/
configure.ac
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/
configure.ac
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# Copyright (c) 1999-2001 by Red Hat, Inc. All rights reserved.
# Copyright (c) 2005-2009 Hewlett-Packard Development Company, L.P.
# Copyright (c) 2009-2019 Ivan Maidanski
#
# 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.
dnl Process this file with autoconf to produce configure.
dnl Initialization.
AC_INIT(gc,7.6.18,https://github.com/ivmai/bdwgc/issues)
dnl Version must conform to: [0-9]+[.][0-9]+[.][0-9]+
AC_CONFIG_SRCDIR(gcj_mlc.c)
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_TARGET
AC_PREREQ(2.61)
GC_SET_VERSION
AM_INIT_AUTOMAKE([foreign nostdinc subdir-objects])
AC_CONFIG_HEADERS([include/config.h])
AM_MAINTAINER_MODE
AC_SUBST(PACKAGE)
AC_SUBST(GC_VERSION)
AM_PROG_CC_C_O
AC_PROG_CXX
AM_PROG_AS
AC_PROG_INSTALL
LT_INIT
dnl Note: If Autoconf reports that LIBTOOL (or AC_ENABLE_SHARED, or
dnl AC_PROG_LIBTOOL) is undefined, Libtool installation should be checked.
# Special CFLAGS to use when building
gc_cflags=""
# gc_use_mmap Set to "yes" on platforms where mmap should be used instead
# of sbrk. This will define USE_MMAP.
gc_use_mmap=""
# We should set -fexceptions if we are using gcc and might be used
# inside something like gcj. This is the zeroth approximation:
if test :"$GCC": = :yes: ; then
gc_cflags="${gc_cflags} -fexceptions"
else
case "$host" in
hppa*-*-hpux* )
if test :$GCC: != :"yes": ; then
gc_cflags="${gc_cflags} +ESdbgasm"
fi
# :TODO: actually we should check using Autoconf if
# the compiler supports this option.
;;
esac
fi
case "${host}" in
*-linux*)
# FIXME: This seems to be no longer needed as configured in gcconfig.h
#gc_use_mmap=yes
;;
esac
# target_optspace --enable-target-optspace ("yes", "no", "")
case "${target_optspace}:${host}" in
yes:*)
gc_cflags="${gc_cflags} -Os"
;;
:m32r-* | :d10v-* | :d30v-*)
gc_cflags="${gc_cflags} -Os"
;;
no:* | :*)
# Nothing.
;;
esac
# Set any host dependent compiler flags.
case "${host}" in
mips-tx39-*|mipstx39-unknown-*)
gc_cflags="${gc_cflags} -G 0"
;;
*)
;;
esac
GC_CFLAGS=${gc_cflags}
AC_SUBST(GC_CFLAGS)
dnl Extra user-defined flags to pass both to C and C++ compilers.
AC_SUBST([CFLAGS_EXTRA])
AC_ARG_ENABLE(threads,
[AC_HELP_STRING([--enable-threads=TYPE], [choose threading package])],
THREADS=$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
if test "$THREADS" = "posix"; then
case "$host" in
*-*-mingw*)
# Adjust thread model if cross-compiling for MinGW.
THREADS=win32
;;
esac
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)
if test "${enable_parallel_mark}" != no; then
AC_MSG_ERROR([Parallel mark requires --enable-threads=x spec])
fi
;;
esac ]
)
AC_ARG_ENABLE(cplusplus,
[AC_HELP_STRING([--enable-cplusplus], [install C++ support])])
dnl Features which may be selected in the following thread-detection switch.
AH_TEMPLATE([PARALLEL_MARK], [Define to enable parallel marking.])
AH_TEMPLATE([THREAD_LOCAL_ALLOC],
[Define to enable thread-local allocation optimization.])
AH_TEMPLATE([USE_COMPILER_TLS],
[Define to use of compiler-support for thread-local variables.])
dnl Thread selection macros.
AH_TEMPLATE([GC_THREADS], [Define to support platform-specific
threads.])
AH_TEMPLATE([GC_AIX_THREADS], [Define to support IBM AIX threads.])
AH_TEMPLATE([GC_DARWIN_THREADS], [Define to support Darwin pthreads.])
AH_TEMPLATE([GC_FREEBSD_THREADS], [Define to support FreeBSD pthreads.])
AH_TEMPLATE([GC_GNU_THREADS], [Define to support GNU pthreads.])
AH_TEMPLATE([GC_HAIKU_THREADS], [Define to support Haiku pthreads.])
AH_TEMPLATE([GC_HPUX_THREADS], [Define to support HP/UX 11 pthreads.])
AH_TEMPLATE([GC_IRIX_THREADS], [Define to support Irix pthreads.])
AH_TEMPLATE([GC_LINUX_THREADS], [Define to support pthreads on Linux.])
AH_TEMPLATE([GC_NETBSD_THREADS], [Define to support NetBSD pthreads.])
AH_TEMPLATE([GC_OPENBSD_THREADS], [Define to support OpenBSD pthreads.])
AH_TEMPLATE([GC_OSF1_THREADS], [Define to support Tru64 pthreads.])
AH_TEMPLATE([GC_SOLARIS_THREADS], [Define to support Solaris pthreads.])
AH_TEMPLATE([GC_WIN32_THREADS], [Define to support Win32 threads.])
AH_TEMPLATE([GC_WIN32_PTHREADS],
[Define to support pthreads-win32 or winpthreads.])
AH_TEMPLATE([GC_RTEMS_PTHREADS], [Define to support rtems-pthreads.])
dnl System header feature requests.
AH_TEMPLATE([_POSIX_C_SOURCE], [The POSIX feature macro.])
AH_TEMPLATE([_PTHREADS], [Indicates the use of pthreads (NetBSD).])
dnl Win32-specific API usage controls.
AH_TEMPLATE([GC_UNDERSCORE_STDCALL],
[Explicitly prefix exported/imported WINAPI symbols with '_'.])
AH_TEMPLATE([UNICODE],
[Use Unicode (W) variant of Win32 API instead of ASCII (A) one.])
dnl GC API symbols export control.
AH_TEMPLATE([GC_DLL],
[Define to build dynamic libraries with only API symbols exposed.])
dnl Check for a flavor of supported inline keyword.
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $CFLAGS_EXTRA"
AC_C_INLINE
CFLAGS="$old_CFLAGS"
THREADDLLIBS=
need_atomic_ops_asm=false
# Libraries needed to support dynamic loading and/or threads.
case "$THREADS" in
no | none | single)
THREADS=none
;;
posix | pthreads)
THREADS=posix
AC_CHECK_LIB(pthread, pthread_self, THREADDLLIBS="-lpthread",,)
case "$host" in
x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* \
| x86_64-*-linux* | alpha-*-linux* | powerpc*-*-linux* | sparc*-*-linux*)
AC_DEFINE(GC_LINUX_THREADS)
AC_DEFINE(_REENTRANT)
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.")
;;
*-*-*linux* | *-*-nacl*)
AC_DEFINE(GC_LINUX_THREADS)
AC_DEFINE(_REENTRANT)
;;
*-*-aix*)
AC_DEFINE(GC_AIX_THREADS)
AC_DEFINE(_REENTRANT)
;;
*-*-haiku*)
AC_DEFINE(GC_HAIKU_THREADS)
AC_DEFINE(_REENTRANT)
;;
*-*-hpux11*)
AC_MSG_WARN("Only HP/UX 11 POSIX threads are supported.")
AC_DEFINE(GC_HPUX_THREADS)
AC_DEFINE(_POSIX_C_SOURCE,199506L)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit 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.")
;;
*-*-openbsd*)
AC_DEFINE(GC_OPENBSD_THREADS)
THREADDLLIBS=-pthread
AM_CFLAGS="$AM_CFLAGS -pthread"
;;
*-*-dragonfly* | *-*-freebsd*)
AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
AC_DEFINE(GC_FREEBSD_THREADS)
AM_CFLAGS="$AM_CFLAGS -pthread"
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
;;
*-*-kfreebsd*-gnu)
AC_DEFINE(GC_FREEBSD_THREADS)
AM_CFLAGS="$AM_CFLAGS -pthread"
THREADDLLIBS=-pthread
AC_DEFINE(_REENTRANT)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
# FIXME: For a reason, gctest hangs up on kFreeBSD if both of
# THREAD_LOCAL_ALLOC and GC_ENABLE_SUSPEND_THREAD are defined.
if test x"$enable_gcj_support" = xno; then
AC_DEFINE(THREAD_LOCAL_ALLOC)
fi
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)
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
# Need to use alternate thread library, otherwise gctest hangs
# on Solaris 8.
multi_os_directory=`$CC -print-multi-os-directory`
THREADDLLIBS="-L/usr/lib/lwp/$multi_os_directory \
-R/usr/lib/lwp/$multi_os_directory -lpthread -lrt"
;;
*-*-irix*)
AC_DEFINE(GC_IRIX_THREADS)
;;
*-*-cygwin*)
AC_DEFINE(GC_WIN32_THREADS)
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
# Cygwin doesn't have a real libpthread, so Libtool can't link
# against it.
THREADDLLIBS=""
win32_threads=true
;;
*-*-mingw*)
AC_DEFINE(GC_WIN32_PTHREADS)
# Using pthreads-win32 (or other non-Cygwin pthreads) library.
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
THREADDLLIBS="-lpthread"
win32_threads=true
;;
*-*-darwin*)
AC_DEFINE(GC_DARWIN_THREADS)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.")
# Parallel-mark is not well-tested on Darwin
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
darwin_threads=true
;;
*-*-osf*)
AC_DEFINE(GC_OSF1_THREADS)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
# May want to enable it in other cases, too.
# Measurements have not yet been done.
fi
AM_CFLAGS="$AM_CFLAGS -pthread"
THREADDLLIBS="-lpthread -lrt"
;;
*)
AC_MSG_ERROR("Pthreads not supported by the GC on this platform.")
;;
esac
case "$host" in
sparc*-*-solaris*)
if test "$GCC" != yes; then
need_atomic_ops_asm=true
fi
;;
esac
;;
win32)
AC_DEFINE(GC_WIN32_THREADS)
if test "${enable_parallel_mark}" != no; then
AC_DEFINE(PARALLEL_MARK)
AC_DEFINE(THREAD_LOCAL_ALLOC)
else
if test "${enable_shared}" != yes || test "${enable_static}" != no; then
# Imply THREAD_LOCAL_ALLOC unless GC_DLL.
AC_DEFINE(THREAD_LOCAL_ALLOC)
fi
fi
if test "${enable_win32_dllmain}" = yes; then
AC_DEFINE(GC_INSIDE_DLL, 1,
[Enable Win32 DllMain-based approach of threads registering.])
fi
win32_threads=true
AC_DEFINE([EMPTY_GETENV_RESULTS], [1],
[Wine getenv may not return NULL for missing entry.])
;;
dgux386)
THREADS=dgux386
AC_MSG_RESULT($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("Explicit GC_INIT() calls may be required.")
AC_DEFINE([GC_DGUX386_THREADS], 1,
[Define to enable support for DB/UX threads on i386.])
AC_DEFINE([DGUX_THREADS], 1,
[Define to enable support for DB/UX threads.])
# Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread
AM_CFLAGS="-pthread $AM_CFLAGS"
;;
aix)
THREADS=posix
THREADDLLIBS=-lpthread
AC_DEFINE(GC_AIX_THREADS)
AC_DEFINE(_REENTRANT)
;;
rtems)
THREADS=posix
AC_DEFINE(GC_RTEMS_PTHREADS)
AC_DEFINE(THREAD_LOCAL_ALLOC)
;;
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)
compiler_suncc=no
pthread_start_standalone=no
case "$host" in
*-*-*linux*)
# Turn on the workaround described in pthread_start.c.
AS_IF([test "$THREADS" = posix], [pthread_start_standalone=yes])
;;
powerpc-*-darwin*)
powerpc_darwin=true
;;
*-*-solaris*)
if test "$GCC" != yes; then
# Solaris SunCC
compiler_suncc=yes
CFLAGS="-O $CFLAGS"
fi
;;
*-*-wince*)
if test "$enable_gc_debug" != "no"; then
AC_DEFINE([GC_READ_ENV_FILE], 1,
[Read environment variables from the GC 'env' file.])
fi
;;
esac
AM_CONDITIONAL(PTHREAD_START_STANDALONE,
test x$pthread_start_standalone = xyes)
if test "$GCC" = yes; then
# Output all warnings.
AC_MSG_CHECKING([whether compiler supports -Wextra])
old_CFLAGS="$CFLAGS"
CFLAGS="-Wextra $CFLAGS"
AC_TRY_COMPILE([],[], [ac_cv_cc_wextra=yes], [ac_cv_cc_wextra=no])
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT($ac_cv_cc_wextra)
AS_IF([test "$ac_cv_cc_wextra" = yes], [WEXTRA="-Wextra"], [WEXTRA="-W"])
AC_MSG_CHECKING([whether compiler supports -Wpedantic])
CFLAGS="-Wpedantic -Wno-long-long $CFLAGS"
AC_TRY_COMPILE([],[
extern int quiet;
], [ac_cv_cc_pedantic=yes], [ac_cv_cc_pedantic=no])
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT($ac_cv_cc_pedantic)
WPEDANTIC=
AS_IF([test "$ac_cv_cc_pedantic" = yes],
[WPEDANTIC="-Wpedantic -Wno-long-long"])
CFLAGS="-Wall $WEXTRA $WPEDANTIC $CFLAGS"
fi
AC_MSG_CHECKING(for xlc)
AC_TRY_COMPILE([],[
#ifndef __xlC__
# error
#endif
], [compiler_xlc=yes], [compiler_xlc=no])
AC_MSG_RESULT($compiler_xlc)
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], 1, [See doc/README.macros.])
fi
# XLC neither requires nor tolerates the unnecessary assembler goop.
# Similar for the Sun C compiler.
AM_CONDITIONAL([ASM_WITH_CPP_UNSUPPORTED],
[test $compiler_xlc = yes -o $compiler_suncc = yes])
if test "$GCC" = yes; then
# Disable aliasing optimization unless forced to.
AC_MSG_CHECKING([whether compiler supports -fno-strict-aliasing])
ac_cv_fno_strict_aliasing=no
for cflag in $CFLAGS; do
case "$cflag" in
-fstrict-aliasing)
# Opposite option already present
ac_cv_fno_strict_aliasing=skipped
break
;;
esac
done
if test "$ac_cv_fno_strict_aliasing" != skipped; then
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-strict-aliasing"
AC_TRY_COMPILE([],[], [ac_cv_fno_strict_aliasing=yes], [])
CFLAGS="$old_CFLAGS"
AS_IF([test "$ac_cv_fno_strict_aliasing" = yes],
[CFLAGS="$CFLAGS -fno-strict-aliasing"], [])
fi
AC_MSG_RESULT($ac_cv_fno_strict_aliasing)
fi
# Check for getcontext (uClibc can be configured without it, for example)
AC_CHECK_FUNCS([getcontext])
if test "$ac_cv_func_getcontext" = "no"; then
AC_DEFINE([NO_GETCONTEXT], [1], [Missing getcontext function.])
fi
# Check whether dl_iterate_phdr exists (as a strong symbol).
AC_CHECK_FUNCS([dl_iterate_phdr])
if test "$ac_cv_func_dl_iterate_phdr" = "yes"; then
AC_DEFINE([HAVE_DL_ITERATE_PHDR], [1],
[Define if 'dl_iterate_phdr' function is available.])
fi
case "$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. The same applies to Cygwin.
*-*-darwin*) ;;
*-*-cygwin*) ;;
*)
AC_CHECK_LIB(dl, dlopen, THREADDLLIBS="$THREADDLLIBS -ldl")
;;
esac
case "$host" in
*-*-hpux*)
avoid_cpp_lib=yes;;
*)
avoid_cpp_lib=no;
;;
esac
AM_CONDITIONAL(AVOID_CPP_LIB,test $avoid_cpp_lib = yes)
# Check for various headers.
AC_CHECK_HEADERS([execinfo.h])
if test "$ac_cv_header_execinfo_h" != "yes"; then
AC_DEFINE([GC_MISSING_EXECINFO_H], [1], [Missing execinfo.h header.])
fi
# 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=
CXXLIBS=
case "$TARGET_ECOS" in
no)
;;
*)
AC_DEFINE([ECOS], 1, [Define to enable eCos target support.])
AM_CPPFLAGS="-I${TARGET_ECOS}/include $AM_CPPFLAGS"
addobjs="$addobjs ecos.lo"
;;
esac
AM_CONDITIONAL(CPLUSPLUS, test "${enable_cplusplus}" = yes)
if test "$GCC" = yes; then
if test "${enable_cplusplus}" = yes; then
case "$host" in
*-*-cygwin* | *-*-mingw*)
AC_MSG_CHECKING([whether libsupc++ required])
SUPC="`$CXX -print-file-name=libsupc++.a 2>/dev/null`"
if test -n "$SUPC" -a "$SUPC" != "libsupc++.a"; then
AC_MSG_RESULT(yes)
CXXLIBS="-lsupc++"
else
AC_MSG_RESULT(no)
fi
;;
esac
fi
fi
AC_SUBST(CXX)
AC_SUBST(AM_CFLAGS)
AC_SUBST(AM_CPPFLAGS)
AC_SUBST(CXXLIBS)
# Configuration of shared libraries
#
AC_MSG_CHECKING(whether to build shared libraries)
AC_ENABLE_SHARED
case "$host" in
alpha-*-openbsd*)
enable_shared=no
;;
*)
;;
esac
AC_MSG_RESULT($enable_shared)
# Compile with GC_DLL defined unless building static libraries.
if test "${enable_shared}" = yes -a "${enable_static}" = no; then
AC_DEFINE(GC_DLL)
if test "$GCC" = yes; then
# Pass -fvisibility=hidden option if supported
AC_MSG_CHECKING([whether compiler supports -fvisibility])
old_CFLAGS="$CFLAGS"
CFLAGS="-Werror -fvisibility=hidden $CFLAGS"
AC_TRY_COMPILE([],[], [ac_cv_fvisibility_hidden=yes],
[ac_cv_fvisibility_hidden=no])
CFLAGS="$old_CFLAGS"
AS_IF([test "$ac_cv_fvisibility_hidden" = yes],
[CFLAGS="-DGC_VISIBILITY_HIDDEN_SET -fvisibility=hidden $CFLAGS"],
[CFLAGS="-DGC_NO_VISIBILITY $CFLAGS"])
AC_MSG_RESULT($ac_cv_fvisibility_hidden)
fi
else
case "$host" in
*-*-cygwin* | *-*-mingw* | *-*-msys*)
# Use inline version of GC new and delete operators in test_cpp
# otherwise the system ones might be used instead because of arbitrary
# ordering of object files when linking.
CXXFLAGS="$CXXFLAGS -DGC_NOT_DLL"
;;
esac
fi
# Configuration of machine-dependent code
#
AC_MSG_CHECKING(which machine-dependent code should be used)
machdep=
case "$host" in
alpha-*-openbsd*)
if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then
AC_MSG_WARN(
"OpenBSD/Alpha without dlopen(). Shared library support is disabled.")
fi
;;
i?86-*-solaris2.[[89]])
# PROC_VDB appears to work in 2.8 and 2.9 but not in 2.10+ (for now).
AC_DEFINE([SOLARIS25_PROC_VDB_BUG_FIXED], 1,
[See the comment in gcconfig.h.])
;;
mips-*-*)
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="sparc_netbsd_mach_dep.lo"
;;
sparc*-*-linux* | sparc*-*-openbsd* | sparc64-*-freebsd* | sparc64-*-netbsd*)
machdep="sparc_mach_dep.lo"
;;
sparc-sun-solaris2.3)
machdep="sparc_mach_dep.lo"
AC_DEFINE(SUNOS53_SHARED_LIB, 1,
[Define to work around a Solaris 5.3 bug (see dyn_load.c).])
;;
sparc*-sun-solaris2*)
machdep="sparc_mach_dep.lo"
;;
ia64-*-*)
machdep="ia64_save_regs_in_stack.lo"
;;
*-*-nacl*)
AC_DEFINE(NO_EXECUTE_PERMISSION)
;;
esac
AC_MSG_RESULT($machdep)
addobjs="$addobjs $machdep"
AC_SUBST(addobjs)
AC_SUBST(addlibs)
AC_PROG_LIBTOOL
dnl We use these options to decide which functions to include.
AC_ARG_WITH(target-subdir,
[ --with-target-subdir=SUBDIR
configuring with a cross compiler])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST configuring with a cross compiler])
dnl automake wants to see AC_EXEEXT. But we don't need it. And having
dnl it is actually a problem, because the compiler we're passed can't
dnl necessarily do a full link. So we fool automake here.
if false; then
dnl autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
dnl to nothing, so nothing would remain between `then' and `fi' if it
dnl were not for the `:' below.
:
AC_EXEEXT
fi
dnl The collector might not properly work on IBM AIX when
dnl built with gcc and -O. So we remove -O in the appropriate case.
AC_MSG_CHECKING(whether AIX gcc optimization fix is necessary)
case "$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 and NO_EXECUTE_PERMISSION can be overridden
dnl in the startup code.
AC_DEFINE([NO_EXECUTE_PERMISSION], [1],
[Define to make the collector not allocate executable memory
by default.])
AC_DEFINE([ALL_INTERIOR_POINTERS], [1],
[Define to recognise all pointers to the interior of objects.])
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])])
if test x"$enable_gcj_support" != xno; then
AC_DEFINE(GC_GCJ_SUPPORT, 1, [Define to include support for gcj.])
AC_DEFINE([GC_ENABLE_SUSPEND_THREAD], 1,
[Define to turn on GC_suspend_thread support.])
fi
dnl Interaction with other programs that might use signals.
AC_ARG_ENABLE(sigrt-signals,
[AC_HELP_STRING([--enable-sigrt-signals],
[force GC to use SIGRTMIN-based signals for thread suspend/resume])])
if test x"${enable_sigrt_signals}" = xyes; then
AC_DEFINE([GC_USESIGRT_SIGNALS], 1,
[Force the GC to use signals based on SIGRTMIN+k.])
fi
dnl Debugging
dnl ---------
AH_TEMPLATE([GC_HAVE_BUILTIN_BACKTRACE],
[Define if backtrace information is supported.])
AH_TEMPLATE([MAKE_BACK_GRAPH], [See doc/README.macros.])
AH_TEMPLATE([SAVE_CALL_COUNT],
[The number of caller frames saved when allocating with the
debugging API.])
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], 1,
[Define to save back-pointers in debugging headers.])
keep_back_ptrs=true
AC_DEFINE([DBG_HDRS_ALL], 1,
[Define to force debug headers on all objects.])
AH_TEMPLATE([SHORT_DBG_HDRS],
[Shorten the headers to minimize object size at the expense
of checking for writes past the end (see doc/README.macros).])
case $host in
ia64-*-linux* )
AC_DEFINE(MAKE_BACK_GRAPH)
AC_DEFINE(SAVE_CALL_COUNT, 8)
AC_CHECK_LIB(unwind, backtrace, [
AC_DEFINE(GC_HAVE_BUILTIN_BACKTRACE)
UNWINDLIBS=-lunwind
AC_MSG_WARN("Client code may need to link against libunwind.")
])
;;
x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* )
AC_DEFINE(MAKE_BACK_GRAPH)
AC_MSG_WARN("Client must not use -fomit-frame-pointer.")
AC_DEFINE(SAVE_CALL_COUNT, 8)
;;
i[3456]86-*-dgux*)
AC_DEFINE(MAKE_BACK_GRAPH)
;;
esac ]
fi)
AM_CONDITIONAL([MAKE_BACK_GRAPH], [test x"$enable_gc_debug" = xyes])
AM_CONDITIONAL([KEEP_BACK_PTRS], [test x"$keep_back_ptrs" = xtrue])
# Check for dladdr (used for debugging).
AC_MSG_CHECKING(for dladdr)
have_dladdr=no
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $CFLAGS_EXTRA"
AC_TRY_COMPILE([
#define _GNU_SOURCE 1
#include <dlfcn.h>], [{
Dl_info info;
(void)dladdr("", &info);
}], [ have_dladdr=yes ])
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT($have_dladdr)
if test x"$have_dladdr" = xyes; then
AC_DEFINE([HAVE_DLADDR], 1, [Define to use 'dladdr' function.])
fi
# Check for AViiON Machines running DGUX
ac_is_dgux=no
AC_CHECK_HEADER(sys/dg_sys_info.h,
[ac_is_dgux=yes;])
dnl :GOTCHA: we do not check anything but sys/dg_sys_info.h
if test $ac_is_dgux = yes; then
dgux_spec_opts="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
CFLAGS="$dgux_spec_opts $CFLAGS"
CXXFLAGS="$dgux_spec_opts $CXXFLAGS"
if test "$enable_gc_debug" = "yes"; then
CFLAGS="-g -mstandard $CFLAGS"
CXXFLAGS="-g -mstandard $CXXFLAGS"
fi
AC_SUBST(CFLAGS)
AC_SUBST(CXXFLAGS)
fi
AC_ARG_ENABLE(java-finalization,
[AC_HELP_STRING([--disable-java-finalization],
[disable support for java finalization])])
if test x"$enable_java_finalization" != xno; then
AC_DEFINE([JAVA_FINALIZATION], 1, [See doc/README.macros.])
fi
AC_ARG_ENABLE(atomic-uncollectable,
[AC_HELP_STRING([--disable-atomic-uncollectible],
[disable support for atomic uncollectible allocation])])
if test x"$enable_atomic_uncollectible" != x"no"; then
AC_DEFINE([GC_ATOMIC_UNCOLLECTABLE], 1,
[Define to enable atomic uncollectible allocation.])
fi
AC_ARG_ENABLE(redirect-malloc,
[AC_HELP_STRING([--enable-redirect-malloc],
[redirect malloc and friends to GC routines])])
if test "${enable_redirect_malloc}" = yes; then
if test "${enable_gc_debug}" = yes; then
AC_DEFINE([REDIRECT_MALLOC], GC_debug_malloc_replacement,
[If defined, redirect malloc to this function.])
AC_DEFINE([REDIRECT_REALLOC], GC_debug_realloc_replacement,
[If defined, redirect GC_realloc to this function.])
AC_DEFINE([REDIRECT_FREE], GC_debug_free,
[If defined, redirect free to this function.])
else
AC_DEFINE(REDIRECT_MALLOC, GC_malloc)
fi
AC_DEFINE([GC_USE_DLOPEN_WRAP], 1, [See doc/README.macros.])
fi
AC_ARG_ENABLE(disclaim,
[AC_HELP_STRING([--disable-disclaim],
[disable alternative (more efficient) finalization interface])])
if test x"$enable_disclaim" != xno; then
AC_DEFINE(ENABLE_DISCLAIM, 1,
[Define to enable alternative finalization interface.])
fi
AM_CONDITIONAL(ENABLE_DISCLAIM,
[test x"$enable_disclaim" != xno])
AC_ARG_ENABLE(large-config,
[AC_HELP_STRING([--enable-large-config],
[optimize for large (> 100 MB) heap or root set])])
if test "${enable_large_config}" = yes; then
AC_DEFINE(LARGE_CONFIG, 1,
[Define to optimize for large heaps or root sets.])
fi
AC_ARG_ENABLE(handle-fork,
[AC_HELP_STRING([--enable-handle-fork],
[attempt to ensure a usable collector after fork() in multi-threaded
programs])])
if test "${enable_handle_fork}" = yes; then
AC_DEFINE(HANDLE_FORK, 1,
[Define to install pthread_atfork() handlers by default.])
elif test "${enable_handle_fork}" = no; then
AC_DEFINE(NO_HANDLE_FORK, 1,
[Prohibit installation of pthread_atfork() handlers.])
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 targeting an embedded system. FIXME.
if test -n "${with_cross_host}"; then
AC_DEFINE([NO_CLOCK], 1, [Define to not use system clock (cross compiling).])
AC_DEFINE([SMALL_CONFIG], 1,
[Define to tune the collector for small heap sizes.])
fi
if test "$enable_gc_debug" = "no"; then
AC_DEFINE([NO_DEBUGGING], 1,
[Disable debugging, like GC_dump and its callees.])
fi
AC_SUBST(UNWINDLIBS)
AC_ARG_ENABLE(gc-assertions,
[AC_HELP_STRING([--enable-gc-assertions],
[collector-internal assertion checking])])
if test "${enable_gc_assertions}" = yes; then
AC_DEFINE([GC_ASSERTIONS], 1,
[Define to enable internal debug assertions.])
fi
AC_ARG_ENABLE(munmap,
[AC_HELP_STRING([--enable-munmap=N],
[return page to the os if empty for N collections])],
MUNMAP_THRESHOLD=$enableval)
if test x$enable_munmap != x -a x$enable_munmap != xno; then
AC_DEFINE([USE_MMAP], 1,
[Define to use mmap instead of sbrk to expand the heap.])
AH_TEMPLATE([USE_WINALLOC],
[Define to use Win32 VirtualAlloc (instead of sbrk or
mmap) to expand the heap.])
AC_DEFINE([USE_MUNMAP], 1,
[Define to return memory to OS with munmap calls
(see doc/README.macros).])
if test "${MUNMAP_THRESHOLD}" = "yes"; then
MUNMAP_THRESHOLD=6
fi
AC_DEFINE_UNQUOTED([MUNMAP_THRESHOLD], [${MUNMAP_THRESHOLD}],
[Number of GC cycles to wait before unmapping an unused block.])
else
if test "${gc_use_mmap}" = "yes"; then
AC_DEFINE([USE_MMAP], 1,
[Define to use mmap instead of sbrk to expand the heap.])
fi
fi
AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
AC_ARG_ENABLE(werror,
[AS_HELP_STRING([--enable-werror], [pass -Werror to the C compiler])],
werror_flag=$enableval, werror_flag=no)
if test x$werror_flag = xyes; then
WERROR_CFLAGS="-Werror"
case "$host" in
# _dyld_bind_fully_image_containing_address is deprecated in OS X 10.5+
*-*-darwin*)
WERROR_CFLAGS="$WERROR_CFLAGS -Wno-deprecated-declarations"
;;
esac
fi
AC_SUBST([WERROR_CFLAGS])
AC_ARG_ENABLE(single-obj-compilation,
[AC_HELP_STRING([--enable-single-obj-compilation],
[compile all libgc source files into single .o])],
[single_obj_compilation=yes])
AM_CONDITIONAL([SINGLE_GC_OBJ], [test "$single_obj_compilation" = "yes"])
AC_ARG_ENABLE(gcov,
[AC_HELP_STRING([--enable-gcov], [turn on code coverage analysis])])
if test "$enable_gcov" = "yes"; then
CFLAGS="$CFLAGS --coverage"
if test "${enable_shared}" = no; then
# FIXME: As of g++-4.8.4/x86_64, in case of shared library build, test_cpp
# linkage fails with "hidden symbol atexit is referenced by DSO" message.
CXXFLAGS="$CXXFLAGS --coverage"
fi
# Turn off optimization to get accurate line numbers.
CFLAGS=`echo "$CFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'`
CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'`
fi
AC_ARG_ENABLE(docs,
[AC_HELP_STRING([--disable-docs],
[do not build and install documentation])])
AM_CONDITIONAL(ENABLE_DOCS, test x$enable_docs != xno)
# Atomic Ops
# ----------
# Do we want to use an external libatomic_ops? By default use it if it's
# found.
AC_ARG_WITH([libatomic-ops],
[AS_HELP_STRING([--with-libatomic-ops[=yes|no|check]],