1# Copyright (c) 1999, 2000, 2001, 2002, 2003 by Red Hat, Inc. All rights reserved.
2#
3# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
4# OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
5#
6# Permission is hereby granted to use or copy this program
7# for any purpose,  provided the above notices are retained on all copies.
8# Permission to modify the code and to distribute modified code is granted,
9# provided the above notices are retained, and a notice that the code was
10# modified is included with the above copyright notice.
11#
12# Original author: Tom Tromey
13
14dnl Process this file with autoconf to produce configure.
15
16AC_PREREQ(2.13)
17AC_INIT(gcj_mlc.c)
18
19# This works around the fact that libtool configuration may change LD
20# for this particular configuration, but some shells, instead of
21# keeping the changes in LD private, export them just because LD is
22# exported.
23ORIGINAL_LD_FOR_MULTILIBS=$LD
24
25dnl Can't be done in GC_CONFIGURE because that confuses automake.
26AC_CONFIG_AUX_DIR(.)
27
28GC_CONFIGURE(.)
29
30AM_PROG_LIBTOOL
31
32dnl We use these options to decide which functions to include.
33AC_ARG_WITH(target-subdir,
34[  --with-target-subdir=SUBDIR
35                          configuring with a cross compiler])
36AC_ARG_WITH(cross-host,
37[  --with-cross-host=HOST  configuring with a cross compiler])
38
39AM_MAINTAINER_MODE
40# automake wants to see AC_EXEEXT.  But we don't need it.  And having
41# it is actually a problem, because the compiler we're passed can't
42# necessarily do a full link.  So we fool automake here.
43if false; then
44  # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
45  # to nothing, so nothing would remain between `then' and `fi' if it
46  # were not for the `:' below.
47  :
48  AC_EXEEXT
49fi
50
51AC_MSG_CHECKING([for thread model used by GCC])
52THREADS=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
53if test -z "$THREADS"; then
54   THREADS=no
55fi
56AC_MSG_RESULT([$THREADS])
57
58AC_ARG_ENABLE(parallel-mark,
59[  --enable-parallel-mark	parallelize marking and free list construction],
60   [case "$THREADS" in
61      no | none | single)
62	AC_MSG_ERROR([Parallel mark requires --enable-threads=x spec])
63	;;
64    esac]
65)
66
67INCLUDES="-I`cd $srcdir && ${PWDCMD-pwd}`/include"
68THREADLIBS=
69case "$THREADS" in
70 no | none | single)
71    THREADS=none
72    ;;
73 posix | pthreads)
74    THREADS=posix
75    THREADLIBS=-lpthread
76    case "$host" in
77     x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* | alpha-*-linux*)
78	AC_DEFINE(GC_LINUX_THREADS)
79	AC_DEFINE(_REENTRANT)
80        if test "${enable_parallel_mark}" = yes; then
81	  AC_DEFINE(PARALLEL_MARK)
82	fi
83	AC_DEFINE(THREAD_LOCAL_ALLOC)
84	;;
85     *-*-linux*)
86	AC_DEFINE(GC_LINUX_THREADS)
87	AC_DEFINE(_REENTRANT)
88	;;
89     *-*-aix*)
90	AC_DEFINE(GC_AIX_THREADS)
91	AC_DEFINE(_REENTRANT)
92	;;
93     *-*-hpux*)
94	AC_MSG_WARN("Only HP/UX 11 threads are supported.")
95	AC_DEFINE(GC_HPUX_THREADS)
96	AC_DEFINE(_POSIX_C_SOURCE,199506L)
97	if test "${enable_parallel_mark}" = yes; then
98	  AC_DEFINE(PARALLEL_MARK)
99	fi
100	AC_DEFINE(THREAD_LOCAL_ALLOC)
101	THREADLIBS="-lpthread -lrt"
102	;;
103     *-*-freebsd*)
104	AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
105	AC_DEFINE(GC_FREEBSD_THREADS)
106	INCLUDES="$INCLUDES -pthread"
107	THREADLIBS=-pthread
108      	;;
109     *-*-solaris*)
110	AC_DEFINE(GC_SOLARIS_THREADS)
111	AC_DEFINE(GC_SOLARIS_PTHREADS)
112	;;
113     *-*-irix*)
114	AC_DEFINE(GC_IRIX_THREADS)
115	;;
116     *-*-cygwin*)
117	AC_DEFINE(GC_WIN32_THREADS)
118	;;
119     *-*-darwin*)
120	AC_DEFINE(GC_DARWIN_THREADS)
121	AC_DEFINE(THREAD_LOCAL_ALLOC)
122	if test "${enable_parallel_mark}" = yes; then
123	  AC_DEFINE(PARALLEL_MARK)
124	fi
125	;;
126     *-*-osf*)
127	AC_DEFINE(GC_OSF1_THREADS)
128        if test "${enable_parallel_mark}" = yes; then
129	  AC_DEFINE(PARALLEL_MARK)
130	  AC_DEFINE(THREAD_LOCAL_ALLOC)
131	  # May want to enable it in other cases, too.
132	  # Measurements havent yet been done.
133	fi
134	INCLUDES="$INCLUDES -pthread"
135	THREADLIBS="-lpthread -lrt"
136	;;
137    esac
138    ;;
139 win32)
140    AC_DEFINE(GC_WIN32_THREADS)
141    dnl Old wine getenv may not return NULL for missing entry.
142    dnl Define EMPTY_GETENV_RESULTS here to work around the bug.
143    ;;
144 dgux386)
145    THREADS=dgux386
146AC_MSG_RESULT($THREADLIBS)
147    # Use pthread GCC  switch
148    THREADLIBS=-pthread
149    if test "${enable_parallel_mark}" = yes; then
150        AC_DEFINE(PARALLEL_MARK)
151    fi
152    AC_DEFINE(THREAD_LOCAL_ALLOC)
153    AC_DEFINE(GC_DGUX386_THREADS)
154    AC_DEFINE(DGUX_THREADS)
155    # Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread
156    INCLUDES="-pthread $INCLUDES"
157    ;;
158 aix)
159    THREADS=posix
160    THREADLIBS=-lpthread
161    AC_DEFINE(GC_AIX_THREADS)
162    AC_DEFINE(_REENTRANT)
163    ;;
164 decosf1 | irix | mach | os2 | solaris | dce | vxworks)
165    AC_MSG_ERROR(thread package $THREADS not yet supported)
166    ;;
167 *)
168    AC_MSG_ERROR($THREADS is an unknown thread package)
169    ;;
170esac
171AC_SUBST(THREADLIBS)
172
173case "$host" in
174   powerpc-*-darwin*)
175      powerpc_darwin=true
176      ;;
177esac
178AM_CONDITIONAL(POWERPC_DARWIN,test x$powerpc_darwin = xtrue)
179
180# We never want libdl on darwin. It is a fake libdl that just ends up making
181# dyld calls anyway
182case "$host" in
183  *-*-darwin*) ;;
184  *)
185    AC_CHECK_LIB(dl, dlopen, EXTRA_TEST_LIBS="$EXTRA_TEST_LIBS -ldl")
186    ;;
187esac
188
189AC_SUBST(EXTRA_TEST_LIBS)
190
191target_all=libgcjgc.la
192AC_SUBST(target_all)
193AC_SUBST(target_alias)
194
195dnl If the target is an eCos system, use the appropriate eCos
196dnl I/O routines.
197dnl FIXME: this should not be a local option but a global target
198dnl system; at present there is no eCos target.
199TARGET_ECOS="no"
200AC_ARG_WITH(ecos,
201[  --with-ecos             enable runtime eCos target support],
202TARGET_ECOS="$with_ecos"
203)
204
205addobjs=
206addlibs=
207addincludes=
208addtests=
209CXXINCLUDES=
210case "$TARGET_ECOS" in
211   no)
212      ;;
213   *)
214      AC_DEFINE(ECOS)
215      CXXINCLUDES="-I${TARGET_ECOS}/include"
216      addobjs="$addobjs ecos.lo"
217      ;;
218esac
219
220if test "${enable_cplusplus}" = yes; then
221      addincludes="$addincludes include/gc_cpp.h include/gc_allocator.h"
222      addtests="$addtests test_cpp"
223fi
224
225AM_CONDITIONAL(CPLUSPLUS, test "${enable_cplusplus}" = yes)
226
227AC_SUBST(CXX)
228
229AC_SUBST(INCLUDES)
230AC_SUBST(CXXINCLUDES)
231
232# Configuration of shared libraries
233#
234AC_MSG_CHECKING(whether to build shared libraries)
235AC_ENABLE_SHARED
236
237case "$host" in
238 alpha-*-openbsd*)
239     enable_shared=no
240     AC_MSG_RESULT(no)
241     ;;
242 *)
243     AC_MSG_RESULT(yes)
244     ;;
245esac
246
247# Configuration of machine-dependent code
248#
249# We don't set NO_EXECUTE_PERMISSION by default because gcj (and
250# anything else that creates trampolines in gc-allocated memory)
251# always needs exec permission.  The exceptions to this are IA-64 and
252# some variations of Power PC, where trampolines don't contain
253# executable code.
254#
255AC_MSG_CHECKING(which machine-dependent code should be used)
256machdep=
257case "$host" in
258 alpha*-*-openbsd*)
259    machdep="alpha_mach_dep.lo"
260    if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then
261       AC_MSG_WARN(OpenBSD/Alpha without dlopen(). Shared library support is disabled)
262    fi
263    ;;
264 alpha*-*-linux*)
265    machdep="alpha_mach_dep.lo"
266    ;;
267 i?86-*-solaris2.[[89]] | i?86-*-solaris2.1?)
268    AC_DEFINE(SOLARIS25_PROC_VDB_BUG_FIXED)
269    ;;
270 mipstx39-*-elf*)
271    machdep="mips_ultrix_mach_dep.lo"
272    AC_DEFINE(STACKBASE, __stackbase)
273    AC_DEFINE(DATASTART_IS_ETEXT)
274    ;;
275 mips-dec-ultrix*)
276    machdep="mips_ultrix_mach-dep.lo"
277    ;;
278 mips-nec-sysv*|mips-unknown-sysv*)
279    ;;
280 mips*-*-linux*)
281    ;;
282 mips-*-*)
283    machdep="mips_sgi_mach_dep.lo"
284    ;;
285 sparc-*-netbsd*)
286    machdep="sparc_netbsd_mach_dep.lo"
287    ;;
288 sparc-sun-solaris2.3)
289    machdep="sparc_mach_dep.lo"
290    AC_DEFINE(SUNOS53_SHARED_LIB)
291    ;;
292 sparc-sun-solaris2.*)
293    machdep="sparc_mach_dep.lo"
294    ;;
295 ia64-*-*)
296    AC_DEFINE(NO_EXECUTE_PERMISSION)
297    machdep="mach_dep.lo ia64_save_regs_in_stack.lo"
298    ;;
299esac
300if test x"$machdep" = x; then
301AC_MSG_RESULT($machdep)
302   machdep="mach_dep.lo"
303fi
304addobjs="$addobjs $machdep"
305AC_SUBST(addobjs)
306AC_SUBST(addincludes)
307AC_SUBST(addlibs)
308AC_SUBST(addtests)
309
310AC_PROG_LIBTOOL
311
312#
313# Check for AViiON Machines running DGUX
314#
315AC_MSG_CHECKING(if host is AViiON running DGUX)
316ac_is_dgux=no
317AC_CHECK_HEADER(sys/dg_sys_info.h,
318[ac_is_dgux=yes;])
319
320AC_MSG_RESULT($ac_is_dgux)
321    ## :GOTCHA: we do not check anything but sys/dg_sys_info.h
322if test $ac_is_dgux = yes; then
323    if test "$enable_full_debug" = "yes"; then
324      CFLAGS="-g -mstandard -DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
325      CXXFLAGS="-g -mstandard -DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
326    else
327      CFLAGS="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
328      CXXFLAGS="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2"
329    fi
330    AC_SUBST(CFLAGS)
331    AC_SUBST(CXXFLAGS)
332fi
333
334dnl We use these options to decide which functions to include.
335AC_ARG_WITH(target-subdir,
336[  --with-target-subdir=SUBDIR
337                          configuring with a cross compiler])
338AC_ARG_WITH(cross-host,
339[  --with-cross-host=HOST  configuring with a cross compiler])
340
341# automake wants to see AC_EXEEXT.  But we don't need it.  And having
342# it is actually a problem, because the compiler we're passed can't
343# necessarily do a full link.  So we fool automake here.
344if false; then
345  # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
346  # to nothing, so nothing would remain between `then' and `fi' if it
347  # were not for the `:' below.
348  :
349  AC_EXEEXT
350fi
351
352dnl As of 4.13a2, the collector will not properly work on Solaris when
353dnl built with gcc and -O.  So we remove -O in the appropriate case.
354dnl
355AC_MSG_CHECKING(whether Solaris gcc optimization fix is necessary)
356case "$host" in
357 sparc-sun-solaris2*|*aix*)
358    if test "$GCC" = yes; then
359       AC_MSG_RESULT(yes)
360       new_CFLAGS=
361       for i in $CFLAGS; do
362	  case "$i" in
363	   -O*)
364	      ;;
365	   *)
366	      new_CFLAGS="$new_CFLAGS $i"
367	      ;;
368	  esac
369       done
370       CFLAGS="$new_CFLAGS"
371    else
372       AC_MSG_RESULT(no)
373    fi
374    ;;
375 *) AC_MSG_RESULT(no) ;;
376esac
377
378dnl We need to override the top-level CFLAGS.  This is how we do it.
379MY_CFLAGS="$CFLAGS"
380AC_SUBST(MY_CFLAGS)
381
382dnl Include defines that have become de facto standard.
383dnl ALL_INTERIOR_POINTERS can be overridden in startup code.
384AC_DEFINE(SILENT)
385AC_DEFINE(NO_SIGNALS)
386AC_DEFINE(ALL_INTERIOR_POINTERS)
387
388dnl By default, make the library as general as possible.
389AC_DEFINE(JAVA_FINALIZATION)
390AC_DEFINE(GC_GCJ_SUPPORT)
391AC_DEFINE(ATOMIC_UNCOLLECTABLE)
392
393dnl This is something of a hack.  When cross-compiling we turn off
394dnl some functionality. These is only correct when targetting an
395dnl embedded system.  FIXME.
396if test -n "${with_cross_host}"; then
397   AC_DEFINE(NO_SIGSET)
398   AC_DEFINE(NO_DEBUGGING)
399fi
400
401AC_ARG_ENABLE(full-debug,
402[  --enable-full-debug	include full support for pointer backtracing etc.],
403[ if test "$enable_full_debug" = "yes"; then
404    AC_MSG_WARN("Must define GC_DEBUG and use debug alloc. in clients.")
405    AC_DEFINE(KEEP_BACK_PTRS)
406    AC_DEFINE(DBG_HDRS_ALL)
407    case $host in
408      ia64-*-linux* )
409	AC_DEFINE(MAKE_BACK_GRAPH)
410      ;;
411      x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* )
412	AC_DEFINE(MAKE_BACK_GRAPH)
413	AC_MSG_WARN("Client must not use -fomit-frame-pointer.")
414	AC_DEFINE(SAVE_CALL_COUNT, 8)
415      ;;
416      i[3456]86-*-dgux*)
417	AC_DEFINE(MAKE_BACK_GRAPH)
418      ;;
419    esac ]
420  fi)
421
422if test -n "$with_cross_host" &&
423   test x"$with_cross_host" != x"no"; then
424  toolexecdir='$(exec_prefix)/$(target_alias)'
425  toolexeclibdir='$(toolexecdir)/lib'
426else
427  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
428  toolexeclibdir='$(libdir)'
429fi
430multi_os_directory=`$CC -print-multi-os-directory`
431case $multi_os_directory in
432  .) ;; # Avoid trailing /.
433  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
434esac
435AC_SUBST(toolexecdir)
436AC_SUBST(toolexeclibdir)
437
438if test "${multilib}" = "yes"; then
439  multilib_arg="--enable-multilib"
440else
441  multilib_arg=
442fi
443
444AC_OUTPUT(Makefile include/Makefile, [
445dnl Put all the -I and -D options in a file.
446echo "$INCLUDES $DEFS" > boehm-cflags
447
448if test -n "$CONFIG_FILES"; then
449  LD="${ORIGINAL_LD_FOR_MULTILIBS}"
450  ac_file=Makefile . ${gc_basedir}/../config-ml.in
451fi],
452srcdir=${srcdir}
453host=${host}
454target=${target}
455with_multisubdir=${with_multisubdir}
456ac_configure_args="${multilib_arg} ${ac_configure_args}"
457CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
458gc_basedir=${gc_basedir}
459CC="${CC}"
460ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
461DEFS="$DEFS"
462INCLUDES="$INCLUDES"
463)
464