[deliverable/binutils-gdb.git] / libiberty / configure.in

dnl Process this file with autoconf to produce a configure script

AC_PREREQ(2.13)
AC_INIT(pexecute.c)

dnl We use these options to decide which functions to include.
AC_ARG_WITH(target-subdir,
[  --with-target-subdir=SUBDIR      Configuring in a subdirectory])
AC_ARG_WITH(cross-host,
[  --with-cross-host=HOST           Configuring with a cross compiler])
AC_ARG_WITH(newlib,
[  --with-newlib                    Configuring with newlib])

if test "${srcdir}" = "."; then
  if test -z "${with_target_subdir}"; then
    libiberty_topdir="${srcdir}/.."
  else
    if test "${with_target_subdir}" != "."; then
      libiberty_topdir="${srcdir}/${with_multisrctop}../.."
    else
      libiberty_topdir="${srcdir}/${with_multisrctop}.."
    fi
  fi
else
  libiberty_topdir="${srcdir}/.."
fi
AC_CONFIG_AUX_DIR($libiberty_topdir)

AC_CANONICAL_HOST

dnl When we start using automake:
dnl AM_INIT_AUTOMAKE(libiberty, 1.0)

dnl These must be called before AM_PROG_LIBTOOL, because it may want
dnl to call AC_CHECK_PROG.
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)

# 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([$0], [AC_PROG_CPP])dnl
AC_PROVIDE([AC_PROG_CC])
AC_CHECK_PROG(CC, gcc, gcc)
if test -z "$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 $ac_cv_prog_gcc = yes; then
  GCC=yes
  ac_libiberty_warn_cflags='-W -Wall -Wtraditional'
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
  ac_test_CFLAGS="${CFLAGS+set}"
  ac_save_CFLAGS="$CFLAGS"
  CFLAGS=
  AC_PROG_CC_G
  if test "$ac_test_CFLAGS" = set; then
    CFLAGS="$ac_save_CFLAGS"
  elif test $ac_cv_prog_cc_g = yes; then
    CFLAGS="-g -O2"
  else
    CFLAGS="-O2"
  fi
else
  GCC=
  ac_libiberty_warn_cflags=
  test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
])
AC_SUBST(ac_libiberty_warn_cflags)

LIB_AC_PROG_CC

AC_ISC_POSIX

dnl When we start using libtool:
dnl Default to a non shared library.  This may be overridden by the
dnl configure option --enable-shared.
dnl AM_DISABLE_SHARED

dnl When we start using libtool:
dnl AM_PROG_LIBTOOL

dnl When we start using automake:
dnl AM_CONFIG_HEADER(config.h:config.in)
AC_CONFIG_HEADER(config.h:config.in)

dnl When we start using automake:
dnl AM_MAINTAINER_MODE
dnl AC_EXEEXT

dnl When we start using automake:
dnl AM_PROG_INSTALL
AC_PROG_INSTALL

. ${srcdir}/config.table
host_makefile_frag=${frag}
AC_SUBST_FILE(host_makefile_frag)

# It's OK to check for header files.  Although the compiler may not be
# able to link anything, it had better be able to at least compile
# something.
AC_CHECK_HEADERS(sys/file.h sys/param.h stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h sys/stat.h)
AC_HEADER_SYS_WAIT

# This is the list of functions which libiberty will provide if they
# are not available on the host.

funcs="asprintf"
funcs="$funcs atexit"
funcs="$funcs basename"
funcs="$funcs bcmp"
funcs="$funcs bcopy"
funcs="$funcs bzero"
funcs="$funcs calloc"
funcs="$funcs clock"
funcs="$funcs getcwd"
funcs="$funcs getpagesize"
funcs="$funcs index"
funcs="$funcs insque"
funcs="$funcs memchr"
funcs="$funcs memcmp"
funcs="$funcs memcpy"
funcs="$funcs memmove"
funcs="$funcs memset"
funcs="$funcs mkstemps"
funcs="$funcs putenv"
funcs="$funcs random"
funcs="$funcs rename"
funcs="$funcs rindex"
funcs="$funcs setenv"
funcs="$funcs sigsetmask"
funcs="$funcs strcasecmp"
funcs="$funcs strchr"
funcs="$funcs strdup"
funcs="$funcs strncasecmp"
funcs="$funcs strrchr"
funcs="$funcs strstr"
funcs="$funcs strtod"
funcs="$funcs strtol"
funcs="$funcs strtoul"
funcs="$funcs tmpnam"
funcs="$funcs vasprintf"
funcs="$funcs vfprintf"
funcs="$funcs vprintf"
funcs="$funcs vsprintf"
funcs="$funcs waitpid"

# Also in the old function.def file: alloca, vfork, getopt.

vars="sys_errlist sys_nerr sys_siglist"

checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"

# These are neither executed nor required, but they help keep
# autoheader happy without adding a bunch of text to acconfig.h.
if test "x" = "y"; then
  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd)
  AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
  AC_CHECK_FUNCS(memset putenv random rename rindex sigsetmask strcasecmp)
  AC_CHECK_FUNCS(setenv strchr strdup strncasecmp strrchr strstr strtod strtol)
  AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
  AC_DEFINE(HAVE_SYS_ERRLIST)
  AC_DEFINE(HAVE_SYS_NERR)
  AC_DEFINE(HAVE_SYS_SIGLIST)
  AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
  AC_CHECK_FUNCS(sbrk gettimeofday)
fi

# For each of these functions, if the host does not provide the
# function we want to put FN.o in LIBOBJS, and if the host does
# provide the function, we want to define HAVE_FN in config.h.  Also,
# if the host does not provide alloca, we set ALLOCA to alloca.o

setobjs=
CHECK=
if test -n "${with_target_subdir}"; then

  # We are being configured as a target library.  AC_REPLACE_FUNCS
  # may not work correctly, because the compiler may not be able to
  # link executables.  Note that we may still be being configured
  # native.

  # If we are being configured for newlib, we know which functions
  # newlib provide and which ones we will be expected to provide.

  if test "x${with_newlib}" = "xyes"; then
    ALLOCA="alloca.o"
    LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"

    for f in $funcs; do
      case "$f" in
	asprintf | basename | insque | random | strdup | vasprintf)
	  ;;
	*)
	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	  AC_DEFINE_UNQUOTED($n)
	  ;;
      esac
    done

    # newlib doesnt provide any of the variables in $vars, so we
    # dont have to check them here.

    # Of the functions in $checkfuncs, newlib only has strerror.
    AC_DEFINE(HAVE_STRERROR)

    setobjs=yes

  fi

else

   # Not a target library, so we set things up to run the test suite.
   CHECK=check-cplus-dem

fi

AC_SUBST(CHECK)

if test -z "${setobjs}"; then
  case "${host}" in

  *-*-vxworks*)
    # Handle VxWorks configuration specially, since on VxWorks the
    # libraries are actually on the target board, not in the file
    # system.
    LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
    LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
    for f in $funcs; do
      case "$f" in
	basename | getpagesize | insque | random | strcasecmp)
	  ;;
	strncasecmp | strdup | vfork | waitpid | vasprintf)
	  ;;
	*)
	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	  AC_DEFINE_UNQUOTED($n)
	  ;;
      esac
    done

    # VxWorks doesn't provide any of the variables in $vars, so we
    # don't have to check them here.

    # Of the functions in $checkfuncs, VxWorks only has strerror.
    AC_DEFINE(HAVE_STRERROR)

    setobjs=yes
    ;;

  esac
fi

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

  case "${host}" in

  *-*-cygwin*)
    # The Cygwin library actually uses a couple of files from
    # libiberty when it is built.  If we are building a native
    # Cygwin, and we run the tests, we will appear to have these
    # files.  However, when we go on to build winsup, we will wind up
    # with a library which does not have the files, since they should
    # have come from libiberty.

    # We handle this by removing the functions the winsup library
    # provides from our shell variables, so that they appear to be
    # missing.

    funcs="`echo $funcs | sed -e 's/random//'`"
    LIBOBJS="$LIBOBJS random.o"
    vars="`echo $vars | sed -e 's/sys_siglist//'`"
    checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
    ;;

  *-*-mingw32*)
    # Under mingw32, sys_nerr and sys_errlist exist, but they are
    # macros, so the test below won't find them.
    vars="`echo $vars | sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
    AC_DEFINE(HAVE_SYS_NERR)
    AC_DEFINE(HAVE_SYS_ERRLIST)
    ;;

  *-*-uwin*)
    # Under some versions of uwin, vfork is notoriously buggy and the test 
    # can hang configure; on other versions, vfork exists just as a stub.
    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
    ac_cv_func_vfork_works=no
    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
    # macros (actually, these are imported from a DLL, but the end effect 
    # is the same), so the test below won't find them.
    AC_DEFINE(HAVE_SYS_NERR)
    AC_DEFINE(HAVE_SYS_ERRLIST)
    ;;

  esac

  # We haven't set the list of objects yet.  Use the standard autoconf
  # tests.  This will only work if the compiler works.
  AC_PROG_CC_WORKS
  AC_REPLACE_FUNCS($funcs)

  case "${host}" in
  *-*-interix)
    # On Interix, it wrongly concludes that the MSVC compiler supports alloca.
    # (MSVC does on Win32, not on Interix.)
    # This should be temporary.

    ac_cv_header_alloca_h=no
    ac_cv_func_alloca_works=no
    ALLOCA=alloca.o
    cat >> confdefs.h <<\EOF
#define C_ALLOCA 1
EOF
    cat >> confdefs.h <<EOF
#define STACK_DIRECTION -1
EOF
    ;;
  *)
    AC_FUNC_ALLOCA
    ;;
  esac

  AC_FUNC_VFORK
  if test $ac_cv_func_vfork_works = no; then
    LIBOBJS="$LIBOBJS vfork.o"
  fi
  for v in $vars; do
    AC_MSG_CHECKING([for $v])
    AC_CACHE_VAL(libiberty_cv_var_$v,
      [AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
		   [eval "libiberty_cv_var_$v=yes"],
		   [eval "libiberty_cv_var_$v=no"])])
    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
      AC_MSG_RESULT(yes)
      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
      AC_DEFINE_UNQUOTED($n)
    else
      AC_MSG_RESULT(no)
    fi
  done
  AC_CHECK_FUNCS($checkfuncs)
fi

# Install a library built with a cross compiler in $(tooldir) rather
# than $(libdir).
if test -z "${with_cross_host}"; then
  INSTALL_DEST=libdir
else
  INSTALL_DEST=tooldir
fi
AC_SUBST(INSTALL_DEST)

# We need multilib support, but only if configuring for the target.
AC_OUTPUT(Makefile testsuite/Makefile,
[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
if test -n "$CONFIG_FILES"; then
  if test -n "${with_target_subdir}"; then
    # FIXME: We shouldn't need to set ac_file
    ac_file=Makefile
    . ${libiberty_topdir}/config-ml.in
  fi
fi],
srcdir=${srcdir}
host=${host}
target=${target}
with_target_subdir=${with_target_subdir}
with_multisubdir=${with_multisubdir}
ac_configure_args="--enable-multilib ${ac_configure_args}"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
libiberty_topdir=${libiberty_topdir}
)
Commit	Line	Data
252b5132 RH	1	dnl Process this file with autoconf to produce a configure script
252b5132 RH	2
0c0a36a4	3	AC_PREREQ(2.13)
252b5132 RH	4	AC_INIT(pexecute.c)
	5
	6	dnl We use these options to decide which functions to include.
	7	AC_ARG_WITH(target-subdir,
	8	[ --with-target-subdir=SUBDIR Configuring in a subdirectory])
	9	AC_ARG_WITH(cross-host,
	10	[ --with-cross-host=HOST Configuring with a cross compiler])
	11	AC_ARG_WITH(newlib,
	12	[ --with-newlib Configuring with newlib])
	13
	14	if test "${srcdir}" = "."; then
	15	if test -z "${with_target_subdir}"; then
	16	libiberty_topdir="${srcdir}/.."
	17	else
	18	if test "${with_target_subdir}" != "."; then
	19	libiberty_topdir="${srcdir}/${with_multisrctop}../.."
	20	else
	21	libiberty_topdir="${srcdir}/${with_multisrctop}.."
	22	fi
	23	fi
	24	else
	25	libiberty_topdir="${srcdir}/.."
	26	fi
	27	AC_CONFIG_AUX_DIR($libiberty_topdir)
	28
	29	AC_CANONICAL_HOST
	30
	31	dnl When we start using automake:
	32	dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
	33
	34	dnl These must be called before AM_PROG_LIBTOOL, because it may want
	35	dnl to call AC_CHECK_PROG.
	36	AC_CHECK_TOOL(AR, ar)
	37	AC_CHECK_TOOL(RANLIB, ranlib, :)
	38
	39	# FIXME: We temporarily define our own version of AC_PROG_CC. This is
	40	# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
	41	# are probably using a cross compiler, which will not be able to fully
	42	# link an executable. This should really be fixed in autoconf
	43	# itself.
	44
	45	AC_DEFUN(LIB_AC_PROG_CC,
	46	[AC_BEFORE([$0], [AC_PROG_CPP])dnl
	47	AC_PROVIDE([AC_PROG_CC])
	48	AC_CHECK_PROG(CC, gcc, gcc)
	49	if test -z "$CC"; then
	50	AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
	51	test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
	52	fi
	53
	54	AC_PROG_CC_GNU
	55
	56	if test $ac_cv_prog_gcc = yes; then
	57	GCC=yes
0c0a36a4	58	ac_libiberty_warn_cflags='-W -Wall -Wtraditional'
252b5132 RH	59	dnl Check whether -g works, even if CFLAGS is set, in case the package
	60	dnl plays around with CFLAGS (such as to build both debugging and
	61	dnl normal versions of a library), tasteless as that idea is.
	62	ac_test_CFLAGS="${CFLAGS+set}"
	63	ac_save_CFLAGS="$CFLAGS"
	64	CFLAGS=
	65	AC_PROG_CC_G
	66	if test "$ac_test_CFLAGS" = set; then
	67	CFLAGS="$ac_save_CFLAGS"
	68	elif test $ac_cv_prog_cc_g = yes; then
	69	CFLAGS="-g -O2"
	70	else
	71	CFLAGS="-O2"
	72	fi
	73	else
	74	GCC=
0c0a36a4	75	ac_libiberty_warn_cflags=
252b5132 RH	76	test "${CFLAGS+set}" = set \|\| CFLAGS="-g"
	77	fi
	78	])
0c0a36a4	79	AC_SUBST(ac_libiberty_warn_cflags)
252b5132 RH	80
	81	LIB_AC_PROG_CC
	82
	83	AC_ISC_POSIX
	84
	85	dnl When we start using libtool:
	86	dnl Default to a non shared library. This may be overridden by the
	87	dnl configure option --enable-shared.
	88	dnl AM_DISABLE_SHARED
	89
	90	dnl When we start using libtool:
	91	dnl AM_PROG_LIBTOOL
	92
	93	dnl When we start using automake:
	94	dnl AM_CONFIG_HEADER(config.h:config.in)
	95	AC_CONFIG_HEADER(config.h:config.in)
	96
	97	dnl When we start using automake:
	98	dnl AM_MAINTAINER_MODE
	99	dnl AC_EXEEXT
	100
	101	dnl When we start using automake:
	102	dnl AM_PROG_INSTALL
	103	AC_PROG_INSTALL
	104
	105	. ${srcdir}/config.table
	106	host_makefile_frag=${frag}
	107	AC_SUBST_FILE(host_makefile_frag)
	108
	109	# It's OK to check for header files. Although the compiler may not be
	110	# able to link anything, it had better be able to at least compile
	111	# something.
0c0a36a4	112	AC_CHECK_HEADERS(sys/file.h sys/param.h stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h sys/stat.h)
252b5132 RH	113	AC_HEADER_SYS_WAIT
	114
	115	# This is the list of functions which libiberty will provide if they
	116	# are not available on the host.
	117
	118	funcs="asprintf"
	119	funcs="$funcs atexit"
	120	funcs="$funcs basename"
	121	funcs="$funcs bcmp"
	122	funcs="$funcs bcopy"
	123	funcs="$funcs bzero"
	124	funcs="$funcs calloc"
	125	funcs="$funcs clock"
	126	funcs="$funcs getcwd"
	127	funcs="$funcs getpagesize"
	128	funcs="$funcs index"
	129	funcs="$funcs insque"
	130	funcs="$funcs memchr"
	131	funcs="$funcs memcmp"
	132	funcs="$funcs memcpy"
	133	funcs="$funcs memmove"
	134	funcs="$funcs memset"
	135	funcs="$funcs mkstemps"
0c0a36a4	136	funcs="$funcs putenv"
252b5132 RH	137	funcs="$funcs random"
	138	funcs="$funcs rename"
	139	funcs="$funcs rindex"
0c0a36a4	140	funcs="$funcs setenv"
252b5132 RH	141	funcs="$funcs sigsetmask"
	142	funcs="$funcs strcasecmp"
	143	funcs="$funcs strchr"
	144	funcs="$funcs strdup"
	145	funcs="$funcs strncasecmp"
	146	funcs="$funcs strrchr"
	147	funcs="$funcs strstr"
	148	funcs="$funcs strtod"
	149	funcs="$funcs strtol"
	150	funcs="$funcs strtoul"
	151	funcs="$funcs tmpnam"
	152	funcs="$funcs vasprintf"
	153	funcs="$funcs vfprintf"
	154	funcs="$funcs vprintf"
	155	funcs="$funcs vsprintf"
	156	funcs="$funcs waitpid"
	157
	158	# Also in the old function.def file: alloca, vfork, getopt.
	159
	160	vars="sys_errlist sys_nerr sys_siglist"
	161
0c0a36a4	162	checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
252b5132 RH	163
	164	# These are neither executed nor required, but they help keep
	165	# autoheader happy without adding a bunch of text to acconfig.h.
	166	if test "x" = "y"; then
	167	AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd)
	168	AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
0c0a36a4 ILT	169	AC_CHECK_FUNCS(memset putenv random rename rindex sigsetmask strcasecmp)
0c0a36a4 ILT	170	AC_CHECK_FUNCS(setenv strchr strdup strncasecmp strrchr strstr strtod strtol)
252b5132 RH	171	AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
	172	AC_DEFINE(HAVE_SYS_ERRLIST)
	173	AC_DEFINE(HAVE_SYS_NERR)
	174	AC_DEFINE(HAVE_SYS_SIGLIST)
	175	AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
0c0a36a4	176	AC_CHECK_FUNCS(sbrk gettimeofday)
252b5132 RH	177	fi
	178
	179	# For each of these functions, if the host does not provide the
	180	# function we want to put FN.o in LIBOBJS, and if the host does
	181	# provide the function, we want to define HAVE_FN in config.h. Also,
	182	# if the host does not provide alloca, we set ALLOCA to alloca.o
	183
	184	setobjs=
0c0a36a4	185	CHECK=
252b5132 RH	186	if test -n "${with_target_subdir}"; then
	187
	188	# We are being configured as a target library. AC_REPLACE_FUNCS
	189	# may not work correctly, because the compiler may not be able to
	190	# link executables. Note that we may still be being configured
	191	# native.
	192
	193	# If we are being configured for newlib, we know which functions
	194	# newlib provide and which ones we will be expected to provide.
	195
	196	if test "x${with_newlib}" = "xyes"; then
	197	ALLOCA="alloca.o"
	198	LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
	199
	200	for f in $funcs; do
	201	case "$f" in
	202	asprintf \| basename \| insque \| random \| strdup \| vasprintf)
	203	;;
	204	*)
	205	n=HAVE_`echo $f \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	206	AC_DEFINE_UNQUOTED($n)
	207	;;
	208	esac
	209	done
	210
	211	# newlib doesnt provide any of the variables in $vars, so we
	212	# dont have to check them here.
	213
	214	# Of the functions in $checkfuncs, newlib only has strerror.
	215	AC_DEFINE(HAVE_STRERROR)
	216
	217	setobjs=yes
	218
	219	fi
0c0a36a4 ILT	220
	221	else
	222
	223	# Not a target library, so we set things up to run the test suite.
	224	CHECK=check-cplus-dem
	225
252b5132 RH	226	fi
252b5132 RH	227
0c0a36a4 ILT	228	AC_SUBST(CHECK)
0c0a36a4 ILT	229
252b5132 RH	230	if test -z "${setobjs}"; then
	231	case "${host}" in
	232
	233	--vxworks*)
	234	# Handle VxWorks configuration specially, since on VxWorks the
	235	# libraries are actually on the target board, not in the file
	236	# system.
	237	LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
	238	LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
	239	for f in $funcs; do
	240	case "$f" in
	241	basename \| getpagesize \| insque \| random \| strcasecmp)
	242	;;
	243	strncasecmp \| strdup \| vfork \| waitpid \| vasprintf)
	244	;;
	245	*)
	246	n=HAVE_`echo $f \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	247	AC_DEFINE_UNQUOTED($n)
	248	;;
	249	esac
	250	done
	251
	252	# VxWorks doesn't provide any of the variables in $vars, so we
	253	# don't have to check them here.
	254
	255	# Of the functions in $checkfuncs, VxWorks only has strerror.
	256	AC_DEFINE(HAVE_STRERROR)
	257
	258	setobjs=yes
	259	;;
	260
	261	esac
	262	fi
	263
	264	if test -z "${setobjs}"; then
	265
	266	case "${host}" in
	267
	268	--cygwin*)
	269	# The Cygwin library actually uses a couple of files from
	270	# libiberty when it is built. If we are building a native
	271	# Cygwin, and we run the tests, we will appear to have these
	272	# files. However, when we go on to build winsup, we will wind up
	273	# with a library which does not have the files, since they should
	274	# have come from libiberty.
	275
	276	# We handle this by removing the functions the winsup library
	277	# provides from our shell variables, so that they appear to be
	278	# missing.
	279
	280	funcs="`echo $funcs \| sed -e 's/random//'`"
	281	LIBOBJS="$LIBOBJS random.o"
	282	vars="`echo $vars \| sed -e 's/sys_siglist//'`"
	283	checkfuncs="`echo $checkfuncs \| sed -e 's/strsignal//' -e 's/psignal//'`"
	284	;;
	285
	286	--mingw32*)
	287	# Under mingw32, sys_nerr and sys_errlist exist, but they are
	288	# macros, so the test below won't find them.
	289	vars="`echo $vars \| sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
	290	AC_DEFINE(HAVE_SYS_NERR)
	291	AC_DEFINE(HAVE_SYS_ERRLIST)
	292	;;
	293
294	--uwin*)
295	# Under some versions of uwin, vfork is notoriously buggy and the test
296	# can hang configure; on other versions, vfork exists just as a stub.
297	# FIXME: This should be removed once vfork in uwin's runtime is fixed.
298	ac_cv_func_vfork_works=no
0c0a36a4 ILT	299	# Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
	300	# macros (actually, these are imported from a DLL, but the end effect
	301	# is the same), so the test below won't find them.
	302	AC_DEFINE(HAVE_SYS_NERR)
	303	AC_DEFINE(HAVE_SYS_ERRLIST)
252b5132 RH	304	;;
	305
	306	esac
	307
	308	# We haven't set the list of objects yet. Use the standard autoconf
	309	# tests. This will only work if the compiler works.
	310	AC_PROG_CC_WORKS
	311	AC_REPLACE_FUNCS($funcs)
0c0a36a4 ILT	312
	313	case "${host}" in
	314	--interix)
	315	# On Interix, it wrongly concludes that the MSVC compiler supports alloca.
	316	# (MSVC does on Win32, not on Interix.)
	317	# This should be temporary.
	318
	319	ac_cv_header_alloca_h=no
	320	ac_cv_func_alloca_works=no
	321	ALLOCA=alloca.o
	322	cat >> confdefs.h <<\EOF
	323	#define C_ALLOCA 1
	324	EOF
	325	cat >> confdefs.h <<EOF
	326	#define STACK_DIRECTION -1
	327	EOF
	328	;;
	329	*)
	330	AC_FUNC_ALLOCA
	331	;;
	332	esac
	333
252b5132 RH	334	AC_FUNC_VFORK
	335	if test $ac_cv_func_vfork_works = no; then
	336	LIBOBJS="$LIBOBJS vfork.o"
	337	fi
	338	for v in $vars; do
	339	AC_MSG_CHECKING([for $v])
	340	AC_CACHE_VAL(libiberty_cv_var_$v,
	341	[AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
	342	[eval "libiberty_cv_var_$v=yes"],
	343	[eval "libiberty_cv_var_$v=no"])])
	344	if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
	345	AC_MSG_RESULT(yes)
	346	n=HAVE_`echo $v \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	347	AC_DEFINE_UNQUOTED($n)
	348	else
	349	AC_MSG_RESULT(no)
	350	fi
	351	done
	352	AC_CHECK_FUNCS($checkfuncs)
	353	fi
	354
	355	# Install a library built with a cross compiler in $(tooldir) rather
	356	# than $(libdir).
	357	if test -z "${with_cross_host}"; then
	358	INSTALL_DEST=libdir
	359	else
	360	INSTALL_DEST=tooldir
	361	fi
	362	AC_SUBST(INSTALL_DEST)
	363
	364	# We need multilib support, but only if configuring for the target.
0c0a36a4	365	AC_OUTPUT(Makefile testsuite/Makefile,
252b5132 RH	366	[test -z "$CONFIG_HEADERS" \|\| echo timestamp > stamp-h
	367	if test -n "$CONFIG_FILES"; then
	368	if test -n "${with_target_subdir}"; then
	369	# FIXME: We shouldn't need to set ac_file
	370	ac_file=Makefile
	371	. ${libiberty_topdir}/config-ml.in
	372	fi
	373	fi],
	374	srcdir=${srcdir}
	375	host=${host}
	376	target=${target}
	377	with_target_subdir=${with_target_subdir}
	378	with_multisubdir=${with_multisubdir}
	379	ac_configure_args="--enable-multilib ${ac_configure_args}"
	380	CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
	381	libiberty_topdir=${libiberty_topdir}
	382	)