[thirdparty/gcc.git] / libiberty / configure.in

dnl Process this file with autoconf to produce a configure script

AC_PREREQ(2.12.1)
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 $ac_cv_prog_gcc = yes; then
  GCC=yes
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
  ac_test_CFLAGS="${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_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)
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 random"
funcs="$funcs rename"
funcs="$funcs rindex"
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"

# 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 random rename rindex sigsetmask strcasecmp)
  AC_CHECK_FUNCS(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)
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
    ;;

  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=${libiberty_topdir}
)
Commit	Line	Data
3affd5f0	1	dnl Process this file with autoconf to produce a configure script
6599da04	2
35a6cd99	3	AC_PREREQ(2.12.1)
3affd5f0	4	AC_INIT(pexecute.c)
6599da04	5
3affd5f0 JL	6	dnl We use these options to decide which functions to include.
3affd5f0 JL	7	AC_ARG_WITH(target-subdir,
ca6b370d JL	8	[ --with-target-subdir=SUBDIR Configuring in a subdirectory])
	9	AC_ARG_WITH(cross-host,
	10	[ --with-cross-host=HOST Configuring with a cross compiler])
3affd5f0 JL	11	AC_ARG_WITH(newlib,
3affd5f0 JL	12	[ --with-newlib Configuring with newlib])
6599da04	13
3affd5f0 JL	14	if test "${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 $ac_cv_prog_gcc = yes; then
	57	GCC=yes
	58	dnl Check whether -g works, even if CFLAGS is set, in case the package
	59	dnl plays around with CFLAGS (such as to build both debugging and
	60	dnl normal versions of a library), tasteless as that idea is.
	61	ac_test_CFLAGS="${CFLAGS+set}"
	62	ac_save_CFLAGS="$CFLAGS"
	63	CFLAGS=
	64	AC_PROG_CC_G
	65	if test "$ac_test_CFLAGS" = set; then
	66	CFLAGS="$ac_save_CFLAGS"
	67	elif test $ac_cv_prog_cc_g = yes; then
	68	CFLAGS="-g -O2"
	69	else
	70	CFLAGS="-O2"
	71	fi
	72	else
	73	GCC=
	74	test "${CFLAGS+set}" = set \|\| CFLAGS="-g"
	75	fi
	76	])
	77
78	LIB_AC_PROG_CC
79
80	AC_ISC_POSIX
81
82	dnl When we start using libtool:
83	dnl Default to a non shared library. This may be overridden by the
84	dnl configure option --enable-shared.
85	dnl AM_DISABLE_SHARED
86
87	dnl When we start using libtool:
88	dnl AM_PROG_LIBTOOL
89
90	dnl When we start using automake:
91	dnl AM_CONFIG_HEADER(config.h:config.in)
92	AC_CONFIG_HEADER(config.h:config.in)
93
94	dnl When we start using automake:
95	dnl AM_MAINTAINER_MODE
dd8f3ed5	96	dnl AC_EXEEXT
3affd5f0 JL	97
	98	dnl When we start using automake:
	99	dnl AM_PROG_INSTALL
	100	AC_PROG_INSTALL
6599da04 JM	101
	102	. ${srcdir}/config.table
	103	host_makefile_frag=${frag}
3affd5f0 JL	104	AC_SUBST_FILE(host_makefile_frag)
	105
	106	# It's OK to check for header files. Although the compiler may not be
	107	# able to link anything, it had better be able to at least compile
	108	# something.
6a071f4a	109	AC_CHECK_HEADERS(sys/file.h sys/param.h stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h)
a6458d1d	110	AC_HEADER_SYS_WAIT
6599da04	111
3affd5f0 JL	112	# This is the list of functions which libiberty will provide if they
	113	# are not available on the host.
	114
	115	funcs="asprintf"
	116	funcs="$funcs atexit"
	117	funcs="$funcs basename"
	118	funcs="$funcs bcmp"
	119	funcs="$funcs bcopy"
	120	funcs="$funcs bzero"
a9acf741	121	funcs="$funcs calloc"
3affd5f0 JL	122	funcs="$funcs clock"
	123	funcs="$funcs getcwd"
	124	funcs="$funcs getpagesize"
	125	funcs="$funcs index"
	126	funcs="$funcs insque"
	127	funcs="$funcs memchr"
	128	funcs="$funcs memcmp"
	129	funcs="$funcs memcpy"
	130	funcs="$funcs memmove"
	131	funcs="$funcs memset"
687361c8	132	funcs="$funcs mkstemps"
3affd5f0 JL	133	funcs="$funcs random"
	134	funcs="$funcs rename"
	135	funcs="$funcs rindex"
	136	funcs="$funcs sigsetmask"
	137	funcs="$funcs strcasecmp"
	138	funcs="$funcs strchr"
	139	funcs="$funcs strdup"
	140	funcs="$funcs strncasecmp"
	141	funcs="$funcs strrchr"
	142	funcs="$funcs strstr"
	143	funcs="$funcs strtod"
	144	funcs="$funcs strtol"
	145	funcs="$funcs strtoul"
	146	funcs="$funcs tmpnam"
	147	funcs="$funcs vasprintf"
	148	funcs="$funcs vfprintf"
	149	funcs="$funcs vprintf"
	150	funcs="$funcs vsprintf"
	151	funcs="$funcs waitpid"
	152
	153	# Also in the old function.def file: alloca, vfork, getopt.
	154
	155	vars="sys_errlist sys_nerr sys_siglist"
	156
acbbd80a	157	checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk"
3affd5f0 JL	158
	159	# These are neither executed nor required, but they help keep
	160	# autoheader happy without adding a bunch of text to acconfig.h.
	161	if test "x" = "y"; then
a9acf741	162	AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd)
687361c8	163	AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
3affd5f0 JL	164	AC_CHECK_FUNCS(memset random rename rindex sigsetmask strcasecmp)
	165	AC_CHECK_FUNCS(strchr strdup strncasecmp strrchr strstr strtod strtol)
	166	AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
	167	AC_DEFINE(HAVE_SYS_ERRLIST)
	168	AC_DEFINE(HAVE_SYS_NERR)
	169	AC_DEFINE(HAVE_SYS_SIGLIST)
	170	AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
acbbd80a	171	AC_CHECK_FUNCS(sbrk)
6599da04 JM	172	fi
6599da04 JM	173
3affd5f0 JL	174	# For each of these functions, if the host does not provide the
	175	# function we want to put FN.o in LIBOBJS, and if the host does
	176	# provide the function, we want to define HAVE_FN in config.h. Also,
	177	# if the host does not provide alloca, we set ALLOCA to alloca.o
	178
	179	setobjs=
7c72138a	180	CHECK=
3affd5f0 JL	181	if test -n "${with_target_subdir}"; then
3affd5f0 JL	182
ca6b370d	183	# We are being configured as a target library. AC_REPLACE_FUNCS
3affd5f0	184	# may not work correctly, because the compiler may not be able to
ca6b370d JL	185	# link executables. Note that we may still be being configured
ca6b370d JL	186	# native.
3affd5f0 JL	187
	188	# If we are being configured for newlib, we know which functions
	189	# newlib provide and which ones we will be expected to provide.
	190
	191	if test "x${with_newlib}" = "xyes"; then
	192	ALLOCA="alloca.o"
ca6b370d	193	LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
3affd5f0 JL	194
	195	for f in $funcs; do
	196	case "$f" in
ca6b370d	197	asprintf \| basename \| insque \| random \| strdup \| vasprintf)
3affd5f0 JL	198	;;
	199	*)
	200	n=HAVE_`echo $f \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	201	AC_DEFINE_UNQUOTED($n)
	202	;;
	203	esac
	204	done
	205
	206	# newlib doesnt provide any of the variables in $vars, so we
	207	# dont have to check them here.
	208
ca6b370d	209	# Of the functions in $checkfuncs, newlib only has strerror.
3affd5f0 JL	210	AC_DEFINE(HAVE_STRERROR)
	211
	212	setobjs=yes
	213
	214	fi
7c72138a TT	215
	216	else
	217
	218	# Not a target library, so we set things up to run the test suite.
	219	CHECK=check-cplus-dem
	220
3affd5f0 JL	221	fi
3affd5f0 JL	222
7c72138a TT	223	AC_SUBST(CHECK)
7c72138a TT	224
3affd5f0 JL	225	if test -z "${setobjs}"; then
	226	case "${host}" in
	227
	228	--vxworks*)
	229	# Handle VxWorks configuration specially, since on VxWorks the
	230	# libraries are actually on the target board, not in the file
	231	# system.
	232	LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
	233	LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
	234	for f in $funcs; do
	235	case "$f" in
	236	basename \| getpagesize \| insque \| random \| strcasecmp)
	237	;;
	238	strncasecmp \| strdup \| vfork \| waitpid \| vasprintf)
	239	;;
	240	*)
	241	n=HAVE_`echo $f \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	242	AC_DEFINE_UNQUOTED($n)
	243	;;
	244	esac
	245	done
	246
	247	# VxWorks doesn't provide any of the variables in $vars, so we
	248	# don't have to check them here.
	249
	250	# Of the functions in $checkfuncs, VxWorks only has strerror.
	251	AC_DEFINE(HAVE_STRERROR)
	252
	253	setobjs=yes
	254	;;
	255
	256	esac
	257	fi
	258
	259	if test -z "${setobjs}"; then
	260
	261	case "${host}" in
	262
dd8f3ed5 GN	263	--cygwin*)
dd8f3ed5 GN	264	# The Cygwin library actually uses a couple of files from
3affd5f0	265	# libiberty when it is built. If we are building a native
dd8f3ed5	266	# Cygwin, and we run the tests, we will appear to have these
3affd5f0 JL	267	# files. However, when we go on to build winsup, we will wind up
	268	# with a library which does not have the files, since they should
	269	# have come from libiberty.
	270
	271	# We handle this by removing the functions the winsup library
	272	# provides from our shell variables, so that they appear to be
	273	# missing.
	274
	275	funcs="`echo $funcs \| sed -e 's/random//'`"
	276	LIBOBJS="$LIBOBJS random.o"
	277	vars="`echo $vars \| sed -e 's/sys_siglist//'`"
6391b50a	278	checkfuncs="`echo $checkfuncs \| sed -e 's/strsignal//' -e 's/psignal//'`"
3affd5f0 JL	279	;;
	280
	281	--mingw32*)
	282	# Under mingw32, sys_nerr and sys_errlist exist, but they are
	283	# macros, so the test below won't find them.
	284	vars="`echo $vars \| sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
	285	AC_DEFINE(HAVE_SYS_NERR)
	286	AC_DEFINE(HAVE_SYS_ERRLIST)
	287	;;
	288
89f602a7 MK	289	--uwin*)
	290	# Under some versions of uwin, vfork is notoriously buggy and the test
	291	# can hang configure; on other versions, vfork exists just as a stub.
	292	# FIXME: This should be removed once vfork in uwin's runtime is fixed.
	293	ac_cv_func_vfork_works=no
	294	;;
	295
3affd5f0 JL	296	esac
	297
	298	# We haven't set the list of objects yet. Use the standard autoconf
	299	# tests. This will only work if the compiler works.
	300	AC_PROG_CC_WORKS
	301	AC_REPLACE_FUNCS($funcs)
7dd88617 DT	302
	303	case "${host}" in
	304	--interix)
	305	# On Interix, it wrongly concludes that the MSVC compiler supports alloca.
	306	# (MSVC does on Win32, not on Interix.)
	307	# This should be temporary.
	308
	309	ac_cv_header_alloca_h=no
	310	ac_cv_func_alloca_works=no
	311	ALLOCA=alloca.o
	312	cat >> confdefs.h <<\EOF
	313	#define C_ALLOCA 1
	314	EOF
	315	cat >> confdefs.h <<EOF
	316	#define STACK_DIRECTION -1
	317	EOF
	318	;;
	319	*)
	320	AC_FUNC_ALLOCA
	321	;;
	322	esac
	323
3affd5f0 JL	324	AC_FUNC_VFORK
	325	if test $ac_cv_func_vfork_works = no; then
	326	LIBOBJS="$LIBOBJS vfork.o"
	327	fi
	328	for v in $vars; do
	329	AC_MSG_CHECKING([for $v])
	330	AC_CACHE_VAL(libiberty_cv_var_$v,
	331	[AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
	332	[eval "libiberty_cv_var_$v=yes"],
	333	[eval "libiberty_cv_var_$v=no"])])
	334	if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
	335	AC_MSG_RESULT(yes)
	336	n=HAVE_`echo $v \| tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
	337	AC_DEFINE_UNQUOTED($n)
6599da04	338	else
3affd5f0	339	AC_MSG_RESULT(no)
6599da04	340	fi
3affd5f0 JL	341	done
	342	AC_CHECK_FUNCS($checkfuncs)
	343	fi
	344
	345	# Install a library built with a cross compiler in $(tooldir) rather
	346	# than $(libdir).
ca6b370d	347	if test -z "${with_cross_host}"; then
3affd5f0 JL	348	INSTALL_DEST=libdir
	349	else
	350	INSTALL_DEST=tooldir
6599da04	351	fi
3affd5f0 JL	352	AC_SUBST(INSTALL_DEST)
	353
	354	# We need multilib support, but only if configuring for the target.
7c72138a	355	AC_OUTPUT(Makefile testsuite/Makefile,
3affd5f0 JL	356	[test -z "$CONFIG_HEADERS" \|\| echo timestamp > stamp-h
	357	if test -n "$CONFIG_FILES"; then
	358	if test -n "${with_target_subdir}"; then
	359	# FIXME: We shouldn't need to set ac_file
	360	ac_file=Makefile
	361	. ${libiberty_topdir}/config-ml.in
	362	fi
	363	fi],
	364	srcdir=${srcdir}
	365	host=${host}
	366	target=${target}
	367	with_target_subdir=${with_target_subdir}
	368	with_multisubdir=${with_multisubdir}
	369	ac_configure_args="--enable-multilib ${ac_configure_args}"
	370	CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
	371	libiberty_topdir=${libiberty_topdir}
	372	)