libjava/configure.in

   1 dnl Process this with autoconf to create configure
   2 AC_INIT(java/lang/System.java)
   3
   4 # This works around the fact that libtool configuration may change LD
   5 # for this particular configuration, but some shells, instead of
   6 # keeping the changes in LD private, export them just because LD is
   7 # exported.
   8 ORIGINAL_LD_FOR_MULTILIBS=$LD
   9
  10 AC_PROG_LN_S
  11
  12 dnl We use these options to decide which functions to include.
  13 AC_ARG_WITH(target-subdir,
  14 [  --with-target-subdir=SUBDIR
  15                            configuring in a subdirectory])
  16 AC_ARG_WITH(cross-host,
  17 [  --with-cross-host=HOST  configuring with a cross compiler])
  18
  19 AC_ARG_WITH(newlib,
  20 [  --with-newlib           Configuring with newlib])
  21
  22 LIBGCJ_CONFIGURE(.)
  23
  24 AM_CONFIG_HEADER(include/config.h gcj/libgcj-config.h)
  25
  26 # Only use libltdl for native builds.
  27 if test -z "${with_cross_host}"; then
  28    AC_LIBLTDL_CONVENIENCE
  29    AC_LIBTOOL_DLOPEN
  30    DIRLTDL=libltdl
  31    AC_DEFINE(USE_LTDL)
  32    # Sigh.  Libtool's macro doesn't do the right thing.
  33    INCLTDL="-I\$(top_srcdir)/libltdl $INCLTDL"
  34    # FIXME: this is a hack.
  35    sub_auxdir="`cd $ac_aux_dir && ${PWDCMD-pwd}`"
  36    ac_configure_args="$ac_configure_args --with-auxdir=$sub_auxdir"
  37 fi
  38 AC_SUBST(INCLTDL)
  39 AC_SUBST(LIBLTDL)
  40 AC_SUBST(DIRLTDL)
  41 AM_PROG_LIBTOOL
  42 AC_CONFIG_SUBDIRS($DIRLTDL)
  43
  44 if test -z "$with_target_subdir" || test "$with_target_subdir" = "."; then
  45    COMPPATH=.
  46 else
  47    COMPPATH=..
  48 fi
  49 AC_SUBST(COMPPATH)
  50
  51 dnl The -no-testsuite modules omit the test subdir.
  52 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
  53
  54 dnl Should the runtime set system properties by examining the
  55 dnl environment variable GCJ_PROPERTIES?
  56 AC_ARG_ENABLE(getenv-properties,
  57 [  --disable-getenv-properties
  58                           don't set system properties from GCJ_PROPERTIES])
  59
  60 dnl Whether GCJ_PROPERTIES is used depends on the target.
  61 if test -z "$enable_getenv_properties"; then
  62    enable_getenv_properties=${enable_getenv_properties_default-yes}
  63 fi
  64 if test "$enable_getenv_properties" = no; then
  65    AC_DEFINE(DISABLE_GETENV_PROPERTIES)
  66 fi
  67
  68 dnl Whether we should use arguments to main()
  69 if test -z "$enable_main_args"; then
  70    enable_main_args=${enable_main_args_default-yes}
  71 fi
  72 if test "$enable_main_args" = no; then
  73    AC_DEFINE(DISABLE_MAIN_ARGS)
  74 fi
  75
  76
  77 dnl Should we use hashtable-based synchronization?
  78 dnl Currently works only for Linux X86/ia64
  79 dnl Typically faster and more space-efficient
  80 AC_ARG_ENABLE(hash-synchronization,
  81 [  --enable-hash-synchronization
  82                           Use global hash table for monitor locks])
  83
  84 if test -z "$enable_hash_synchronization"; then
  85    enable_hash_synchronization=$enable_hash_synchronization_default
  86 fi
  87
  88 dnl configure.host sets slow_pthread_self if the synchronization code should
  89 dnl try to avoid pthread_self calls by caching thread IDs in a hashtable.
  90 if test "${slow_pthread_self}" = "yes"; then
  91   AC_DEFINE(SLOW_PTHREAD_SELF)
  92 fi
  93
  94
  95 dnl See if the user has requested runtime debugging.
  96 LIBGCJDEBUG="false"
  97 AC_SUBST(LIBGCJDEBUG)
  98 AC_ARG_ENABLE(libgcj-debug,
  99 [  --enable-libgcj-debug   enable runtime debugging code],
 100   if test "$enable_libgcj_debug" = yes; then
 101     AC_DEFINE(DEBUG)
 102     LIBGCJDEBUG="true"
 103   fi)
 104
 105 dnl See if the user has the interpreter included.
 106 AC_ARG_ENABLE(interpreter,
 107 [  --enable-interpreter    enable interpreter],
 108   if test "$enable_interpreter" = yes; then
 109     # This can also be set in configure.host.
 110     libgcj_interpreter=yes
 111   elif test "$enable_interpreter" = no; then
 112     libgcj_interpreter=no
 113   fi)
 114
 115 if test "$libgcj_interpreter" = yes; then
 116    AC_DEFINE(INTERPRETER)
 117 fi
 118 INTERPRETER="$libgcj_interpreter"
 119 AC_SUBST(INTERPRETER)
 120
 121 AC_MSG_CHECKING([for exception model to use])
 122 AC_LANG_SAVE
 123 AC_LANG_CPLUSPLUS
 124 AC_ARG_ENABLE(sjlj-exceptions,
 125 [  --enable-sjlj-exceptions  force use of builtin_setjmp for exceptions],
 126 [:],
 127 [dnl Botheration.  Now we've got to detect the exception model.
 128 dnl Link tests against libgcc.a are problematic since -- at least
 129 dnl as of this writing -- we've not been given proper -L bits for
 130 dnl single-tree newlib and libgloss.
 131 dnl
 132 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
 133 dnl conftest files before we got a change to grep them first.
 134 cat > conftest.$ac_ext << EOF
 135 [#]line __oline__ "configure"
 136 struct S { ~S(); };
 137 void bar();
 138 void foo()
 139 {
 140   S s;
 141   bar();
 142 }
 143 EOF
 144 old_CXXFLAGS="$CXXFLAGS"
 145 CXXFLAGS=-S
 146 if AC_TRY_EVAL(ac_compile); then
 147   if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
 148     enable_sjlj_exceptions=yes
 149   elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
 150     enable_sjlj_exceptions=no
 151   fi
 152 fi
 153 CXXFLAGS="$old_CXXFLAGS"
 154 rm -f conftest*])
 155 if test x$enable_sjlj_exceptions = xyes; then
 156   AC_DEFINE(SJLJ_EXCEPTIONS, 1,
 157         [Define if the compiler is configured for setjmp/longjmp exceptions.])
 158   ac_exception_model_name=sjlj
 159 elif test x$enable_sjlj_exceptions = xno; then
 160   ac_exception_model_name="call frame"
 161 else
 162   AC_MSG_ERROR([unable to detect exception model])
 163 fi
 164 AC_LANG_RESTORE
 165 AC_MSG_RESULT($ac_exception_model_name)
 166
 167 # If we are non using SJLJ exceptions, and this host does not have support
 168 # for unwinding from a signal handler, enable checked dereferences and divides.
 169 if test $can_unwind_signal = no && test $enable_sjlj_exceptions = no; then
 170   CHECKREFSPEC=-fcheck-references
 171   DIVIDESPEC=-fuse-divide-subroutine
 172   EXCEPTIONSPEC=
 173 fi
 174
 175 dnl See if the user wants to disable java.net.  This is the mildly
 176 dnl ugly way that we admit that target-side configuration sucks.
 177 AC_ARG_ENABLE(java-net,
 178 [  --disable-java-net      disable java.net])
 179
 180 dnl Whether java.net is built by default can depend on the target.
 181 if test -z "$enable_java_net"; then
 182    enable_java_net=${enable_java_net_default-yes}
 183 fi
 184 if test "$enable_java_net" = no; then
 185    AC_DEFINE(DISABLE_JAVA_NET)
 186 fi
 187
 188 dnl See if the user wants to configure without libffi.  Some
 189 dnl architectures don't support it, and default values are set in
 190 dnl configure.host.
 191 AC_ARG_WITH(libffi,
 192 [  --without-libffi        don't use libffi],,with_libffi=${with_libffi_default-yes})
 193
 194 LIBFFI=
 195 LIBFFIINCS=
 196 if test "$with_libffi" != no; then
 197    AC_DEFINE(USE_LIBFFI)
 198    LIBFFI=../libffi/libffi_convenience.la
 199    LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
 200 fi
 201 AC_SUBST(LIBFFI)
 202 AC_SUBST(LIBFFIINCS)
 203
 204 dnl See if the user wants to disable JVMPI support.
 205 AC_ARG_ENABLE(jvmpi,
 206 [  --disable-jvmpi         disable JVMPI support])
 207
 208 if test "$enable_jvmpi" != no; then
 209     AC_DEFINE(ENABLE_JVMPI)
 210 fi
 211
 212 dnl If the target is an eCos system, use the appropriate eCos
 213 dnl I/O routines.
 214 dnl FIXME: this should not be a local option but a global target
 215 dnl system; at present there is no eCos target.
 216 TARGET_ECOS=${PROCESS-"no"}
 217 AC_ARG_WITH(ecos,
 218 [  --with-ecos             enable runtime eCos target support],
 219 TARGET_ECOS="$with_ecos"
 220 )
 221
 222 PLATFORMOBJS=
 223 case "$TARGET_ECOS" in
 224    no) case "$host" in
 225       *mingw*)
 226             PLATFORM=Win32
 227             PLATFORMOBJS=win32.lo
 228             PLATFORMH=win32.h
 229         CHECK_FOR_BROKEN_MINGW_LD
 230       ;;
 231       *)
 232             PLATFORM=Posix
 233             PLATFORMOBJS=posix.lo
 234             PLATFORMH=posix.h
 235       ;;
 236       esac
 237       ;;
 238    *)
 239       PLATFORM=Ecos
 240       AC_DEFINE(ECOS)
 241       PLATFORMOBJS=posix.lo
 242       PLATFORMH=posix.h
 243       ;;
 244 esac
 245 AC_SUBST(PLATFORMOBJS)
 246 AC_LINK_FILES(include/$PLATFORMH, include/platform.h)
 247
 248 AC_EGREP_HEADER(uint32_t, stdint.h, AC_DEFINE(HAVE_INT32_DEFINED))
 249 AC_EGREP_HEADER(uint32_t, inttypes.h, AC_DEFINE(HAVE_INT32_DEFINED))
 250 AC_EGREP_HEADER(u_int32_t, sys/types.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED))
 251 AC_EGREP_HEADER(u_int32_t, sys/config.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED))
 252
 253
 254 dnl These may not be defined in a non-ANS conformant embedded system.
 255 dnl FIXME: Should these case a runtime exception in that case?
 256 AC_EGREP_HEADER(mktime, time.h, AC_DEFINE(HAVE_MKTIME))
 257 AC_EGREP_HEADER(localtime, time.h, AC_DEFINE(HAVE_LOCALTIME))
 258
 259 dnl Create the subdirectory for natFileDescriptor.cc, or the attempt
 260 dnl to create the link will fail.
 261 test -d java || mkdir java
 262 test -d java/io || mkdir java/io
 263 test -d gnu || mkdir gnu
 264 AC_LINK_FILES(java/io/natFile${FILE-${PLATFORM}}.cc, java/io/natFile.cc)
 265 AC_LINK_FILES(java/io/natFileDescriptor${FILE-${PLATFORM}}.cc, java/io/natFileDescriptor.cc)
 266
 267 dnl Likewise for ConcreteProcess.java and natConcreteProcess.cc.
 268 test -d java/lang || mkdir java/lang
 269 AC_LINK_FILES(java/lang/${PLATFORM}Process.java, java/lang/ConcreteProcess.java)
 270 AC_LINK_FILES(java/lang/nat${PLATFORM}Process.cc, java/lang/natConcreteProcess.cc)
 271
 272 case "${host}" in
 273     *mingw*)
 274       SYSTEMSPEC="-lgdi32 -lwsock32 -lws2_32"
 275     ;;
 276     *)
 277       SYSTEMSPEC=
 278     ;;
 279 esac
 280 AC_SUBST(SYSTEMSPEC)
 281
 282 LIBGCJTESTSPEC="-L`${PWDCMD-pwd}`/.libs -rpath `${PWDCMD-pwd}`/.libs"
 283 AC_SUBST(LIBGCJTESTSPEC)
 284
 285 AC_ARG_WITH(system-zlib,
 286 [  --with-system-zlib      use installed libz])
 287 ZLIBSPEC=
 288 AC_SUBST(ZLIBSPEC)
 289 ZLIBTESTSPEC=
 290 AC_SUBST(ZLIBTESTSPEC)
 291
 292 dnl FIXME: this should be _libs on some hosts.
 293 libsubdir=.libs
 294
 295 dnl Allow the GC to be disabled.  Can be useful when debugging.
 296 AC_MSG_CHECKING([for garbage collector to use])
 297 AC_ARG_ENABLE(java-gc,
 298 changequote(<<,>>)dnl
 299 <<  --enable-java-gc=TYPE   choose garbage collector [boehm]>>,
 300 changequote([,])
 301   GC=$enableval,
 302   GC=boehm)
 303 GCLIBS=
 304 GCINCS=
 305 GCDEPS=
 306 GCOBJS=
 307 GCSPEC=
 308 JC1GCSPEC=
 309 GCTESTSPEC=
 310 case "$GC" in
 311  boehm)
 312     AC_MSG_RESULT(boehm)
 313     GCLIBS=../boehm-gc/libgcjgc_convenience.la
 314     GCINCS='-I$(top_srcdir)/../boehm-gc/include'
 315     JC1GCSPEC='-fuse-boehm-gc'
 316     GCTESTSPEC="-L`${PWDCMD-pwd}`/../boehm-gc/.libs -rpath `${PWDCMD-pwd}`/../boehm-gc/.libs"
 317
 318     dnl We also want to pick up some cpp flags required when including
 319     dnl boehm-config.h.  Yuck.
 320     GCINCS="$GCINCS `cat ../boehm-gc/boehm-cflags`"
 321     GCOBJS=boehm.lo
 322     GCHDR=boehm-gc.h
 323     dnl The POSIX thread support needs to know this.
 324     AC_DEFINE(HAVE_BOEHM_GC)
 325     ;;
 326  no)
 327     AC_MSG_RESULT(none)
 328     GCOBJS=nogc.lo
 329     GCHDR=no-gc.h
 330     ;;
 331  *)
 332     AC_MSG_ERROR(unrecognized collector \"$GC\")
 333     ;;
 334 esac
 335 AC_SUBST(GCLIBS)
 336 AC_SUBST(GCINCS)
 337 AC_SUBST(GCDEPS)
 338 AC_SUBST(GCOBJS)
 339 AC_SUBST(GCSPEC)
 340 AC_SUBST(JC1GCSPEC)
 341 AC_SUBST(GCTESTSPEC)
 342 AC_LINK_FILES(include/$GCHDR, include/java-gc.h)
 343
 344
 345 AC_MSG_CHECKING([for thread model used by GCC])
 346 THREADS=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
 347 AC_MSG_RESULT([$THREADS])
 348
 349 case "$THREADS" in
 350  no | none | single)
 351     THREADS=none
 352     ;;
 353  posix | pthreads)
 354     THREADS=posix
 355     case "$host" in
 356      *-*-linux*)
 357         AC_DEFINE(LINUX_THREADS)
 358         ;;
 359     esac
 360     ;;
 361  win32)
 362     ;;
 363  decosf1 | irix | mach | os2 | solaris | dce | vxworks)
 364     AC_MSG_ERROR(thread package $THREADS not yet supported)
 365     ;;
 366  *)
 367     AC_MSG_ERROR($THREADS is an unknown thread package)
 368     ;;
 369 esac
 370
 371 THREADLDFLAGS=
 372 THREADLIBS=
 373 THREADINCS=
 374 THREADDEPS=
 375 THREADOBJS=
 376 THREADH=
 377 THREADSPEC=
 378 case "$THREADS" in
 379  posix)
 380     case "$host" in
 381      *-*-cygwin*)
 382         # Don't set THREADLIBS here.  Cygwin doesn't have -lpthread.
 383         ;;
 384 changequote(<<,>>)
 385      *-*-freebsd[1234]*)
 386 changequote([,])
 387         # Before FreeBSD 5, it didn't have -lpthread (or any library which
 388         # merely adds pthread_* functions) but it does have a -pthread switch
 389         # which is required at link-time to select -lc_r *instead* of -lc.
 390         THREADLDFLAGS=-pthread
 391         # Don't set THREADSPEC here as might be expected since -pthread is
 392         # not processed when found within a spec file, it must come from
 393         # the command line.  For now, the user must provide the -pthread
 394         # switch to link code compiled with gcj.  In future, consider adding
 395         # support for weak references to pthread_* functions ala gthr.h API.
 396         THREADSPEC='%{!pthread: %eUnder this configuration, the user must provide -pthread when linking.}'
 397         ;;
 398      *-*-freebsd*)
 399         # FreeBSD 5 implements a model much closer to other modern UNIX
 400         # which support threads.  However, it still does not support
 401         # -lpthread.
 402         THREADLDFLAGS=-pthread
 403         THREADSPEC=-lc_r
 404         ;;
 405      *)
 406         THREADLIBS=-lpthread
 407         THREADSPEC=-lpthread
 408         ;;
 409     esac
 410     THREADOBJS=posix-threads.lo
 411     THREADH=posix-threads.h
 412     # MIT pthreads doesn't seem to have the mutexattr functions.
 413     # But for now we don't check for it.  We just assume you aren't
 414     # using MIT pthreads.
 415     AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT)
 416
 417     # If we're using the Boehm GC, then we happen to know that it
 418     # defines _REENTRANT, so we don't bother.  Eww.
 419     if test "$GC" != boehm; then
 420        AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
 421     fi
 422     AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1, [Required define if using POSIX threads])
 423     ;;
 424
 425  win32)
 426     THREADOBJS=win32-threads.lo
 427     THREADH=win32-threads.h
 428     ;;
 429
 430  none)
 431     THREADOBJS=no-threads.lo
 432     THREADH=no-threads.h
 433     ;;
 434 esac
 435 AC_LINK_FILES(include/$THREADH, include/java-threads.h)
 436 AC_SUBST(THREADLIBS)
 437 AC_SUBST(THREADINCS)
 438 AC_SUBST(THREADDEPS)
 439 AC_SUBST(THREADOBJS)
 440 AC_SUBST(THREADSPEC)
 441 AC_SUBST(THREADLDFLAGS)
 442
 443 if test -d sysdep; then true; else mkdir sysdep; fi
 444 AC_LINK_FILES(sysdep/$sysdeps_dir/locks.h, sysdep/locks.h)
 445
 446 HASH_SYNC_SPEC=
 447 # Hash synchronization is only useful with posix threads right now.
 448 if test "$enable_hash_synchronization" = yes; then
 449    HASH_SYNC_SPEC=-fhash-synchronization
 450    AC_DEFINE(JV_HASH_SYNCHRONIZATION, 1, [Define if hash synchronization is in use])
 451 fi
 452 AC_SUBST(HASH_SYNC_SPEC)
 453
 454
 455 AM_CONDITIONAL(USING_GCC, test "$GCC" = yes)
 456
 457 CANADIAN=no
 458 NULL_TARGET=no
 459 NATIVE=yes
 460
 461 # We're in the tree with gcc, and need to include some of its headers.
 462 GCC_UNWIND_INCLUDE='-I$(libgcj_basedir)/../gcc'
 463
 464 # Figure out where generated headers like libgcj-config.h get installed.
 465 changequote(,)dnl
 466 gcc_version_trigger=${libgcj_basedir}/../gcc/version.c
 467 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 468 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 469 tool_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include
 470 changequote([,])dnl
 471 AC_SUBST(tool_include_dir)
 472 AC_SUBST(gcc_version)
 473
 474 if test "x${with_newlib}" = "xyes"; then
 475    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
 476    # may not work correctly, because the compiler may not be able to
 477    # link executables.
 478
 479    # We assume newlib.  This lets us hard-code the functions we know
 480    # we'll have.
 481    AC_DEFINE(HAVE_MEMMOVE)
 482    AC_DEFINE(HAVE_MEMCPY)
 483    AC_DEFINE(HAVE_STRERROR)
 484    AC_DEFINE(HAVE_TIME)
 485    AC_DEFINE(HAVE_GMTIME_R)
 486    AC_DEFINE(HAVE_LOCALTIME_R)
 487    dnl This is only for POSIX threads.
 488    AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT)
 489    dnl We also assume we are using gcc, which provides alloca.
 490    AC_DEFINE(HAVE_ALLOCA)
 491
 492    dnl Assume we do not have getuid and friends.
 493    AC_DEFINE(NO_GETUID)
 494
 495    # If Canadian cross, then don't pick up tools from the build
 496    # directory.
 497    if test x"$build" != x"$with_cross_host" \
 498         && test x"$build" != x"$target"; then
 499       CANADIAN=yes
 500       GCC_UNWIND_INCLUDE=
 501       GCJ="${target_alias}-gcj"
 502    fi
 503    NATIVE=no
 504 else
 505    AC_CHECK_FUNCS(strerror ioctl select fstat open fsync sleep opendir)
 506    AC_CHECK_FUNCS(gmtime_r localtime_r readdir_r getpwuid_r getcwd)
 507    AC_CHECK_FUNCS(access stat mkdir rename rmdir unlink realpath utime chmod)
 508    AC_CHECK_FUNCS(nl_langinfo setlocale)
 509    AC_CHECK_FUNCS(inet_aton inet_addr, break)
 510    AC_CHECK_FUNCS(inet_pton uname inet_ntoa)
 511    AC_CHECK_FUNCS(fork execvp pipe sigaction ftruncate)
 512    AC_CHECK_HEADERS(execinfo.h unistd.h dlfcn.h)
 513    AC_CHECK_FUNC(backtrace, [
 514      case "$host" in
 515        ia64-*-linux*)
 516          # Has broken backtrace()
 517          ;;
 518        s390*-*-linux*)
 519          # Has broken backtrace()
 520          ;;
 521        *)
 522          AC_DEFINE(HAVE_BACKTRACE)
 523          ;;
 524      esac
 525    ])
 526
 527    AC_CHECK_LIB(dl, dladdr, [
 528      AC_DEFINE(HAVE_DLADDR)])
 529    if test x"$build" = x"$host"; then
 530      AC_CHECK_FILES(/proc/self/exe, [
 531        AC_DEFINE(HAVE_PROC_SELF_EXE)])
 532    else
 533      case $host in
 534      *-linux*)
 535        AC_DEFINE(HAVE_PROC_SELF_EXE)
 536        ;;
 537      esac
 538    fi
 539
 540    AM_ICONV
 541    AM_LC_MESSAGES
 542    AC_STRUCT_TIMEZONE
 543
 544    AC_CHECK_FUNCS(gethostbyname_r, [
 545      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
 546      # There are two different kinds of gethostbyname_r.
 547      # We look for the one that returns `int'.
 548      # Hopefully this check is robust enough.
 549      AC_EGREP_HEADER(int.*gethostbyname_r, netdb.h, [
 550        AC_DEFINE(GETHOSTBYNAME_R_RETURNS_INT)])
 551
 552      case " $GCINCS " in
 553      *" -D_REENTRANT "*) ;;
 554      *)
 555         dnl On DU4.0, gethostbyname_r is only declared with -D_REENTRANT
 556         AC_CACHE_CHECK([whether gethostbyname_r declaration requires -D_REENTRANT],
 557         [libjava_cv_gethostbyname_r_needs_reentrant],
 558         [ AC_LANG_SAVE
 559           AC_LANG_CPLUSPLUS
 560           AC_TRY_COMPILE([#include <netdb.h>],
 561             [gethostbyname_r("", 0, 0);],
 562             [libjava_cv_gethostbyname_r_needs_reentrant=no], [dnl
 563                 CPPFLAGS_SAVE="$CPPFLAGS"
 564                 CPPFLAGS="$CPPFLAGS -D_REENTRANT"
 565                 AC_TRY_COMPILE([#include <netdb.h>], [gethostbyname_r("", 0, 0);],
 566                     [libjava_cv_gethostbyname_r_needs_reentrant=yes],
 567                     [libjava_cv_gethostbyname_r_needs_reentrant=fail])
 568                 CPPFLAGS="$CPPFLAGS_SAVE"
 569           ])
 570           AC_LANG_RESTORE
 571         ])
 572         if test "x$libjava_cv_gethostbyname_r_needs_reentrant" = xyes; then
 573           AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
 574         fi
 575      ;;
 576      esac
 577
 578      AC_CACHE_CHECK([for struct hostent_data],
 579         [libjava_cv_struct_hostent_data], [dnl
 580         AC_TRY_COMPILE([
 581 #if GETHOSTBYNAME_R_NEEDS_REENTRANT && !defined(_REENTRANT)
 582 # define _REENTRANT 1
 583 #endif
 584 #include <netdb.h>], [struct hostent_data data;],
 585           [libjava_cv_struct_hostent_data=yes],
 586           [libjava_cv_struct_hostent_data=no])])
 587      if test "x$libjava_cv_struct_hostent_data" = xyes; then
 588        AC_DEFINE(HAVE_STRUCT_HOSTENT_DATA, 1,
 589          [Define if struct hostent_data is defined in netdb.h])
 590      fi
 591    ])
 592
 593    # FIXME: libjava source code expects to find a prototype for
 594    # gethostbyaddr_r in netdb.h.  The outer check ensures that
 595    # HAVE_GETHOSTBYADDR_R will not be defined if the prototype fails
 596    # to exist where expected.  (The root issue: AC_CHECK_FUNCS assumes C
 597    # linkage check is enough, yet C++ code requires proper prototypes.)
 598    AC_EGREP_HEADER(gethostbyaddr_r, netdb.h, [
 599    AC_CHECK_FUNCS(gethostbyaddr_r, [
 600      AC_DEFINE(HAVE_GETHOSTBYADDR_R)
 601      # There are two different kinds of gethostbyaddr_r.
 602      # We look for the one that returns `int'.
 603      # Hopefully this check is robust enough.
 604      AC_EGREP_HEADER(int.*gethostbyaddr_r, netdb.h, [
 605        AC_DEFINE(GETHOSTBYADDR_R_RETURNS_INT)])])])
 606
 607    AC_CHECK_FUNCS(gethostname, [
 608      AC_DEFINE(HAVE_GETHOSTNAME)
 609      AC_EGREP_HEADER(gethostname, unistd.h, [
 610        AC_DEFINE(HAVE_GETHOSTNAME_DECL)])])
 611
 612    # Look for these functions in the thread library, but only bother
 613    # if using POSIX threads.
 614    if test "$THREADS" = posix; then
 615       save_LIBS="$LIBS"
 616       LIBS="$LIBS $THREADLIBS"
 617       # Some POSIX thread systems don't have pthread_mutexattr_settype.
 618       # E.g., Solaris.
 619       AC_CHECK_FUNCS(pthread_mutexattr_settype pthread_mutexattr_setkind_np)
 620
 621       # Look for sched_yield.  Up to Solaris 2.6, it is in libposix4, since
 622       # Solaris 7 the name librt is preferred.
 623       AC_CHECK_FUNCS(sched_yield, , [
 624         AC_CHECK_LIB(rt, sched_yield, [
 625           AC_DEFINE(HAVE_SCHED_YIELD)
 626           THREADLIBS="$THREADLIBS -lrt"
 627           THREADSPEC="$THREADSPEC -lrt"], [
 628           AC_CHECK_LIB(posix4, sched_yield, [
 629             AC_DEFINE(HAVE_SCHED_YIELD)
 630             THREADLIBS="$THREADLIBS -lposix4"
 631             THREADSPEC="$THREADSPEC -lposix4"])])])
 632       LIBS="$save_LIBS"
 633
 634       # We can save a little space at runtime if the mutex has m_count
 635       # or __m_count.  This is a nice hack for Linux.
 636       AC_TRY_COMPILE([#include <pthread.h>], [
 637           extern pthread_mutex_t *mutex; int q = mutex->m_count;
 638         ], AC_DEFINE(PTHREAD_MUTEX_HAVE_M_COUNT), [
 639         AC_TRY_COMPILE([#include <pthread.h>], [
 640             extern pthread_mutex_t *mutex; int q = mutex->__m_count;
 641           ], AC_DEFINE(PTHREAD_MUTEX_HAVE___M_COUNT))])
 642    fi
 643
 644    # We require a way to get the time.
 645    time_found=no
 646    AC_CHECK_FUNCS(gettimeofday time ftime, time_found=yes)
 647    if test "$time_found" = no; then
 648       AC_MSG_ERROR([no function found to get the time])
 649    fi
 650
 651    AC_CHECK_FUNCS(memmove)
 652
 653    # We require memcpy.
 654    memcpy_found=no
 655    AC_CHECK_FUNCS(memcpy, memcpy_found=yes)
 656    if test "$memcpy_found" = no; then
 657       AC_MSG_ERROR([memcpy is required])
 658    fi
 659
 660    AC_CHECK_LIB(dl, dlopen, [
 661        AC_DEFINE(HAVE_DLOPEN, 1, [Define if dlopen is available])])
 662
 663    # Some library-finding code we stole from Tcl.
 664    #--------------------------------------------------------------------
 665    #    Check for the existence of the -lsocket and -lnsl libraries.
 666    #    The order here is important, so that they end up in the right
 667    #    order in the command line generated by make.  Here are some
 668    #    special considerations:
 669    #    1. Use "connect" and "accept" to check for -lsocket, and
 670    #       "gethostbyname" to check for -lnsl.
 671    #    2. Use each function name only once:  can't redo a check because
 672    #       autoconf caches the results of the last check and won't redo it.
 673    #    3. Use -lnsl and -lsocket only if they supply procedures that
 674    #       aren't already present in the normal libraries.  This is because
 675    #       IRIX 5.2 has libraries, but they aren't needed and they're
 676    #       bogus:  they goof up name resolution if used.
 677    #    4. On some SVR4 systems, can't use -lsocket without -lnsl too.
 678    #       To get around this problem, check for both libraries together
 679    #       if -lsocket doesn't work by itself.
 680    #--------------------------------------------------------------------
 681
 682    AC_CACHE_CHECK([for socket libraries], gcj_cv_lib_sockets,
 683     [gcj_cv_lib_sockets=
 684      gcj_checkBoth=0
 685      unset ac_cv_func_connect
 686      AC_CHECK_FUNC(connect, gcj_checkSocket=0, gcj_checkSocket=1)
 687      if test "$gcj_checkSocket" = 1; then
 688          unset ac_cv_func_connect
 689          AC_CHECK_LIB(socket, main, gcj_cv_lib_sockets="-lsocket",
 690                       gcj_checkBoth=1)
 691      fi
 692      if test "$gcj_checkBoth" = 1; then
 693          gcj_oldLibs=$LIBS
 694          LIBS="$LIBS -lsocket -lnsl"
 695          unset ac_cv_func_accept
 696          AC_CHECK_FUNC(accept,
 697                        [gcj_checkNsl=0
 698                         gcj_cv_lib_sockets="-lsocket -lnsl"])
 699          unset ac_cv_func_accept
 700          LIBS=$gcj_oldLibs
 701      fi
 702      unset ac_cv_func_gethostbyname
 703      gcj_oldLibs=$LIBS
 704      LIBS="$LIBS $gcj_cv_lib_sockets"
 705      AC_CHECK_FUNC(gethostbyname, ,
 706                    [AC_CHECK_LIB(nsl, main,
 707                                  [gcj_cv_lib_sockets="$gcj_cv_lib_sockets -lnsl"])])
 708      unset ac_cv_func_gethostbyname
 709      LIBS=$gcj_oldLIBS
 710    ])
 711    SYSTEMSPEC="$SYSTEMSPEC $gcj_cv_lib_sockets"
 712
 713    if test "$with_system_zlib" = yes; then
 714       AC_CHECK_LIB(z, deflate, ZLIBSPEC=-lz, ZLIBSPEC=)
 715    fi
 716
 717    # On Solaris, and maybe other architectures, the Boehm collector
 718    # requires -ldl.
 719    if test "$GC" = boehm; then
 720       AC_CHECK_LIB(dl, main, SYSTEMSPEC="$SYSTEMSPEC -ldl")
 721    fi
 722
 723    if test -z "${with_multisubdir}"; then
 724       builddotdot=.
 725    else
 726 changequote(<<,>>)
 727       builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`
 728 changequote([,])
 729    fi
 730    if test -x "${builddotdot}/../../gcc/gcj"; then
 731       dir="`cd ${builddotdot}/../../gcc && ${PWDCMD-pwd}`"
 732       GCJ="$dir/gcj -B`${PWDCMD-pwd}`/ -B$dir/"
 733    else
 734       CANADIAN=yes
 735       NULL_TARGET=yes
 736       GCJ="gcj -B`${PWDCMD-pwd}`/"
 737    fi
 738 fi
 739
 740 # Create it, so that compile/link tests don't fail
 741 test -f libgcj.spec || touch libgcj.spec
 742
 743 # We must search the source tree for java.lang, since we still don't
 744 # have libgcj.jar nor java/lang/*.class
 745 GCJ_SAVE_CPPFLAGS=$CPPFLAGS
 746 CPPFLAGS="$CPPFLAGS -I`${PWDCMD-pwd}` -I`cd $srcdir && ${PWDCMD-pwd}`"
 747
 748 # Since some classes depend on this one, we need its source available
 749 # before we can do any GCJ compilation test :-(
 750 if test ! -f gnu/classpath/Configuration.java; then
 751   test -d gnu || mkdir gnu
 752   test -d gnu/classpath || mkdir gnu/classpath
 753   sed 's,@LIBGCJDEBUG@,$LIBGCJDEBUG,' \
 754         < $srcdir/gnu/classpath/Configuration.java.in \
 755         > gnu/classpath/Configuration.java
 756   # We do not want to redirect the output of the grep below to /dev/null,
 757   # but we add /dev/null to the input list so that grep will print the
 758   # filename of Configuration.java in case it finds any matches.
 759   if grep @ gnu/classpath/Configuration.java /dev/null; then
 760     AC_MSG_ERROR([configure.in is missing the substitutions above])
 761   fi
 762 fi
 763
 764 LT_AC_PROG_GCJ
 765
 766 CPPFLAGS=$GCJ_SAVE_CPPFLAGS
 767
 768 AC_COMPILE_CHECK_SIZEOF(void *)
 769
 770 ZLIBS=
 771 SYS_ZLIBS=
 772 ZINCS=
 773
 774 if test -z "$ZLIBSPEC"; then
 775    # Use zlib from the GCC tree.
 776    ZINCS='-I$(top_srcdir)/../zlib'
 777    ZLIBS=../zlib/libzgcj_convenience.la
 778 else
 779    # System's zlib.
 780    SYS_ZLIBS="$ZLIBSPEC"
 781 fi
 782 AC_SUBST(ZLIBS)
 783 AC_SUBST(SYS_ZLIBS)
 784 AC_SUBST(ZINCS)
 785 AC_SUBST(DIVIDESPEC)
 786 AC_SUBST(CHECKREFSPEC)
 787 AC_SUBST(EXCEPTIONSPEC)
 788
 789 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 790 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
 791 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
 792 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 793 AM_CONDITIONAL(NEEDS_DATA_START, test "$NEEDS_DATA_START" = yes && test "$NATIVE" = yes)
 794 AC_SUBST(GCC_UNWIND_INCLUDE)
 795
 796 # Determine gcj version number.
 797 changequote(<<,>>)
 798 gcjversion=`$GCJ -v 2>&1 | sed -n 's/^.*version \([^ ]*\).*$/\1/p'`
 799 changequote([,])
 800 GCJVERSION=$gcjversion
 801 AC_SUBST(GCJVERSION)
 802 AC_DEFINE_UNQUOTED(GCJVERSION, "$GCJVERSION", [Short GCJ version ID])
 803
 804 dnl Work around a g++ bug.  Reported to gcc-bugs@gcc.gnu.org on Jan 22, 2000.
 805 AC_MSG_CHECKING([for g++ -ffloat-store bug])
 806 save_CFLAGS="$CFLAGS"
 807 CFLAGS="-x c++ -O2 -ffloat-store"
 808 AC_TRY_COMPILE([#include <math.h>], ,
 809   [AC_MSG_RESULT(no)],
 810   [AC_DEFINE(__NO_MATH_INLINES)
 811    AC_MSG_RESULT(yes)])
 812 CFLAGS="$save_CFLAGS"
 813
 814 dnl We check for sys/filio.h because Solaris 2.5 defines FIONREAD there.
 815 dnl On that system, sys/ioctl.h will not include sys/filio.h unless
 816 dnl BSD_COMP is defined; just including sys/filio.h is simpler.
 817 AC_CHECK_HEADERS(unistd.h bstring.h sys/time.h sys/types.h fcntl.h sys/ioctl.h sys/filio.h sys/stat.h sys/select.h sys/socket.h netinet/in.h arpa/inet.h netdb.h net/if.h pwd.h sys/config.h stdint.h langinfo.h locale.h)
 818 dnl We avoid AC_HEADER_DIRENT since we really only care about dirent.h
 819 dnl for now.  If you change this, you also must update natFile.cc.
 820 AC_CHECK_HEADERS(dirent.h)
 821 AC_CHECK_HEADERS(inttypes.h, [
 822     AC_DEFINE(HAVE_INTTYPES_H, 1, [Define if <inttypes.h> is available])
 823     AC_DEFINE(JV_HAVE_INTTYPES_H, 1, [Define if <inttypes.h> is available])
 824 ])
 825 AC_HEADER_SYS_WAIT
 826
 827 AC_CHECK_TYPE([ssize_t], [int])
 828
 829 AC_MSG_CHECKING([for in_addr_t])
 830 AC_TRY_COMPILE([#include <sys/types.h>
 831 #if STDC_HEADERS
 832 #include <stdlib.h>
 833 #include <stddef.h>
 834 #endif
 835 #if HAVE_NETINET_IN_H
 836 #include <netinet/in.h>
 837 #endif], [in_addr_t foo;],
 838   [AC_DEFINE([HAVE_IN_ADDR_T])
 839    AC_MSG_RESULT(yes)],
 840   [AC_MSG_RESULT(no)])
 841
 842 AC_MSG_CHECKING([whether struct ip_mreq is in netinet/in.h])
 843 AC_TRY_COMPILE([#include <netinet/in.h>], [struct ip_mreq mreq;],
 844   [AC_DEFINE(HAVE_STRUCT_IP_MREQ)
 845    AC_MSG_RESULT(yes)],
 846   [AC_MSG_RESULT(no)])
 847
 848 AC_MSG_CHECKING([whether struct ipv6_mreq is in netinet/in.h])
 849 AC_TRY_COMPILE([#include <netinet/in.h>], [struct ipv6_mreq mreq6;],
 850   [AC_DEFINE(HAVE_STRUCT_IPV6_MREQ)
 851    AC_MSG_RESULT(yes)],
 852   [AC_MSG_RESULT(no)])
 853
 854 AC_MSG_CHECKING([whether struct sockaddr_in6 is in netinet/in.h])
 855 AC_TRY_COMPILE([#include <netinet/in.h>], [struct sockaddr_in6 addr6;],
 856   [AC_DEFINE(HAVE_INET6)
 857    AC_MSG_RESULT(yes)],
 858   [AC_MSG_RESULT(no)])
 859
 860 AC_MSG_CHECKING([for socklen_t in sys/socket.h])
 861 AC_TRY_COMPILE([#define _POSIX_PII_SOCKET
 862 #include <sys/types.h>
 863 #include <sys/socket.h>], [socklen_t x = 5;],
 864   [AC_DEFINE(HAVE_SOCKLEN_T)
 865    AC_MSG_RESULT(yes)],
 866   [AC_MSG_RESULT(no)])
 867
 868 AC_MSG_CHECKING([for tm_gmtoff in struct tm])
 869 AC_TRY_COMPILE([#include <time.h>], [struct tm tim; tim.tm_gmtoff = 0;],
 870   [AC_DEFINE(STRUCT_TM_HAS_GMTOFF)
 871    AC_MSG_RESULT(yes)],
 872   [AC_MSG_RESULT(no)
 873    AC_MSG_CHECKING([for global timezone variable])
 874    dnl FIXME: we don't want a link check here because that won't work
 875    dnl when cross-compiling.  So instead we make an assumption that
 876    dnl the header file will mention timezone if it exists.
 877    dnl Don't find the win32 function timezone
 878    AC_TRY_COMPILE([#include <time.h>], [void i(){long z2 = 2*timezone;}],
 879      [AC_DEFINE(HAVE_TIMEZONE)
 880       AC_MSG_RESULT(yes)],
 881      [AC_MSG_RESULT(no)
 882        AC_MSG_CHECKING([for global _timezone variable])
 883        dnl FIXME: As above, don't want link check
 884        AC_TRY_COMPILE([#include <time.h>], [long z2 = _timezone;],
 885          [AC_DEFINE(HAVE_UNDERSCORE_TIMEZONE)
 886           AC_MSG_RESULT(yes)],
 887           [AC_MSG_RESULT(no)])])])
 888
 889 AC_FUNC_ALLOCA
 890
 891 AC_CHECK_PROGS(PERL, perl, false)
 892
 893 SYSDEP_SOURCES=
 894
 895 case "${host}" in
 896  i?86-*-linux*)
 897     SIGNAL_HANDLER=include/i386-signal.h
 898     ;;
 899  sparc*-sun-solaris*)
 900     SIGNAL_HANDLER=include/sparc-signal.h
 901     ;;
 902 # ia64-*)
 903 #    SYSDEP_SOURCES=sysdep/ia64.c
 904 #    test -d sysdep || mkdir sysdep
 905 #    ;;
 906  ia64-*-linux*)
 907     SIGNAL_HANDLER=include/dwarf2-signal.h
 908     ;;
 909  powerpc-*-linux*)
 910     SIGNAL_HANDLER=include/dwarf2-signal.h
 911     ;;
 912  alpha*-*-linux*)
 913     SIGNAL_HANDLER=include/dwarf2-signal.h
 914     ;;
 915  s390*-*-linux*)
 916     SIGNAL_HANDLER=include/s390-signal.h
 917     ;;
 918  x86_64*-*-linux*)
 919     SIGNAL_HANDLER=include/dwarf2-signal.h
 920     ;;
 921  sparc*-*-linux*)
 922     SIGNAL_HANDLER=include/dwarf2-signal.h
 923     ;;
 924  *mingw*)
 925     SIGNAL_HANDLER=include/win32-signal.h
 926     ;;
 927  *)
 928     SIGNAL_HANDLER=include/default-signal.h
 929     ;;
 930 esac
 931
 932 # If we're using sjlj exceptions, forget what we just learned.
 933 if test "$enable_sjlj_exceptions" = yes; then
 934    SIGNAL_HANDLER=include/default-signal.h
 935 fi
 936
 937 AC_SUBST(SYSDEP_SOURCES)
 938
 939 AC_LINK_FILES($SIGNAL_HANDLER, include/java-signal.h)
 940
 941 if test "${multilib}" = "yes"; then
 942   multilib_arg="--enable-multilib"
 943 else
 944   multilib_arg=
 945 fi
 946
 947 AC_PATH_XTRA
 948
 949 dnl Determine which AWT peer libraries to build
 950 AC_ARG_ENABLE(java-awt,
 951 [  --enable-java-awt       list of AWT peer implementations to be built])
 952
 953 peerlibs="`echo ${enable_java_awt} | tr ',' ' '`"
 954 use_xlib_awt=""
 955 use_gtk_awt=""
 956
 957 for peer in $peerlibs ; do
 958   case $peer in
 959     xlib)
 960       if [test "$no_x" = yes]; then
 961         echo "*** xlib peers requested but no X library available" 1>&2
 962         exit 1
 963       else
 964         use_xlib_awt="yes"
 965       fi
 966       ;;
 967     gtk)
 968       # Nothing, yet...
 969       ;;
 970     no)
 971       use_xlib_awt=
 972       use_gtk_awt=
 973       break
 974       ;;
 975     *)
 976       echo "*** unrecognised argument \"${peer}\" for --enable-java-awt" 1>&2
 977       exit 1
 978   esac
 979 done
 980
 981 AM_CONDITIONAL(XLIB_AWT, test "$use_xlib_awt" = yes)
 982 AM_CONDITIONAL(GTK_AWT, test "$use_gtk_awt" = yes)
 983
 984
 985 here=`${PWDCMD-pwd}`
 986 AC_SUBST(here)
 987
 988 # We get this from the environment.
 989 AC_SUBST(GCJFLAGS)
 990
 991 AC_OUTPUT(Makefile libgcj.spec libgcj-test.spec gnu/classpath/Configuration.java gcj/Makefile include/Makefile testsuite/Makefile,
 992 [# Only add multilib support code if we just rebuilt top-level Makefile.
 993 case " $CONFIG_FILES " in
 994  *" Makefile "*)
 995    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 996    ac_file=Makefile . ${libgcj_basedir}/../config-ml.in
 997    ;;
 998 esac
 999
1000 # Make subdirectories and `.d' files.  Look in both srcdir and
1001 # builddir for the .java files.
1002 h=`${PWDCMD-pwd}`
1003 : > deps.mk
1004 ( (cd $srcdir && find . \( -name '*.java' -o -name '*.cc' \) -print) ;
1005   find . \( -name '*.java' -o -name '*.cc' \) -print) | \
1006    fgrep -v testsuite | \
1007    sed -e 's/\.java/.d/'\;'s/\.cc/.d/' | \
1008    while read f; do
1009       echo "include $f" >> deps.mk
1010       test -f $f || {
1011 changequote(<<,>>)
1012          d=`echo $f | sed -e 's,/[^/]*$,,'`
1013 changequote([,])
1014          if test ! -d $d; then
1015            $libgcj_basedir/../mkinstalldirs $d
1016          fi;
1017          echo > $f
1018       }
1019    done
1020 ],
1021 srcdir=${srcdir}
1022 host=${host}
1023 target=${target}
1024 with_multisubdir=${with_multisubdir}
1025 ac_configure_args="${multilib_arg} ${ac_configure_args}"
1026 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
1027 libgcj_basedir=${libgcj_basedir}
1028 CC="${CC}"
1029 CXX="${CXX}"
1030 )