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dnl This is the newlib configure.in file.

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

AC_PREREQ(2.59)

AC_INIT([newlib],[NEWLIB_VERSION])

AC_CONFIG_SRCDIR([libc])

AC_CONFIG_HEADER(newlib.h:newlib.hin)

dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake.

AC_CONFIG_AUX_DIR(..)

dnl Support --enable-newlib-io-pos-args

dnl This option is actually read in libc/configure.in.  It is repeated

dnl here so that it shows up in the help text.

AC_ARG_ENABLE(newlib-io-pos-args,

[  --enable-newlib-io-pos-args enable printf-family positional arg support],

[case "${enableval}" in

  yes) newlib_io_pos_args=yes ;;

  no)  newlib_io_pos_args=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-pos-args option) ;;

 esac], [newlib_io_pos_args=])dnl

dnl Support --enable-newlib-io-c99-formats

AC_ARG_ENABLE(newlib-io-c99-formats,

[  --enable-newlib-io-c99-formats   enable C99 support in IO functions like printf/scanf],

[case "${enableval}" in

  yes) newlib_io_c99_formats=yes;;

  no)  newlib_io_c99_formats=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-c99-formats option) ;;

 esac], [newlib_io_c99_formats=])dnl

dnl Support --enable-newlib-io-long-long

AC_ARG_ENABLE(newlib-io-long-long,

[  --enable-newlib-io-long-long   enable long long type support in IO functions like printf/scanf],

[case "${enableval}" in

  yes) newlib_io_long_long=yes;;

  no)  newlib_io_long_long=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-long option) ;;

 esac], [newlib_io_long_long=])dnl

dnl Support --enable-newlib-io-long-double

AC_ARG_ENABLE(newlib-io-long-double,

[  --enable-newlib-io-long-double   enable long double type support in IO functions printf/scanf],

[case "${enableval}" in

  yes) newlib_io_long_double=yes;;

  no)  newlib_io_long_double=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-double option) ;;

 esac], [newlib_io_long_double=])dnl

dnl If multibyte support is enabled, iconv should be enabled too

dnl Support --enable-newlib-mb

AC_ARG_ENABLE(newlib-mb,

[  --enable-newlib-mb        enable multibyte support],

[case "${enableval}" in

  yes) newlib_mb=yes;;

  no)  newlib_mb=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-mb option) ;;

 esac], [newlib_mb=])dnl

dnl Support --enable-newlib-iconv-encodings

AC_ARG_ENABLE(newlib-iconv-encodings,

[  --enable-newlib-iconv-encodings   enable specific comma-separated list of bidirectional iconv encodings to be built-in],

[if test x${enableval} = x; then

   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-encodings option - use comma-separated encodings list)

 fi

 iconv_encodings=${enableval}

 ], [iconv_encodings=])dnl

dnl Support --enable-newlib-iconv-from-encodings

AC_ARG_ENABLE(newlib-iconv-from-encodings,

[  --enable-newlib-iconv-from-encodings   enable specific comma-separated list of \"from\" iconv encodings to be built-in],

[if test x${enableval} = x; then

   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-from-encodings option - use comma-separated encodings list)

 fi

 iconv_from_encodings=${enableval}

 ], [iconv_from_encodings=])dnl

dnl Support --enable-newlib-iconv-to-encodings

AC_ARG_ENABLE(newlib-iconv-to-encodings,

[  --enable-newlib-iconv-to-encodings   enable specific comma-separated list of \"to\" iconv encodings to be built-in],

[if test x${enableval} = x; then

   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-to-encodings option - use comma-separated encodings list)

 fi

 iconv_to_encodings=${enableval}

 ], [iconv_to_encodings=])dnl

dnl Support --enable-newlib-iconv-external-ccs

AC_ARG_ENABLE(newlib-iconv-external-ccs,

[  --enable-newlib-iconv-external-ccs     enable capabilities to load external CCS files for iconv],

[if test "${newlib_iconv_external_ccs+set}" != set; then

   case "${enableval}" in

     yes) newlib_iconv_external_ccs=yes ;;

     no)  newlib_iconv_external_ccs=no ;;

     *)   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-external-ccs option) ;;

   esac

 fi], [newlib_iconv_external_ccs=${newlib_iconv_external_ccs}])dnl

dnl Support --disable-newlib-atexit-dynamic-alloc

AC_ARG_ENABLE(newlib-atexit-dynamic-alloc,

[  --disable-newlib-atexit-alloc    disable dynamic allocation of atexit entries],

[if test "${newlib_atexit_dynamic_alloc+set}" != set; then

  case "${enableval}" in

    yes) newlib_atexit_dynamic_alloc=yes ;;

    no)  newlib_atexit_dynamic_alloc=no  ;;

    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-atexit-dynamic-alloc option) ;;

  esac

 fi], [newlib_atexit_dynamic_alloc=${newlib_atexit_dynamic_alloc}])dnl

dnl Support --enable-newlib-reent-small

AC_ARG_ENABLE(newlib-reent-small,

[  --enable-newlib-reent-small   enable small reentrant struct support],

[case "${enableval}" in

  yes) newlib_reent_small=yes;;

  no)  newlib_reent_small=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-reent-small option) ;;

 esac], [newlib_reent_small=])dnl

NEWLIB_CONFIGURE(.)

dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and

dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first

dnl line of the macro which fail because appropriate LDFLAGS are not set.

_LT_DECL_SED

AC_PROG_AWK

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

AC_LIBTOOL_WIN32_DLL

AM_PROG_LIBTOOL

fi

AC_ARG_ENABLE(newlib_hw_fp,

[  --enable-newlib-hw-fp    Turn on hardware floating point math],

[case "${enableval}" in

   yes) newlib_hw_fp=true ;;

   no)  newlib_hw_fp=false ;;

   *) AC_MSG_ERROR(bad value ${enableval} for --enable-newlib-hw-fp) ;;

 esac],[newlib_hw_fp=false])

AM_CONDITIONAL(NEWLIB_HW_FP, test x$newlib_hw_fp = xtrue)

# These get added in the top-level configure.in, except in the case where

# newlib is being built natively.

LIBC_INCLUDE_GREP=`echo ${CC} | grep \/libc\/include`

abs_newlib_basedir=`cd ${newlib_basedir} && pwd`

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

  CC_FOR_NEWLIB="${CC} -I$PWD/targ-include -I${abs_newlib_basedir}/libc/include"

else

  CC_FOR_NEWLIB="${CC}"

fi

AC_SUBST(CC_FOR_NEWLIB)

AC_CONFIG_SUBDIRS(libc)

AC_CONFIG_SUBDIRS(libm)

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

  AC_CONFIG_SUBDIRS(doc)

  have_doc=yes

else

  have_doc=

fi

AM_CONDITIONAL(HAVE_DOC, test x$have_doc = xyes)

EXTRA_DIRS=

case $host in

  i[[34567]]86-pc-linux-*)

        AC_CONFIG_SUBDIRS(iconvdata)

        EXTRA_DIRS=iconvdata

        ;;

esac

AC_SUBST(EXTRA_DIRS)

CRT0=

CRT0_DIR=

if test "x${have_crt0}" = "xyes"; then

  CRT0=crt0.o

  CRT0_DIR=libc/

fi

AC_SUBST(CRT0)

AC_SUBST(CRT0_DIR)

CRT1=${crt1}

CRT1_DIR=

if test -n "${crt1_dir}"; then

  CRT1_DIR=${crt1_dir}/

fi

AC_SUBST(CRT1)

AC_SUBST(CRT1_DIR)

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

  LIBM_MACHINE_OBJECTLIST=libm/machine/${libm_machine_dir}/objectlist.awk.in

fi

AC_SUBST(LIBM_MACHINE_OBJECTLIST)

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

  MACHINE_OBJECTLIST=libc/machine/${machine_dir}/objectlist.awk.in

fi

AC_SUBST(MACHINE_OBJECTLIST)

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

  SYS_OBJECTLIST=libc/sys/${sys_dir}/objectlist.awk.in

fi

AC_SUBST(SYS_OBJECTLIST)

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

  SYS_MACH_OBJECTLIST=libc/sys/${sys_dir}/machine/${machine_dir}/objectlist.awk.in

fi

AC_SUBST(SYS_MACH_OBJECTLIST)

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

  POSIX_OBJECTLIST=libc/${posix_dir}/objectlist.awk.in

fi

AC_SUBST(POSIX_OBJECTLIST)

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

  SIGNAL_OBJECTLIST=libc/${signal_dir}/objectlist.awk.in

fi

AC_SUBST(SIGNAL_OBJECTLIST)

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

  SYSCALL_OBJECTLIST=libc/${syscall_dir}/objectlist.awk.in

fi

AC_SUBST(SYSCALL_OBJECTLIST)

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

  UNIX_OBJECTLIST=libc/${unix_dir}/objectlist.awk.in

fi

AC_SUBST(UNIX_OBJECTLIST)

if test -n "${stdio64_dir}"; then

  STDIO64_OBJECTLIST=libc/${stdio64_dir}/objectlist.awk.in

fi

AC_SUBST(STDIO64_OBJECTLIST)

# Put a plausible default for CC_FOR_BUILD in Makefile.

if test -z "$CC_FOR_BUILD"; then

  CC_FOR_BUILD=gcc

fi

AC_SUBST(CC_FOR_BUILD)

if test "${newlib_elix_level}" -gt "0"; then

AC_DEFINE_UNQUOTED(_ELIX_LEVEL,${newlib_elix_level})

fi

if test "${newlib_io_c99_formats}" = "yes"; then

AC_DEFINE_UNQUOTED(_WANT_IO_C99_FORMATS)

fi

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

AC_DEFINE_UNQUOTED(_WANT_IO_LONG_LONG)

fi

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

AC_DEFINE_UNQUOTED(_WANT_IO_LONG_DOUBLE)

fi

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

AC_DEFINE_UNQUOTED(_WANT_IO_POS_ARGS)

fi

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

AC_DEFINE_UNQUOTED(_WANT_REENT_SMALL)

fi

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

AC_DEFINE_UNQUOTED(_MB_CAPABLE)

AC_DEFINE_UNQUOTED(_MB_LEN_MAX,8)

else

AC_DEFINE_UNQUOTED(_MB_LEN_MAX,1)

fi

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

AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS)

fi

AC_DEFINE_UNQUOTED(_NEWLIB_VERSION,"NEWLIB_VERSION")

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

  multilib_arg="--enable-multilib"

else

  multilib_arg=

fi

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

AC_DEFINE_UNQUOTED(_ICONV_ENABLED,1)

fi

if test "x${newlib_iconv_external_ccs}" = "xyes"; then

  if test "x${newlib_iconv}" = "x"; then

      AC_MSG_ERROR(--enable-newlib-iconv-external-ccs option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.)

  fi

  AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS,1)

fi

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

AC_DEFINE_UNQUOTED(_ATEXIT_DYNAMIC_ALLOC)

fi

dnl

dnl Parse --enable-newlib-iconv-encodings option argument

dnl

if test "x${iconv_encodings}" != "x" \

   || test "x${iconv_to_encodings}" != "x" \

   || test "x${iconv_from_encodings}" != "x"; then

  if test "x${newlib_iconv}" = "x"; then

      AC_MSG_ERROR([--enable-newlib-iconv-encodings, --enable-newlib-iconv-from-encodings and --enable-newlib-iconv-to-encodings option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.])

  fi

  dnl Normalize encodings names and delete commas

  iconv_encodings=`echo "${iconv_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`

  iconv_to_encodings=`echo "${iconv_to_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`

  iconv_from_encodings=`echo "${iconv_from_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`

  dnl Get the list of available encodings excluding comments

  dnl Join line with previous if the first character is whitespace

  available_encodings=`cat "${srcdir}/libc/iconv/encoding.aliases" | sed -e '/^#.*/d'`

  dnl Check if required encodings are supported

  dnl Convert aliases to names

  dnl iconv_encodings

  iconv_encodings1="${iconv_encodings}"

  iconv_encodings=""

  for encoding in ${iconv_encodings1}; do

      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`

      if test $? != "0"; then

          AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)

      fi

      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`

      iconv_encodings="${iconv_encodings} ${encoding1}"

  done

  dnl Enable appropriate option in newlib.h

  for encoding in ${iconv_encodings}; do

      opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`

      AC_DEFINE_UNQUOTED($opt,1)

      opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`

      AC_DEFINE_UNQUOTED($opt,1)

  done

  dnl iconv_to_encodings

  iconv_encodings1="${iconv_to_encodings}"

  iconv_to_encodings=""

  for encoding in ${iconv_encodings1}; do

      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`

      if test $? != "0"; then

          AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)

      fi

      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`

      iconv_to_encodings="${iconv_to_encodings} ${encoding1}"

  done

  dnl Enable appropriate option in newlib.h

  for encoding in ${iconv_to_encodings}; do

      opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`

      AC_DEFINE_UNQUOTED($opt,1)

  done

  dnl iconv_from_encodings

  iconv_encodings1="${iconv_from_encodings}"

  iconv_from_encodings=""

  for encoding in ${iconv_encodings1}; do

      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`

      if test $? != "0"; then

          AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)

      fi

      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`

      iconv_from_encodings="${iconv_from_encodings} ${encoding1}"

  done

  dnl Enable appropriate option in newlib.h

  for encoding in ${iconv_from_encodings}; do

      opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`

      AC_DEFINE_UNQUOTED($opt,1)

  done

fi;

AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,

               libc_cv_initfinit_array, [dnl

cat > conftest.c <

int _start (void) { return 0; }

int __start (void) { return 0; }

int foo (void) { return 1; }

int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;

EOF

if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c

                   -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])

then

  if ${READELF} -S conftest | grep -e INIT_ARRAY > /dev/null; then

    libc_cv_initfinit_array=yes

  else

    libc_cv_initfinit_array=no

  fi

else

  libc_cv_initfinit_array=no

fi

rm -f conftest*])

AC_SUBST(libc_cv_initfinit_array)

if test $libc_cv_initfinit_array = yes; then

  AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)

fi

AC_CACHE_CHECK(for array aliasing support,

               libc_cv_array_aliasing, [dnl

cat > conftest.c <

char x[3] = { 'a', 'b', 'c' };

extern char y[2] __attribute__((alias ("x+1")));

EOF

if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c conftest.c

                   1>&AS_MESSAGE_LOG_FD])

then

  libc_cv_array_aliasing=yes

else

  libc_cv_array_aliasing=no

fi

rm -f conftest*])

AC_SUBST(libc_cv_array_aliasing)

if test $libc_cv_array_aliasing = yes; then

  AC_DEFINE_UNQUOTED(_HAVE_ARRAY_ALIASING)

fi

AC_CONFIG_FILES([Makefile],

[if test -n "$CONFIG_FILES"; then

  unset ac_file

  . ${newlib_basedir}/../config-ml.in

fi],

srcdir=${srcdir}

host=${host}

with_multisubdir=${with_multisubdir}

ac_configure_args="${multilib_arg} ${ac_configure_args}"

CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}

newlib_basedir=${newlib_basedir}

CC="${CC}"

LDFLAGS="${LDFLAGS}"

)

AC_OUTPUT