Subversion Repositories openrisc

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/lib-ld.m4)

sinclude(../config/override.m4)

sinclude(../config/picflag.m4)

sinclude(../config/dfp.m4)

sinclude(../config/unwind_ipinfo.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)

GCC_PICFLAG

AC_SUBST(PICFLAG)

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

ACX_NONCANONICAL_TARGET

GCC_TOPLEV_SUBDIRS

# Calculate toolexeclibdir

# Also toolexecdir, though it's only used in toolexeclibdir

case ${version_specific_libs} in

  yes)

    # Need the gcc compiler version to know where to install libraries

    # and header files if --enable-version-specific-runtime-libs option

    # is selected.

    toolexecdir='$(libdir)/gcc/$(target_noncanonical)'

    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'

    ;;

  no)

    if test -n "$with_cross_host" &&

       test x"$with_cross_host" != x"no"; then

      # Install a library built with a cross compiler in tooldir, not libdir.

      toolexecdir='$(exec_prefix)/$(target_noncanonical)'

      toolexeclibdir='$(toolexecdir)/lib'

    else

      toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'

      toolexeclibdir='$(libdir)'

    fi

    multi_os_directory=`$CC -print-multi-os-directory`

    case $multi_os_directory in

      .) ;; # Avoid trailing /.

      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;

    esac

    ;;

esac

AC_SUBST(toolexecdir)

AC_SUBST(toolexeclibdir)

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

AC_CHECK_SIZEOF([double])

AC_CHECK_SIZEOF([long double])

AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])

AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8])

AC_SUBST(double_type_size)

AC_SUBST(long_double_type_size)

# 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)

GCC_AC_ENABLE_DECIMAL_FLOAT([$host])

# 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)

# For platforms with the unwind ABI which includes an unwind library,

# libunwind, we can choose to use the system libunwind.

# config.gcc also contains tests of with_system_libunwind.

GCC_CHECK_UNWIND_GETIPINFO

# The sjlj test is almost duplicated here and in libgo/configure.ac (for C),

# libstdc++-v3/acinclude.m4 and libjava/configure.ac (for C++), and

# libobjc/configure.ac (for Objective-C).

# FIXME: This should be centralized in config/sjlj.m4.

AC_ARG_ENABLE(sjlj-exceptions,

  AC_HELP_STRING([--enable-sjlj-exceptions],

                 [force use of builtin_setjmp for exceptions]),

  [case "$enableval" in

   yes|no|auto) ;;

   *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;

   esac],

  [enable_sjlj_exceptions=auto])

AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],

[libgcc_cv_lib_sjlj_exceptions],

[AC_LANG_CONFTEST(

  [AC_LANG_SOURCE([

void bar ();

void clean (int *);

void foo ()

{

  int i __attribute__ ((cleanup (clean)));

  bar();

}

])])

CFLAGS_hold=$CFLAGS

CFLAGS="--save-temps -fexceptions"

libgcc_cv_lib_sjlj_exceptions=unknown

AS_IF([ac_fn_c_try_compile],

  [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then

    libgcc_cv_lib_sjlj_exceptions=yes

  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then

    libgcc_cv_lib_sjlj_exceptions=no

  fi])

CFLAGS=$CFLAGS_hold

rm -f conftest*

])

if test "$enable_sjlj_exceptions" = "auto"; then

  enable_sjlj_exceptions=$libgcc_cv_lib_sjlj_exceptions

fi

case $enable_sjlj_exceptions in

yes)

  AC_DEFINE(LIBGCC_SJLJ_EXCEPTIONS, 1,

        [Define if the C compiler is configured for setjmp/longjmp exceptions.])

  ;;

no)

  ;;

*)

  AC_MSG_ERROR([unable to detect exception model])

  ;;

esac

AC_LIB_PROG_LD_GNU

AC_MSG_CHECKING([for thread model used by GCC])

target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`

AC_MSG_RESULT([$target_thread_file])

# Check for assembler CFI support.

AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],

               [AC_COMPILE_IFELSE(

[asm("\n\

        .text\n\

        .cfi_startproc\n\

        .cfi_personality 0, symbol\n\

        .cfi_endproc");],

  [libgcc_cv_cfi=yes],

  [libgcc_cv_cfi=no])])

# Check 32bit or 64bit

cat > conftest.c <

#if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__))

host_address=64

#else

host_address=32

#endif

EOF

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

rm -f conftest.c

# 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* | x86_64-*-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

      tmake_file="${tmake_file} 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 sfp-machine.h header for this target machine.

if test -z "${sfp_machine_header}"; then

        sfp_machine_header=$cpu_type/sfp-machine.h

        if test -f ${srcdir}/config/${sfp_machine_header}; then

                :

        else

                sfp_machine_header=no-sfp-machine.h

        fi

fi

AC_SUBST(sfp_machine_header)

# 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)

# Likewise export definitions for libgcc_tm.h

tm_file_=

for f in ${tm_file}

do

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

done

tm_file="${tm_file_}"

AC_SUBST(tm_file)

AC_SUBST(tm_defines)

# Map from thread model to thread header.

case $target_thread_file in

    aix)        thread_header=config/rs6000/gthr-aix.h ;;

    dce)        thread_header=config/pa/gthr-dce.h ;;

    lynx)       thread_header=config/gthr-lynx.h ;;

    mipssde)    thread_header=config/mips/gthr-mipssde.h ;;

    posix)      thread_header=gthr-posix.h ;;

    rtems)      thread_header=config/gthr-rtems.h ;;

    single)     thread_header=gthr-single.h ;;

    tpf)        thread_header=config/s390/gthr-tpf.h ;;

    vxworks)    thread_header=config/gthr-vxworks.h ;;

    win32)      thread_header=config/i386/gthr-win32.h ;;

esac

# Substitute configuration variables

AC_SUBST(cpu_type)

AC_SUBST(extra_parts)

AC_SUBST(asm_hidden_op)

AC_CONFIG_LINKS([enable-execute-stack.c:$enable_execute_stack])

AC_CONFIG_LINKS([unwind.h:$unwind_header])

AC_CONFIG_LINKS([md-unwind-support.h:config/$md_unwind_header])

AC_CONFIG_LINKS([sfp-machine.h:config/$sfp_machine_header])

AC_CONFIG_LINKS([gthr-default.h:$thread_header])

# 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