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 "$maintainer_mode" = "yes"; then
  43   MAINT=''
  44   NOTMAINT='#'
  45 else
  46   MAINT='#'
  47   NOTMAINT=''
  48 fi
  49 AC_SUBST(MAINT)dnl
  50 AC_SUBST(NOTMAINT)dnl
  51
  52 # Do we have a single-tree copy of texinfo?  Even if we do, we can't
  53 # rely on it - libiberty is built before texinfo.
  54 AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  55 if test "x$MAKEINFO" = "x"; then
  56     MAKEINFO="@echo makeinfo missing; true"
  57     BUILD_INFO=
  58 else
  59     BUILD_INFO=info
  60     case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
  61       x*\ [[1-3]].* )
  62         MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
  63         BUILD_INFO=
  64         AC_MSG_WARN([
  65 *** Makeinfo is too old. Info documentation will not be built.])
  66         ;;
  67     esac
  68 fi
  69 AC_SUBST(MAKEINFO)
  70 AC_SUBST(BUILD_INFO)
  71
  72 AC_CHECK_PROG(PERL, perl, perl, )
  73 if test x"$PERL" = x""; then
  74   HAVE_PERL='#'
  75 else
  76   HAVE_PERL=''
  77 fi
  78 AC_SUBST(HAVE_PERL)
  79
  80 AC_CANONICAL_HOST
  81
  82 dnl When we start using automake:
  83 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
  84
  85 dnl These must be called before AM_PROG_LIBTOOL, because it may want
  86 dnl to call AC_CHECK_PROG.
  87 AC_CHECK_TOOL(AR, ar)
  88 AC_CHECK_TOOL(RANLIB, ranlib, :)
  89
  90 LIB_AC_PROG_CC
  91
  92 AC_ISC_POSIX
  93 AC_C_CONST
  94 AC_C_INLINE
  95
  96 dnl When we start using libtool:
  97 dnl Default to a non shared library.  This may be overridden by the
  98 dnl configure option --enable-shared.
  99 dnl AM_DISABLE_SHARED
 100
 101 dnl When we start using libtool:
 102 dnl AM_PROG_LIBTOOL
 103
 104 dnl When we start using automake:
 105 dnl AM_CONFIG_HEADER(config.h:config.in)
 106 AC_CONFIG_HEADER(config.h:config.in)
 107
 108 dnl When we start using automake:
 109 dnl AM_MAINTAINER_MODE
 110 dnl AC_EXEEXT
 111
 112 dnl When we start using automake:
 113 dnl AM_PROG_INSTALL
 114 AC_PROG_INSTALL
 115
 116 . ${srcdir}/config.table
 117 host_makefile_frag=${frag}
 118 AC_SUBST_FILE(host_makefile_frag)
 119
 120 # It's OK to check for header files.  Although the compiler may not be
 121 # able to link anything, it had better be able to at least compile
 122 # something.
 123 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 alloca.h)
 124 AC_HEADER_SYS_WAIT
 125 AC_HEADER_TIME
 126
 127 libiberty_AC_DECLARE_ERRNO
 128
 129 AC_CHECK_TYPE(uintptr_t, unsigned long)
 130
 131 if test $ac_cv_type_uintptr_t = yes
 132 then
 133   AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 134 fi
 135
 136 # This is the list of functions which libiberty will provide if they
 137 # are not available on the host.
 138
 139 funcs="asprintf"
 140 funcs="$funcs atexit"
 141 funcs="$funcs basename"
 142 funcs="$funcs bcmp"
 143 funcs="$funcs bcopy"
 144 funcs="$funcs bsearch"
 145 funcs="$funcs bzero"
 146 funcs="$funcs calloc"
 147 funcs="$funcs clock"
 148 funcs="$funcs ffs"
 149 funcs="$funcs getcwd"
 150 funcs="$funcs getpagesize"
 151 funcs="$funcs index"
 152 funcs="$funcs insque"
 153 funcs="$funcs memchr"
 154 funcs="$funcs memcmp"
 155 funcs="$funcs memcpy"
 156 funcs="$funcs memmove"
 157 funcs="$funcs memset"
 158 funcs="$funcs mkstemps"
 159 funcs="$funcs putenv"
 160 funcs="$funcs random"
 161 funcs="$funcs rename"
 162 funcs="$funcs rindex"
 163 funcs="$funcs setenv"
 164 funcs="$funcs sigsetmask"
 165 funcs="$funcs strcasecmp"
 166 funcs="$funcs strchr"
 167 funcs="$funcs strdup"
 168 funcs="$funcs strncasecmp"
 169 funcs="$funcs strrchr"
 170 funcs="$funcs strstr"
 171 funcs="$funcs strtod"
 172 funcs="$funcs strtol"
 173 funcs="$funcs strtoul"
 174 funcs="$funcs tmpnam"
 175 funcs="$funcs vasprintf"
 176 funcs="$funcs vfprintf"
 177 funcs="$funcs vprintf"
 178 funcs="$funcs vsprintf"
 179 funcs="$funcs waitpid"
 180
 181 # Also in the old function.def file: alloca, vfork, getopt.
 182
 183 vars="sys_errlist sys_nerr sys_siglist"
 184
 185 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 186
 187 # These are neither executed nor required, but they help keep
 188 # autoheader happy without adding a bunch of text to acconfig.h.
 189 if test "x" = "y"; then
 190   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock)
 191   AC_CHECK_FUNCS(getcwd getpagesize index insque mkstemps memchr memcmp memcpy)
 192   AC_CHECK_FUNCS(memmove memset putenv random rename rindex sigsetmask)
 193   AC_CHECK_FUNCS(strcasecmp setenv strchr strdup strncasecmp strrchr strstr)
 194   AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
 195   AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
 196   AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
 197   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 198   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 199   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 200 fi
 201
 202 # For each of these functions, if the host does not provide the
 203 # function we want to put FN.o in LIBOBJS, and if the host does
 204 # provide the function, we want to define HAVE_FN in config.h.
 205
 206 setobjs=
 207 CHECK=
 208 target_header_dir=
 209 if test -n "${with_target_subdir}"; then
 210
 211   # We are being configured as a target library.  AC_REPLACE_FUNCS
 212   # may not work correctly, because the compiler may not be able to
 213   # link executables.  Note that we may still be being configured
 214   # native.
 215
 216   # If we are being configured for newlib, we know which functions
 217   # newlib provide and which ones we will be expected to provide.
 218
 219   if test "x${with_newlib}" = "xyes"; then
 220     LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
 221
 222     for f in $funcs; do
 223       case "$f" in
 224         asprintf | basename | insque | random | strdup | vasprintf)
 225           ;;
 226         *)
 227           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 228           AC_DEFINE_UNQUOTED($n)
 229           ;;
 230       esac
 231     done
 232
 233     # newlib doesnt provide any of the variables in $vars, so we
 234     # dont have to check them here.
 235
 236     # Of the functions in $checkfuncs, newlib only has strerror.
 237     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 238
 239     setobjs=yes
 240
 241   fi
 242
 243   # We may wish to install the target headers somewhere.
 244   AC_ARG_ENABLE(install-libiberty,
 245   [  --enable-install-libiberty       Install headers for end users],
 246   enable_install_libiberty=$enableval,
 247   enable_install_libiberty=no)dnl
 248
 249   # Option parsed, now set things appropriately.
 250   case x"$enable_install_libiberty" in
 251     xyes|x)
 252       target_header_dir=libiberty
 253       ;;
 254     xno)
 255       target_header_dir=
 256       ;;
 257     *)
 258       # This could be sanity-checked in various ways...
 259       target_header_dir="${enable_install_libiberty}"
 260       ;;
 261   esac
 262
 263
 264 else
 265
 266    # Not a target library, so we set things up to run the test suite.
 267    CHECK=check-cplus-dem
 268
 269 fi
 270
 271 AC_SUBST(CHECK)
 272 AC_SUBST(target_header_dir)
 273
 274 case "${host}" in
 275   *-*-cygwin* | *-*-mingw*)
 276     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_ERRLIST)
 277     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_NERR)
 278     ;;
 279 esac
 280
 281 if test -z "${setobjs}"; then
 282   case "${host}" in
 283
 284   *-*-vxworks*)
 285     # Handle VxWorks configuration specially, since on VxWorks the
 286     # libraries are actually on the target board, not in the file
 287     # system.
 288     LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
 289     LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
 290     for f in $funcs; do
 291       case "$f" in
 292         basename | getpagesize | insque | random | strcasecmp)
 293           ;;
 294         strncasecmp | strdup | vfork | waitpid | vasprintf)
 295           ;;
 296         *)
 297           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 298           AC_DEFINE_UNQUOTED($n)
 299           ;;
 300       esac
 301     done
 302
 303     # VxWorks doesn't provide any of the variables in $vars, so we
 304     # don't have to check them here.
 305
 306     # Of the functions in $checkfuncs, VxWorks only has strerror.
 307     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 308
 309     setobjs=yes
 310     ;;
 311
 312   esac
 313 fi
 314
 315 if test -z "${setobjs}"; then
 316
 317   case "${host}" in
 318
 319   *-*-cygwin*)
 320     # The Cygwin library actually uses a couple of files from
 321     # libiberty when it is built.  If we are building a native
 322     # Cygwin, and we run the tests, we will appear to have these
 323     # files.  However, when we go on to build winsup, we will wind up
 324     # with a library which does not have the files, since they should
 325     # have come from libiberty.
 326
 327     # We handle this by removing the functions the winsup library
 328     # provides from our shell variables, so that they appear to be
 329     # missing.
 330
 331     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 332
 333     if test -n "${with_target_subdir}"
 334     then
 335       funcs="`echo $funcs | sed -e 's/random//'`"
 336       LIBOBJS="$LIBOBJS random.o"
 337       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 338       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 339     fi
 340     ;;
 341
 342   *-*-mingw32*)
 343     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 344     # macros, so the test below won't find them.
 345     libiberty_cv_var_sys_nerr=yes
 346     libiberty_cv_var_sys_errlist=yes
 347     ;;
 348
 349   *-*-uwin*)
 350     # Under some versions of uwin, vfork is notoriously buggy and the test
 351     # can hang configure; on other versions, vfork exists just as a stub.
 352     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 353     ac_cv_func_vfork_works=no
 354     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 355     # macros (actually, these are imported from a DLL, but the end effect
 356     # is the same), so the test below won't find them.
 357     libiberty_cv_var_sys_nerr=yes
 358     libiberty_cv_var_sys_errlist=yes
 359     ;;
 360
 361   *-*-*vms*)
 362     # Under VMS, vfork works very different than on Unix. The standard test
 363     # won't work, and it isn't easily adaptable. It makes more sense to
 364     # just force it.
 365     ac_cv_func_vfork_works=yes
 366     ;;
 367
 368   esac
 369
 370   # We haven't set the list of objects yet.  Use the standard autoconf
 371   # tests.  This will only work if the compiler works.
 372   AC_PROG_CC_WORKS
 373   AC_REPLACE_FUNCS($funcs)
 374   libiberty_AC_FUNC_C_ALLOCA
 375   AC_FUNC_VFORK
 376   if test $ac_cv_func_vfork_works = no; then
 377     LIBOBJS="$LIBOBJS vfork.o"
 378   fi
 379   # We only need _doprnt if we might use it to implement v*printf.
 380   if test $ac_cv_func_vprintf != yes \
 381      || test $ac_cv_func_vfprintf != yes \
 382      || test $ac_cv_func_vsprintf != yes; then
 383     AC_REPLACE_FUNCS(_doprnt)
 384   else
 385     AC_CHECK_FUNCS(_doprnt)
 386   fi
 387
 388   for v in $vars; do
 389     AC_MSG_CHECKING([for $v])
 390     AC_CACHE_VAL(libiberty_cv_var_$v,
 391       [AC_TRY_LINK([int *p;], [extern int $v []; p = &$v;],
 392                    [eval "libiberty_cv_var_$v=yes"],
 393                    [eval "libiberty_cv_var_$v=no"])])
 394     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 395       AC_MSG_RESULT(yes)
 396       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 397       AC_DEFINE_UNQUOTED($n)
 398     else
 399       AC_MSG_RESULT(no)
 400     fi
 401   done
 402   AC_CHECK_FUNCS($checkfuncs)
 403 fi
 404
 405 libiberty_AC_FUNC_STRNCMP
 406
 407 # Install a library built with a cross compiler in $(tooldir) rather
 408 # than $(libdir).
 409 if test -z "${with_cross_host}"; then
 410   INSTALL_DEST=libdir
 411 else
 412   INSTALL_DEST=tooldir
 413 fi
 414 AC_SUBST(INSTALL_DEST)
 415
 416 # We need multilib support, but only if configuring for the target.
 417 AC_OUTPUT(Makefile testsuite/Makefile,
 418 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 419 if test -n "$CONFIG_FILES"; then
 420   if test -n "${with_target_subdir}"; then
 421     # FIXME: We shouldn't need to set ac_file
 422     ac_file=Makefile
 423     . ${libiberty_topdir}/config-ml.in
 424   fi
 425 fi],
 426 srcdir=${srcdir}
 427 host=${host}
 428 target=${target}
 429 with_target_subdir=${with_target_subdir}
 430 with_multisubdir=${with_multisubdir}
 431 ac_configure_args="--enable-multilib ${ac_configure_args}"
 432 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 433 libiberty_topdir=${libiberty_topdir}
 434 )