libc/newlib/configure.in

dnl This is the newlib configure.in file.
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.13)
AC_INIT(libc)
AM_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=no])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.
if test "${use_libtool}" = "yes"; then
AC_LIBTOOL_WIN32_DLL
AM_PROG_LIBTOOL
AC_PROG_AWK
fi

configdirs="libc libm"

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)

if test -z "${with_multisubdir}"; then
  configdirs="${configdirs} doc"
  have_doc=yes
else
  have_doc=
fi
AM_CONDITIONAL(HAVE_DOC, test x$have_doc = xyes)

EXTRA_DIRS=
case $host in
  i[[34567]]86-pc-linux-*)
	configdirs="${configdirs} iconvdata"
	EXTRA_DIRS=iconvdata
	;;
esac
AC_SUBST(EXTRA_DIRS)

# 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(${configdirs})

CRT0=
CRT0_DIR=
if test -n "${sys_dir}"; 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_mb}" = "yes"; then
AC_DEFINE_UNQUOTED(_MB_LEN_MAX,8)
else
AC_DEFINE_UNQUOTED(_MB_LEN_MAX,1)
fi

AC_DEFINE_UNQUOTED(_NEWLIB_VERSION,"$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

dnl Parse --enable-newlib-builtin-converters option argument
if test "x${builtin_converters}" != "x"; then
  
  dnl Check that --enable-newlib-iconv was enabled
  if test x${newlib_iconv} = x; then
      AC_MSG_ERROR(--enable-newlib-builtin-converters option can't be used if iconv library is disabled - use --enable-newlib-iconv to enable it)
  fi
  
  dnl Normalize converter names and delete commas
  builtin_converters=`echo "${builtin_converters}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
  
  dnl Get the list of available converters excluding comments
  dnl Join line with previous if the first character is whitespace
  available_converters=`cat "${srcdir}/libc/iconv/charset.aliases" | sed -e '/#/d' | sed -e 'N; s/\n //;'`
    
  dnl Check if required converters are supported
  dnl Convert aliases to "official" names
  builtin_converters1="${builtin_converters}"
  builtin_converters=""
  for converter in ${builtin_converters1}; do
      result=`echo "${available_converters}" | grep -e "\(^\| \)${converter}\( \|\$\)"`
      if test $? != "0"; then
          AC_MSG_ERROR(${converter} is not supported - see ${srcdir}/libc/iconv/charset.aliases file for the list of available converters)
      fi
      converter1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
      builtin_converters="${builtin_converters} ${converter1}"
  done

  dnl Enable appropriate option in newlib.h
  for converter in ${builtin_converters}; do
      opt=_ICONV_CONVERTER_`echo "${converter}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
      AC_DEFINE_UNQUOTED($opt,1)
  done
fi;

AC_OUTPUT(Makefile,
[if test -n "$CONFIG_FILES"; then
  unset ac_file
  . ${newlib_basedir}/../config-ml.in
fi],
srcdir=${srcdir}
host=${host}
target=${target}
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}"
)