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# Copyright (c) 1995, 1996 Cygnus Support

#

# The authors hereby grant permission to use, copy, modify, distribute,

# and license this software and its documentation for any purpose, provided

# that existing copyright notices are retained in all copies and that this

# notice is included verbatim in any distributions. No written agreement,

# license, or royalty fee is required for any of the authorized uses.

# Modifications to this software may be copyrighted by their authors

# and need not follow the licensing terms described here, provided that

# the new terms are clearly indicated on the first page of each file where

# they apply.

#

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

#

AC_PREREQ(2.5)dnl

AC_INIT(close.c)

AC_CONFIG_HEADER(config.h)

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

    echo "Shared libraries not supported for cross compiling, ignored"

fi

if test "$srcdir" = "." ; then

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

    libgloss_topdir="${srcdir}/${with_multisrctop}../../.."

  else

    libgloss_topdir="${srcdir}/${with_multisrctop}../.."

  fi

else

  libgloss_topdir="${srcdir}/../.."

fi

AC_CONFIG_AUX_DIR($libgloss_topdir)

AC_CANONICAL_SYSTEM

AC_ARG_PROGRAM

AC_PROG_INSTALL

# 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 building a library that must be included in all links, so we

# can't link an executable until this lib is built.

# autoconf should provide a way to do this.

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

])

AC_DEFINE(HAVE_GNU_LD)

dnl Make sure syscall names match those being used by newlib

case "${target}" in

  *-*-cygwin*)

        ;;

  a29k-amd-udi)

        ;;

  arc-*-*)

        ;;

  arm-*-pe)

        ;;

  arm-*-*)

        ;;

  strongarm-*-*)

        ;;

  d10v*)

        ;;

  h8300*-*-*)

        ;;

  h8500-*-*)

        ;;

  i[3456]86-*-sco*)

        ;;

  m32r-*-*)

        ;;

  mn10?00-*-*)

        ;;

  powerpcle-*-pe)

        ;;

  sh*-*-*)

        ;;

  sparc-sun-sunos*)

        ;;

  sparc64-*-*)

        ;;

  thumb-*-pe)

        ;;

  thumb-*-*)

        ;;

  v850-*-*)

        ;;

  v850e-*-*)

        ;;

  v850ea-*-*)

        ;;

  w65-*-*)

        ;;

  z8k-*-*)

        ;;

  *)

        AC_DEFINE(MISSING_SYSCALL_NAMES)

        ;;

esac

dnl Make sure we know if elf format used

case "${target}" in

  *-*-elf)

        AC_DEFINE(HAVE_ELF)

        AC_CACHE_CHECK(for .previous assembler directive,

                       libc_cv_asm_previous_directive, [dnl

        cat > conftest.s <

.section foo_section

.previous

EOF

        if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then

          AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)

        else

          rm -f conftest*])

          AC_CACHE_CHECK(for .popsection assembler directive,

                         libc_cv_asm_popsection_directive, [dnl

          cat > conftest.s <

.pushsection foo_section

.popsection

EOF

          if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then

            AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)

          fi

        fi

        rm -f conftest*])

        ;;

esac

AC_CACHE_CHECK(for function prefix, libc_dollar_prefix, [dnl

cat > conftest.c <<\EOF

foo () { }

EOF

dnl

if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo" > /dev/null]);

then

  libc_dollar_prefix=yes

else

  libc_dollar_prefix=no

fi

rm -f conftest* ])

if test $libc_dollar_prefix = yes ; then

  AC_DEFINE(__SYMBOL_PREFIX, "$")

else

  AC_DEFINE(__SYMBOL_PREFIX, "")

fi

LIB_AC_PROG_CC

AS=${AS-as}

AC_SUBST(AS)

AR=${AR-ar}

AC_SUBST(AR)

LD=${LD-ld}

AC_SUBST(LD)

AC_PROG_RANLIB

host_makefile_frag=${srcdir}/../config/default.mh

dnl We have to assign the same value to other variables because autoconf

dnl doesn't provide a mechanism to substitute a replacement keyword with

dnl arbitrary data or pathnames.

dnl

host_makefile_frag_path=$host_makefile_frag

AC_SUBST(host_makefile_frag_path)

AC_SUBST_FILE(host_makefile_frag)

AC_OUTPUT(Makefile,

ac_file=Makefile . ${libgloss_topdir}/config-ml.in,

srcdir=${srcdir}

target=${target}

ac_configure_args="${ac_configure_args} --enable-multilib"

CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}

libgloss_topdir=${libgloss_topdir}

)