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# Copyright (c) 1999, 2000, 2001, 2002, 2003, 2006, 2010, 2011 by Red Hat, Inc.

# All rights reserved.

# Copyright 2004 Nathanael Nerode

#

# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED

# OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.

#

# Permission is hereby granted to use or copy this program

# for any purpose,  provided the above notices are retained on all copies.

# Permission to modify the code and to distribute modified code is granted,

# provided the above notices are retained, and a notice that the code was

# modified is included with the above copyright notice.

#

# Original author: Tom Tromey

# Modified by Nathanael Nerode

dnl Process this file with autoconf to produce configure.

AC_PREREQ(2.64)

AC_INIT

AC_CONFIG_SRCDIR(gcj_mlc.c)

# This works around the fact that libtool configuration may change LD

# for this particular configuration, but some shells, instead of

# keeping the changes in LD private, export them just because LD is

# exported.

ORIGINAL_LD_FOR_MULTILIBS=$LD

AM_ENABLE_MULTILIB(, ..)

AC_CANONICAL_HOST

AC_CANONICAL_TARGET

# Get the 'noncanonical' system names.

ACX_NONCANONICAL_TARGET

# This works around an automake problem.

mkinstalldirs="`cd $ac_aux_dir && ${PWDCMD-pwd}`/mkinstalldirs"

AC_SUBST(mkinstalldirs)

AM_INIT_AUTOMAKE(gc, 6.6, no-define)

# The autoconf 2.5x version of the no-executables hack.

GCC_NO_EXECUTABLES

# Yak.  We must force CC and CXX to /not/ be precious variables; otherwise

# the wrong, non-multilib-adjusted value will be used in multilibs.

# As a side effect, we have to subst CFLAGS and CXXFLAGS ourselves.

m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])

m4_define([_AC_ARG_VAR_PRECIOUS],[])

AC_PROG_CC

AC_PROG_CXX

m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

AM_PROG_CC_C_O

AC_SUBST(CFLAGS)

AC_SUBST(CXXFLAGS)

# Newer automakes demand CCAS and CCASFLAGS.

: ${CCAS='$(CC)'}

: ${CCASFLAGS='$(CFLAGS)'}

AC_SUBST(CCAS)

AC_SUBST(CCASFLAGS)

AC_CHECK_TOOL(AS, as)

AC_CHECK_TOOL(AR, ar)

AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_PROG_INSTALL

AM_MAINTAINER_MODE

. ${srcdir}/configure.host

case ${gc_basedir} in

/* | [A-Za-z]:[/\\]*) gc_flagbasedir=${gc_basedir} ;;

*) gc_flagbasedir='$(top_builddir)/'${gc_basedir} ;;

esac

gc_cflags="${gc_cflags} -Iinclude -I"'$(top_builddir)'"/./targ-include -I${gc_flagbasedir}/libc/include"

case "${host}" in

  *-*-cygwin32*)

    gc_cflags="${gc_cflags} -I${gc_flagbasedir}/../winsup/include"

    ;;

esac

dnl Add for mingw targets GC_BUILD option

case "${host}" in

  *-*-mingw*)

    gc_cflags="${gc_cflags} -DGC_BUILD=1"

    ;;

esac

dnl gc_cflags="${gc_cflags} -fno-builtin"

GC_CFLAGS=${gc_cflags}

AC_SUBST(GC_CFLAGS)

AC_PROG_LIBTOOL

dnl We use these options to decide which functions to include.

AC_ARG_WITH(target-subdir,

[  --with-target-subdir=SUBDIR

                          configuring with a cross compiler])

AC_ARG_WITH(cross-host,

[  --with-cross-host=HOST  configuring with a cross compiler])

AC_MSG_CHECKING([for thread model used by GCC])

THREADS=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`

if test -z "$THREADS"; then

   THREADS=no

fi

AC_MSG_RESULT([$THREADS])

AC_ARG_ENABLE(parallel-mark,

[  --enable-parallel-mark       parallelize marking and free list construction],

   [case "$THREADS" in

      no | none | single)

        AC_MSG_ERROR([Parallel mark requires --enable-threads=x spec])

        ;;

    esac]

)

AM_CPPFLAGS="-I`cd $srcdir && ${PWDCMD-pwd}`/include"

THREADCFLAGS=

THREADLIBS=

case "$THREADS" in

 no | none | single)

    THREADS=none

    ;;

 posix | pthreads)

    THREADS=posix

    THREADLIBS=-lpthread

    case "$host" in

     x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* | alpha-*-linux*)

        AC_DEFINE(GC_LINUX_THREADS,1,[support for Xavier Leroy's Linux threads])

        AC_DEFINE(_REENTRANT,1,[Use reentrant code])

        if test "${enable_parallel_mark}" = yes; then

          AC_DEFINE(PARALLEL_MARK,1,[allow the marker to run in multiple threads])

        fi

        AC_DEFINE(THREAD_LOCAL_ALLOC,1,[define GC_local_malloc() & GC_local_malloc_atomic()])

        ;;

     *-*-linux*)

        AC_DEFINE(GC_LINUX_THREADS,1)

        AC_DEFINE(_REENTRANT,1)

        ;;

     *-*-aix*)

        AC_DEFINE(GC_AIX_THREADS,1,[support AIX threads])

        AC_DEFINE(_REENTRANT,1)

        ;;

     *-*-hpux11*)

        AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.")

        AC_DEFINE(GC_HPUX_THREADS,1,[enables support for HP/UX 11 pthreads])

        AC_DEFINE(_POSIX_C_SOURCE,199506L,[POSIX version of C Source])

        if test "${enable_parallel_mark}" = yes; then

          AC_DEFINE(PARALLEL_MARK,1)

        fi

        AC_DEFINE(THREAD_LOCAL_ALLOC,1)

        THREADLIBS="-lpthread -lrt"

        # HPUX needs REENTRANT for the _r calls.

        AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])

        ;;

     *-*-hpux10*)

        AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.")

        ;;

     *-*-kfreebsd*-gnu)

       AC_DEFINE(GC_FREEBSD_THREADS)

       THREADCFLAGS=-pthread

       THREADLIBS=-pthread

       AC_DEFINE(_REENTRANT)

         if test "${enable_parallel_mark}" = yes; then

         AC_DEFINE(PARALLEL_MARK)

       fi

       AC_DEFINE(THREAD_LOCAL_ALLOC)

       AC_DEFINE(USE_COMPILER_TLS, 1,[use tls for boehm])

       ;;

     *-*-freebsd*)

        AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")

        AC_DEFINE(GC_FREEBSD_THREADS,1,[support FreeBSD threads])

        THREADCFLAGS=-pthread

        THREADLIBS=-pthread

        ;;

     *-*-solaris2.8*)

        AC_DEFINE(GC_SOLARIS_PTHREADS,1,[support for Solaris pthreads])

        # Need to use alternate thread library, otherwise gctest hangs

        # on Solaris 8.

        multi_os_directory=`$CC -print-multi-os-directory`

        THREADLIBS="-L/usr/lib/lwp/$multi_os_directory \

                    -R/usr/lib/lwp/$multi_os_directory -lpthread -lthread -lrt"

        ;;

     *-*-solaris2*)

        AC_DEFINE(GC_SOLARIS_PTHREADS,1,[support for Solaris pthreads])

        # The alternate thread library was only introduced in Solaris 8 and

        # became the default in Solaris 9, so no need for the special code

        # above otherwise.

        # nanosleep, sched_yield, and sem_* only live in librt before

        # Solaris 11.

        THREADLIBS="-lpthread -lrt"

        ;;

     *-*-irix*)

        AC_DEFINE(GC_IRIX_THREADS,1,[support for Irix pthreads])

        ;;

     *-*-cygwin*)

        AC_DEFINE(GC_WIN32_THREADS,1,[support for win32 threads])

        ;;

     *-*-darwin*)

        AC_DEFINE(GC_DARWIN_THREADS,1,[support for Mac OS X pthreads])

        AC_DEFINE(THREAD_LOCAL_ALLOC,1)

        if test "${enable_parallel_mark}" = yes; then

          AC_DEFINE(PARALLEL_MARK,1)

        fi

        ;;

     *-*-osf*)

        AC_DEFINE(GC_OSF1_THREADS,1,[support for Tru64 pthreads])

        if test "${enable_parallel_mark}" = yes; then

          AC_DEFINE(PARALLEL_MARK,1)

          AC_DEFINE(THREAD_LOCAL_ALLOC,1)

          # May want to enable it in other cases, too.

          # Measurements havent yet been done.

        fi

        THREADCFLAGS=-pthread

        THREADLIBS="-lpthread -lrt"

        ;;

    esac

    ;;

 win32)

    AC_DEFINE(GC_WIN32_THREADS,1)

    dnl Old wine getenv may not return NULL for missing entry.

    dnl Define EMPTY_GETENV_RESULTS here to work around the bug.

    ;;

 aix)

    THREADS=posix

    THREADLIBS=-lpthread

    AC_DEFINE(GC_AIX_THREADS,1)

    AC_DEFINE(_REENTRANT,1)

    ;;

 dce | vxworks)

    AC_MSG_ERROR(thread package $THREADS not yet supported)

    ;;

 *)

    AC_MSG_ERROR($THREADS is an unknown thread package)

    ;;

esac

AC_SUBST(THREADCFLAGS)

AC_SUBST(THREADLIBS)

case "$host" in

   powerpc-*-darwin*)

      powerpc_darwin=true

      ;;

esac

AM_CONDITIONAL(POWERPC_DARWIN,test x$powerpc_darwin = xtrue)

# Darwin needs a few extra special tests to deal with variation in the

# system headers.

case "$host" in

  powerpc*-*-darwin*)

    AC_CHECK_MEMBER(ppc_thread_state_t.r0,

      AC_DEFINE(HAS_PPC_THREAD_STATE_R0,1,

        [ppc_thread_state_t has field r0]),,

      [#include ])

    AC_CHECK_MEMBER(ppc_thread_state_t.__r0,

      AC_DEFINE(HAS_PPC_THREAD_STATE___R0,1,dnl

        [ppc_thread_state_t has field __r0]),,

      [#include ])

    AC_CHECK_MEMBER(ppc_thread_state64_t.r0,

      AC_DEFINE(HAS_PPC_THREAD_STATE64_R0,1,dnl

        [ppc_thread_state64_t has field r0]),,

      [#include ])

    AC_CHECK_MEMBER(ppc_thread_state64_t.__r0,

      AC_DEFINE(HAS_PPC_THREAD_STATE64___R0,1,dnl

        [ppc_thread_state64_t has field __r0]),,

      [#include ])

    ;;

  i?86*-*-darwin*)

    AC_CHECK_MEMBER(x86_thread_state32_t.eax,

      AC_DEFINE(HAS_X86_THREAD_STATE32_EAX,1,dnl

        [x86_thread_state32_t has field eax]),,

      [#include 

      #include ])

    AC_CHECK_MEMBER(x86_thread_state32_t.__eax,

      AC_DEFINE(HAS_X86_THREAD_STATE32___EAX,1,dnl

        [x86_thread_state32_t has field __eax]),,

      [#include 

      #include ])

    ;;

  x86_64-*-darwin*)

    AC_CHECK_MEMBER(x86_thread_state64_t.rax,

      AC_DEFINE(HAS_X86_THREAD_STATE64_RAX,1,dnl

        [x86_thread_state64_t has field rax]),,

      [#include 

      #include ])

    AC_CHECK_MEMBER(x86_thread_state64_t.__rax,

      AC_DEFINE(HAS_X86_THREAD_STATE64___RAX,1,dnl

        [x86_thread_state64_t has field __rax]),,

      [#include 

      #include ])

     ;;

  *) ;;

esac

case "$host" in

  # While IRIX 6 has libdl for the O32 and N32 ABIs, it's missing for N64

  # and unnecessary everywhere.

  mips-sgi-irix6*) ;;

  # We never want libdl on darwin. It is a fake libdl that just ends up making

  # dyld calls anyway

  *-*-darwin*) ;;

  *)

    AC_CHECK_LIB(dl, dlopen, EXTRA_TEST_LIBS="$EXTRA_TEST_LIBS -ldl")

    ;;

esac

# extra LD Flags which are required for targets

case "${host}" in

  *-*-darwin*)

    extra_ldflags_libgc=-Wl,-single_module

    ;;

esac

AC_SUBST(extra_ldflags_libgc)

AC_SUBST(EXTRA_TEST_LIBS)

target_all=libgcjgc.la

AC_SUBST(target_all)

dnl If the target is an eCos system, use the appropriate eCos

dnl I/O routines.

dnl FIXME: this should not be a local option but a global target

dnl system; at present there is no eCos target.

TARGET_ECOS="no"

AC_ARG_WITH(ecos,

[  --with-ecos             enable runtime eCos target support],

TARGET_ECOS="$with_ecos"

)

addobjs=

addlibs=

addincludes=

addtests=

case "$TARGET_ECOS" in

   no)

      ;;

   *)

      AC_DEFINE(ECOS,1,[Target is ECOS])

      AM_CPPFLAGS="${AM_CPPFLAGS} -I${TARGET_ECOS}/include"

      addobjs="$addobjs ecos.lo"

      ;;

esac

if test "${enable_cplusplus}" = yes; then

      addincludes="$addincludes include/gc_cpp.h include/gc_allocator.h"

      addtests="$addtests test_cpp"

fi

AM_CONDITIONAL(CPLUSPLUS, test "${enable_cplusplus}" = yes)

AC_SUBST(CXX)

AC_SUBST(AM_CPPFLAGS)

# Configuration of shared libraries

#

AC_MSG_CHECKING(whether to build shared libraries)

AC_ENABLE_SHARED

case "$host" in

 alpha-*-openbsd*)

     enable_shared=no

     AC_MSG_RESULT(no)

     ;;

 *)

     AC_MSG_RESULT(yes)

     ;;

esac

# Checks for pthreads functions

#

oldLIBS="$LIBS"

LIBS="$LIBS $THREADLIBS"

AC_CHECK_FUNCS([pthread_getattr_np])

AC_CHECK_FUNCS([pthread_get_stackaddr_np])

LIBS="$oldLIBS"

# Configuration of machine-dependent code

#

# Set NO_EXECUTE_PERMISSION by default because gcj already uses

# ffi_closure_{alloc,free} which takes care of allocating trampolines

# in executable memory.

#

AC_MSG_CHECKING(which machine-dependent code should be used)

machdep=

case "$host" in

 alpha*-*-openbsd*)

    machdep="alpha_mach_dep.lo"

    if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then

       AC_MSG_WARN(OpenBSD/Alpha without dlopen(). Shared library support is disabled)

    fi

    ;;

 alpha*-*-linux*)

    machdep="alpha_mach_dep.lo"

    ;;

 i?86-*-solaris2.[[89]] | i?86-*-solaris2.1? | x86_64-*-solaris2.1?)

    AC_DEFINE(SOLARIS25_PROC_VDB_BUG_FIXED,1,[PROC_VDB in Solaris 2.5 gives wrong values for dirty bits])

    ;;

 mipstx39-*-elf*)

    machdep="mips_ultrix_mach_dep.lo"

    AC_DEFINE(STACKBASE, __stackbase,[No description])

    AC_DEFINE(DATASTART_IS_ETEXT,1,[No description])

    ;;

 mips-dec-ultrix*)

    machdep="mips_ultrix_mach-dep.lo"

    ;;

 mips-nec-sysv*|mips-unknown-sysv*)

    ;;

 mips*-*-linux*)

    ;;

 mips-*-*)

    machdep="mips_sgi_mach_dep.lo"

    ;;

 sparc-*-netbsd*)

    machdep="sparc_netbsd_mach_dep.lo"

    ;;

 sparc-sun-solaris2.3)

    machdep="sparc_mach_dep.lo"

    AC_DEFINE(SUNOS53_SHARED_LIB,1,[Avoid Solaris 5.3 dynamic library bug])

    ;;

 sparc*-sun-solaris2.*)

    machdep="sparc_mach_dep.lo"

    ;;

 ia64-*-*)

    machdep="mach_dep.lo ia64_save_regs_in_stack.lo"

    ;;

esac

AC_DEFINE(NO_EXECUTE_PERMISSION,1,[cause some or all of the heap to not have execute permission])

if test x"$machdep" = x; then

AC_MSG_RESULT($machdep)

   machdep="mach_dep.lo"

fi

addobjs="$addobjs $machdep"

AC_SUBST(addobjs)

AC_SUBST(addincludes)

AC_SUBST(addlibs)

AC_SUBST(addtests)

dnl As of 4.13a2, the collector will not properly work on Solaris when

dnl built with gcc and -O.  So we remove -O in the appropriate case.

dnl Not needed anymore on Solaris.

AC_MSG_CHECKING([whether GCC optimization should be disabled])

O0_CFLAGS=

case "$host" in

 *aix*) test "$GCC" = yes && O0_CFLAGS=-O0 ;;

 *) ;;

esac

if test x"$O0_CFLAGS" != x; then

   AC_MSG_RESULT(yes)

else

   AC_MSG_RESULT(no)

fi

AC_SUBST([O0_CFLAGS])

dnl Include defines that have become de facto standard.

dnl ALL_INTERIOR_POINTERS can be overridden in startup code.

AC_DEFINE(SILENT,1,[disables statistics printing])

AC_DEFINE(NO_SIGNALS,1,[does not disable signals])

AC_DEFINE(ALL_INTERIOR_POINTERS,1,[allows all pointers to the interior of objects to be recognized])

dnl By default, make the library as general as possible.

AC_DEFINE(JAVA_FINALIZATION,1,[make it somewhat safer to finalize objects out of order])

AC_DEFINE(GC_GCJ_SUPPORT,1,[include support for gcj])

AC_DEFINE(ATOMIC_UNCOLLECTABLE,1,[include code for GC_malloc_atomic_uncollectable])

AC_ARG_ENABLE(gc-debug,

[  --enable-gc-debug    include full support for pointer backtracing etc.],

[ if test "$enable_gc_debug" = "yes"; then

    AC_MSG_WARN("Must define GC_DEBUG and use debug alloc. in clients.")

    AC_DEFINE(KEEP_BACK_PTRS,1,[Add code to save back pointers])

    AC_DEFINE(DBG_HDRS_ALL,1,[Make sure that all objects have debug headers])

    case $host in

      ia64-*-linux* )

        AC_DEFINE(MAKE_BACK_GRAPH,1,[Enable GC_PRINT_BACK_HEIGHT environment variable])

      ;;

      x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* )

        AC_DEFINE(MAKE_BACK_GRAPH,1)

        AC_MSG_WARN("Client must not use -fomit-frame-pointer.")

        AC_DEFINE(SAVE_CALL_COUNT, 8, [number of call frames saved with objects allocated through the debugging interface])

      ;;

    esac

  fi])

if test "${gc_use_mmap}" = "yes"; then

  AC_DEFINE(USE_MMAP, 1, [use MMAP instead of sbrk to get new memory])

fi

if test -n "$with_cross_host" &&

   test x"$with_cross_host" != x"no"; then

  toolexecdir='$(exec_prefix)/$(target_noncanonical)'

  toolexeclibdir='$(toolexecdir)/lib'

else

  toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'

  toolexeclibdir='$(libdir)'

fi

multi_os_directory=`$CC -print-multi-os-directory`

case $multi_os_directory in

  .) ;; # Avoid trailing /.

  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;

esac

AC_SUBST(toolexecdir)

AC_SUBST(toolexeclibdir)

if test "${multilib}" = "yes"; then

  multilib_arg="--enable-multilib"

else

  multilib_arg=

fi

AC_CONFIG_HEADERS([include/gc_config.h include/gc_ext_config.h])

AC_CONFIG_FILES(Makefile include/Makefile testsuite/Makefile threads.mk)

AC_OUTPUT