX_TRY_MAKE([],[],
+ [$makerule LUSTRE_KERNEL_TEST=conftest.i],
+ [test -s build/conftest.i],
+ [
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_ERROR([unknown; check config.log for details])
+ ])
])
-
else
makerule="_dir_$PWD/build"
fi
[LINUXRELEASE=
rm -f build/conftest.i
AC_MSG_CHECKING([for Linux release])
+if test -s $LINUX_OBJ/include/linux/utsrelease.h ; then
+ LINUXRELEASEHEADER=utsrelease.h
+else
+ LINUXRELEASEHEADER=version.h
+fi
LB_LINUX_TRY_MAKE([
- #include <linux/version.h>
+ #include <linux/$LINUXRELEASEHEADER>
],[
char *LINUXRELEASE;
LINUXRELEASE=UTS_RELEASE;
AC_MSG_RESULT([$LINUXRELEASE])
AC_SUBST(LINUXRELEASE)
-moduledir='/lib/modules/'$LINUXRELEASE/kernel
+moduledir='/lib/modules/'$LINUXRELEASE/updates/kernel
AC_SUBST(moduledir)
modulefsdir='$(moduledir)/fs/$(PACKAGE)'
# ------------ RELEASE --------------------------------
AC_MSG_CHECKING([for Lustre release])
-RELEASE="`echo ${LINUXRELEASE} | tr '-' '_'`_`date +%Y%m%d%H%M`"
+AC_ARG_WITH([release],
+ AC_HELP_STRING([--with-release=string],
+ [set the release string (default=$kvers_YYYYMMDDhhmm)]),
+ [RELEASE=$withval],
+ RELEASE=""
+ if test -n "$DOWNSTREAM_RELEASE"; then
+ RELEASE="${DOWNSTREAM_RELEASE}_"
+ fi
+ RELEASE="$RELEASE`echo ${LINUXRELEASE} | tr '-' '_'`_$BUILDID")
AC_MSG_RESULT($RELEASE)
AC_SUBST(RELEASE)
+
+# check is redhat/suse kernels
+AC_MSG_CHECKING([that RedHat kernel])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/version.h>
+ ],[
+ #ifndef RHEL_RELEASE_CODE
+ #error "not redhat kernel"
+ #endif
+ ],[
+ RHEL_KENEL="yes"
+ RHEL_KERNEL="yes"
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+])
+
+LB_LINUX_CONFIG([SUSE_KERNEL],[SUSE_KERNEL="yes"],[])
+
])
+# LB_ARG_REPLACE_PATH(PACKAGE, PATH)
+AC_DEFUN([LB_ARG_REPLACE_PATH],[
+ new_configure_args=
+ eval "set x $ac_configure_args"
+ shift
+ for arg; do
+ case $arg in
+ --with-[$1]=*)
+ arg=--with-[$1]=[$2]
+ ;;
+ *\'*)
+ arg=$(printf %s\n ["$arg"] | \
+ sed "s/'/'\\\\\\\\''/g")
+ ;;
+ esac
+ dnl AS_VAR_APPEND([new_configure_args], [" '$arg'"])
+ new_configure_args="$new_configure_args \"$arg\""
+ done
+ ac_configure_args=$new_configure_args
+])
+
+# this is the work-horse of the next function
+AC_DEFUN([__LB_ARG_CANON_PATH], [
+ [$3]=$(readlink -f $with_$2)
+ LB_ARG_REPLACE_PATH([$1], $[$3])
+])
+
+# a front-end for the above function that transforms - and . in the
+# PACKAGE portion of --with-PACKAGE into _ suitable for variable names
+AC_DEFUN([LB_ARG_CANON_PATH], [
+ __LB_ARG_CANON_PATH([$1], m4_translit([$1], [-.], [__]), [$2])
+])
+
+#
#
# LB_LINUX_PATH
#
# Find paths for linux, handling kernel-source rpms
#
AC_DEFUN([LB_LINUX_PATH],
-[AC_MSG_CHECKING([for Linux sources])
+[# prep some default values
+for DEFAULT_LINUX in /lib/modules/$(uname -r)/{source,build} /usr/src/linux; do
+ if readlink -q -e $DEFAULT_LINUX; then
+ break
+ fi
+done
+if test "$DEFAULT_LINUX" = "/lib/modules/$(uname -r)/source"; then
+ PATHS="/lib/modules/$(uname -r)/build"
+fi
+PATHS+=" $DEFAULT_LINUX"
+for DEFAULT_LINUX_OBJ in $PATHS; do
+ if readlink -q -e $DEFAULT_LINUX_OBJ; then
+ break
+ fi
+done
+AC_MSG_CHECKING([for Linux sources])
AC_ARG_WITH([linux],
AC_HELP_STRING([--with-linux=path],
- [set path to Linux source (default=/usr/src/linux)]),
- [LINUX=$with_linux],
- [LINUX=/usr/src/linux])
+ [set path to Linux source (default=/lib/modules/$(uname -r)/{source,build},/usr/src/linux)]),
+ [LB_ARG_CANON_PATH([linux], [LINUX])
+ DEFAULT_LINUX_OBJ=$LINUX],
+ [LINUX=$DEFAULT_LINUX])
AC_MSG_RESULT([$LINUX])
AC_SUBST(LINUX)
+# -------- check for linux --------
+LB_CHECK_FILE([$LINUX],[],
+ [AC_MSG_ERROR([Kernel source $LINUX could not be found.])])
+
# -------- linux objects (for 2.6) --
AC_MSG_CHECKING([for Linux objects dir])
AC_ARG_WITH([linux-obj],
AC_HELP_STRING([--with-linux-obj=path],
- [set path to Linux objects dir (default=$LINUX)]),
- [LINUX_OBJ=$with_linux_obj],
- [LINUX_OBJ=$LINUX])
+ [set path to Linux objects dir (default=/lib/modules/$(uname -r)/build,/usr/src/linux)]),
+ [LB_ARG_CANON_PATH([linux-obj], [LINUX_OBJ])],
+ [LINUX_OBJ=$DEFAULT_LINUX_OBJ])
+
AC_MSG_RESULT([$LINUX_OBJ])
AC_SUBST(LINUX_OBJ)
-# -------- check for .confg --------
+# -------- check for .config --------
AC_ARG_WITH([linux-config],
[AC_HELP_STRING([--with-linux-config=path],
[set path to Linux .conf (default=$LINUX_OBJ/.config)])],
- [LINUX_CONFIG=$with_linux_config],
+ [LB_ARG_CANON_PATH([linux-config], [LINUX_CONFIG])],
[LINUX_CONFIG=$LINUX_OBJ/.config])
AC_SUBST(LINUX_CONFIG)
-AC_CHECK_FILE([/boot/kernel.h],
+LB_CHECK_FILE([/boot/kernel.h],
[KERNEL_SOURCE_HEADER='/boot/kernel.h'],
- [AC_CHECK_FILE([/var/adm/running-kernel.h]),
- [KERNEL_SOURCE_HEADER='/var/adm/running-kernel.h']])
+ [LB_CHECK_FILE([/var/adm/running-kernel.h],
+ [KERNEL_SOURCE_HEADER='/var/adm/running-kernel.h'])])
AC_ARG_WITH([kernel-source-header],
AC_HELP_STRING([--with-kernel-source-header=path],
[Use a different kernel version header. Consult build/README.kernel-source for details.]),
- [KERNEL_SOURCE_HEADER=$with_kernel_source_header])
+ [LB_ARG_CANON_PATH([kernel-source-header], [KERNEL_SOURCE_HEADER])])
# ------------ .config exists ----------------
-AC_CHECK_FILE([$LINUX_CONFIG],[],
+LB_CHECK_FILE([$LINUX_CONFIG],[],
[AC_MSG_ERROR([Kernel config could not be found. If you are building from a kernel-source rpm consult build/README.kernel-source])])
# ----------- make dep run? ------------------
-AC_CHECK_FILES([$LINUX_OBJ/include/linux/autoconf.h
- $LINUX_OBJ/include/linux/version.h
- $LINUX/include/linux/config.h],[],
+# at 2.6.19 # $LINUX/include/linux/config.h is removed
+# and at more old has only one line
+# include <autoconf.h>
+LB_CHECK_FILE([$LINUX_OBJ/include/linux/autoconf.h],[],
+ [AC_MSG_ERROR([Run make config in $LINUX.])])
+LB_CHECK_FILE([$LINUX_OBJ/include/linux/version.h],[],
[AC_MSG_ERROR([Run make config in $LINUX.])])
# ------------ rhconfig.h includes runtime-generated bits --
# This is a clean kernel-source tree, we need to
# enable extensive workarounds to get this to build
# modules
- AC_CHECK_FILE([$KERNEL_SOURCE_HEADER],
+ LB_CHECK_FILE([$KERNEL_SOURCE_HEADER],
[if test $KERNEL_SOURCE_HEADER = '/boot/kernel.h' ; then
AC_MSG_WARN([Using /boot/kernel.h from RUNNING kernel.])
AC_MSG_WARN([If this is not what you want, use --with-kernel-source-header.])
fi
# this is needed before we can build modules
+LB_LINUX_UML
LB_LINUX_VERSION
# --- check that we can build modules at all
AC_MSG_RESULT([no])
AC_MSG_WARN([Consult config.log for details.])
AC_MSG_WARN([If you are trying to build with a kernel-source rpm, consult build/README.kernel-source])
- AC_MSG_ERROR([Kernel modules could not be built.])
+ AC_MSG_ERROR([Kernel modules cannot be built.])
])
LB_LINUX_RELEASE
+]) # end of LB_LINUX_PATH
+
+# LB_LINUX_SYMVERFILE
+# SLES 9 uses a different name for this file - unsure about vanilla kernels
+# around this version, but it matters for servers only.
+AC_DEFUN([LB_LINUX_SYMVERFILE],
+ [AC_MSG_CHECKING([name of module symbol version file])
+ if grep -q Modules.symvers $LINUX/scripts/Makefile.modpost ; then
+ SYMVERFILE=Modules.symvers
+ else
+ SYMVERFILE=Module.symvers
+ fi
+ AC_MSG_RESULT($SYMVERFILE)
+ AC_SUBST(SYMVERFILE)
+])
+
+#
+#
+# LB_LINUX_MODPOST
+#
+# Find modpost and check it
+#
+AC_DEFUN([LB_LINUX_MODPOST],
+[
+# Find the modpost utility
+LB_CHECK_FILE([$LINUX_OBJ/scripts/mod/modpost],
+ [MODPOST=$LINUX_OBJ/scripts/mod/modpost],
+ [LB_CHECK_FILE([$LINUX_OBJ/scripts/modpost],
+ [MODPOST=$LINUX_OBJ/scripts/modpost],
+ AC_MSG_ERROR([modpost not found.])
+ )]
+)
+AC_SUBST(MODPOST)
+
+# Ensure it can run
+AC_MSG_CHECKING([if modpost can be run])
+if $MODPOST ; then
+ AC_MSG_RESULT([yes])
+else
+ AC_MSG_ERROR([modpost can not be run.])
+fi
+
+# Check if modpost supports (and therefore requires) -m
+AC_MSG_CHECKING([if modpost supports -m])
+if $MODPOST -m 2>/dev/null ; then
+ AC_MSG_RESULT([yes])
+ MODPOST_ARGS=-m
+else
+ AC_MSG_RESULT([no])
+ MODPOST_ARGS=""
+fi
+AC_SUBST(MODPOST_ARGS)
])
#
UML_CFLAGS='-O0'
AC_MSG_RESULT(yes)
else
- AC_MSG_RESULT([no (asm doesn't point at asm-um)])
+ AC_MSG_RESULT([no])
fi
else
AC_MSG_RESULT([no (asm-um missing)])
# these are like AC_TRY_COMPILE, but try to build modules against the
# kernel, inside the build directory
-#
-# LB_LINUX_CONFTEST
-#
-# create a conftest.c file
-#
-AC_DEFUN([LB_LINUX_CONFTEST],
-[cat >conftest.c <<_ACEOF
-$1
-_ACEOF
-])
+# LB_LANG_PROGRAM(C)([PROLOGUE], [BODY])
+# --------------------------------------
+m4_define([LB_LANG_PROGRAM],
+[$1
+int
+main (void)
+{
+dnl Do *not* indent the following line: there may be CPP directives.
+dnl Don't move the `;' right after for the same reason.
+$2
+ ;
+ return 0;
+}])
#
# LB_LINUX_COMPILE_IFELSE
# like AC_COMPILE_IFELSE
#
AC_DEFUN([LB_LINUX_COMPILE_IFELSE],
-[m4_ifvaln([$1], [LB_LINUX_CONFTEST([$1])])dnl
+[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
rm -f build/conftest.o build/conftest.mod.c build/conftest.ko
-AS_IF([AC_TRY_COMMAND(cp conftest.c build && make [$2] CC="$CC" -f $PWD/build/Makefile LUSTRE_LINUX_CONFIG=$LINUX_CONFIG -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM $MODULE_TARGET=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
+AS_IF([AC_TRY_COMMAND(cp conftest.c build && make -d [$2] ${LD:+"LD=$LD"} CC="$CC" -f $PWD/build/Makefile LUSTRE_LINUX_CONFIG=$LINUX_CONFIG LINUXINCLUDE="$EXTRA_LNET_INCLUDE -I$LINUX/arch/`uname -m|sed -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/'`/include -I$LINUX_OBJ/include -I$LINUX/include -I$LINUX_OBJ/include2 -include include/linux/autoconf.h" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM $MODULE_TARGET=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
[$4],
[_AC_MSG_LOG_CONFTEST
-m4_ifvaln([$5],[$5])dnl])dnl
+m4_ifvaln([$5],[$5])dnl])
rm -f build/conftest.o build/conftest.mod.c build/conftest.mod.o build/conftest.ko m4_ifval([$1], [build/conftest.c conftest.c])[]dnl
])
#
+# LB_LINUX_ARCH
+#
+# Determine the kernel's idea of the current architecture
+#
+AC_DEFUN([LB_LINUX_ARCH],
+ [AC_MSG_CHECKING([Linux kernel architecture])
+ AS_IF([rm -f $PWD/build/arch
+ make -s --no-print-directory echoarch -f $PWD/build/Makefile \
+ LUSTRE_LINUX_CONFIG=$LINUX_CONFIG -C $LINUX $ARCH_UM \
+ ARCHFILE=$PWD/build/arch && LINUX_ARCH=`cat $PWD/build/arch`],
+ [AC_MSG_RESULT([$LINUX_ARCH])],
+ [AC_MSG_ERROR([Could not determine the kernel architecture.])])
+ rm -f build/arch])
+
+#
# LB_LINUX_TRY_COMPILE
#
# like AC_TRY_COMPILE
#
AC_DEFUN([LB_LINUX_TRY_COMPILE],
[LB_LINUX_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[$1]], [[$2]])],
+ [AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])],
[modules],
[test -s build/conftest.o],
[$3], [$4])])
#
AC_DEFUN([LB_LINUX_CONFIG],
[AC_MSG_CHECKING([if Linux was built with CONFIG_$1])
-LB_LINUX_TRY_COMPILE([#include <linux/config.h>],[
+LB_LINUX_TRY_COMPILE([
+#include <linux/autoconf.h>
+],[
#ifndef CONFIG_$1
#error CONFIG_$1 not #defined
#endif
])
#
+# LB_LINUX_CONFIG_IM
+#
+# check if a given config option is builtin or as module
+#
+AC_DEFUN([LB_LINUX_CONFIG_IM],
+[AC_MSG_CHECKING([if Linux was built with CONFIG_$1 in or as module])
+LB_LINUX_TRY_COMPILE([
+#include <linux/autoconf.h>
+],[
+#if !(defined(CONFIG_$1) || defined(CONFIG_$1_MODULE))
+#error CONFIG_$1 and CONFIG_$1_MODULE not #defined
+#endif
+],[
+AC_MSG_RESULT([yes])
+$2
+],[
+AC_MSG_RESULT([no])
+$3
+])
+])
+
+#
# LB_LINUX_TRY_MAKE
#
# like LB_LINUX_TRY_COMPILE, but with different arguments
#
AC_DEFUN([LB_LINUX_TRY_MAKE],
-[LB_LINUX_COMPILE_IFELSE([AC_LANG_PROGRAM([[$1]], [[$2]])], [$3], [$4], [$5], [$6])])
+[LB_LINUX_COMPILE_IFELSE([AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])], [$3], [$4], [$5], [$6])])
+
+#
+# LB_LINUX_CONFIG_BIG_STACK
+#
+# check for big stack patch
+#
+AC_DEFUN([LB_LINUX_CONFIG_BIG_STACK],
+[if test "x$ARCH_UM" = "x" -a "x$linux25" = "xno" ; then
+ case $target_cpu in
+ i?86 | x86_64)
+ LB_LINUX_CONFIG([STACK_SIZE_16KB],[],[
+ LB_LINUX_CONFIG([STACK_SIZE_32KB],[],[
+ LB_LINUX_CONFIG([STACK_SIZE_64KB],[],[
+ AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 16KB stack.])
+ ])
+ ])
+ ])
+ ;;
+ esac
+fi
+])
+
+#
+# LB_CONFIG_OFED_BACKPORTS
+#
+# include any OFED backport headers in all compile commands
+# NOTE: this does only include the backport paths, not the OFED headers
+# adding the OFED headers is done in the lnet portion
+AC_DEFUN([LB_CONFIG_OFED_BACKPORTS],
+[AC_MSG_CHECKING([whether to use any OFED backport headers])
+# set default
+AC_ARG_WITH([o2ib],
+ AC_HELP_STRING([--with-o2ib=path],
+ [build o2iblnd against path]),
+ [
+ case $with_o2ib in
+ yes) O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
+ ENABLEO2IB=2
+ ;;
+ no) ENABLEO2IB=0
+ ;;
+ *) O2IBPATHS=$with_o2ib
+ ENABLEO2IB=3
+ ;;
+ esac
+ ],[
+ O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
+ ENABLEO2IB=1
+ ])
+if test $ENABLEO2IB -eq 0; then
+ AC_MSG_RESULT([no])
+else
+ o2ib_found=false
+ for O2IBPATH in $O2IBPATHS; do
+ if test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
+ -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
+ -f ${O2IBPATH}/include/rdma/ib_verbs.h -a \
+ -f ${O2IBPATH}/include/rdma/ib_fmr_pool.h \); then
+ o2ib_found=true
+ break
+ fi
+ done
+ if ! $o2ib_found; then
+ AC_MSG_RESULT([no])
+ case $ENABLEO2IB in
+ 1) ;;
+ 2) AC_MSG_ERROR([kernel OpenIB gen2 headers not present]);;
+ 3) AC_MSG_ERROR([bad --with-o2ib path]);;
+ *) AC_MSG_ERROR([internal error]);;
+ esac
+ else
+ if test -f $O2IBPATH/config.mk; then
+ . $O2IBPATH/config.mk
+ elif test -f $O2IBPATH/ofed_patch.mk; then
+ . $O2IBPATH/ofed_patch.mk
+ fi
+ if test -n "$BACKPORT_INCLUDES"; then
+ OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
+ EXTRA_LNET_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_LNET_INCLUDE"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ fi
+fi
+])
+
+# LC_MODULE_LOADING
+# after 2.6.28 CONFIG_KMOD is removed, and only CONFIG_MODULES remains
+# so we test if request_module is implemented or not
+AC_DEFUN([LC_MODULE_LOADING],
+[AC_MSG_CHECKING([if kernel module loading is possible])
+LB_LINUX_TRY_MAKE([
+ #include <linux/kmod.h>
+],[
+ int myretval=ENOSYS ;
+ return myretval;
+],[
+ $makerule LUSTRE_KERNEL_TEST=conftest.i
+],[
+ grep request_module build/conftest.i | grep -v `grep "int myretval=" build/conftest.i | cut -d= -f2 | cut -d" " -f1` >/dev/null
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_MODULE_LOADING_SUPPORT, 1,
+ [kernel module loading is possible])
+],[
+ AC_MSG_RESULT(no)
+ AC_MSG_WARN([])
+ AC_MSG_WARN([Kernel module loading support is highly recommended.])
+ AC_MSG_WARN([])
+])
+])
+
+# LC_MODULE_LOADING
+# after 2.6.28 CONFIG_KMOD is removed, and only CONFIG_MODULES remains
+# so we test if request_module is implemented or not
+AC_DEFUN([LC_MODULE_LOADING],
+[AC_MSG_CHECKING([if kernel module loading is possible])
+LB_LINUX_TRY_MAKE([
+ #include <linux/kmod.h>
+],[
+ int myretval=ENOSYS ;
+ return myretval;
+],[
+ $makerule LUSTRE_KERNEL_TEST=conftest.i
+],[
+ grep request_module build/conftest.i | grep -v `grep "int myretval=" build/conftest.i | cut -d= -f2 | cut -d" " -f1` >/dev/null
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_MODULE_LOADING_SUPPORT, 1,
+ [kernel module loading is possible])
+],[
+ AC_MSG_RESULT(no)
+ AC_MSG_WARN([])
+ AC_MSG_WARN([Kernel module loading support is highly recommended.])
+ AC_MSG_WARN([])
+])
+])
#
# LB_PROG_LINUX
#
AC_DEFUN([LB_PROG_LINUX],
[LB_LINUX_PATH
-LB_LINUX_UML
+LB_LINUX_ARCH
+LB_LINUX_SYMVERFILE
+
LB_LINUX_CONFIG([MODULES],[],[
AC_MSG_ERROR([module support is required to build Lustre kernel modules.])
LB_LINUX_CONFIG([MODVERSIONS])
-LB_LINUX_CONFIG([PREEMPT],[
- AC_MSG_ERROR([Lustre does not support kernels with preempt enabled.])
-])
-
LB_LINUX_CONFIG([KALLSYMS],[],[
if test "x$ARCH_UM" = "x" ; then
AC_MSG_ERROR([Lustre requires that CONFIG_KALLSYMS is enabled in your kernel.])
fi
])
-# Portals tests
-LP_PROG_LINUX
+# 2.6.28
+LC_MODULE_LOADING
-# Lustre tests
-LC_PROG_LINUX
+#LB_LINUX_CONFIG_BIG_STACK
+
+# it's ugly to be doing anything with OFED outside of the lnet module, but
+# this has to be done here so that the backports path is set before all of
+# the LN_PROG_LINUX checks are done
+LB_CONFIG_OFED_BACKPORTS
])
#
# AM_CONDITIONALS for linux
#
AC_DEFUN([LB_LINUX_CONDITIONALS],
-[AM_CONDITIONAL(INKERNEL, test x$enable_inkernel = xyes)
-AM_CONDITIONAL(LINUX25, test x$linux25 = xyes)
+[AM_CONDITIONAL(LINUX25, test x$linux25 = xyes)
+])
+
+
+#
+# LB_CHECK_SYMBOL_EXPORT
+# check symbol exported or not
+# $1 - symbol
+# $2 - file(s) for find.
+# $3 - do 'yes'
+# $4 - do 'no'
+#
+# 2.6 based kernels - put modversion info into $LINUX/Module.modvers
+# or check
+AC_DEFUN([LB_CHECK_SYMBOL_EXPORT],
+[AC_MSG_CHECKING([if Linux was built with symbol $1 exported])
+grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX/$SYMVERFILE 2>/dev/null
+rc=$?
+if test $rc -ne 0; then
+ export=0
+ for file in $2; do
+ grep -q -E "EXPORT_SYMBOL.*\($1\)" "$LINUX/$file" 2>/dev/null
+ rc=$?
+ if test $rc -eq 0; then
+ export=1
+ break;
+ fi
+ done
+ if test $export -eq 0; then
+ AC_MSG_RESULT([no])
+ $4
+ else
+ AC_MSG_RESULT([yes])
+ $3
+ fi
+else
+ AC_MSG_RESULT([yes])
+ $3
+fi
+])
+
+#
+# Like AC_CHECK_HEADER but checks for a kernel-space header
+#
+m4_define([LB_CHECK_LINUX_HEADER],
+[AS_VAR_PUSHDEF([ac_Header], [ac_cv_header_$1])dnl
+AC_CACHE_CHECK([for $1], ac_Header,
+ [LB_LINUX_COMPILE_IFELSE([LB_LANG_PROGRAM([@%:@include <$1>])],
+ [modules],
+ [test -s build/conftest.o],
+ [AS_VAR_SET(ac_Header, [yes])],
+ [AS_VAR_SET(ac_Header, [no])])])
+AS_IF([test AS_VAR_GET(ac_Header) = yes], [$2], [$3])[]dnl
+AS_VAR_POPDEF([ac_Header])dnl
])
git://git.whamcloud.com / fs / lustre-release.git / blobdiff