579 lines
15 KiB
Plaintext
579 lines
15 KiB
Plaintext
AC_DEFUN([SPL_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 "$kernelbuild"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Please specify the location of the kernel source
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*** with the '--with-kernel=PATH' option])
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fi
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fi
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AC_MSG_RESULT([$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=${kernelbuild}
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AC_SUBST(LINUX)
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AC_SUBST(LINUX_OBJ)
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AC_SUBST(kmoduledir)
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])
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AC_DEFUN([SPL_AC_DEBUG], [
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AC_MSG_CHECKING([whether debugging is enabled])
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AC_ARG_ENABLE( [debug],
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AS_HELP_STRING([--enable-debug],
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[Enable generic debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug=yes ;;
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no) spl_ac_debug=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
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esac ]
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)
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if test "$spl_ac_debug" = yes; then
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AC_MSG_RESULT([yes])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG"
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else
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AC_MSG_RESULT([no])
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AC_DEFINE([NDEBUG], [1],
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[Define to 1 to disable debug tracing])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_KMEM], [
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AC_MSG_CHECKING([whether kmem debugging is enabled])
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AC_ARG_ENABLE( [debug-kmem],
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AS_HELP_STRING([--enable-debug-kmem],
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[Enable kmem debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_kmem=yes ;;
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no) spl_ac_debug_kmem=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kmem]) ;;
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esac ]
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)
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if test "$spl_ac_debug_kmem" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_KMEM], [1],
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[Define to 1 to enable kmem debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_MUTEX], [
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AC_MSG_CHECKING([whether mutex debugging is enabled])
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AC_ARG_ENABLE( [debug-mutex],
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AS_HELP_STRING([--enable-debug-mutex],
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[Enable mutex debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_mutex=yes ;;
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no) spl_ac_debug_mutex=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-mutex]) ;;
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esac ]
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)
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if test "$spl_ac_debug_mutex" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_MUTEX], [1],
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[Define to 1 to enable mutex debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_MUTEX"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_KSTAT], [
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AC_MSG_CHECKING([whether kstat debugging is enabled])
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AC_ARG_ENABLE( [debug-kstat],
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AS_HELP_STRING([--enable-debug-kstat],
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[Enable kstat debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_kstat=yes ;;
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no) spl_ac_debug_kstat=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kstat]) ;;
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esac ]
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)
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if test "$spl_ac_debug_kstat" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_KSTAT], [1],
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[Define to 1 to enable kstat debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KSTAT"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_CALLB], [
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AC_MSG_CHECKING([whether callb debugging is enabled])
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AC_ARG_ENABLE( [debug-callb],
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AS_HELP_STRING([--enable-debug-callb],
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[Enable callb debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_callb=yes ;;
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no) spl_ac_debug_callb=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-callb]) ;;
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esac ]
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)
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if test "$spl_ac_debug_callb" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_CALLB], [1],
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[Define to 1 to enable callb debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_CALLB"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl #
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dnl # SPL_LINUX_CONFTEST
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dnl #
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AC_DEFUN([SPL_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 # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY])
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dnl #
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m4_define([SPL_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 # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
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dnl #
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AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
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m4_ifvaln([$1], [SPL_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 # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE
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dnl #
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AC_DEFUN([SPL_LINUX_TRY_COMPILE],
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[SPL_LINUX_COMPILE_IFELSE(
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[AC_LANG_SOURCE([SPL_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 # SPL_LINUX_CONFIG
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dnl #
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AC_DEFUN([SPL_LINUX_CONFIG],
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[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
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SPL_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 # SPL_CHECK_SYMBOL_EXPORT
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dnl # check symbol exported or not
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dnl #
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AC_DEFUN([SPL_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 # SPL_CHECK_HEADER
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dnl # check whether header exists and define HAVE_$2_HEADER
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dnl #
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AC_DEFUN([SPL_CHECK_HEADER],
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[AC_MSG_CHECKING([whether header $1 exists])
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SPL_LINUX_TRY_COMPILE([
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#include <$1>
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],[
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return 0;
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],[
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AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists])
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AC_MSG_RESULT(yes)
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$3
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],[
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AC_MSG_RESULT(no)
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$4
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])
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])
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dnl #
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dnl # 2.6.x API change
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dnl # check if uintptr_t typedef is defined
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dnl #
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AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
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[AC_MSG_CHECKING([whether kernel defines uintptr_t])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/types.h>
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],[
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uintptr_t *ptr;
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],[
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_UINTPTR_T, 1,
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[kernel defines uintptr_t])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # 2.6.19 API change
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dnl # panic_notifier_list use atomic_notifier operations
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dnl #
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AC_DEFUN([SPL_AC_ATOMIC_PANIC_NOTIFIER],
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[AC_MSG_CHECKING([whether panic_notifier_list is atomic])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/notifier.h>
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#include <linux/kernel.h>
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],[
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struct atomic_notifier_head panic_notifier_list;
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_ATOMIC_PANIC_NOTIFIER, 1,
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[panic_notifier_list is atomic])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.20 API change
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dnl # INIT_WORK use 2 args and not store data inside
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dnl #
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AC_DEFUN([SPL_AC_3ARGS_INIT_WORK],
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[AC_MSG_CHECKING([whether INIT_WORK wants 3 args])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/workqueue.h>
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],[
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struct work_struct work;
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INIT_WORK(&work, NULL, NULL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
|
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[INIT_WORK wants 3 args])
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],[
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AC_MSG_RESULT(no)
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])
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])
|
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|
|
dnl #
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dnl # 2.6.21 api change.
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dnl # 'register_sysctl_table' use only one argument instead of two
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dnl #
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AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL],
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[AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/sysctl.h>
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],[
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return register_sysctl_table(NULL,0);
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],[
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AC_MSG_RESULT(yes)
|
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AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
|
|
[register_sysctl_table() wants 2 args])
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],[
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AC_MSG_RESULT(no)
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])
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])
|
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|
|
dnl #
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dnl # 2.6.x API change
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dnl # Old set_shrinker API replaced with register_shrinker
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dnl #
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AC_DEFUN([SPL_AC_SET_SHRINKER], [
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AC_MSG_CHECKING([whether set_shrinker() available])
|
|
SPL_LINUX_TRY_COMPILE([
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|
#include <linux/mm.h>
|
|
],[
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return set_shrinker(DEFAULT_SEEKS, NULL);
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],[
|
|
AC_MSG_RESULT([yes])
|
|
AC_DEFINE(HAVE_SET_SHRINKER, 1,
|
|
[set_shrinker() available])
|
|
],[
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|
AC_MSG_RESULT([no])
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.x API change
|
|
dnl # struct path entry added to struct nameidata
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
|
|
[AC_MSG_CHECKING([whether struct path used in struct nameidata])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/namei.h>
|
|
],[
|
|
struct nameidata nd;
|
|
|
|
nd.path.mnt = NULL;
|
|
nd.path.dentry = NULL;
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1,
|
|
[struct path used in struct nameidata])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # Custom SPL patch may export this system it is not required
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_TASK_CURR], [
|
|
SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c],
|
|
[AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.x API change
|
|
dnl # Use CTL_UNNUMBERED when binary sysctl is not required
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_CTL_UNNUMBERED],
|
|
[AC_MSG_CHECKING([whether unnumbered sysctl support exists])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/sysctl.h>
|
|
],[
|
|
#ifndef CTL_UNNUMBERED
|
|
#error CTL_UNNUMBERED undefined
|
|
#endif
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_CTL_UNNUMBERED, 1,
|
|
[unnumbered sysctl support exists])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.16 API change.
|
|
dnl # Check if 'fls64()' is available
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_FLS64],
|
|
[AC_MSG_CHECKING([whether fls64() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/bitops.h>
|
|
],[
|
|
return fls64(0);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_FLS64, 1, [fls64() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change, check whether device_create() is available.
|
|
dnl # Device_create() was introduced in 2.6.18 and depricated
|
|
dnl # class_device_create() which was fully removed in 2.6.26.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_DEVICE_CREATE], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[device_create],
|
|
[drivers/base/core.c],
|
|
[AC_DEFINE(HAVE_DEVICE_CREATE, 1,
|
|
[device_create() is available])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.13 API change, check whether class_device_create() is available.
|
|
dnl # Class_device_create() was introduced in 2.6.13 and depricated
|
|
dnl # class_simple_device_add() which was fully removed in 2.6.13.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[class_device_create],
|
|
[drivers/base/class.c],
|
|
[AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
|
|
[class_device_create() is available])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.26 API change, set_normalized_timespec() is exported.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[class_device_create],
|
|
[drivers/base/class.c],
|
|
[AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
|
|
[class_device_create() is available])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.26 API change, set_normalized_timespec() is exported.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[set_normalized_timespec],
|
|
[kernel/time.c],
|
|
[AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
|
|
[set_normalized_timespec() is available as export])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c
|
|
dnl # previously it was available in time.h as an inline.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [
|
|
AC_MSG_CHECKING([whether set_normalized_timespec() is an inline])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/time.h>
|
|
],[
|
|
void set_normalized_timespec(struct timespec *ts,
|
|
time_t sec, long nsec) { }
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
|
|
[set_normalized_timespec() is available as inline])
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change,
|
|
dnl # timespec_sub() inline function available in linux/time.h
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
|
|
AC_MSG_CHECKING([whether timespec_sub() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/time.h>
|
|
],[
|
|
struct timespec a, b, c = { 0 };
|
|
c = timespec_sub(a, b);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6,26 API change
|
|
dnl # Definition of struct fdtable relocated to linux/fdtable.h
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_FDTABLE_HEADER], [
|
|
SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], [])
|
|
])
|