configure.ac

Boost provides free peer-reviewed portable C++ source libraries. We emphasize libraries that work

   *)
      AC_DEFINE(ECOS)
      CXXINCLUDES="-I${TARGET_ECOS}/include"
      addobjs="$addobjs ecos.lo"
      ;;
esac

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

AC_SUBST(CXX)

AC_SUBST(INCLUDES)
AC_SUBST(CXXINCLUDES)

# 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

# Configuration of machine-dependent code
#
AC_MSG_CHECKING(which machine-dependent code should be used) 
machdep=
case "$host" in
 alpha-*-openbsd*)
    machdep="mach_dep.lo"
    if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then
       AC_MSG_WARN(OpenBSD/Alpha without dlopen(). Shared library support is disabled)
    fi
    ;;
 alpha*-*-linux*)
    machdep="mach_dep.lo"
    ;;
 i?86-*-solaris2.[[89]] | i?86-*-solaris2.1?)
    AC_DEFINE(SOLARIS25_PROC_VDB_BUG_FIXED)
    ;;
 mipstx39-*-elf*)
    machdep="mach_dep.lo"
    AC_DEFINE(STACKBASE, __stackbase)
    AC_DEFINE(DATASTART_IS_ETEXT)
    ;;
 mips-dec-ultrix*)
    machdep="mach-dep.lo"
    ;;
 mips-nec-sysv*|mips-unknown-sysv*)
    ;;
 mips*-*-linux*) 
    ;; 
 mips-*-*)
    machdep="mach_dep.lo"
    dnl AC_DEFINE(NO_EXECUTE_PERMISSION)
    dnl This is now redundant, but it is also important for incremental GC
    dnl performance under Irix.
    ;;
 sparc-*-netbsd*)
    machdep="mach_dep.lo sparc_netbsd_mach_dep.lo"
    ;;
 sparc-sun-solaris2.3)
    machdep="mach_dep.lo sparc_mach_dep.lo"
    AC_DEFINE(SUNOS53_SHARED_LIB)
    ;;
 sparc*-sun-solaris2.*)
    machdep="mach_dep.lo sparc_mach_dep.lo"
    ;;
 ia64-*-*)
    machdep="mach_dep.lo ia64_save_regs_in_stack.lo"
    ;;
esac
if test x"$machdep" = x; then
AC_MSG_RESULT($machdep)
   machdep="mach_dep.lo"
fi
addobjs="$addobjs $machdep"
AC_SUBST(addobjs)
AC_SUBST(addlibs)

AC_PROG_LIBTOOL

#
# Check for AViiON Machines running DGUX
#
ac_is_dgux=no
AC_CHECK_HEADER(sys/dg_sys_info.h,
[ac_is_dgux=yes;])

    ## :GOTCHA: we do not check anything but sys/dg_sys_info.h
if test $ac_is_dgux = yes; then
    if test "$enable_full_debug" = "yes"; then
      CFLAGS="-g -mstandard -DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
      CXXFLAGS="-g -mstandard -DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
    else
      CFLAGS="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
      CXXFLAGS="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
    fi
    AC_SUBST(CFLAGS)
    AC_SUBST(CXXFLAGS)
fi

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])

# automake wants to see AC_EXEEXT.  But we don't need it.  And having
# it is actually a problem, because the compiler we're passed can't
# necessarily do a full link.  So we fool automake here.
if false; then
  # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
  # to nothing, so nothing would remain between `then' and `fi' if it
  # were not for the `:' below.
  :
  AC_EXEEXT
fi

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 Solaris gcc optimization fix is necessary)
case "$host" in
 *aix*)
    if test "$GCC" = yes; then
       AC_MSG_RESULT(yes)
       new_CFLAGS=
       for i in $CFLAGS; do
	  case "$i" in
	   -O*)
	      ;;
	   *)
	      new_CFLAGS="$new_CFLAGS $i"
	      ;;
	  esac
       done
       CFLAGS="$new_CFLAGS"
    else
       AC_MSG_RESULT(no)
    fi
    ;;
 *) AC_MSG_RESULT(no) ;;
esac

dnl Include defines that have become de facto standard.
dnl ALL_INTERIOR_POINTERS can be overridden in startup code.
AC_DEFINE(NO_EXECUTE_PERMISSION)
AC_DEFINE(ALL_INTERIOR_POINTERS)


dnl Interface Selection
dnl -------------------
dnl
dnl By default, make the library as general as possible.
dnl enable_gcj_support=no
AC_ARG_ENABLE(gcj-support,
    [AC_HELP_STRING([--disable-gcj-support],
	[Disable support for gcj.])])
AM_CONDITIONAL(ENABLE_GCJ_SUPPORT,
    [test x"$enable_gcj_support" != xno])
if test x"$enable_gcj_support" != xno; then
    AC_DEFINE(GC_GCJ_SUPPORT, 1, [Define to include support for gcj])
fi

AC_ARG_ENABLE(java-finalization,
    [AC_HELP_STRING([--disable-java-finalization],
	[Disable support for java finalization.])])
if test x"$enable_java_finalization" != xno; then
    AC_DEFINE(JAVA_FINALIZATION)
fi

AC_ARG_ENABLE(atomic-uncollectable,
    [AC_HELP_STRING([--disable-atomic-uncollectible],
	[Disable support for atomic uncollectible allocation.])])
if test x"$enable_atomic_uncollectible" != x"no"; then
    AC_DEFINE(ATOMIC_UNCOLLECTABLE, 1,
	[Define to enable atomic uncollectible allocation.])
fi

AC_ARG_ENABLE(redirect-malloc,
    [AC_HELP_STRING([--enable-redirect-malloc],
	[Redirect malloc and friends to GC routines])])

if test "${enable_redirect_malloc}" = yes; then
    if test "${enable_full_debug}" = yes; then
	AC_DEFINE(REDIRECT_MALLOC, GC_debug_malloc_replacement)
	AC_DEFINE(REDIRECT_REALLOC, GC_debug_realloc_replacement)
	AC_DEFINE(REDIRECT_FREE, GC_debug_free)
    else
	AC_DEFINE(REDIRECT_MALLOC, GC_malloc)
    fi
fi

AC_ARG_ENABLE(large-config,
    [AC_HELP_STRING([--enable-large-config],
	[Optimize for large (> 100 MB) heap or root set])])

if test "${enable_large_config}" = yes; then
    AC_DEFINE(LARGE_CONFIG, 1, [Define to optimize for large heaps or root sets])
fi

dnl This is something of a hack.  When cross-compiling we turn off
dnl some functionality.  We also enable the "small" configuration.
dnl These is only correct when targetting an embedded system.  FIXME.
if test -n "${with_cross_host}"; then
   AC_DEFINE(NO_CLOCK)
   AC_DEFINE(SMALL_CONFIG)
   AC_DEFINE(NO_DEBUGGING)
fi


dnl Debugging
dnl ---------

UNWINDLIBS=
AC_ARG_ENABLE(gc-debug,
[AC_HELP_STRING([--enable-gc-debug],
    [include full support for pointer backtracing etc.])],
[ if test "$enable_gc_debug" = "yes"; then
    AC_MSG_WARN("Should define GC_DEBUG and use debug alloc. in clients.")
    AC_DEFINE(KEEP_BACK_PTRS)
    AC_DEFINE(DBG_HDRS_ALL)
    case $host in
      ia64-*-linux* )
	AC_DEFINE(MAKE_BACK_GRAPH)
	AC_DEFINE(SAVE_CALL_COUNT, 8)
        AC_CHECK_LIB(unwind, backtrace, [
	  AC_DEFINE(GC_HAVE_BUILTIN_BACKTRACE)
	  UNWINDLIBS=-lunwind
	  AC_MSG_WARN("Client code may need to link against libunwind.")
	])
      ;;
      x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* )
	AC_DEFINE(MAKE_BACK_GRAPH)
	AC_MSG_WARN("Client must not use -fomit-frame-pointer.")
	AC_DEFINE(SAVE_CALL_COUNT, 8)
      ;;
      i[3456]86-*-dgux*)
	AC_DEFINE(MAKE_BACK_GRAPH)
      ;;
    esac ]
  fi)

AC_SUBST(UNWINDLIBS)

AC_ARG_ENABLE(gc-assertions,
    [AC_HELP_STRING([--enable-gc-assertions],
	[collector-internal assertion checking])])
if test "${enable_gc_assertions}" = yes; then
    AC_DEFINE(GC_ASSERTIONS)
fi

AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")


dnl Atomic Ops
dnl ----------

atomic_ops_libs=-latomic_ops
AC_CHECK_HEADER(atomic_ops.h,
  [ AC_MSG_NOTICE([Using pre-installed libatomic_ops]) ],
  [ ao_dir=
    for candidate in ${srcdir}/libatomic_ops*; do
	case $candidate in
	    *.tar.gz)
		;;
	    *install)
	    	dnl generated by alternate Makefile.
		;;
	    *)
		if test -e "$candidate"; then
		    ao_dir="$candidate"
		fi
		;;
	esac
    done
    if test -z "$ao_dir"; then
	AC_MSG_ERROR([Missig libatomic_ops.])
    fi
    ao_version="${ao_dir#*libatomic_ops-}"
    AC_MSG_NOTICE([Using internal version of libatomic_ops])

    dnl Automake does not accept shell variables in AC_CONFIG_SUBDIRS
    test -e ${srcdir}/libatomic_ops \
	|| ln -s ${ao_dir} ${srcdir}/libatomic_ops
    AC_CONFIG_SUBDIRS(libatomic_ops)

    dnl Also copy the source files to be linked in.
    test -e ${srcdir}/atomic_ops.c \
    	|| ln -s ${srcdir}/libatomic_ops/src/atomic_ops.c \
		 ${srcdir}/atomic_ops.c

    test -e ${srcdir}/atomic_ops_sysdeps.S \
    	|| ln -s ${srcdir}/libatomic_ops/src/atomic_ops_sysdeps.S \
		 ${srcdir}/atomic_ops_sysdeps.S

    dnl This gets the source include files, which is often close enough.
    dnl It also makes atomic_ops_sysdeps.S assemble.
    GC_CFLAGS="${GC_CFLAGS} -I \$(top_srcdir)/libatomic_ops/src"
    maybe_libatomic_ops="libatomic_ops"
  ])

AM_CONDITIONAL(USE_INTERNAL_LIBATOMIC_OPS,
		test -n "$maybe_libatomic_ops" -a "$THREADS" != "none")
AM_CONDITIONAL(NEED_ATOMIC_OPS_ASM, test -n "$maybe_libatomic_ops" -a x$need_atomic_ops_asm = xtrue)
AC_SUBST(atomic_ops_libs)

dnl Produce the Files
dnl -----------------

AC_CONFIG_FILES([Makefile bdw-gc.pc])

AC_CONFIG_COMMANDS([default],,
  [ srcdir=${srcdir}
    host=${host}
    CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
    CC="${CC}"
    DEFS="$DEFS" ])

AC_OUTPUT