dnl We require that everyone use exactly the same Autoconf version so that

dnl the internal functions defined and used by the main configure script

dnl match those expected by the fragments.  When changing this version,

dnl install.texi also needs to be updated.

m4_define([GLIBC_AUTOCONF_VERSION], [2.69])

m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [],

      [m4_fatal(m4_flatten(

Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have

m4_defn([AC_AUTOCONF_VERSION])

), [63])])dnl

dnl

dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro

dnl which appears in configure.ac before the sysdep configure scripts are run.

dnl Each sysdep configure.ac does GLIBC_PROVIDES first, to avoid any

dnl AC_REQUIREs or AC_BEFOREs duplicating their code.

dnl

define([GLIBC_PROVIDES], [dnl

AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl

AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl

AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl

AC_PROVIDE([_AS_ECHO_PREPARE])dnl

AC_PROVIDE([_AS_CR_PREPARE])dnl

AC_PROVIDE([_AS_TR_SH_PREPARE])dnl

AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl

AC_PROVIDE([AC_PROG_INSTALL])dnl

AC_PROVIDE([AC_PROG_CC])dnl

AC_PROVIDE([AC_PROG_CPP])dnl

AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl

AC_PROVIDE([_AS_TEST_PREPARE])dnl

AC_PROVIDE([_AS_BASENAME_PREPARE])dnl

AC_PROVIDE([_AS_ME_PREPARE])dnl

AC_PROVIDE([_AS_LINENO_PREPARE])dnl

AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl

AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl

AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl

AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl

define([AS_MESSAGE_LOG_FD],5)dnl

define([AS_MESSAGE_FD],6)dnl

dnl Ripped out of AS_INIT, which does more cruft we do not want.

m4_wrap([m4_divert_pop([BODY])[]])

m4_divert_push([BODY])[]dnl

dnl End of ripped out of AS_INIT.

# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!

define([_AC_LANG], [C])dnl

])dnl

dnl

dnl Check for a symbol

dnl

AC_DEFUN([AC_CHECK_SYMBOL], [dnl

AC_MSG_CHECKING(for $1)

AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl

AC_TRY_LINK(,

changequote(,)dnl

extern char *$1[]; puts(*$1);,

changequote([,])dnl

	    ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)])

if test "$ac_cv_check_symbol_$1" = yes; then

changequote(,)dnl

  ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'`

changequote([,])dnl

  AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol})

fi

AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl

dnl

dnl Locate a program and check that its version is acceptable.

dnl AC_PROG_CHECK_VER(var, namelist, version-switch,

dnl 		      [version-extract-regexp], version-glob [, do-if-fail])

AC_DEFUN([AC_CHECK_PROG_VER],

[AC_CHECK_PROGS([$1], [$2])

if test -z "[$]$1"; then

  ac_verc_fail=yes

else

  # Found it, now check the version.

  AC_MSG_CHECKING([version of [$]$1])

changequote(<<,>>)dnl

  ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,,

		   <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)`

  case $ac_prog_version in

    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;

    <<$5>>)

changequote([,])dnl

       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;

    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;

  esac

  AC_MSG_RESULT([$ac_prog_version])

fi

ifelse([$6],,,

[if test $ac_verc_fail = yes; then

  $6

fi])

])

dnl These modifications are to allow for an empty cross compiler tree.

define([_AC_COMPILER_EXEEXT], [EXEEXT=

])

AC_DEFUN([LIBC_PROG_FOO_GNU],

[# Most GNU programs take a -v and spit out some text including

# the word 'GNU'.  Some try to read stdin, so give them /dev/null.

if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then

  $2

else

  $3

fi

rm -fr contest*])

AC_DEFUN([LIBC_PROG_BINUTILS],

[# Was a --with-binutils option given?

if test -n "$path_binutils"; then

    # Make absolute; ensure a single trailing slash.

    path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'`

    CC="$CC -B$path_binutils"

fi

AS=`$CC -print-prog-name=as`

LD=`$CC -print-prog-name=ld`

AR=`$CC -print-prog-name=ar`

AC_SUBST(AR)

OBJDUMP=`$CC -print-prog-name=objdump`

AC_SUBST(OBJDUMP)

OBJCOPY=`$CC -print-prog-name=objcopy`

AC_SUBST(OBJCOPY)

GPROF=`$CC -print-prog-name=gprof`

AC_SUBST(GPROF)

# Determine whether we are using GNU binutils.

AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu,

[LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)])

rm -f a.out

gnu_as=$libc_cv_prog_as_gnu

AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu,

[LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)])

gnu_ld=$libc_cv_prog_ld_gnu

])

dnl Run a static link test with -nostdlib -nostartfiles.

dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false])

AC_DEFUN([LIBC_TRY_LINK_STATIC],

[cat > conftest.c <

int _start (void) { return 0; }

int __start (void) { return 0; }

$1

EOF

AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -o conftest

		       conftest.c -static -nostartfiles -nostdlib

		       1>&AS_MESSAGE_LOG_FD])],

      [$2], [$3])

rm -f conftest*])

dnl Test a compiler option or options with an empty input file.

dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false])

AC_DEFUN([LIBC_TRY_CC_OPTION],

[AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])],

	[$2], [$3])])

dnl Find and source sysdeps/*/preconfigure.

dnl LIBC_PRECONFIGURE([$srcdir], [for])

AC_DEFUN([LIBC_PRECONFIGURE], [dnl

if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null`

then

  AC_MSG_CHECKING($2 preconfigure fragments)

  for frag in $frags; do

    name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'`

    echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD

    . "$frag"

  done

  AC_MSG_RESULT()

fi])

# These two macros are taken from GCC's config/acx.m4.

dnl Support the --with-pkgversion configure option.

dnl ACX_PKGVERSION(default-pkgversion)

AC_DEFUN([ACX_PKGVERSION],[

  AC_ARG_WITH(pkgversion,

    AS_HELP_STRING([--with-pkgversion=PKG],

                   [Use PKG in the version string in place of "$1"]),

    [case "$withval" in

      yes) AC_MSG_ERROR([package version not specified]) ;;

      no)  PKGVERSION= ;;

      *)   PKGVERSION="($withval) " ;;

     esac],

    PKGVERSION="($1) "

  )

  PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'`

  AC_SUBST(PKGVERSION)

  AC_SUBST(PKGVERSION_TEXI)

])

dnl Support the --with-bugurl configure option.

dnl ACX_BUGURL(default-bugurl)

AC_DEFUN([ACX_BUGURL],[

  AC_ARG_WITH(bugurl,

    AS_HELP_STRING([--with-bugurl=URL],

                   [Direct users to URL to report a bug]),

    [case "$withval" in

      yes) AC_MSG_ERROR([bug URL not specified]) ;;

      no)  BUGURL=

	   ;;

      *)   BUGURL="$withval"

	   ;;

     esac],

     BUGURL="$1"

  )

  case ${BUGURL} in

  "")

    REPORT_BUGS_TO=

    REPORT_BUGS_TEXI=

    ;;

  *)

    REPORT_BUGS_TO="<$BUGURL>"

    REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}

    ;;

  esac;

  AC_SUBST(REPORT_BUGS_TO)

  AC_SUBST(REPORT_BUGS_TEXI)

])

dnl Check linker option support.

dnl LIBC_LINKER_FEATURE([ld_option], [cc_option], [action-if-true], [action-if-false])

AC_DEFUN([LIBC_LINKER_FEATURE],

[AC_MSG_CHECKING([for linker that supports $1])

libc_linker_feature=no

if test x"$gnu_ld" = x"yes"; then

  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"`

  if test -n "$libc_linker_check"; then

    cat > conftest.c <

int _start (void) { return 42; }

EOF

    if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp

				$2 -nostdlib -nostartfiles

				-fPIC -shared -o conftest.so conftest.c

				1>&AS_MESSAGE_LOG_FD])

    then

      libc_linker_feature=yes

    fi

    rm -f conftest*

  fi

fi

if test $libc_linker_feature = yes; then

  $3

else

  $4

fi

AC_MSG_RESULT($libc_linker_feature)])

dnl Add a makefile variable, with value set from a shell string

dnl (expanded by the shell inside double quotes), to config.make.

dnl LIBC_CONFIG_VAR(make-variable, shell-value)

AC_DEFUN([LIBC_CONFIG_VAR],

[config_vars="$config_vars

$1 = $2"])

dnl Check that function FUNC was inlined as a builtin.  The code fragment

dnl CODE is compiled with additional options CC_OPTION.  If FUNC is

dnl not found in the assembly then it is assumed the compiler has support

dnl for this builtin and has inlined the call.  If the compiler has the

dnl feature then ACTION-IF-TRUE is called, otherwise ACTION-IF-FALSE.

dnl It is up to the caller to provide a CC_OPTION that ensures the

dnl builtin is inlined if present.

dnl Warning: This may not work for some machines. For example on ARM the

dnl ABI dictates that some functions should not be inlined and instead

dnl should be provided by a compiler helper library e.g. __aeabi_memcpy.

dnl This is done to reduce code size.

dnl LIBC_COMPILER_BUILTIN([func], [code], [cc_option], [action-if-true], [action-if-false])

AC_DEFUN([LIBC_COMPILER_BUILTIN_INLINED],

[AC_MSG_CHECKING([for compiler support of inlined builtin function $1])

libc_compiler_builtin_inlined=no

cat > conftest.c <

int _start (void) { $2 return 0; }

EOF

if ! AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp

		     $3 -nostdlib -nostartfiles

		     -S conftest.c -o - | fgrep "$1"

		     1>&AS_MESSAGE_LOG_FD])

then

  libc_compiler_builtin_inlined=yes

fi

rm -f conftest*

if test $libc_compiler_builtin_inlined = yes; then

  $4

else

  $5

fi

AC_MSG_RESULT($libc_compiler_builtin_inlined)])

dnl Default to slibdir named SLIBDIR instead of "lib", and rtlddir

dnl named RTLDDIR instead of "lib".  This is used to put 64-bit

dnl libraries in /lib64.

dnl LIBC_SLIBDIR_RTLDDIR([slibdir], [rtlddir])

AC_DEFUN([LIBC_SLIBDIR_RTLDDIR],

[test -n "$libc_cv_slibdir" ||

case "$prefix" in

/usr | /usr/)

  libc_cv_slibdir='/$1'

  libc_cv_rtlddir='/$2'

  if test "$libdir" = '${exec_prefix}/lib'; then

    libdir='${exec_prefix}/$1';

    # Locale data can be shared between 32-bit and 64-bit libraries.

    libc_cv_complocaledir='${exec_prefix}/lib/locale'

  fi

  ;;

esac])