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dnl This provides configure definitions used by all the newlib

dnl configure.in files.

dnl Basic newlib configury.  This calls basic introductory stuff,

dnl including AM_INIT_AUTOMAKE and AC_CANONICAL_HOST.  It also runs

dnl configure.host.  The only argument is the relative path to the top

dnl newlib directory.

AC_DEFUN(NEWLIB_CONFIGURE,

[

dnl Default to --enable-multilib

AC_ARG_ENABLE(multilib,

[  --enable-multilib         build many library versions (default)],

[case "${enableval}" in

  yes) multilib=yes ;;

  no)  multilib=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;

 esac], [multilib=yes])dnl

dnl Support --enable-target-optspace

AC_ARG_ENABLE(target-optspace,

[  --enable-target-optspace  optimize for space],

[case "${enableval}" in

  yes) target_optspace=yes ;;

  no)  target_optspace=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for target-optspace option) ;;

 esac], [target_optspace=])dnl

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=no])dnl

dnl We may get other options which we don't document:

dnl --with-target-subdir, --with-multisrctop, --with-multisubdir

test -z "[$]{with_target_subdir}" && with_target_subdir=.

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

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

    newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"

  else

    newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"

  fi

else

  newlib_basedir="[$]{srcdir}/$1"

fi

AC_SUBST(newlib_basedir)

AC_CANONICAL_HOST

AM_INIT_AUTOMAKE(newlib, 1.8.2)

# FIXME: We temporarily define our own version of AC_PROG_CC.  This is

# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We

# are probably using a cross compiler, which will not be able to fully

# link an executable.  This should really be fixed in autoconf

# itself.

AC_DEFUN(LIB_AC_PROG_CC,

[AC_BEFORE([$0], [AC_PROG_CPP])dnl

AC_CHECK_PROG(CC, gcc, gcc)

if test -z "$CC"; then

  AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)

  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])

fi

AC_PROG_CC_GNU

if test $ac_cv_prog_gcc = yes; then

  GCC=yes

dnl Check whether -g works, even if CFLAGS is set, in case the package

dnl plays around with CFLAGS (such as to build both debugging and

dnl normal versions of a library), tasteless as that idea is.

  ac_test_CFLAGS="${CFLAGS+set}"

  ac_save_CFLAGS="$CFLAGS"

  CFLAGS=

  AC_PROG_CC_G

  if test "$ac_test_CFLAGS" = set; then

    CFLAGS="$ac_save_CFLAGS"

  elif test $ac_cv_prog_cc_g = yes; then

    CFLAGS="-g -O2"

  else

    CFLAGS="-O2"

  fi

else

  GCC=

  test "${CFLAGS+set}" = set || CFLAGS="-g"

fi

])

LIB_AC_PROG_CC

# AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD).  If we don't

# run it explicitly here, it will be run implicitly before

# NEWLIB_CONFIGURE, which doesn't work because that means that it will

# be run before AC_CANONICAL_HOST.

AC_CANONICAL_BUILD

AC_CHECK_TOOL(AS, as)

AC_CHECK_TOOL(AR, ar)

AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_PROG_INSTALL

AM_MAINTAINER_MODE

# We need AC_EXEEXT to keep automake happy in cygnus mode.  However,

# at least currently, we never actually build a program, so we never

# need to use $(EXEEXT).  Moreover, the test for EXEEXT normally

# fails, because we are probably configuring with a cross compiler

# which can't create executables.  So we include AC_EXEEXT to keep

# automake happy, but we don't execute it, since we don't care about

# the result.

if false; then

  AC_EXEEXT

fi

. [$]{newlib_basedir}/configure.host

case [$]{newlib_basedir} in

/* | [A-Za-z]:[/\\]*) newlib_flagbasedir=[$]{newlib_basedir} ;;

*) newlib_flagbasedir='[$](top_builddir)/'[$]{newlib_basedir} ;;

esac

newlib_cflags="[$]{newlib_cflags} -I"'[$](top_builddir)'"/$1/targ-include -I[$]{newlib_flagbasedir}/libc/include"

case "${host}" in

  *-*-cygwin*)

    newlib_cflags="[$]{newlib_cflags} -I[$]{newlib_flagbasedir}/../winsup/include"

    ;;

esac

newlib_cflags="[$]{newlib_cflags} -fno-builtin"

NEWLIB_CFLAGS=${newlib_cflags}

AC_SUBST(NEWLIB_CFLAGS)

AC_SUBST(machine_dir)

AC_SUBST(sys_dir)

])