configure.in - platform/external/valgrind - Gitiles

 # Process this file with autoconf to produce a configure script.
 AC_INIT(Valgrind, 2.3.0.CVS, valgrind-users@lists.sourceforge.net)
 AC_CONFIG_SRCDIR(coregrind/vg_main.c)
 AM_CONFIG_HEADER(config.h)
 AM_INIT_AUTOMAKE

 AM_MAINTAINER_MODE

 # Checks for programs.
 CFLAGS=""

 AC_PROG_LN_S
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_CXX
 AC_PROG_RANLIB

 # Check for the compiler support
 if test "${GCC}" != "yes" ; then
    AC_MSG_ERROR([Valgrind relies on GCC to be compiled])
 fi

 # figure out where perl lives
 AC_PATH_PROG(PERL, perl)

 # figure out where gdb lives
 AC_PATH_PROG(GDB, gdb)
 # autoheader tries to execute the 3rd string or something;  I get warnings when
 # it's defined.  So just leave it undefined.  --njn 2002-Apr-18
 AC_DEFINE_UNQUOTED(GDB_PATH, "$GDB", "")

 # some older automake's don't have it so try something on our own
 ifdef([AM_PROG_AS],[AM_PROG_AS],
 [
 AS="${CC}"
 AC_SUBST(AS)

 ASFLAGS=""
 AC_SUBST(ASFLAGS)
 ])

 # This variable will collect the individual suppression files
 # depending on the results of autoconf

 DEFAULT_SUPP=""


 # We don't want gcc 2.7
 AC_MSG_CHECKING([for a supported version of gcc])

 gcc_version=`${CC} --version | head -n 1`

 case "${gcc_version}" in
      gcc-2.7.*)
 	AC_MSG_RESULT([no (${gcc_version})])
 	AC_MSG_ERROR([please use a recent (>= gcc-2.95) version of gcc])
 	;;

      *)
 	AC_MSG_RESULT([ok (${gcc_version})])
 	;;
 esac


 # Checks for the platform
 AC_CANONICAL_HOST

 AC_MSG_CHECKING([for a supported CPU])
 AC_SUBST(VG_ARCH)
 AC_SUBST(KICKSTART_BASE)
 AC_SUBST(ARCH_CORE_AM_CFLAGS)
 AC_SUBST(ARCH_TOOL_AM_CFLAGS)

 case "${host_cpu}" in
      i?86)
 	AC_MSG_RESULT([ok (${host_cpu})])
         VG_ARCH="x86"
         KICKSTART_BASE="0xb0000000"
         ARCH_CORE_AM_CFLAGS="-fomit-frame-pointer @PREFERRED_STACK_BOUNDARY@ -DELFSZ=32"
         ARCH_TOOL_AM_CFLAGS="-fomit-frame-pointer @PREFERRED_STACK_BOUNDARY@"
         ;;

      powerpc*)
         AC_MSG_RESULT([no (${host_cpu})])
         VG_ARCH="ppc"
         KICKSTART_BASE="0x70000000"
         ARCH_CORE_AM_CFLAGS="-DELFSZ=32"
         ARCH_TOOL_AM_CFLAGS="-fpic"
         AC_MSG_ERROR([PowerPC not supported. Sorry])
         ;;

      *)
 	AC_MSG_RESULT([no (${host_cpu})])
 	AC_MSG_ERROR([Unsupported host architecture. Sorry])
 	;;
 esac

 AC_MSG_CHECKING([for a supported OS])
 AC_SUBST(VG_OS)

 case "${host_os}" in
      *linux*)
 	AC_MSG_RESULT([ok (${host_os})])
         VG_OS="linux"

         # Ok, this is linux. Check the kernel version
         AC_MSG_CHECKING([for the kernel version])

         kernel=`uname -r`

         case "${kernel}" in
              2.6.*)
         	    AC_MSG_RESULT([2.6 family (${kernel})])
         	    AC_DEFINE([KERNEL_2_6], 1, [Define to 1 if you're using Linux 2.6.x])
         	    ;;

              2.4.*)
         	    AC_MSG_RESULT([2.4 family (${kernel})])
         	    AC_DEFINE([KERNEL_2_4], 1, [Define to 1 if you're using Linux 2.4.x])
         	    ;;

              2.2.*)
         	    AC_MSG_RESULT([2.2 family (${kernel})])
         	    AC_DEFINE([KERNEL_2_2], 1, [Define to 1 if you're using Linux 2.2.x])
         	    ;;

              *)
         	    AC_MSG_RESULT([unsupported (${kernel})])
         	    AC_MSG_ERROR([Valgrind works on kernels 2.2, 2.4, 2.6])
         	    ;;
         esac

         ;;

      *freebsd*)
         AC_MSG_RESULT([ok (${host_os})])
         VG_OS="freebsd"
         ;;

      *)
 	AC_MSG_RESULT([no (${host_os})])
 	AC_MSG_ERROR([Valgrind is operating system specific. Sorry. Please consider doing a port.])
 	;;
 esac

 AC_MSG_CHECKING([for a supported CPU/OS combination])
 AC_SUBST(VG_PLATFORM)

 VG_PLATFORM="$VG_ARCH-$VG_OS"

 case $VG_PLATFORM in
     x86-linux)
         AC_MSG_RESULT([ok (${host_cpu}-${host_os})])
         ;;

     *)
         AC_MSG_RESULT([no (${host_cpu}-${host_os})])
         AC_MSG_ERROR([Valgrind is platform specific. Sorry. Please consider doin
 g a port.])
         ;;
 esac

 AC_SUBST(DEFAULT_SUPP)

 glibc=""

 AC_EGREP_CPP([GLIBC_21], [
 #include <features.h>
 #ifdef __GNU_LIBRARY__
  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 1)
   GLIBC_21
  #endif
 #endif
 ],
 glibc="2.1")

 AC_EGREP_CPP([GLIBC_22], [
 #include <features.h>
 #ifdef __GNU_LIBRARY__
  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2)
   GLIBC_22
  #endif
 #endif
 ],
 glibc="2.2")

 AC_EGREP_CPP([GLIBC_23], [
 #include <features.h>
 #ifdef __GNU_LIBRARY__
  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 3)
   GLIBC_23
  #endif
 #endif
 ],
 glibc="2.3")

 # Ok, this is linux. Check the kernel version
 AC_MSG_CHECKING([the glibc version])

 case "${glibc}" in
      2.1)
 	AC_MSG_RESULT(2.1 family)
 	AC_DEFINE([GLIBC_2_1], 1, [Define to 1 if you're using glibc 2.1.x])
 	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.1.supp"
 	;;

      2.2)
 	AC_MSG_RESULT(2.2 family)
 	AC_DEFINE([GLIBC_2_2], 1, [Define to 1 if you're using glibc 2.2.x])
 	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.2.supp"
 	;;

      2.3)
 	AC_MSG_RESULT(2.3 family)
 	AC_DEFINE([GLIBC_2_3], 1, [Define to 1 if you're using glibc 2.3.x])
 	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.3.supp"
 	;;

      *)
 	AC_MSG_RESULT(unsupported version)
 	AC_MSG_ERROR([Valgrind requires the glibc version 2.1, 2.2 or 2.3])
 	;;
 esac

 # APIs introduced in recent glibc versions

 AC_MSG_CHECKING([whether sched_param has a sched_priority member])
 AC_CACHE_VAL(vg_have_sched_priority,
 [
 AC_TRY_COMPILE([#include <pthread.h>],[
 struct sched_param p; p.sched_priority=1;],
 vg_have_sched_priority=yes,
 vg_have_sched_priority=no)
 ])
 AC_MSG_RESULT($vg_have_sched_priority)
 if test "$vg_have_sched_priority" = yes; then
 AC_DEFINE([HAVE_SCHED_PRIORITY], 1, [pthread / sched_priority exists])
 fi

 AC_MSG_CHECKING([whether nfds_t is defined])
 AC_CACHE_VAL(vg_have_nfds_t,
 [
 AC_TRY_COMPILE([#include <sys/poll.h>],[
 nfds_t i=0;],
 vg_have_nfds_t=yes,
 vg_have_nfds_t=no)
 ])
 AC_MSG_RESULT($vg_have_nfds_t)
 if test "$vg_have_nfds_t" = yes; then
 AC_DEFINE([HAVE_NFDS_T], 1, [nfds_t exists])
 fi

 # try to detect the XFree version
 # JRS 2002-06-17: this is completely bogus because it
 # detects the server version, whereas we need to know the
 # client library version.  So what follows is hacked to
 # use all the X supp files regardless of what is detected.
 # This is really stoooopid and should be fixed properly.

 AC_PATH_X

 if test "${no_x}" != 'yes' ; then

    AC_MSG_CHECKING([X version])

    cat<<EOF > conftest.c
 #include <X11/Xlib.h>

 int main (int argc, char * argv [])
 {
   Display * display = XOpenDisplay (NULL);

   if (display) {
     printf ("%s version=%d\n", ServerVendor (display), VendorRelease (display));
   }

   return 0;
 }
 EOF

    ${CC} -o conftest conftest.c -I${x_includes} -L${x_libraries} -lX11 >&5 2>&1

    if test "$?" != 0 ; then
      AC_MSG_RESULT([cannot compile test program])
    else
      xfree=`./conftest`

      case "${xfree}" in
 	*XFree86*)
 	   case "${xfree}" in
 	      *version=4*)
 		 AC_MSG_RESULT([XFree 4.x family])
 		 AC_DEFINE([XFREE_4], 1, [Define to 1 if you're using XFree 4.x])
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
 		 # haaaaaaack!
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
 		 ;;

 	      *version=3*)
 		 AC_MSG_RESULT([XFree 3.x family])
 		 AC_DEFINE([XFREE_3], 1, [Define to 1 if you're using XFree86 3.x])
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
 		 # haaaaaaack!
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
 		 ;;

 	      *) AC_MSG_RESULT([unknown XFree86 server (${xfree})])
 		 # haaaaaaack!
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
 		 ;;
 	   esac
 	   ;;
         *X.Org*)
 	   case "${xfree}" in
 	      *version=6*)
 		 AC_MSG_RESULT([X.Org 6.x family])
 		 AC_DEFINE([XFREE_4], 1, [Define to 1 if you're using XFree 4.x])
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
 		 # haaaaaaack!
 		 DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
 		 ;;
 	   esac
 	   ;;
 	*) AC_MSG_RESULT([not a XFree86 server])
 	   ;;
      esac

    fi

    rm -f conftest conftest.c
 fi


 # check if the GNU as supports CFI directives
 AC_MSG_CHECKING([if gas accepts .cfi])
 AC_TRY_LINK(, [

 __asm__ __volatile__ (".cfi_startproc\n"
                       ".cfi_adjust_cfa_offset 0x0\n"
                       ".cfi_endproc\n");
 ],
 [
   AC_DEFINE_UNQUOTED([HAVE_GAS_CFI], 1, [Define if your GNU as supports .cfi])
   AC_MSG_RESULT(yes)
 ],
   AC_MSG_RESULT(no)
 )

 # does this compiler support -mpreferred-stack-boundary=2 ?
 AC_MSG_CHECKING([if gcc accepts -mpreferred-stack-boundary])

 safe_CFLAGS=$CFLAGS
 CFLAGS="-mpreferred-stack-boundary=2"

 AC_TRY_COMPILE(, [

 int main () { return 0 ; }

 ],
 [
 PREFERRED_STACK_BOUNDARY="-mpreferred-stack-boundary=2"
 AC_MSG_RESULT([yes])
 ], [
 PREFERRED_STACK_BOUNDARY=""
 AC_MSG_RESULT([no])
 ])
 CFLAGS=$safe_CFLAGS

 AC_SUBST(PREFERRED_STACK_BOUNDARY)


 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/socket.h sys/statfs.h sys/time.h sys/endian.h endian.h termios.h unistd.h utime.h linux/fb.h mqueue.h linux/compiler.h])

 AH_TEMPLATE([HAVE_LINUX_MII_H], [])
 AC_MSG_CHECKING([for linux/mii.h])
 AC_PREPROC_IFELSE([#include <linux/mii.h>],
                    [AC_DEFINE([HAVE_LINUX_MII_H])
                     AC_MSG_RESULT([yes])],
                    [AC_MSG_RESULT([no])])

 # Checks for typedefs, structures, and compiler characteristics.
 AC_TYPE_UID_T
 AC_TYPE_OFF_T
 AC_TYPE_SIZE_T
 AC_HEADER_TIME
 AC_CHECK_TYPES(__pthread_unwind_buf_t,,,[#include <pthread.h>])
 AC_CHECK_TYPES(u16,,,[#include <linux/mii.h>])

 # Checks for library functions.
 AC_FUNC_MEMCMP
 AC_FUNC_MMAP
 AC_TYPE_SIGNAL

 AC_CHECK_FUNCS([floor memchr memset mkdir strchr strdup strpbrk strrchr strstr semtimedop])

 AC_OUTPUT(
    Makefile
    valgrind.spec
    valgrind.pc
    docs/Makefile
    tests/Makefile
    tests/vg_regtest
    tests/unused/Makefile
    include/valgrind.h
    include/Makefile
    include/x86/Makefile
    auxprogs/Makefile
    coregrind/Makefile
    coregrind/demangle/Makefile
    coregrind/docs/Makefile
    coregrind/x86/Makefile
    coregrind/x86-linux/Makefile
    addrcheck/Makefile
    addrcheck/tests/Makefile
    addrcheck/tests/x86/Makefile
    addrcheck/docs/Makefile
    memcheck/Makefile
    memcheck/tests/Makefile
    memcheck/tests/x86/Makefile
    memcheck/docs/Makefile
    cachegrind/Makefile
    cachegrind/x86/Makefile
    cachegrind/tests/Makefile
    cachegrind/tests/x86/Makefile
    cachegrind/docs/Makefile
    cachegrind/cg_annotate
    helgrind/Makefile
    helgrind/tests/Makefile
    helgrind/tests/x86/Makefile
    helgrind/docs/Makefile
    massif/Makefile
    massif/hp2ps/Makefile
    massif/tests/Makefile
    massif/docs/Makefile
    corecheck/Makefile
    corecheck/tests/Makefile
    corecheck/docs/Makefile
    lackey/Makefile
    lackey/tests/Makefile
    lackey/docs/Makefile
    none/Makefile
    none/tests/Makefile
    none/tests/x86/Makefile
    none/docs/Makefile
 )

 cat<<EOF

 Using the following suppressions by default:

       ${DEFAULT_SUPP}
 EOF

 cat<<EOF > default.supp
 # This is a generated file, composed of the following suppression rules:
 #
 #      ${DEFAULT_SUPP}
 #

 EOF

 for file in ${DEFAULT_SUPP} ; do
     cat ${srcdir}/$file >> default.supp
 done
	# Process this file with autoconf to produce a configure script.
	AC_INIT(Valgrind, 2.3.0.CVS, valgrind-users@lists.sourceforge.net)
	AC_CONFIG_SRCDIR(coregrind/vg_main.c)
	AM_CONFIG_HEADER(config.h)
	AM_INIT_AUTOMAKE

	AM_MAINTAINER_MODE

	# Checks for programs.
	CFLAGS=""

	AC_PROG_LN_S
	AC_PROG_CC
	AC_PROG_CPP
	AC_PROG_CXX
	AC_PROG_RANLIB

	# Check for the compiler support
	if test "${GCC}" != "yes" ; then
	AC_MSG_ERROR([Valgrind relies on GCC to be compiled])
	fi

	# figure out where perl lives
	AC_PATH_PROG(PERL, perl)

	# figure out where gdb lives
	AC_PATH_PROG(GDB, gdb)
	# autoheader tries to execute the 3rd string or something; I get warnings when
	# it's defined. So just leave it undefined. --njn 2002-Apr-18
	AC_DEFINE_UNQUOTED(GDB_PATH, "$GDB", "")

	# some older automake's don't have it so try something on our own
	ifdef([AM_PROG_AS],[AM_PROG_AS],
	[
	AS="${CC}"
	AC_SUBST(AS)

	ASFLAGS=""
	AC_SUBST(ASFLAGS)
	])

	# This variable will collect the individual suppression files
	# depending on the results of autoconf

	DEFAULT_SUPP=""


	# We don't want gcc 2.7
	AC_MSG_CHECKING([for a supported version of gcc])

	gcc_version=`${CC} --version \| head -n 1`

	case "${gcc_version}" in
	gcc-2.7.*)
	AC_MSG_RESULT([no (${gcc_version})])
	AC_MSG_ERROR([please use a recent (>= gcc-2.95) version of gcc])
	;;

	*)
	AC_MSG_RESULT([ok (${gcc_version})])
	;;
	esac


	# Checks for the platform
	AC_CANONICAL_HOST

	AC_MSG_CHECKING([for a supported CPU])
	AC_SUBST(VG_ARCH)
	AC_SUBST(KICKSTART_BASE)
	AC_SUBST(ARCH_CORE_AM_CFLAGS)
	AC_SUBST(ARCH_TOOL_AM_CFLAGS)

	case "${host_cpu}" in
	i?86)
	AC_MSG_RESULT([ok (${host_cpu})])
	VG_ARCH="x86"
	KICKSTART_BASE="0xb0000000"
	ARCH_CORE_AM_CFLAGS="-fomit-frame-pointer @PREFERRED_STACK_BOUNDARY@ -DELFSZ=32"
	ARCH_TOOL_AM_CFLAGS="-fomit-frame-pointer @PREFERRED_STACK_BOUNDARY@"
	;;

	powerpc*)
	AC_MSG_RESULT([no (${host_cpu})])
	VG_ARCH="ppc"
	KICKSTART_BASE="0x70000000"
	ARCH_CORE_AM_CFLAGS="-DELFSZ=32"
	ARCH_TOOL_AM_CFLAGS="-fpic"
	AC_MSG_ERROR([PowerPC not supported. Sorry])
	;;

	*)
	AC_MSG_RESULT([no (${host_cpu})])
	AC_MSG_ERROR([Unsupported host architecture. Sorry])
	;;
	esac

	AC_MSG_CHECKING([for a supported OS])
	AC_SUBST(VG_OS)

	case "${host_os}" in
	linux)
	AC_MSG_RESULT([ok (${host_os})])
	VG_OS="linux"

	# Ok, this is linux. Check the kernel version
	AC_MSG_CHECKING([for the kernel version])

	kernel=`uname -r`

	case "${kernel}" in
	2.6.*)
	AC_MSG_RESULT([2.6 family (${kernel})])
	AC_DEFINE([KERNEL_2_6], 1, [Define to 1 if you're using Linux 2.6.x])
	;;

	2.4.*)
	AC_MSG_RESULT([2.4 family (${kernel})])
	AC_DEFINE([KERNEL_2_4], 1, [Define to 1 if you're using Linux 2.4.x])
	;;

	2.2.*)
	AC_MSG_RESULT([2.2 family (${kernel})])
	AC_DEFINE([KERNEL_2_2], 1, [Define to 1 if you're using Linux 2.2.x])
	;;

	*)
	AC_MSG_RESULT([unsupported (${kernel})])
	AC_MSG_ERROR([Valgrind works on kernels 2.2, 2.4, 2.6])
	;;
	esac

	;;

	freebsd)
	AC_MSG_RESULT([ok (${host_os})])
	VG_OS="freebsd"
	;;

	*)
	AC_MSG_RESULT([no (${host_os})])
	AC_MSG_ERROR([Valgrind is operating system specific. Sorry. Please consider doing a port.])
	;;
	esac

	AC_MSG_CHECKING([for a supported CPU/OS combination])
	AC_SUBST(VG_PLATFORM)

	VG_PLATFORM="$VG_ARCH-$VG_OS"

	case $VG_PLATFORM in
	x86-linux)
	AC_MSG_RESULT([ok (${host_cpu}-${host_os})])
	;;

	*)
	AC_MSG_RESULT([no (${host_cpu}-${host_os})])
	AC_MSG_ERROR([Valgrind is platform specific. Sorry. Please consider doin
	g a port.])
	;;
	esac

	AC_SUBST(DEFAULT_SUPP)

	glibc=""

	AC_EGREP_CPP([GLIBC_21], [
	#include <features.h>
	#ifdef __GNU_LIBRARY__
	#if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 1)
	GLIBC_21
	#endif
	#endif
	],
	glibc="2.1")

	AC_EGREP_CPP([GLIBC_22], [
	#include <features.h>
	#ifdef __GNU_LIBRARY__
	#if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2)
	GLIBC_22
	#endif
	#endif
	],
	glibc="2.2")

	AC_EGREP_CPP([GLIBC_23], [
	#include <features.h>
	#ifdef __GNU_LIBRARY__
	#if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 3)
	GLIBC_23
	#endif
	#endif
	],
	glibc="2.3")

	# Ok, this is linux. Check the kernel version
	AC_MSG_CHECKING([the glibc version])

	case "${glibc}" in
	2.1)
	AC_MSG_RESULT(2.1 family)
	AC_DEFINE([GLIBC_2_1], 1, [Define to 1 if you're using glibc 2.1.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.1.supp"
	;;

	2.2)
	AC_MSG_RESULT(2.2 family)
	AC_DEFINE([GLIBC_2_2], 1, [Define to 1 if you're using glibc 2.2.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.2.supp"
	;;

	2.3)
	AC_MSG_RESULT(2.3 family)
	AC_DEFINE([GLIBC_2_3], 1, [Define to 1 if you're using glibc 2.3.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} glibc-2.3.supp"
	;;

	*)
	AC_MSG_RESULT(unsupported version)
	AC_MSG_ERROR([Valgrind requires the glibc version 2.1, 2.2 or 2.3])
	;;
	esac

	# APIs introduced in recent glibc versions

	AC_MSG_CHECKING([whether sched_param has a sched_priority member])
	AC_CACHE_VAL(vg_have_sched_priority,
	[
	AC_TRY_COMPILE([#include <pthread.h>],[
	struct sched_param p; p.sched_priority=1;],
	vg_have_sched_priority=yes,
	vg_have_sched_priority=no)
	])
	AC_MSG_RESULT($vg_have_sched_priority)
	if test "$vg_have_sched_priority" = yes; then
	AC_DEFINE([HAVE_SCHED_PRIORITY], 1, [pthread / sched_priority exists])
	fi

	AC_MSG_CHECKING([whether nfds_t is defined])
	AC_CACHE_VAL(vg_have_nfds_t,
	[
	AC_TRY_COMPILE([#include <sys/poll.h>],[
	nfds_t i=0;],
	vg_have_nfds_t=yes,
	vg_have_nfds_t=no)
	])
	AC_MSG_RESULT($vg_have_nfds_t)
	if test "$vg_have_nfds_t" = yes; then
	AC_DEFINE([HAVE_NFDS_T], 1, [nfds_t exists])
	fi

	# try to detect the XFree version
	# JRS 2002-06-17: this is completely bogus because it
	# detects the server version, whereas we need to know the
	# client library version. So what follows is hacked to
	# use all the X supp files regardless of what is detected.
	# This is really stoooopid and should be fixed properly.

	AC_PATH_X

	if test "${no_x}" != 'yes' ; then

	AC_MSG_CHECKING([X version])

	cat<<EOF > conftest.c
	#include <X11/Xlib.h>

	int main (int argc, char * argv [])
	{
	Display * display = XOpenDisplay (NULL);

	if (display) {
	printf ("%s version=%d\n", ServerVendor (display), VendorRelease (display));
	}

	return 0;
	}
	EOF

	${CC} -o conftest conftest.c -I${x_includes} -L${x_libraries} -lX11 >&5 2>&1

	if test "$?" != 0 ; then
	AC_MSG_RESULT([cannot compile test program])
	else
	xfree=`./conftest`

	case "${xfree}" in
	XFree86)
	case "${xfree}" in
	version=4)
	AC_MSG_RESULT([XFree 4.x family])
	AC_DEFINE([XFREE_4], 1, [Define to 1 if you're using XFree 4.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
	# haaaaaaack!
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
	;;

	version=3)
	AC_MSG_RESULT([XFree 3.x family])
	AC_DEFINE([XFREE_3], 1, [Define to 1 if you're using XFree86 3.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
	# haaaaaaack!
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
	;;

	*) AC_MSG_RESULT([unknown XFree86 server (${xfree})])
	# haaaaaaack!
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
	;;
	esac
	;;
	X.Org)
	case "${xfree}" in
	version=6)
	AC_MSG_RESULT([X.Org 6.x family])
	AC_DEFINE([XFREE_4], 1, [Define to 1 if you're using XFree 4.x])
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-4.supp"
	# haaaaaaack!
	DEFAULT_SUPP="${DEFAULT_SUPP} xfree-3.supp"
	;;
	esac
	;;
	*) AC_MSG_RESULT([not a XFree86 server])
	;;
	esac

	fi

	rm -f conftest conftest.c
	fi


	# check if the GNU as supports CFI directives
	AC_MSG_CHECKING([if gas accepts .cfi])
	AC_TRY_LINK(, [

	__asm__ __volatile__ (".cfi_startproc\n"
	".cfi_adjust_cfa_offset 0x0\n"
	".cfi_endproc\n");
	],
	[
	AC_DEFINE_UNQUOTED([HAVE_GAS_CFI], 1, [Define if your GNU as supports .cfi])
	AC_MSG_RESULT(yes)
	],
	AC_MSG_RESULT(no)
	)

	# does this compiler support -mpreferred-stack-boundary=2 ?
	AC_MSG_CHECKING([if gcc accepts -mpreferred-stack-boundary])

	safe_CFLAGS=$CFLAGS
	CFLAGS="-mpreferred-stack-boundary=2"

	AC_TRY_COMPILE(, [

	int main () { return 0 ; }

	],
	[
	PREFERRED_STACK_BOUNDARY="-mpreferred-stack-boundary=2"
	AC_MSG_RESULT([yes])
	], [
	PREFERRED_STACK_BOUNDARY=""
	AC_MSG_RESULT([no])
	])
	CFLAGS=$safe_CFLAGS

	AC_SUBST(PREFERRED_STACK_BOUNDARY)



	# Checks for header files.
	AC_HEADER_STDC
	AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/socket.h sys/statfs.h sys/time.h sys/endian.h endian.h termios.h unistd.h utime.h linux/fb.h mqueue.h linux/compiler.h])

	AH_TEMPLATE([HAVE_LINUX_MII_H], [])
	AC_MSG_CHECKING([for linux/mii.h])
	AC_PREPROC_IFELSE([#include <linux/mii.h>],
	[AC_DEFINE([HAVE_LINUX_MII_H])
	AC_MSG_RESULT([yes])],
	[AC_MSG_RESULT([no])])

	# Checks for typedefs, structures, and compiler characteristics.
	AC_TYPE_UID_T
	AC_TYPE_OFF_T
	AC_TYPE_SIZE_T
	AC_HEADER_TIME
	AC_CHECK_TYPES(__pthread_unwind_buf_t,,,[#include <pthread.h>])
	AC_CHECK_TYPES(u16,,,[#include <linux/mii.h>])

	# Checks for library functions.
	AC_FUNC_MEMCMP
	AC_FUNC_MMAP
	AC_TYPE_SIGNAL

	AC_CHECK_FUNCS([floor memchr memset mkdir strchr strdup strpbrk strrchr strstr semtimedop])

	AC_OUTPUT(
	Makefile
	valgrind.spec
	valgrind.pc
	docs/Makefile
	tests/Makefile
	tests/vg_regtest
	tests/unused/Makefile
	include/valgrind.h
	include/Makefile
	include/x86/Makefile
	auxprogs/Makefile
	coregrind/Makefile
	coregrind/demangle/Makefile
	coregrind/docs/Makefile
	coregrind/x86/Makefile
	coregrind/x86-linux/Makefile
	addrcheck/Makefile
	addrcheck/tests/Makefile
	addrcheck/tests/x86/Makefile
	addrcheck/docs/Makefile
	memcheck/Makefile
	memcheck/tests/Makefile
	memcheck/tests/x86/Makefile
	memcheck/docs/Makefile
	cachegrind/Makefile
	cachegrind/x86/Makefile
	cachegrind/tests/Makefile
	cachegrind/tests/x86/Makefile
	cachegrind/docs/Makefile
	cachegrind/cg_annotate
	helgrind/Makefile
	helgrind/tests/Makefile
	helgrind/tests/x86/Makefile
	helgrind/docs/Makefile
	massif/Makefile
	massif/hp2ps/Makefile
	massif/tests/Makefile
	massif/docs/Makefile
	corecheck/Makefile
	corecheck/tests/Makefile
	corecheck/docs/Makefile
	lackey/Makefile
	lackey/tests/Makefile
	lackey/docs/Makefile
	none/Makefile
	none/tests/Makefile
	none/tests/x86/Makefile
	none/docs/Makefile
	)

	cat<<EOF

	Using the following suppressions by default:

	${DEFAULT_SUPP}
	EOF

	cat<<EOF > default.supp
	# This is a generated file, composed of the following suppression rules:
	#
	# ${DEFAULT_SUPP}
	#

	EOF

	for file in ${DEFAULT_SUPP} ; do
	cat ${srcdir}/$file >> default.supp
	done