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 # This works around the fact that libtool configuration may change LD
   7 # for this particular configuration, but some shells, instead of
   8 # keeping the changes in LD private, export them just because LD is
   9 # exported.  We don't use libtool yet, but some day we might, so...
  10 ORIGINAL_LD_FOR_MULTILIBS=$LD
  11
  12 dnl We use these options to decide which functions to include.
  13 AC_ARG_WITH(target-subdir,
  14 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
  15 AC_ARG_WITH(build-subdir,
  16 [  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
  17 AC_ARG_WITH(cross-host,
  18 [  --with-cross-host=HOST           Configuring with a cross compiler])
  19 AC_ARG_WITH(newlib,
  20 [  --with-newlib                    Configuring with newlib])
  21
  22 if test "${srcdir}" = "."; then
  23   if test -n "${with_build_subdir}"; then
  24     libiberty_topdir="${srcdir}/../.."
  25     with_target_subdir=
  26   elif test -z "${with_target_subdir}"; then
  27     libiberty_topdir="${srcdir}/.."
  28   else
  29     if test "${with_target_subdir}" != "."; then
  30       libiberty_topdir="${srcdir}/${with_multisrctop}../.."
  31     else
  32       libiberty_topdir="${srcdir}/${with_multisrctop}.."
  33     fi
  34   fi
  35 else
  36   libiberty_topdir="${srcdir}/.."
  37 fi
  38 AC_CONFIG_AUX_DIR($libiberty_topdir)
  39
  40 dnl Very limited version of automake's enable-maintainer-mode
  41
  42 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  43   dnl maintainer-mode is disabled by default
  44   AC_ARG_ENABLE(maintainer-mode,
  45 [  --enable-maintainer-mode
  46                           enable make rules and dependencies not useful
  47                           (and sometimes confusing) to the casual installer],
  48       maintainer_mode=$enableval,
  49       maintainer_mode=no)
  50
  51 AC_MSG_RESULT($maintainer_mode)
  52
  53 if test "$maintainer_mode" = "yes"; then
  54   MAINT=''
  55   NOTMAINT='#'
  56 else
  57   MAINT='#'
  58   NOTMAINT=''
  59 fi
  60 AC_SUBST(MAINT)dnl
  61 AC_SUBST(NOTMAINT)dnl
  62
  63 # Do we have a single-tree copy of texinfo?  Even if we do, we can't
  64 # rely on it - libiberty is built before texinfo.
  65 AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  66 if test "x$MAKEINFO" = "x"; then
  67     MAKEINFO="@echo makeinfo missing; true"
  68     BUILD_INFO=
  69 else
  70     BUILD_INFO=info
  71     case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
  72       x*\ [[1-3]].* )
  73         MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
  74         BUILD_INFO=
  75         AC_MSG_WARN([
  76 *** Makeinfo is too old. Info documentation will not be built.])
  77         ;;
  78     esac
  79 fi
  80 AC_SUBST(MAKEINFO)
  81 AC_SUBST(BUILD_INFO)
  82
  83 AC_CHECK_PROG(PERL, perl, perl, )
  84 if test x"$PERL" = x""; then
  85   HAVE_PERL='#'
  86 else
  87   HAVE_PERL=''
  88 fi
  89 AC_SUBST(HAVE_PERL)
  90
  91 AC_CANONICAL_HOST
  92
  93 dnl When we start using automake:
  94 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
  95
  96 dnl These must be called before AM_PROG_LIBTOOL, because it may want
  97 dnl to call AC_CHECK_PROG.
  98 AC_CHECK_TOOL(AR, ar)
  99 AC_CHECK_TOOL(RANLIB, ranlib, :)
 100
 101 LIB_AC_PROG_CC
 102
 103 AC_ISC_POSIX
 104 AC_C_CONST
 105 AC_C_INLINE
 106
 107 dnl When we start using libtool:
 108 dnl Default to a non shared library.  This may be overridden by the
 109 dnl configure option --enable-shared.
 110 dnl AM_DISABLE_SHARED
 111
 112 dnl When we start using libtool:
 113 dnl AM_PROG_LIBTOOL
 114
 115 dnl When we start using automake:
 116 dnl AM_CONFIG_HEADER(config.h:config.in)
 117 AC_CONFIG_HEADER(config.h:config.in)
 118
 119 dnl When we start using automake:
 120 dnl AM_MAINTAINER_MODE
 121 dnl AC_EXEEXT
 122
 123 dnl When we start using automake:
 124 dnl AM_PROG_INSTALL
 125 AC_PROG_INSTALL
 126
 127 . ${srcdir}/config.table
 128 host_makefile_frag=${frag}
 129 AC_SUBST_FILE(host_makefile_frag)
 130
 131 # It's OK to check for header files.  Although the compiler may not be
 132 # able to link anything, it had better be able to at least compile
 133 # something.
 134 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)
 135 AC_HEADER_SYS_WAIT
 136 AC_HEADER_TIME
 137
 138 libiberty_AC_DECLARE_ERRNO
 139
 140 AC_CHECK_TYPE(uintptr_t, unsigned long)
 141
 142 if test $ac_cv_type_uintptr_t = yes
 143 then
 144   AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 145 fi
 146
 147 AC_TYPE_PID_T
 148
 149 # This is the list of functions which libiberty will provide if they
 150 # are not available on the host.
 151
 152 funcs="asprintf"
 153 funcs="$funcs atexit"
 154 funcs="$funcs basename"
 155 funcs="$funcs bcmp"
 156 funcs="$funcs bcopy"
 157 funcs="$funcs bsearch"
 158 funcs="$funcs bzero"
 159 funcs="$funcs calloc"
 160 funcs="$funcs clock"
 161 funcs="$funcs ffs"
 162 funcs="$funcs getcwd"
 163 funcs="$funcs getpagesize"
 164 funcs="$funcs index"
 165 funcs="$funcs insque"
 166 funcs="$funcs memchr"
 167 funcs="$funcs memcmp"
 168 funcs="$funcs memcpy"
 169 funcs="$funcs memmove"
 170 funcs="$funcs memset"
 171 funcs="$funcs mkstemps"
 172 funcs="$funcs putenv"
 173 funcs="$funcs random"
 174 funcs="$funcs rename"
 175 funcs="$funcs rindex"
 176 funcs="$funcs setenv"
 177 funcs="$funcs sigsetmask"
 178 funcs="$funcs strcasecmp"
 179 funcs="$funcs strchr"
 180 funcs="$funcs strdup"
 181 funcs="$funcs strncasecmp"
 182 funcs="$funcs strrchr"
 183 funcs="$funcs strstr"
 184 funcs="$funcs strtod"
 185 funcs="$funcs strtol"
 186 funcs="$funcs strtoul"
 187 funcs="$funcs tmpnam"
 188 funcs="$funcs vasprintf"
 189 funcs="$funcs vfprintf"
 190 funcs="$funcs vprintf"
 191 funcs="$funcs vsprintf"
 192 funcs="$funcs waitpid"
 193
 194 # Also in the old function.def file: alloca, vfork, getopt.
 195
 196 vars="sys_errlist sys_nerr sys_siglist"
 197
 198 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 199
 200 # These are neither executed nor required, but they help keep
 201 # autoheader happy without adding a bunch of text to acconfig.h.
 202 if test "x" = "y"; then
 203   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock)
 204   AC_CHECK_FUNCS(getcwd getpagesize index insque mkstemps memchr memcmp memcpy)
 205   AC_CHECK_FUNCS(memmove memset putenv random rename rindex sigsetmask)
 206   AC_CHECK_FUNCS(strcasecmp setenv strchr strdup strncasecmp strrchr strstr)
 207   AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
 208   AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
 209   AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
 210   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 211   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 212   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 213 fi
 214
 215 # For each of these functions, if the host does not provide the
 216 # function we want to put FN.o in LIBOBJS, and if the host does
 217 # provide the function, we want to define HAVE_FN in config.h.
 218
 219 setobjs=
 220 CHECK=
 221 target_header_dir=
 222 if test -n "${with_target_subdir}"; then
 223
 224   # We are being configured as a target library.  AC_REPLACE_FUNCS
 225   # may not work correctly, because the compiler may not be able to
 226   # link executables.  Note that we may still be being configured
 227   # native.
 228
 229   # If we are being configured for newlib, we know which functions
 230   # newlib provide and which ones we will be expected to provide.
 231
 232   if test "x${with_newlib}" = "xyes"; then
 233     LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
 234
 235     for f in $funcs; do
 236       case "$f" in
 237         asprintf | basename | insque | random | strdup | vasprintf)
 238           ;;
 239         *)
 240           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 241           AC_DEFINE_UNQUOTED($n)
 242           ;;
 243       esac
 244     done
 245
 246     # newlib doesnt provide any of the variables in $vars, so we
 247     # dont have to check them here.
 248
 249     # Of the functions in $checkfuncs, newlib only has strerror.
 250     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 251
 252     setobjs=yes
 253
 254   fi
 255
 256   # We may wish to install the target headers somewhere.
 257   AC_ARG_ENABLE(install-libiberty,
 258   [  --enable-install-libiberty       Install headers for end users],
 259   enable_install_libiberty=$enableval,
 260   enable_install_libiberty=no)dnl
 261
 262   # Option parsed, now set things appropriately.
 263   case x"$enable_install_libiberty" in
 264     xyes|x)
 265       target_header_dir=libiberty
 266       ;;
 267     xno)
 268       target_header_dir=
 269       ;;
 270     *)
 271       # This could be sanity-checked in various ways...
 272       target_header_dir="${enable_install_libiberty}"
 273       ;;
 274   esac
 275
 276
 277 else
 278
 279    # Not a target library, so we set things up to run the test suite.
 280    CHECK=check-cplus-dem
 281
 282 fi
 283
 284 AC_SUBST(CHECK)
 285 AC_SUBST(target_header_dir)
 286
 287 case "${host}" in
 288   *-*-cygwin* | *-*-mingw*)
 289     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_ERRLIST)
 290     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_NERR)
 291     ;;
 292 esac
 293
 294 if test -z "${setobjs}"; then
 295   case "${host}" in
 296
 297   *-*-vxworks*)
 298     # Handle VxWorks configuration specially, since on VxWorks the
 299     # libraries are actually on the target board, not in the file
 300     # system.
 301     LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
 302     LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
 303     for f in $funcs; do
 304       case "$f" in
 305         basename | getpagesize | insque | random | strcasecmp)
 306           ;;
 307         strncasecmp | strdup | vfork | waitpid | vasprintf)
 308           ;;
 309         *)
 310           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 311           AC_DEFINE_UNQUOTED($n)
 312           ;;
 313       esac
 314     done
 315
 316     # VxWorks doesn't provide any of the variables in $vars, so we
 317     # don't have to check them here.
 318
 319     # Of the functions in $checkfuncs, VxWorks only has strerror.
 320     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 321
 322     setobjs=yes
 323     ;;
 324
 325   esac
 326 fi
 327
 328 if test -z "${setobjs}"; then
 329
 330   case "${host}" in
 331
 332   *-*-cygwin*)
 333     # The Cygwin library actually uses a couple of files from
 334     # libiberty when it is built.  If we are building a native
 335     # Cygwin, and we run the tests, we will appear to have these
 336     # files.  However, when we go on to build winsup, we will wind up
 337     # with a library which does not have the files, since they should
 338     # have come from libiberty.
 339
 340     # We handle this by removing the functions the winsup library
 341     # provides from our shell variables, so that they appear to be
 342     # missing.
 343
 344     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 345
 346     if test -n "${with_target_subdir}"
 347     then
 348       funcs="`echo $funcs | sed -e 's/random//'`"
 349       LIBOBJS="$LIBOBJS random.o"
 350       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 351       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 352     fi
 353     ;;
 354
 355   *-*-mingw32*)
 356     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 357     # macros, so the test below won't find them.
 358     libiberty_cv_var_sys_nerr=yes
 359     libiberty_cv_var_sys_errlist=yes
 360     ;;
 361
 362   *-*-uwin*)
 363     # Under some versions of uwin, vfork is notoriously buggy and the test
 364     # can hang configure; on other versions, vfork exists just as a stub.
 365     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 366     ac_cv_func_vfork_works=no
 367     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 368     # macros (actually, these are imported from a DLL, but the end effect
 369     # is the same), so the test below won't find them.
 370     libiberty_cv_var_sys_nerr=yes
 371     libiberty_cv_var_sys_errlist=yes
 372     ;;
 373
 374   *-*-*vms*)
 375     # Under VMS, vfork works very different than on Unix. The standard test
 376     # won't work, and it isn't easily adaptable. It makes more sense to
 377     # just force it.
 378     ac_cv_func_vfork_works=yes
 379     ;;
 380
 381   esac
 382
 383   # We haven't set the list of objects yet.  Use the standard autoconf
 384   # tests.  This will only work if the compiler works.
 385   AC_PROG_CC_WORKS
 386   AC_REPLACE_FUNCS($funcs)
 387   libiberty_AC_FUNC_C_ALLOCA
 388   AC_FUNC_VFORK
 389   if test $ac_cv_func_vfork_works = no; then
 390     LIBOBJS="$LIBOBJS vfork.o"
 391   fi
 392   # We only need _doprnt if we might use it to implement v*printf.
 393   if test $ac_cv_func_vprintf != yes \
 394      || test $ac_cv_func_vfprintf != yes \
 395      || test $ac_cv_func_vsprintf != yes; then
 396     AC_REPLACE_FUNCS(_doprnt)
 397   else
 398     AC_CHECK_FUNCS(_doprnt)
 399   fi
 400
 401   for v in $vars; do
 402     AC_MSG_CHECKING([for $v])
 403     AC_CACHE_VAL(libiberty_cv_var_$v,
 404       [AC_TRY_LINK([int *p;], [extern int $v []; p = $v;],
 405                    [eval "libiberty_cv_var_$v=yes"],
 406                    [eval "libiberty_cv_var_$v=no"])])
 407     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 408       AC_MSG_RESULT(yes)
 409       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 410       AC_DEFINE_UNQUOTED($n)
 411     else
 412       AC_MSG_RESULT(no)
 413     fi
 414   done
 415   AC_CHECK_FUNCS($checkfuncs)
 416 fi
 417
 418 libiberty_AC_FUNC_STRNCMP
 419
 420 # Install a library built with a cross compiler in $(tooldir) rather
 421 # than $(libdir).
 422 if test -z "${with_cross_host}"; then
 423   INSTALL_DEST=libdir
 424 else
 425   INSTALL_DEST=tooldir
 426 fi
 427 AC_SUBST(INSTALL_DEST)
 428
 429 # We need multilib support, but only if configuring for the target.
 430 AC_OUTPUT(Makefile testsuite/Makefile,
 431 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 432 if test -n "$CONFIG_FILES"; then
 433   if test -n "${with_build_subdir}" || test -n "${with_target_subdir}"; then
 434     # FIXME: We shouldn't need to set ac_file
 435     ac_file=Makefile
 436     LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 437     . ${libiberty_topdir}/config-ml.in
 438   fi
 439 fi],
 440 srcdir=${srcdir}
 441 host=${host}
 442 target=${target}
 443 with_target_subdir=${with_target_subdir}
 444 with_build_subdir=${with_build_subdir}
 445 with_multisubdir=${with_multisubdir}
 446 ac_configure_args="--enable-multilib ${ac_configure_args}"
 447 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 448 libiberty_topdir=${libiberty_topdir}
 449 )