libiberty/configure.in

   1 dnl Process this file with autoconf to produce a configure script
   2
   3 AC_PREREQ(2.13)
   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 dnl Very limited version of automake's enable-maintainer-mode
  30
  31 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  32   dnl maintainer-mode is disabled by default
  33   AC_ARG_ENABLE(maintainer-mode,
  34 [  --enable-maintainer-mode
  35                           enable make rules and dependencies not useful
  36                           (and sometimes confusing) to the casual installer],
  37       maintainer_mode=$enableval,
  38       maintainer_mode=no)
  39
  40 AC_MSG_RESULT($maintainer_mode)
  41
  42 if test "$maintainer_mode" = "yes"; then
  43   MAINT=''
  44   NOTMAINT='#'
  45 else
  46   MAINT='#'
  47   NOTMAINT=''
  48 fi
  49 AC_SUBST(MAINT)dnl
  50 AC_SUBST(NOTMAINT)dnl
  51
  52 # Do we have a single-tree copy of texinfo?
  53 if test -f $srcdir/../texinfo/Makefile.in; then
  54   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
  55   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
  56 else
  57   AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  58 fi
  59 if test x"$MAKEINFO" = x""; then
  60   BUILD_INFO=
  61 else
  62   BUILD_INFO=info
  63 fi
  64 AC_SUBST(BUILD_INFO)
  65
  66 AC_CHECK_PROG(PERL, perl, perl, )
  67 if test x"$PERL" = x""; then
  68   HAVE_PERL='#'
  69 else
  70   HAVE_PERL=''
  71 fi
  72 AC_SUBST(HAVE_PERL)
  73
  74 AC_CANONICAL_HOST
  75
  76 dnl When we start using automake:
  77 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
  78
  79 dnl These must be called before AM_PROG_LIBTOOL, because it may want
  80 dnl to call AC_CHECK_PROG.
  81 AC_CHECK_TOOL(AR, ar)
  82 AC_CHECK_TOOL(RANLIB, ranlib, :)
  83
  84 LIB_AC_PROG_CC
  85
  86 AC_ISC_POSIX
  87 AC_C_CONST
  88 AC_C_INLINE
  89
  90 dnl When we start using libtool:
  91 dnl Default to a non shared library.  This may be overridden by the
  92 dnl configure option --enable-shared.
  93 dnl AM_DISABLE_SHARED
  94
  95 dnl When we start using libtool:
  96 dnl AM_PROG_LIBTOOL
  97
  98 dnl When we start using automake:
  99 dnl AM_CONFIG_HEADER(config.h:config.in)
 100 AC_CONFIG_HEADER(config.h:config.in)
 101
 102 dnl When we start using automake:
 103 dnl AM_MAINTAINER_MODE
 104 dnl AC_EXEEXT
 105
 106 dnl When we start using automake:
 107 dnl AM_PROG_INSTALL
 108 AC_PROG_INSTALL
 109
 110 . ${srcdir}/config.table
 111 host_makefile_frag=${frag}
 112 AC_SUBST_FILE(host_makefile_frag)
 113
 114 # It's OK to check for header files.  Although the compiler may not be
 115 # able to link anything, it had better be able to at least compile
 116 # something.
 117 AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h)
 118 AC_HEADER_SYS_WAIT
 119 AC_HEADER_TIME
 120
 121 libiberty_AC_DECLARE_ERRNO
 122
 123 # This is the list of functions which libiberty will provide if they
 124 # are not available on the host.
 125
 126 funcs="asprintf"
 127 funcs="$funcs atexit"
 128 funcs="$funcs basename"
 129 funcs="$funcs bcmp"
 130 funcs="$funcs bcopy"
 131 funcs="$funcs bsearch"
 132 funcs="$funcs bzero"
 133 funcs="$funcs calloc"
 134 funcs="$funcs clock"
 135 funcs="$funcs ffs"
 136 funcs="$funcs getcwd"
 137 funcs="$funcs getpagesize"
 138 funcs="$funcs index"
 139 funcs="$funcs insque"
 140 funcs="$funcs memchr"
 141 funcs="$funcs memcmp"
 142 funcs="$funcs memcpy"
 143 funcs="$funcs memmove"
 144 funcs="$funcs memset"
 145 funcs="$funcs mkstemps"
 146 funcs="$funcs putenv"
 147 funcs="$funcs random"
 148 funcs="$funcs rename"
 149 funcs="$funcs rindex"
 150 funcs="$funcs setenv"
 151 funcs="$funcs sigsetmask"
 152 funcs="$funcs strcasecmp"
 153 funcs="$funcs strchr"
 154 funcs="$funcs strdup"
 155 funcs="$funcs strncasecmp"
 156 funcs="$funcs strrchr"
 157 funcs="$funcs strstr"
 158 funcs="$funcs strtod"
 159 funcs="$funcs strtol"
 160 funcs="$funcs strtoul"
 161 funcs="$funcs tmpnam"
 162 funcs="$funcs vasprintf"
 163 funcs="$funcs vfprintf"
 164 funcs="$funcs vprintf"
 165 funcs="$funcs vsprintf"
 166 funcs="$funcs waitpid"
 167
 168 # Also in the old function.def file: alloca, vfork, getopt.
 169
 170 vars="sys_errlist sys_nerr sys_siglist"
 171
 172 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 173
 174 # These are neither executed nor required, but they help keep
 175 # autoheader happy without adding a bunch of text to acconfig.h.
 176 if test "x" = "y"; then
 177   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock)
 178   AC_CHECK_FUNCS(getcwd getpagesize index insque mkstemps memchr memcmp memcpy)
 179   AC_CHECK_FUNCS(memmove memset putenv random rename rindex sigsetmask)
 180   AC_CHECK_FUNCS(strcasecmp setenv strchr strdup strncasecmp strrchr strstr)
 181   AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
 182   AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
 183   AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
 184   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 185   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 186   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 187 fi
 188
 189 # For each of these functions, if the host does not provide the
 190 # function we want to put FN.o in LIBOBJS, and if the host does
 191 # provide the function, we want to define HAVE_FN in config.h.
 192
 193 setobjs=
 194 CHECK=
 195 if test -n "${with_target_subdir}"; then
 196
 197   # We are being configured as a target library.  AC_REPLACE_FUNCS
 198   # may not work correctly, because the compiler may not be able to
 199   # link executables.  Note that we may still be being configured
 200   # native.
 201
 202   # If we are being configured for newlib, we know which functions
 203   # newlib provide and which ones we will be expected to provide.
 204
 205   if test "x${with_newlib}" = "xyes"; then
 206     LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
 207
 208     for f in $funcs; do
 209       case "$f" in
 210         asprintf | basename | insque | random | strdup | vasprintf)
 211           ;;
 212         *)
 213           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 214           AC_DEFINE_UNQUOTED($n)
 215           ;;
 216       esac
 217     done
 218
 219     # newlib doesnt provide any of the variables in $vars, so we
 220     # dont have to check them here.
 221
 222     # Of the functions in $checkfuncs, newlib only has strerror.
 223     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 224
 225     setobjs=yes
 226
 227   fi
 228
 229 else
 230
 231    # Not a target library, so we set things up to run the test suite.
 232    CHECK=check-cplus-dem
 233
 234 fi
 235
 236 AC_SUBST(CHECK)
 237
 238 case "${host}" in
 239   *-*-cygwin*)
 240     AC_DEFINE(HAVE_SYS_ERRLIST)
 241     AC_DEFINE(HAVE_SYS_NERR)
 242     ;;
 243 esac
 244
 245 if test -z "${setobjs}"; then
 246   case "${host}" in
 247
 248   *-*-vxworks*)
 249     # Handle VxWorks configuration specially, since on VxWorks the
 250     # libraries are actually on the target board, not in the file
 251     # system.
 252     LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
 253     LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
 254     for f in $funcs; do
 255       case "$f" in
 256         basename | getpagesize | insque | random | strcasecmp)
 257           ;;
 258         strncasecmp | strdup | vfork | waitpid | vasprintf)
 259           ;;
 260         *)
 261           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 262           AC_DEFINE_UNQUOTED($n)
 263           ;;
 264       esac
 265     done
 266
 267     # VxWorks doesn't provide any of the variables in $vars, so we
 268     # don't have to check them here.
 269
 270     # Of the functions in $checkfuncs, VxWorks only has strerror.
 271     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 272
 273     setobjs=yes
 274     ;;
 275
 276   esac
 277 fi
 278
 279 if test -z "${setobjs}"; then
 280
 281   case "${host}" in
 282
 283   *-*-cygwin*)
 284     # The Cygwin library actually uses a couple of files from
 285     # libiberty when it is built.  If we are building a native
 286     # Cygwin, and we run the tests, we will appear to have these
 287     # files.  However, when we go on to build winsup, we will wind up
 288     # with a library which does not have the files, since they should
 289     # have come from libiberty.
 290
 291     # We handle this by removing the functions the winsup library
 292     # provides from our shell variables, so that they appear to be
 293     # missing.
 294
 295     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 296
 297     if test -n "${with_target_subdir}"
 298     then
 299       funcs="`echo $funcs | sed -e 's/random//'`"
 300       LIBOBJS="$LIBOBJS random.o"
 301       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 302       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 303     fi
 304     ;;
 305
 306   *-*-mingw32*)
 307     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 308     # macros, so the test below won't find them.
 309     libiberty_cv_var_sys_nerr=yes
 310     libiberty_cv_var_sys_errlist=yes
 311     ;;
 312
 313   *-*-uwin*)
 314     # Under some versions of uwin, vfork is notoriously buggy and the test
 315     # can hang configure; on other versions, vfork exists just as a stub.
 316     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 317     ac_cv_func_vfork_works=no
 318     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 319     # macros (actually, these are imported from a DLL, but the end effect
 320     # is the same), so the test below won't find them.
 321     libiberty_cv_var_sys_nerr=yes
 322     libiberty_cv_var_sys_errlist=yes
 323     ;;
 324
 325   esac
 326
 327   # We haven't set the list of objects yet.  Use the standard autoconf
 328   # tests.  This will only work if the compiler works.
 329   AC_PROG_CC_WORKS
 330   AC_REPLACE_FUNCS($funcs)
 331   libiberty_AC_FUNC_C_ALLOCA
 332   AC_FUNC_VFORK
 333   if test $ac_cv_func_vfork_works = no; then
 334     LIBOBJS="$LIBOBJS vfork.o"
 335   fi
 336   for v in $vars; do
 337     AC_MSG_CHECKING([for $v])
 338     AC_CACHE_VAL(libiberty_cv_var_$v,
 339       [AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
 340                    [eval "libiberty_cv_var_$v=yes"],
 341                    [eval "libiberty_cv_var_$v=no"])])
 342     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 343       AC_MSG_RESULT(yes)
 344       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 345       AC_DEFINE_UNQUOTED($n)
 346     else
 347       AC_MSG_RESULT(no)
 348     fi
 349   done
 350   AC_CHECK_FUNCS($checkfuncs)
 351 fi
 352
 353 libiberty_AC_FUNC_STRNCMP
 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.
 365 AC_OUTPUT(Makefile testsuite/Makefile,
 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 )