388 lines
10 KiB
Plaintext
388 lines
10 KiB
Plaintext
AC_DEFUN([ZFS_AC_KERNEL], [
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ver=`uname -r`
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AC_ARG_WITH([linux],
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AS_HELP_STRING([--with-linux=PATH],
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[Path to kernel source]),
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[kernelsrc="$withval"; kernelbuild="$withval"])
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AC_ARG_WITH(linux-obj,
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AS_HELP_STRING([--with-linux-obj=PATH],
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[Path to kernel build objects]),
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[kernelbuild="$withval"])
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AC_MSG_CHECKING([kernel source directory])
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if test -z "$kernelsrc"; then
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kernelbuild=
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sourcelink=/lib/modules/${ver}/source
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buildlink=/lib/modules/${ver}/build
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if test -e $sourcelink; then
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kernelsrc=`(cd $sourcelink; /bin/pwd)`
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fi
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if test -e $buildlink; then
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kernelbuild=`(cd $buildlink; /bin/pwd)`
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fi
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if test -z "$kernelsrc"; then
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kernelsrc=$kernelbuild
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fi
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if test -z "$kernelsrc" -o -z "$kernelbuild"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Please specify the location of the kernel source
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*** with the '--with-linux=PATH' option])
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fi
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fi
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AC_MSG_RESULT([$kernelsrc])
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AC_MSG_CHECKING([kernel build directory])
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AC_MSG_RESULT([$kernelbuild])
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AC_MSG_CHECKING([kernel source version])
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if test -r $kernelbuild/include/linux/version.h &&
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fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
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kernsrcver=`(echo "#include <linux/version.h>";
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echo "kernsrcver=UTS_RELEASE") |
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cpp -I $kernelbuild/include |
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grep "^kernsrcver=" | cut -d \" -f 2`
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elif test -r $kernelbuild/include/linux/utsrelease.h &&
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fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
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kernsrcver=`(echo "#include <linux/utsrelease.h>";
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echo "kernsrcver=UTS_RELEASE") |
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cpp -I $kernelbuild/include |
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grep "^kernsrcver=" | cut -d \" -f 2`
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fi
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if test -z "$kernsrcver"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Cannot determine the version of the linux kernel source.
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*** Please prepare the kernel before running this script])
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fi
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AC_MSG_RESULT([$kernsrcver])
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kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
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LINUX=${kernelsrc}
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LINUX_OBJ=${kernelbuild}
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AC_SUBST(LINUX)
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AC_SUBST(LINUX_OBJ)
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AC_SUBST(kmoduledir)
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])
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AC_DEFUN([ZFS_AC_SPL], [
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AC_ARG_WITH([spl],
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AS_HELP_STRING([--with-spl=PATH],
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[Path to spl source]),
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[splsrc="$withval"; splbuild="$withval"])
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AC_ARG_WITH([spl-obj],
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AS_HELP_STRING([--with-spl-obj=PATH],
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[Path to spl build objects]),
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[splbuild="$withval"])
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AC_MSG_CHECKING([spl source directory])
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if test -z "$splsrc"; then
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splbuild=
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sourcelink=/tmp/`whoami`/spl
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buildlink=/tmp/`whoami`/spl
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if test -e $sourcelink; then
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splsrc=`(cd $sourcelink; /bin/pwd)`
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fi
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if test -e $buildlink; then
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splbuild=`(cd $buildlink; /bin/pwd)`
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fi
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if test -z "$splsrc"; then
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splsrc=$splbuild
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fi
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fi
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if test -z "$splsrc" -o -z "$splbuild"; then
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sourcelink=/lib/modules/${ver}/source
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buildlink=/lib/modules/${ver}/build
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if test -e $sourcelink; then
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splsrc=`(cd $sourcelink; /bin/pwd)`
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fi
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if test -e $buildlink; then
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splbuild=`(cd $buildlink; /bin/pwd)`
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fi
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if test -z "$splsrc"; then
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splsrc=$splbuild
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fi
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if test -z "$splsrc" -o -z "$splbuild"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Please specify the location of the spl source
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*** with the '--with-spl=PATH' option])
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fi
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fi
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AC_MSG_RESULT([$splsrc])
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AC_MSG_CHECKING([spl build directory])
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AC_MSG_RESULT([$splbuild])
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AC_MSG_CHECKING([spl source version])
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if test -r $splbuild/spl_config.h &&
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fgrep -q VERSION $splbuild/spl_config.h; then
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splsrcver=`(echo "#include <spl_config.h>";
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echo "splsrcver=VERSION") |
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cpp -I $splbuild |
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grep "^splsrcver=" | cut -d \" -f 2`
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fi
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if test -z "$splsrcver"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Cannot determine the version of the spl source.
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*** Please prepare the spl source before running this script])
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fi
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AC_MSG_RESULT([$splsrcver])
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AC_MSG_CHECKING([spl Module.symvers])
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if test -r $splbuild/modules/Module.symvers; then
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splsymvers=$splbuild/modules/Module.symvers
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elif test -r $kernelbuild/Module.symvers; then
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splsymvers=$kernelbuild/Module.symvers
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fi
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if test -z "$splsymvers"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Cannot find extra Module.symvers in the spl source.
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*** Please prepare the spl source before running this script])
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fi
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AC_MSG_RESULT([$splsymvers])
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AC_SUBST(splsrc)
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AC_SUBST(splsymvers)
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])
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AC_DEFUN([ZFS_AC_LICENSE], [
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AC_MSG_CHECKING([license])
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AC_MSG_RESULT([CDDL])
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dnl # AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
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dnl # [Define to 1 if module is licensed under the GPL])
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])
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AC_DEFUN([ZFS_AC_DEBUG], [
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AC_MSG_CHECKING([whether debugging is enabled])
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AC_ARG_ENABLE( [debug],
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AS_HELP_STRING([--enable-debug],
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[Enable generic debug support (default off)]),
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[ case "$enableval" in
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yes) zfs_ac_debug=yes ;;
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no) zfs_ac_debug=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
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esac ]
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)
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if test "$zfs_ac_debug" = yes; then
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AC_MSG_RESULT([yes])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG "
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HOSTCFLAGS="${HOSTCFLAGS} -DDEBUG "
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else
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AC_MSG_RESULT([no])
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AC_DEFINE([NDEBUG], [1],
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[Define to 1 to disable debug tracing])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG "
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HOSTCFLAGS="${HOSTCFLAGS} -DNDEBUG "
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fi
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])
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AC_DEFUN([ZFS_AC_CONFIG_SCRIPT], [
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SCRIPT_CONFIG=.script-config
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rm -f ${SCRIPT_CONFIG}
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echo "KERNELSRC=${LINUX}" >>${SCRIPT_CONFIG}
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echo "KERNELBUILD=${LINUX_OBJ}" >>${SCRIPT_CONFIG}
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echo "KERNELSRCVER=$kernsrcver" >>${SCRIPT_CONFIG}
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echo >>${SCRIPT_CONFIG}
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echo "SPLSRC=$splsrc" >>${SCRIPT_CONFIG}
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echo "SPLBUILD=$splbuild" >>${SCRIPT_CONFIG}
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echo "SPLSRCVER=$splsrcver" >>${SCRIPT_CONFIG}
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echo "SPLSYMVERS=$splsymvers" >>${SCRIPT_CONFIG}
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echo >>${SCRIPT_CONFIG}
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echo "ZFSSRC=${TOPDIR}/src" >>${SCRIPT_CONFIG}
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echo "ZFSBUILD=${ZFSDIR}" >>${SCRIPT_CONFIG}
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echo >>${SCRIPT_CONFIG}
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echo "TOPDIR=${TOPDIR}" >>${SCRIPT_CONFIG}
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echo "LIBDIR=${LIBDIR}" >>${SCRIPT_CONFIG}
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echo "CMDDIR=${CMDDIR}" >>${SCRIPT_CONFIG}
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])
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AC_DEFUN([ZFS_AC_CONFIG], [
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TOPDIR=`/bin/pwd`
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BUILDDIR=$ZFS_META_NAME #+$zfsconfig
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ZFSDIR=$TOPDIR/$BUILDDIR
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LIBDIR=$ZFSDIR/lib
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CMDDIR=$ZFSDIR/zcmd
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UNAME=`uname -r | cut -d- -f1`
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AC_SUBST(UNAME)
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AC_SUBST(TOPDIR)
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AC_SUBST(BUILDDIR)
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AC_SUBST(ZFSDIR)
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AC_SUBST(LIBDIR)
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AC_SUBST(CMDDIR)
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AC_SUBST(UNAME)
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AC_ARG_WITH([zfs-config],
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AS_HELP_STRING([--with-config=CONFIG],
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[Config file 'kernel|user|lustre']),
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[zfsconfig="$withval"])
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AC_MSG_CHECKING([zfs config])
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AC_MSG_RESULT([$zfsconfig]);
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case "$zfsconfig" in
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kernel) ZFS_AC_CONFIG_KERNEL ;;
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user) ZFS_AC_CONFIG_USER ;;
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lustre) ZFS_AC_CONFIG_LUSTRE ;;
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*)
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AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$zfsconfig" for --with-config,
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user kernel|user|lustre]) ;;
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esac
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ZFS_AC_CONFIG_SCRIPT
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])
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dnl #
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dnl # ZFS_LINUX_CONFTEST
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dnl #
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AC_DEFUN([ZFS_LINUX_CONFTEST], [
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cat >conftest.c <<_ACEOF
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$1
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_ACEOF
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])
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dnl #
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dnl # ZFS_LANG_PROGRAM(C)([PROLOGUE], [BODY])
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dnl #
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m4_define([ZFS_LANG_PROGRAM], [
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$1
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int
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main (void)
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{
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dnl Do *not* indent the following line: there may be CPP directives.
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dnl Don't move the `;' right after for the same reason.
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$2
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;
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return 0;
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}
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])
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dnl #
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dnl # ZFS_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
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dnl #
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AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [
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m4_ifvaln([$1], [ZFS_LINUX_CONFTEST([$1])])dnl
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rm -f build/conftest.o build/conftest.mod.c build/conftest.ko build/Makefile
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echo "obj-m := conftest.o" >build/Makefile
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dnl AS_IF([AC_TRY_COMMAND(cp conftest.c build && make [$2] CC="$CC" -f $PWD/build/Makefile LINUXINCLUDE="-Iinclude -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" $ARCH_UM SUBDIRS=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
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AS_IF([AC_TRY_COMMAND(cp conftest.c build && make [$2] CC="$CC" LINUXINCLUDE="-Iinclude -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" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
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[$4],
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[_AC_MSG_LOG_CONFTEST
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m4_ifvaln([$5],[$5])dnl])dnl
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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
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])
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dnl #
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dnl # ZFS_LINUX_TRY_COMPILE like AC_TRY_COMPILE
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dnl #
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AC_DEFUN([ZFS_LINUX_TRY_COMPILE],
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[ZFS_LINUX_COMPILE_IFELSE(
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[AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])],
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[modules],
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[test -s build/conftest.o],
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[$3], [$4])
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])
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dnl #
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dnl # ZFS_LINUX_CONFIG
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dnl #
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AC_DEFUN([ZFS_LINUX_CONFIG],
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[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
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ZFS_LINUX_TRY_COMPILE([
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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],[
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#ifndef CONFIG_$1
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#error CONFIG_$1 not #defined
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#endif
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],[
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AC_MSG_RESULT([yes])
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$2
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],[
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AC_MSG_RESULT([no])
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$3
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])
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])
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dnl #
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dnl # ZFS_CHECK_SYMBOL_EXPORT
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dnl # check symbol exported or not
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dnl #
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AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT],
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[AC_MSG_CHECKING([whether symbol $1 is exported])
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grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX/Module.symvers 2>/dev/null
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rc=$?
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if test $rc -ne 0; then
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export=0
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for file in $2; do
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grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX/$file" 2>/dev/null
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rc=$?
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if test $rc -eq 0; then
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export=1
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break;
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fi
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done
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if test $export -eq 0; then
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AC_MSG_RESULT([no])
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$4
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else
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AC_MSG_RESULT([yes])
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$3
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fi
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else
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AC_MSG_RESULT([yes])
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$3
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fi
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])
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dnl #
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dnl # 2.6.x API change
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dnl # bio_end_io_t uses 2 args (size was dropped from prototype)
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dnl #
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AC_DEFUN([ZFS_AC_2ARGS_BIO_END_IO_T],
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[AC_MSG_CHECKING([whether bio_end_io_t wants 2 args])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="-Werror"
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/bio.h>
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],[
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void (*wanted_end_io)(struct bio *, int) = NULL;
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bio_end_io_t *local_end_io;
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local_end_io = wanted_end_io;
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_2ARGS_BIO_END_IO_T, 1,
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[bio_end_io_t wants 2 args])
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],[
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AC_MSG_RESULT(no)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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