Subversion Repositories openrisc_2011-10-31

dnl Process this file with autoconf to produce a configure script.

sinclude(../config/enable.m4)

sinclude(../config/tls.m4)

sinclude(../config/acx.m4)

sinclude(../config/no-executables.m4)

sinclude(../config/override.m4)

AC_PREREQ(2.64)

AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])

AC_CONFIG_SRCDIR([static-object.mk])

AC_ARG_WITH(target-subdir,

[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])

AC_ARG_WITH(cross-host,

[  --with-cross-host=HOST           Configuring with a cross compiler])

AC_ARG_WITH(ld,

[  --with-ld               arrange to use the specified ld (full pathname)])

if test "${srcdir}" = "."; then

  if test -n "${with_build_subdir}"; then

    libgcc_topdir="${srcdir}/../.."

    with_target_subdir=

  elif test -z "${with_target_subdir}"; then

    libgcc_topdir="${srcdir}/.."

  else

    if test "${with_target_subdir}" != "."; then

      libgcc_topdir="${srcdir}/${with_multisrctop}../.."

    else

      libgcc_topdir="${srcdir}/${with_multisrctop}.."

    fi

  fi

else

  libgcc_topdir="${srcdir}/.."

fi

AC_SUBST(libgcc_topdir)

AC_CONFIG_AUX_DIR($libgcc_topdir)

AC_ARG_ENABLE(shared,

[  --disable-shared        don't provide a shared libgcc],

[

  case $enable_shared in

  yes | no) ;;

  *)

    enable_shared=no

    IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

    for pkg in $enableval; do

      if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then

        enable_shared=yes

      fi

    done

    IFS="$ac_save_ifs"

    ;;

  esac

], [enable_shared=yes])

AC_SUBST(enable_shared)

AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])

AC_ARG_ENABLE(version-specific-runtime-libs,

[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],

[case "$enableval" in

 yes) version_specific_libs=yes ;;

 no)  version_specific_libs=no ;;

 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;

 esac],

[version_specific_libs=no])

AC_MSG_RESULT($version_specific_libs)

AC_ARG_WITH(slibdir,

[  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],

slibdir="$with_slibdir",

if test "${version_specific_libs}" = yes; then

  slibdir='$(libsubdir)'

elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then

  slibdir='$(exec_prefix)/$(host_noncanonical)/lib'

else

  slibdir='$(libdir)'

fi)

AC_SUBST(slibdir)

# Command-line options.

# Very limited version of AC_MAINTAINER_MODE.

AC_ARG_ENABLE([maintainer-mode],

  [AC_HELP_STRING([--enable-maintainer-mode],

                 [enable make rules and dependencies not useful (and

                  sometimes confusing) to the casual installer])],

  [case ${enable_maintainer_mode} in

     yes) MAINT='' ;;

     no) MAINT='#' ;;

     *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;

   esac

   maintainer_mode=${enableval}],

  [MAINT='#'])

AC_SUBST([MAINT])dnl

AC_PROG_INSTALL

AC_PROG_AWK

# We need awk; bail out if it's missing.

case ${AWK} in

  "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;

esac

AC_CANONICAL_HOST

ACX_NONCANONICAL_HOST

GCC_TOPLEV_SUBDIRS

dnl These must be called before AM_PROG_LIBTOOL, because it may want

dnl to call AC_CHECK_PROG.

AC_CHECK_TOOL(AR, ar)

AC_CHECK_TOOL(LIPO, lipo, :)

AC_CHECK_TOOL(NM, nm)

AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_CHECK_TOOL(STRIP, strip, :)

AC_PROG_LN_S

GCC_NO_EXECUTABLES

AC_PROG_CC

AC_PROG_CPP_WERROR

# Check for decimal float support.

AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],

               [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes],

                                  [libgcc_cv_dfp=no])])

decimal_float=$libgcc_cv_dfp

AC_SUBST(decimal_float)

AC_ARG_ENABLE(decimal-float,

[  --enable-decimal-float={no,yes,bid,dpd}

                        enable decimal float extension to C.  Selecting 'bid'

                        or 'dpd' choses which decimal floating point format

                        to use],

[

  case $enable_decimal_float in

    yes | no | bid | dpd) ;;

    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.

Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;

  esac

],

[

  case $host in

    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)

      enable_decimal_float=yes

      ;;

    *)

      enable_decimal_float=no

      ;;

  esac

])

# x86's use BID format instead of DPD

if test x$enable_decimal_float = xyes; then

  case $host in

    i?86*-*-linux* | x86_64*-*-linux*)

      enable_decimal_float=bid

      ;;

    *)

      enable_decimal_float=dpd

      ;;

  esac

fi

AC_SUBST(enable_decimal_float)

# Check for fixed-point support.

AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],

               [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes],

                                  [libgcc_cv_fixed_point=no])])

fixed_point=$libgcc_cv_fixed_point

AC_SUBST(fixed_point)

# Check 32bit or 64bit for x86.

case ${host} in

i?86*-*-* | x86_64*-*-*)

  cat > conftest.c <

#ifdef __x86_64__

host_address=64

#else

host_address=32

#endif

EOF

    eval `${CC-cc} -E conftest.c | grep host_address=`

    rm -f conftest.c

    ;;

esac

# Collect host-machine-specific information.

. ${srcdir}/config.host

# Check if Solaris/x86 linker supports ZERO terminator unwind entries.

# This is after config.host so we can augment tmake_file.

# Link with -nostartfiles -nodefaultlibs since neither are present while

# building libgcc.

case ${host} in

i?86-*-solaris2.1[[0-9]]*)

  cat > conftest.s <

        .section        .eh_frame,"a",@unwind

        .zero   4

        .section        .jcr,"aw",@progbits

        .zero   8

EOF

  if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then

      # configure expects config files in libgcc/config, so need a relative

      # path here.

      tmake_file="${tmake_file} ../../gcc/config/i386/t-crtstuff"

  fi

  ;;

esac

# Check for visibility support.  This is after config.host so that

# we can check for asm_hidden_op.

AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],

    libgcc_cv_hidden_visibility_attribute, [

        echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c

        libgcc_cv_hidden_visibility_attribute=no

        if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then

            if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then

                libgcc_cv_hidden_visibility_attribute=yes

            fi

        fi

        rm -f conftest.*

    ])

if test $libgcc_cv_hidden_visibility_attribute = yes; then

    vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'

else

    vis_hide=

fi

AC_SUBST(vis_hide)

# See if we have thread-local storage.  We can only test assembler

# sicne link-time and run-time tests require the newly built

# gcc, which can't be used to build executable due to that libgcc

# is yet to be built here.

GCC_CHECK_CC_TLS

set_have_cc_tls=

if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then

  set_have_cc_tls="-DHAVE_CC_TLS"

fi

AC_SUBST(set_have_cc_tls)

# See if we have emulated thread-local storage.

GCC_CHECK_EMUTLS

set_use_emutls=

if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then

  set_use_emutls="-DUSE_EMUTLS"

fi

AC_SUBST(set_use_emutls)

# Conditionalize the makefile for this target machine.

tmake_file_=

for f in ${tmake_file}

do

        if test -f ${srcdir}/config/$f

        then

                tmake_file_="${tmake_file_} \$(srcdir)/config/$f"

        fi

done

tmake_file="${tmake_file_}"

AC_SUBST(tmake_file)

# Substitute configuration variables

AC_SUBST(extra_parts)

AC_SUBST(asm_hidden_op)

# We need multilib support.

AC_CONFIG_FILES([Makefile])

AC_CONFIG_COMMANDS([default],

  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h

if test -n "$CONFIG_FILES"; then

  # FIXME: We shouldn't need to set ac_file

  ac_file=Makefile

  . ${libgcc_topdir}/config-ml.in

fi]],

[[srcdir=${srcdir}

host=${host}

with_target_subdir=${with_target_subdir}

with_multisubdir=${with_multisubdir}

ac_configure_args="--enable-multilib ${ac_configure_args}"

CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}

libgcc_topdir=${libgcc_topdir}

CC="${CC}"

]])

AC_OUTPUT