lustre-build-linux.m4 9.09 KiB
#
# LB_LINUX_VERSION
#
# Set things accordingly for a 2.5 kernel
#
AC_DEFUN([LB_LINUX_VERSION],
[LB_CHECK_FILE([$LINUX/include/linux/namei.h],
[
linux25="yes"
KMODEXT=".ko"
],[
KMODEXT=".o"
linux25="no"
])
AC_MSG_CHECKING([if you are using Linux 2.6])
AC_MSG_RESULT([$linux25])
MODULE_TARGET="SUBDIRS"
if test $linux25 = "yes" ; then
makerule="$PWD/build"
AC_MSG_CHECKING([for external module build support])
rm -f build/conftest.i
LB_LINUX_TRY_MAKE([],[],
[$makerule LUSTRE_KERNEL_TEST=conftest.i],
[test -s build/conftest.i],
[
AC_MSG_RESULT([no])
],[
makerule="_module_$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
AC_SUBST(MODULE_TARGET)
AC_SUBST(linux25)
AC_SUBST(KMODEXT)
])
#
# LB_LINUX_RELEASE
#
# get the release version of linux
#
AC_DEFUN([LB_LINUX_RELEASE],
[LINUXRELEASE=
rm -f build/conftest.i
AC_MSG_CHECKING([for Linux release])
if test -s $LINUX_OBJ/include/linux/utsrelease.h ; then
LINUXRELEASEHEADER=utsrelease.h
else
LINUXRELEASEHEADER=version.h
fi
LB_LINUX_TRY_MAKE([
#include <linux/$LINUXRELEASEHEADER>
],[
char *LINUXRELEASE;
LINUXRELEASE=UTS_RELEASE;
],[
$makerule LUSTRE_KERNEL_TEST=conftest.i
],[ test -s build/conftest.i
],[
# LINUXRELEASE="UTS_RELEASE"
eval $(grep "LINUXRELEASE=" build/conftest.i)
],[
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([Could not preprocess test program. Consult config.log for details.])
])
rm -f build/conftest.i
if test x$LINUXRELEASE = x ; then
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([Could not determine Linux release version from linux/version.h.])
fi
AC_MSG_RESULT([$LINUXRELEASE])
AC_SUBST(LINUXRELEASE)
moduledir='/lib/modules/'$LINUXRELEASE/kernel
AC_SUBST(moduledir)
modulefsdir='$(moduledir)/fs/$(PACKAGE)'
AC_SUBST(modulefsdir)
modulenetdir='$(moduledir)/net/$(PACKAGE)'
AC_SUBST(modulenetdir)
# ------------ RELEASE --------------------------------
AC_MSG_CHECKING([for Lustre release])
RELEASE="`echo ${LINUXRELEASE} | tr '-' '_'`_`date +%Y%m%d%H%M`"
AC_MSG_RESULT($RELEASE)
AC_SUBST(RELEASE)
])
#
# LB_LINUX_PATH
#
# Find paths for linux, handling kernel-source rpms
#
AC_DEFUN([LB_LINUX_PATH],
[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=$with_linux],
[LINUX=/usr/src/linux])
AC_MSG_RESULT([$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])
AC_MSG_RESULT([$LINUX_OBJ])
AC_SUBST(LINUX_OBJ)
# -------- check for .config --------
AC_ARG_WITH([linux-config],
[AC_HELP_STRING([--with-linux-config=path],
[set path to Linux .conf (default=$LINUX_OBJ/.config)])],
[LINUX_CONFIG=$with_linux_config],
[LINUX_CONFIG=$LINUX_OBJ/.config])
AC_SUBST(LINUX_CONFIG)
LB_CHECK_FILE([/boot/kernel.h], [KERNEL_SOURCE_HEADER='/boot/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=$with_kernel_source_header])
# ------------ .config exists ----------------
LB_CHECK_FILE([$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? ------------------
LB_CHECK_FILES([$LINUX_OBJ/include/linux/autoconf.h
$LINUX_OBJ/include/linux/version.h
$LINUX/include/linux/config.h],[],
[AC_MSG_ERROR([Run make config in $LINUX.])])
# ------------ rhconfig.h includes runtime-generated bits --
# red hat kernel-source checks
# we know this exists after the check above. if the user
# tarred up the tree and ran make dep etc. in it, then
# version.h gets overwritten with a standard linux one.
if grep rhconfig $LINUX_OBJ/include/linux/version.h >/dev/null ; then
# This is a clean kernel-source tree, we need to
# enable extensive workarounds to get this to build
# modules
LB_CHECK_FILE([$KERNEL_SOURCE_HEADER],
[if test $KERNEL_SOURCE_HEADER = '/boot/kernel.h' ; then
AC_MSG_WARN([Using /boot/kernel.h from RUNNING kernel.])
AC_MSG_WARN([If this is not what you want, use --with-kernel-source-header.])
AC_MSG_WARN([Consult build/README.kernel-source for details.])
fi],
[AC_MSG_ERROR([$KERNEL_SOURCE_HEADER not found. Consult build/README.kernel-source for details.])])
EXTRA_KCFLAGS="-include $KERNEL_SOURCE_HEADER $EXTRA_KCFLAGS"
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_CHECKING([that modules can be built at all])
LB_LINUX_TRY_COMPILE([],[],[
AC_MSG_RESULT([yes])
],[
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 cannot be build.])
])
LB_LINUX_RELEASE
])
#
# LB_LINUX_UML
#
# check for a uml kernel
#
AC_DEFUN([LB_LINUX_UML],
[ARCH_UM=
UML_CFLAGS=
AC_MSG_CHECKING([if you are running user mode linux for $target_cpu])
if test -e $LINUX/include/asm-um ; then
if test X`ls -id $LINUX/include/asm/ 2>/dev/null | awk '{print [$]1}'` = X`ls -id $LINUX/include/asm-um 2>/dev/null | awk '{print [$]1}'` ; then ARCH_UM='ARCH=um'
# see notes in Rules.in
UML_CFLAGS='-O0'
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT([no (asm doesn't point at asm-um)])
fi
else
AC_MSG_RESULT([no (asm-um missing)])
fi
AC_SUBST(ARCH_UM)
AC_SUBST(UML_CFLAGS)
])
# 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_LINUX_COMPILE_IFELSE
#
# like AC_COMPILE_IFELSE
#
AC_DEFUN([LB_LINUX_COMPILE_IFELSE],
[m4_ifvaln([$1], [LB_LINUX_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])],
[$4],
[_AC_MSG_LOG_CONFTEST
m4_ifvaln([$5],[$5])dnl])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_TRY_COMPILE
#
# like AC_TRY_COMPILE
#
AC_DEFUN([LB_LINUX_TRY_COMPILE],
[LB_LINUX_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[$1]], [[$2]])],
[modules],
[test -s build/conftest.o],
[$3], [$4])])
#
# LB_LINUX_CONFIG
#
# check if a given config option is defined
#
AC_DEFUN([LB_LINUX_CONFIG],
[AC_MSG_CHECKING([if Linux was built with CONFIG_$1])
LB_LINUX_TRY_COMPILE([#include <linux/config.h>],[
#ifndef CONFIG_$1
#error CONFIG_$1 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], [$6])])
#
# LB_LINUX_CONFIG_BIG_STACK
#
# check for big stack patch
#
AC_DEFUN([LB_LINUX_CONFIG_BIG_STACK],
[if test "x$ARCH_UM" = "x" -a "x$linux25" = "xno" ; then
case $target_cpu in
i?86 | x86_64)
LB_LINUX_CONFIG([STACK_SIZE_16KB],[],[
LB_LINUX_CONFIG([STACK_SIZE_32KB],[],[
LB_LINUX_CONFIG([STACK_SIZE_64KB],[],[
AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 16KB stack.])
])
])
])
;;
esac
fi
])
#
# LB_PROG_LINUX
#
# linux tests
#
AC_DEFUN([LB_PROG_LINUX],
[LB_LINUX_PATH
LB_LINUX_CONFIG([MODULES],[],[
AC_MSG_ERROR([module support is required to build Lustre kernel modules.])
])
LB_LINUX_CONFIG([MODVERSIONS])
LB_LINUX_CONFIG([PREEMPT],[
AC_MSG_ERROR([Lustre does not support kernels with preempt enabled.])
])
LB_LINUX_CONFIG([KALLSYMS],[],[
if test "x$ARCH_UM" = "x" ; then
AC_MSG_ERROR([Lustre requires that CONFIG_KALLSYMS is enabled in your kernel.])
fi
])
LB_LINUX_CONFIG([KMOD],[],[
AC_MSG_WARN([])
AC_MSG_WARN([Kernel module loading support is highly recommended.])
AC_MSG_WARN([])
])
LB_LINUX_CONFIG([CRYPTO],[],[
AC_MSG_ERROR([Lustre require that CONFIG_CRYPTO is enabled in your kernel.])
])
#LB_LINUX_CONFIG_BIG_STACK
# LNet tests
LN_PROG_LINUX
# Lustre tests
LC_PROG_LINUX
# Portals tests
if test "$PORTALS" ; then
LP_PROG_LINUX
fi
])
#
# LB_LINUX_CONDITIONALS
#
# AM_CONDITIONALS for linux
#
AC_DEFUN([LB_LINUX_CONDITIONALS],
[AM_CONDITIONAL(LINUX25, test x$linux25 = xyes)
])