#
-# LB_LINUX_INKERNEL
-#
-# in kernel compilation? (2.5 only)
-#
-AC_DEFUN([LB_LINUX_INKERNEL],
-[AC_MSG_CHECKING([if inkernel build support is requested])
-AC_ARG_ENABLE([inkernel],
- AC_HELP_STRING([--enable-inkernel],
- [set up 2.5 kernel makefiles]),
- [],[enable_inkernel=no])
-AC_MSG_RESULT([$enable_inkernel])
-
-if test x$enable_inkernel = xyes ; then
- echo ln -s `pwd` $LINUX/fs/lustre
- rm $LINUX/fs/lustre
- ln -s `pwd` $LINUX/fs/lustre
- find portals lustre -name Makefile.mk | sed 's/.mk$//' | xargs -n 1 \
- sh -e -x -c '(cp -f $0.mk $0.in)'
-fi
-])
-
-
-#
# LB_LINUX_VERSION
#
# Set things accordingly for a 2.5 kernel
#
AC_DEFUN([LB_LINUX_VERSION],
-[AC_CHECK_FILE([$LINUX/include/linux/namei.h],
+[LB_CHECK_FILE([$LINUX/include/linux/namei.h],
[
linux25="yes"
KMODEXT=".ko"
MODULE_TARGET="SUBDIRS"
if test $linux25 = "yes" ; then
- LB_CONFIG_INKERNEL
-
makerule="$PWD/build"
AC_MSG_CHECKING([for external module build support])
rm -f build/conftest.i
[
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
AC_SUBST(MODULE_TARGET)
-AC_SUBST(LINUX25)
+AC_SUBST(linux25)
AC_SUBST(KMODEXT)
])
[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;
RELEASE="`echo ${LINUXRELEASE} | tr '-' '_'`_`date +%Y%m%d%H%M`"
AC_MSG_RESULT($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_LINUX_PATH
#
AC_ARG_WITH([linux],
AC_HELP_STRING([--with-linux=path],
[set path to Linux source (default=/usr/src/linux)]),
- [LINUX=$with_linux],
+ [
+ if ! [[[ $with_linux = /* ]]]; then
+ AC_MSG_ERROR([You must provide an absolute pathname to the --with-linux= option.])
+ else
+ LINUX=$with_linux
+ fi
+ ],
[LINUX=/usr/src/linux])
AC_MSG_RESULT([$LINUX])
AC_SUBST(LINUX)
+# -------- check for linux --------
+LB_CHECK_FILE([$LINUX],[],
+ [AC_MSG_ERROR([Kernel source $LINUX could not be found.])])
+
# -------- linux objects (for 2.6) --
AC_MSG_CHECKING([for Linux objects dir])
AC_ARG_WITH([linux-obj],
AC_MSG_RESULT([$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=$LINUX_OBJ/.config)])],
[LINUX_CONFIG=$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 README.kernel-source for details.]),
+ [Use a different kernel version header. Consult build/README.kernel-source for details.]),
[KERNEL_SOURCE_HEADER=$with_kernel_source_header])
# ------------ .config exists ----------------
-AC_CHECK_FILE([$LINUX_CONFIG],[],
- [AC_MSG_ERROR([Kernel config could not be found. If you are building from a kernel-source rpm consult README.kernel-source])])
+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 $KERNEL_SOURCE_HEADER = '/boot/kernel.h' ; then
AC_MSG_WARN([Using /boot/kernel.h from RUNNING kernel.])
AC_MSG_WARN([If this is not what you want, use --with-kernel-source-header.])
- AC_MSG_WARN([Consult README.kernel-source for details.])
+ AC_MSG_WARN([Consult build/README.kernel-source for details.])
fi],
- [AC_MSG_ERROR([$KERNEL_SOURCE_HEADER not found. Consult README.kernel-source for details.])])
+ [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_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 README.kernel-source])
- AC_MSG_ERROR([Kernel modules could not be built.])
+ 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 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)])
_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
#
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])],
+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$LINUX/include -I$LINUX_OBJ/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_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], [$6])])
-
-#
-# LB_PROG_LINUX
-#
-# linux tests
-#
-AC_DEFUN([LB_PROG_LINUX],
-[LB_LINUX_PATH
-LB_LINUX_UML
-
-LB_LINUX_CONFIG([MODULES],[],[
- AC_MSG_ERROR([module support is required to build Lustre kernel modules.])
-])
-
-LB_LINUX_CONFIG([MODVERSIONS])
-
-LB_LINUX_CONFIG([PREEMPT],[
- AC_MSG_ERROR([Lustre does not support kernels with preempt enabled.])
-])
-
-LB_LINUX_CONFIG([KALLSYMS],[],[
-if test "x$ARCH_UM" = "x" ; then
- AC_MSG_ERROR([Lustre requires that CONFIG_KALLSYMS is enabled in your kernel.])
-fi
-])
-
-# Portals tests
-LP_PROG_LINUX
-
-# Lustre tests
-LC_PROG_LINUX
-])
-
-#
-# LB_LINUX_CONDITIONALS
+# LB_LINUX_CONFIG_IM
#
-# AM_CONDITIONALS for linux
+# check if a given config option is builtin or as module
#
-AC_DEFUN([LB_LINUX_CONDITIONALS],
-[AM_CONDITIONAL(INKERNEL, test x$enable_inkernel = xyes)
-AM_CONDITIONAL(LINUX25, test x$linux25 = xyes)
-])
-
-#
-# LB_LINUX_STRUCT_PAGE_LIST
-#
-# 2.6.4 no longer has page->list
-#
-AC_DEFUN([LB_LINUX_STRUCT_PAGE_LIST],
-[AC_MSG_CHECKING([if struct page has a list field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
-],[
- struct page page;
- &page.list;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_PAGE_LIST, 1, [struct page has a list field])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LB_LINUX_STRUCT_SIGHAND
-#
-# red hat 2.4 adds sighand to struct task_struct
-#
-AC_DEFUN([LB_LINUX_STRUCT_SIGHAND],
-[AC_MSG_CHECKING([if task_struct has a sighand field])
+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/sched.h>
+#include <linux/autoconf.h>
],[
- struct task_struct p;
- p.sighand = NULL;
+#if !(defined(CONFIG_$1) || defined(CONFIG_$1_MODULE))
+#error CONFIG_$1 and CONFIG_$1_MODULE not #defined
+#endif
],[
- AC_DEFINE(CONFIG_RH_2_4_20, 1, [this kernel contains Red Hat 2.4.20 patches])
- AC_MSG_RESULT([yes])
+AC_MSG_RESULT([yes])
+$2
],[
- AC_MSG_RESULT([no])
+AC_MSG_RESULT([no])
+$3
])
])
#
-# LB_LINUX_FUNC_CPU_ONLINE
+# LB_LINUX_TRY_MAKE
#
-# cpu_online is different in rh 2.4, vanilla 2.4, and 2.6
+# like LB_LINUX_TRY_COMPILE, but with different arguments
#
-AC_DEFUN([LB_LINUX_FUNC_CPU_ONLINE],
-[AC_MSG_CHECKING([if kernel defines cpu_online()])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- cpu_online(0);
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_CPU_ONLINE, 1, [cpu_online found])
-],[
- AC_MSG_RESULT([no])
-])
+AC_DEFUN([LB_LINUX_TRY_MAKE],
+[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_LINUX_TYPE_CPUMASK_T
-#
-# same goes for cpumask_t
+# LB_CONFIG_OFED_BACKPORTS
#
-AC_DEFUN([LB_LINUX_TYPE_CPUMASK_T],
-[AC_MSG_CHECKING([if kernel defines cpumask_t])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- return sizeof (cpumask_t);
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_CPUMASK_T, 1, [cpumask_t found])
-],[
+# 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 $ENABLEO2IB -eq 0; then
AC_MSG_RESULT([no])
-])
-])
-
-#
-# LB_LINUX_FUNC_SHOW_TASK
-#
-# we export show_task(), but not all kernels have it (yet)
-#
-AC_DEFUN([LB_LINUX_FUNC_SHOW_TASK],
-[AC_MSG_CHECKING([if kernel exports show_task])
-have_show_task=0
-for file in ksyms sched ; do
- if grep -q "EXPORT_SYMBOL(show_task)" \
- "$LINUX/kernel/$file.c" 2>/dev/null ; then
- have_show_task=1
- break
- fi
-done
-if test x$have_show_task = x1 ; then
- AC_DEFINE(HAVE_SHOW_TASK, 1, [show_task is exported])
- AC_MSG_RESULT([yes])
else
- AC_MSG_RESULT([no])
+ 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=`echo $BACKPORT_INCLUDES | sed "s#.*/src/ofa_kernel/#$O2IBPATH/#"`
+ EXTRA_LNET_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_LNET_INCLUDE"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ fi
fi
])
-#
-# LB_LINUX_CONFIG_EXT3
-#
-# that ext3 is enabled in the kernel
-#
-AC_DEFUN([LB_LINUX_CONFIG_EXT3],
-[LB_LINUX_CONFIG([EXT3_FS],[],[
- LB_LINUX_CONFIG([EXT3_FS_MODULE],[],[$2])
-])
-LB_LINUX_CONFIG([EXT3_FS_XATTR],[$1],[$3])
-])
-
-#
-# LB_LINUX_FSHOOKS
-#
-# If we have (and can build) fshooks.h
-#
-AC_DEFUN([LB_LINUX_FSHOOKS],
-[AC_MSG_CHECKING([if this compiler can build a SuSE 2.6 kernel])
-# an excerpt from fshooks.h, which doesn't build with fedora's gcc 3.4
-LB_LINUX_TRY_COMPILE([
- /* for the lack of a kernel-wide definition */
- typedef enum {
- false,
- true
- } boolean_t __attribute__((__mode__(__QI__)));
-],[],[
- AC_MSG_RESULT([yes])
+# 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>
],[
- AC_MSG_RESULT([no])
- AC_MSG_WARN([We suggest trying gcc 3.3.x.])
- AC_MSG_WARN([You can set CC=gcc33 before running configure.])
- AC_MSG_ERROR([Your compiler cannot build a SuSE 2.6 kernel.])
-])
-AC_MSG_CHECKING([if fshooks are present])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fshooks.h>
-],[],[
- AC_MSG_RESULT([yes])
-$1
+ int myretval=ENOSYS ;
+ return myretval;
],[
- AC_MSG_RESULT([no])
-$2
-])
-])
-
-#
-# LB_LINUX_STRUCT_KIOBUF
-#
-# rh 2.4.18 has iobuf->dovary, but other kernels do not
-#
-AC_DEFUN([LB_LINUX_STRUCT_KIOBUF],
-[AC_MSG_CHECKING([if struct kiobuf has a dovary field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/iobuf.h>
+ $makerule LUSTRE_KERNEL_TEST=conftest.i
],[
- struct kiobuf iobuf;
- iobuf.dovary = 1;
+ 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_KIOBUF_DOVARY, 1, [struct kiobuf has a dovary field])
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_MODULE_LOADING_SUPPORT, 1,
+ [kernel module loading is possible])
],[
- AC_MSG_RESULT([no])
+ AC_MSG_RESULT(no)
+ AC_MSG_WARN([])
+ AC_MSG_WARN([Kernel module loading support is highly recommended.])
+ AC_MSG_WARN([])
])
])
-#
-# LB_LINUX_FUNC_COND_RESCHED
-#
-# cond_resched() was introduced in 2.4.20
-#
-AC_DEFUN([LB_LINUX_FUNC_COND_RESCHED],
-[AC_MSG_CHECKING([if kernel offers cond_resched])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
+# 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>
],[
- cond_resched();
+ int myretval=ENOSYS ;
+ return myretval;
],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_COND_RESCHED, 1, [cond_resched found])
+ $makerule LUSTRE_KERNEL_TEST=conftest.i
],[
- AC_MSG_RESULT([no])
+ 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_LINUX_FUNC_ZAP_PAGE_RANGE
+# LB_PROG_LINUX
#
-# if zap_page_range() taks a vma arg
+# linux tests
#
-AC_DEFUN([LB_LINUX_FUNC_ZAP_PAGE_RANGE],
-[AC_MSG_CHECKING([if zap_pag_range with vma parameter])
-ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
-if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
- AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
+AC_DEFUN([LB_PROG_LINUX],
+[LB_LINUX_PATH
+LB_LINUX_ARCH
+LB_LINUX_SYMVERFILE
+
+
+LB_LINUX_CONFIG([MODULES],[],[
+ AC_MSG_ERROR([module support is required to build Lustre kernel modules.])
])
-#
-# LB_LINUX_FUNC_PDE
-#
-# if proc_fs.h defines PDE()
-#
-AC_DEFUN([LB_LINUX_FUNC_PDE],
-[AC_MSG_CHECKING([if kernel defines PDE])
-HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
-if test "$HAVE_PDE" != 0 ; then
- AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
+LB_LINUX_CONFIG([MODVERSIONS])
+
+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_FUNC_DIRECT_IO
-#
-# if direct_IO takes a struct file argument
-#
-AC_DEFUN([LB_LINUX_FUNC_DIRECT_IO],
-[AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
-HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
-if test "$HAVE_DIO_FILE" != 0 ; then
- AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
- AC_MSG_RESULT(yes)
-else
- AC_MSG_RESULT(no)
-fi
+# 2.6.28
+LC_MODULE_LOADING
+
+#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
])
#
-# LB_LINUX_HEADER_MM_INLINE
+# LB_LINUX_CONDITIONALS
#
-# RHEL kernels define page_count in mm_inline.h
+# AM_CONDITIONALS for linux
#
-AC_DEFUN([LB_LINUX_HEADER_MM_INLINE],
-[AC_MSG_CHECKING([if kernel has mm_inline.h header])
-LB_LINUX_TRY_COMPILE([
- #include <linux/mm_inline.h>
-],[
- #ifndef page_count
- #error mm_inline.h does not define page_count
- #endif
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_MM_INLINE, 1, [mm_inline found])
-],[
- AC_MSG_RESULT([no])
-])
+AC_DEFUN([LB_LINUX_CONDITIONALS],
+[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
])
#
-# LB_LINUX_STRUCT_INODE
-#
-# if inode->i_alloc_sem exists
+# Like AC_CHECK_HEADER but checks for a kernel-space header
#
-AC_DEFUN([LB_LINUX_STRUCT_INODE],
-[AC_MSG_CHECKING([if struct inode has i_alloc_sem])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- #include <linux/version.h>
-],[
- #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,24))
- #error "down_read_trylock broken before 2.4.24"
- #endif
- struct inode i;
- return (char *)&i.i_alloc_sem - (char *)&i;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_I_ALLOC_SEM, 1, [struct inode has i_alloc_sem])
-],[
- AC_MSG_RESULT([no])
-])
+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