configure.ac

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# Copyright (c) 1999-2001 by Red Hat, Inc. All rights reserved.
# 
# 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: Grzegorz Jakacki <jakacki at acm dot org>

dnl Process this file with autoconf to produce configure.

# Initialization
# ==============

AC_INIT(gc,7.0,[e-mail]) 
    ## version must conform to [0-9]+[.][0-9]+(alpha[0-9]+)?
AC_CONFIG_SRCDIR(gcj_mlc.c)
AC_CANONICAL_TARGET 
AC_PREREQ(2.53)
AC_REVISION($Revision: 1.25 $)
GC_SET_VERSION
AM_INIT_AUTOMAKE([foreign dist-bzip2 subdir-objects nostdinc])
AM_MAINTAINER_MODE

AC_SUBST(PACKAGE)
AC_SUBST(GC_VERSION)

AM_PROG_CC_C_O
AC_PROG_CXX

AM_PROG_AS
## FIXME: really needed? (AC_LIBTOOL already provides this)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)  # :)

AC_PROG_INSTALL

. ${srcdir}/configure.host

GC_CFLAGS=${gc_cflags}
AC_SUBST(GC_CFLAGS)

AC_ARG_ENABLE(threads,
  [AC_HELP_STRING([--enable-threads=TYPE], [choose threading package])],
  THREADS=$enableval,
  [ AC_MSG_CHECKING([for thread model used by GCC])
    THREADS=`$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,
   [AC_HELP_STRING([--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 ]
)

AC_ARG_ENABLE(cplusplus,
    [AC_HELP_STRING([--enable-cplusplus], [install C++ support])])

INCLUDES=-I${srcdir}/include
THREADDLLIBS=
need_atomic_ops_asm=false
## Libraries needed to support dynamic loading and/or threads.
case "$THREADS" in
 no | none | single)
    THREADS=none
    ;;
 posix | pthreads)
    THREADS=posix
    THREADDLLIBS=-lpthread
    case "$host" in
     x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* | alpha-*-linux*)
	AC_DEFINE(GC_LINUX_THREADS)
	AC_DEFINE(_REENTRANT)
        if test "${enable_parallel_mark}" = yes; then
	  AC_DEFINE(PARALLEL_MARK)
	fi
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	AC_MSG_WARN("Explict GC_INIT() calls may be required.");
	;;
     *-*-linux*)
	AC_DEFINE(GC_LINUX_THREADS)
	AC_DEFINE(_REENTRANT)
	;;
     *-*-aix*)
	AC_DEFINE(GC_AIX_THREADS)
	AC_DEFINE(_REENTRANT)
	;;
     *-*-hpux11*)
	AC_MSG_WARN("Only HP/UX 11 POSIX threads are supported.")
	AC_DEFINE(GC_HPUX_THREADS)
	AC_DEFINE(_POSIX_C_SOURCE,199506L)
	if test "${enable_parallel_mark}" = yes; then
	  AC_DEFINE(PARALLEL_MARK)
	fi
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	AC_MSG_WARN("Explict GC_INIT() calls may be required.");
	THREADDLLIBS="-lpthread -lrt"
	# HPUX needs REENTRANT for the _r calls.
	AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
	;;
     *-*-hpux10*)
	AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.")
	;;
     *-*-freebsd*)
	AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
	AC_DEFINE(GC_FREEBSD_THREADS)
	INCLUDES="$INCLUDES -pthread"
      	;;
     *-*-kfreebsd*-gnu)
	AC_DEFINE(GC_FREEBSD_THREADS)
	INCLUDES="$INCLUDES -pthread"
	THREADDLLIBS=-pthread
	AC_DEFINE(_REENTRANT)
        if test "${enable_parallel_mark}" = yes; then
	  AC_DEFINE(PARALLEL_MARK)
	fi
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	AC_DEFINE(USE_COMPILER_TLS)
      	;;
     *-*-gnu*)
	AC_DEFINE(GC_GNU_THREADS)
	AC_DEFINE(_REENTRANT)
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	;;
     *-*-netbsd*)
	AC_MSG_WARN("Only on NetBSD 2.0 or later.")
	AC_DEFINE(GC_NETBSD_THREADS)
	AC_DEFINE(_REENTRANT)
	AC_DEFINE(_PTHREADS)
	THREADDLLIBS="-lpthread -lrt"
	;;
     *-*-solaris*)
	AC_DEFINE(GC_SOLARIS_THREADS)
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	THREADDLLIBS="-lpthread -lrt"
	if test "$GCC" != yes; then
          CFLAGS="$CFLAGS -O"
          need_atomic_ops_asm=true
        fi
	;;
     *-*-irix*)
	AC_DEFINE(GC_IRIX_THREADS)
	;;
     *-*-cygwin*)
	AC_DEFINE(GC_WIN32_THREADS)
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	win32_threads=true
	;;
     *-*-darwin*)
	AC_DEFINE(GC_DARWIN_THREADS)
	AC_DEFINE(THREAD_LOCAL_ALLOC)
	AC_MSG_WARN("Explict GC_INIT() calls may be required.");
	if test "${enable_parallel_mark}" = yes; then
	  AC_DEFINE(PARALLEL_MARK)
	fi
	darwin_threads=true
	;;
     *-*-osf*)
	AC_DEFINE(GC_OSF1_THREADS)
        if test "${enable_parallel_mark}" = yes; then
	  AC_DEFINE(PARALLEL_MARK)
	  AC_DEFINE(THREAD_LOCAL_ALLOC)
	  AC_MSG_WARN("Explict GC_INIT() calls may be required.");
	  # May want to enable it in other cases, too.
	  # Measurements havent yet been done.
	fi
	INCLUDES="$INCLUDES -pthread"
	THREADDLLIBS="-lpthread -lrt"
	;;
      *)
	AC_MSG_ERROR("Pthreads not supported by the GC on this platform.")
	;;
    esac
    ;;
 win32)
    AC_DEFINE(GC_WIN32_THREADS)
    dnl Wine getenv may not return NULL for missing entry
    AC_DEFINE(NO_GETENV)
    ;;
 dgux386)
    THREADS=dgux386
    AC_MSG_RESULT($THREADDLLIBS)
    # Use pthread GCC  switch
    THREADDLLIBS=-pthread
    if test "${enable_parallel_mark}" = yes; then
        AC_DEFINE(PARALLEL_MARK)
    fi
    AC_DEFINE(THREAD_LOCAL_ALLOC)
    AC_MSG_WARN("Explict GC_INIT() calls may be required.");
    AC_DEFINE(GC_DGUX386_THREADS)
    AC_DEFINE(DGUX_THREADS)
    # Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread
    INCLUDES="-pthread $INCLUDES"
    ;;
 aix)
    THREADS=posix
    THREADDLLIBS=-lpthread
    AC_DEFINE(GC_AIX_THREADS)
    AC_DEFINE(_REENTRANT)
    ;;
 decosf1 | irix | mach | os2 | solaris | dce | vxworks)
    AC_MSG_ERROR(thread package $THREADS not yet supported)
    ;;
 *)
    AC_MSG_ERROR($THREADS is an unknown thread package)
    ;;
esac
AC_SUBST(THREADDLLIBS)
AM_CONDITIONAL(THREADS, test x$THREADS != xnone)
AM_CONDITIONAL(PTHREADS, test x$THREADS = xposix)
AM_CONDITIONAL(DARWIN_THREADS, test x$darwin_threads = xtrue)
AM_CONDITIONAL(WIN32_THREADS, test x$win32_threads = xtrue)

case "$host" in 
   powerpc-*-darwin*)
      powerpc_darwin=true
      ;;
esac

# 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 <mach/thread_status.h>])
    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 <mach/thread_status.h>])
    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 <mach/thread_status.h>])
    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 <mach/thread_status.h>])
    ;;
  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 <sys/cdefs.h>
      #include <mach/thread_status.h>])
    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 <sys/cdefs.h>
      #include <mach/thread_status.h>])
    ;;
  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 <sys/cdefs.h>
      #include <mach/thread_status.h>])
    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 <sys/cdefs.h>
      #include <mach/thread_status.h>])
     ;;
  *) ;;
esac

AC_MSG_CHECKING(for xlc)
AC_TRY_COMPILE([],[
 #ifndef __xlC__
 # error
 #endif
], [compiler_xlc=yes], [compiler_xlc=no])
AC_MSG_RESULT($compiler_xlc)
AM_CONDITIONAL(COMPILER_XLC,test $compiler_xlc = yes)
if test $compiler_xlc = yes -a "$powerpc_darwin" = true; then
  # the darwin stack-frame-walking code is completely broken on xlc
  AC_DEFINE(DARWIN_DONT_PARSE_STACK)
fi

# We never want libdl on darwin. It is a fake libdl that just ends up making
# dyld calls anyway
case "$host" in
  *-*-darwin*) ;;
  *)
    AC_CHECK_LIB(dl, dlopen, THREADDLLIBS="$THREADDLLIBS -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=libgc.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=
CXXINCLUDES=
case "$TARGET_ECOS" in
   no)
      ;;