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configure.in @ 16960

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Revision 16960, 25.4 KB checked in by ghudson, 22 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r16959, which included commits to RCS files with non-trunk default branches.

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1	dnl Process this with autoconf to create configure
2	AC_INIT(java/lang/System.java)
3
4	AC_PROG_LN_S
5
6	dnl We use these options to decide which functions to include.
7	AC_ARG_WITH(target-subdir,
8	[ --with-target-subdir=SUBDIR
9	configuring in a subdirectory])
10	AC_ARG_WITH(cross-host,
11	[ --with-cross-host=HOST configuring with a cross compiler])
12
13	LIBGCJ_CONFIGURE(.)
14
15	AM_CONFIG_HEADER(include/config.h)
16
17	# Only use libltdl for native builds.
18	if test -z "${with_cross_host}"; then
19	AC_LIBLTDL_CONVENIENCE
20	AC_LIBTOOL_DLOPEN
21	DIRLTDL=libltdl
22	AC_DEFINE(USE_LTDL)
23	# Sigh. Libtool's macro doesn't do the right thing.
24	INCLTDL="-I\$(top_srcdir)/libltdl $INCLTDL"
25	# FIXME: this is a hack.
26	sub_auxdir="`cd $ac_aux_dir && pwd`"
27	ac_configure_args="$ac_configure_args --with-auxdir=$sub_auxdir"
28	fi
29	AC_SUBST(INCLTDL)
30	AC_SUBST(LIBLTDL)
31	AC_SUBST(DIRLTDL)
32	AM_PROG_LIBTOOL
33	AC_CONFIG_SUBDIRS($DIRLTDL)
34
35	if test -z "$with_target_subdir" \|\| test "$with_target_subdir" = "."; then
36	COMPPATH=.
37	else
38	COMPPATH=..
39	fi
40	AC_SUBST(COMPPATH)
41
42	dnl The -no-testsuite modules omit the test subdir.
43	AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
44
45	dnl See whether the user prefers size or speed for Character.
46	dnl The default is size.
47	AC_ARG_ENABLE(fast-character,
48	[ --enable-fast-character prefer speed over size for Character],
49	# Nothing
50	, AC_DEFINE(COMPACT_CHARACTER))
51
52	dnl Should the runtime set system properties by examining the
53	dnl environment variable GCJ_PROPERTIES?
54	AC_ARG_ENABLE(getenv-properties,
55	[ --disable-getenv-properties
56	don't set system properties from GCJ_PROPERTIES])
57
58	dnl Whether GCJ_PROPERTIES is used depends on the target.
59	if test -n "$enable_getenv_properties"; then
60	enable_getenv_properties=${enable_getenv_properties_default-yes}
61	fi
62	if test "$enable_getenv_properties" = no; then
63	AC_DEFINE(DISABLE_GETENV_PROPERTIES)
64	fi
65
66	dnl See if the user has requested runtime debugging.
67	LIBGCJDEBUG="false"
68	AC_SUBST(LIBGCJDEBUG)
69	AC_ARG_ENABLE(libgcj-debug,
70	[ --enable-libgcj-debug enable runtime debugging code],
71	if test "$enable_libgcj_debug" = yes; then
72	AC_DEFINE(DEBUG)
73	LIBGCJDEBUG="true"
74	fi)
75
76	dnl See if the user has the interpreter included.
77	AC_ARG_ENABLE(interpreter,
78	[ --enable-interpreter enable interpreter],
79	if test "$enable_interpreter" = yes; then
80	# This can also be set in configure.host.
81	libgcj_interpreter=yes
82	elif test "$enable_interpreter" = no; then
83	libgcj_interpreter=no
84	fi)
85
86	if test "$libgcj_interpreter" = yes; then
87	AC_DEFINE(INTERPRETER)
88	fi
89
90	AC_MSG_CHECKING([for exception model to use])
91	AC_LANG_SAVE
92	AC_LANG_CPLUSPLUS
93	AC_ARG_ENABLE(sjlj-exceptions,
94	[ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
95	[:],
96	[dnl Botheration. Now we've got to detect the exception model.
97	dnl Link tests against libgcc.a are problematic since -- at least
98	dnl as of this writing -- we've not been given proper -L bits for
99	dnl single-tree newlib and libgloss.
100	dnl
101	dnl This is what AC_TRY_COMPILE would do if it didn't delete the
102	dnl conftest files before we got a change to grep them first.
103	cat > conftest.$ac_ext << EOF
104	[#]line __oline__ "configure"
105	struct S { ~S(); };
106	void bar();
107	void foo()
108	{
109	S s;
110	bar();
111	}
112	EOF
113	old_CXXFLAGS="$CXXFLAGS"
114	CXXFLAGS=-S
115	if AC_TRY_EVAL(ac_compile); then
116	if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
117	enable_sjlj_exceptions=yes
118	elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
119	enable_sjlj_exceptions=no
120	fi
121	fi
122	CXXFLAGS="$old_CXXFLAGS"
123	rm -f conftest*])
124	if test x$enable_sjlj_exceptions = xyes; then
125	AC_DEFINE(SJLJ_EXCEPTIONS, 1,
126	[Define if the compiler is configured for setjmp/longjmp exceptions.])
127	ac_exception_model_name=sjlj
128	elif test x$enable_sjlj_exceptions = xno; then
129	ac_exception_model_name="call frame"
130	else
131	AC_MSG_ERROR([unable to detect exception model])
132	fi
133	AC_LANG_RESTORE
134	AC_MSG_RESULT($ac_exception_model_name)
135
136	AC_MSG_CHECKING([for data_start])
137	LIBDATASTARTSPEC=
138	NEEDS_DATA_START=
139	AC_TRY_LINK([extern int data_start;], [return ((int) &data_start);],
140	[AC_MSG_RESULT(found it)],
141	[LIBDATASTARTSPEC="-u data_start libgcjdata.a%s"
142	NEEDS_DATA_START=yes
143	AC_MSG_RESULT(missing)])
144	AC_SUBST(LIBDATASTARTSPEC)
145
146	dnl See if the user wants to disable java.net. This is the mildly
147	dnl ugly way that we admit that target-side configuration sucks.
148	AC_ARG_ENABLE(java-net,
149	[ --disable-java-net disable java.net])
150
151	dnl Whether java.net is built by default can depend on the target.
152	if test -n "$enable_java_net"; then
153	enable_java_net=${enable_java_net_default-yes}
154	fi
155	if test "$enable_java_net" = no; then
156	AC_DEFINE(DISABLE_JAVA_NET)
157	fi
158
159	dnl See if the user wants to disable JVMPI support.
160	AC_ARG_ENABLE(jvmpi,
161	[ --disable-jvmpi disable JVMPI support])
162
163	if test "$enable_jvmpi" != no; then
164	AC_DEFINE(ENABLE_JVMPI)
165	fi
166
167	dnl If the target is an eCos system, use the appropriate eCos
168	dnl I/O routines.
169	dnl FIXME: this should not be a local option but a global target
170	dnl system; at present there is no eCos target.
171	TARGET_ECOS="no"
172	AC_ARG_WITH(ecos,
173	[ --with-ecos enable runtime eCos target support],
174	TARGET_ECOS="$with_ecos"
175	)
176
177	case "$TARGET_ECOS" in
178	no)
179	FILE_DESCRIPTOR=natFileDescriptorPosix.cc
180	PROCESS=${PROCESS-Posix}
181	;;
182	*)
183	FILE_DESCRIPTOR=natFileDescriptorEcos.cc
184	PROCESS=Ecos
185	AC_DEFINE(ECOS)
186	;;
187	esac
188
189	AC_EGREP_HEADER(uint32_t, stdint.h, AC_DEFINE(HAVE_INT32_DEFINED))
190	AC_EGREP_HEADER(uint32_t, inttypes.h, AC_DEFINE(HAVE_INT32_DEFINED))
191	AC_EGREP_HEADER(u_int32_t, sys/types.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED))
192	AC_EGREP_HEADER(u_int32_t, sys/config.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED))
193
194
195	dnl These may not be defined in a non-ANS conformant embedded system.
196	dnl FIXME: Should these case a runtime exception in that case?
197	AC_EGREP_HEADER(mktime, time.h, AC_DEFINE(HAVE_MKTIME))
198	AC_EGREP_HEADER(localtime, time.h, AC_DEFINE(HAVE_LOCALTIME))
199
200	dnl Create the subdirectory for natFileDescriptor.cc, or the attempt
201	dnl to create the link will fail.
202	test -d java \|\| mkdir java
203	test -d java/io \|\| mkdir java/io
204	test -d gnu \|\| mkdir gnu
205	AC_LINK_FILES(java/io/$FILE_DESCRIPTOR, java/io/natFileDescriptor.cc)
206
207	dnl Likewise for ConcreteProcess.java and natConcreteProcess.cc.
208	test -d java/lang \|\| mkdir java/lang
209	AC_LINK_FILES(java/lang/${PROCESS}Process.java, java/lang/ConcreteProcess.java)
210	AC_LINK_FILES(java/lang/nat${PROCESS}Process.cc, java/lang/natConcreteProcess.cc)
211
212	SYSTEMSPEC=
213	AC_SUBST(SYSTEMSPEC)
214
215	LIBGCJTESTSPEC="-L`pwd`/.libs -rpath `pwd`/.libs"
216	AC_SUBST(LIBGCJTESTSPEC)
217
218	AC_ARG_WITH(system-zlib,
219	[ --with-system-zlib use installed libz])
220	ZLIBSPEC=
221	AC_SUBST(ZLIBSPEC)
222	ZLIBTESTSPEC=
223	AC_SUBST(ZLIBTESTSPEC)
224
225	dnl FIXME: this should be _libs on some hosts.
226	libsubdir=.libs
227
228	dnl Allow the GC to be disabled. Can be useful when debugging.
229	AC_MSG_CHECKING([for garbage collector to use])
230	AC_ARG_ENABLE(java-gc,
231	changequote(<<,>>)dnl
232	<< --enable-java-gc=TYPE choose garbage collector [boehm]>>,
233	changequote([,])
234	GC=$enableval,
235	GC=boehm)
236	GCLIBS=
237	GCINCS=
238	GCDEPS=
239	GCOBJS=
240	GCSPEC=
241	JC1GCSPEC=
242	GCTESTSPEC=
243	case "$GC" in
244	boehm)
245	AC_MSG_RESULT(boehm)
246	GCDEPS='$(top_builddir)/../boehm-gc/libgcjgc.la'
247	# We include the path to the boehm-gc build directory.
248	# See Makefile.am to understand why.
249	GCLIBS="$GCDEPS -L\$(here)/../boehm-gc/$libsubdir"
250	GCINCS='-I$(top_srcdir)/../boehm-gc -I$(top_builddir)/../boehm-gc'
251	GCSPEC='-lgcjgc'
252	JC1GCSPEC='-fuse-boehm-gc'
253	GCTESTSPEC="-L`pwd`/../boehm-gc/.libs -rpath `pwd`/../boehm-gc/.libs"
254	dnl We also want to pick up some cpp flags required when including
255	dnl boehm-config.h. Yuck.
256	GCINCS="$GCINCS `cat ../boehm-gc/boehm-cflags`"
257	GCOBJS=boehm.lo
258	GCHDR=boehm-gc.h
259	dnl The POSIX thread support needs to know this.
260	AC_DEFINE(HAVE_BOEHM_GC)
261	;;
262	no)
263	AC_MSG_RESULT(none)
264	GCOBJS=nogc.lo
265	GCHDR=no-gc.h
266	;;
267	*)
268	AC_MSG_ERROR(unrecognized collector \"$GC\")
269	;;
270	esac
271	AC_SUBST(GCLIBS)
272	AC_SUBST(GCINCS)
273	AC_SUBST(GCDEPS)
274	AC_SUBST(GCOBJS)
275	AC_SUBST(GCSPEC)
276	AC_SUBST(JC1GCSPEC)
277	AC_SUBST(GCTESTSPEC)
278	AC_LINK_FILES(include/$GCHDR, include/java-gc.h)
279
280
281	AC_MSG_CHECKING([for thread model used by GCC])
282	THREADS=`$CC -v 2>&1 \| sed -n 's/^Thread model: //p'`
283	AC_MSG_RESULT([$THREADS])
284
285	case "$THREADS" in
286	no \| none \| single)
287	THREADS=none
288	;;
289	posix \| pthreads)
290	THREADS=posix
291	case "$host" in
292	--linux*)
293	AC_DEFINE(LINUX_THREADS)
294	;;
295	esac
296	;;
297	decosf1 \| irix \| mach \| os2 \| solaris \| win32 \| dce \| vxworks)
298	AC_MSG_ERROR(thread package $THREADS not yet supported)
299	;;
300	*)
301	AC_MSG_ERROR($THREADS is an unknown thread package)
302	;;
303	esac
304
305	THREADLIBS=
306	THREADINCS=
307	THREADDEPS=
308	THREADOBJS=
309	THREADH=
310	THREADSPEC=
311	case "$THREADS" in
312	posix)
313	THREADLIBS=-lpthread
314	THREADSPEC=-lpthread
315	THREADOBJS=posix-threads.lo
316	THREADH=posix-threads.h
317	# MIT pthreads doesn't seem to have the mutexattr functions.
318	# But for now we don't check for it. We just assume you aren't
319	# using MIT pthreads.
320	AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT)
321
322	# If we're using the Boehm GC, then we happen to know that it
323	# defines _REENTRANT, so we don't bother. Eww.
324	if test "$GC" != boehm; then
325	AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
326	fi
327	AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1, [Required define if using POSIX threads])
328	;;
329
330	none)
331	THREADOBJS=no-threads.lo
332	THREADH=no-threads.h
333	;;
334	esac
335	AC_LINK_FILES(include/$THREADH, include/java-threads.h)
336	AC_SUBST(THREADLIBS)
337	AC_SUBST(THREADINCS)
338	AC_SUBST(THREADDEPS)
339	AC_SUBST(THREADOBJS)
340	AC_SUBST(THREADSPEC)
341
342	AM_CONDITIONAL(USING_GCC, test "$GCC" = yes)
343
344	CANADIAN=no
345	NULL_TARGET=no
346	NATIVE=yes
347
348	# Find unwind.h and support headers. If we're in the tree with
349	# gcc, then look there. Otherwise look in compat-include. If all else
350	# fails, just hope the user has set things up somehow.
351	echo "probing $srcdir/../gcc/unwind.h"
352	if test -r $libgcj_basedir/../gcc/unwind.h; then
353	GCC_UNWIND_INCLUDE='-I$(libgcj_basedir)/../gcc'
354	else
355	if test -d $srcdir/../compat-include; then
356	GCC_UNWIND_INCLUDE='-I$(top_srcdir)/../compat-include'
357	else
358	GCC_UNWIND_INCLUDE=
359	fi
360	fi
361
362	if test -n "${with_cross_host}"; then
363	# We are being configured with a cross compiler. AC_REPLACE_FUNCS
364	# may not work correctly, because the compiler may not be able to
365	# link executables.
366
367	# We assume newlib. This lets us hard-code the functions we know
368	# we'll have.
369	AC_DEFINE(HAVE_MEMMOVE)
370	AC_DEFINE(HAVE_MEMCPY)
371	AC_DEFINE(HAVE_STRERROR)
372	AC_DEFINE(HAVE_GMTIME_R)
373	AC_DEFINE(HAVE_LOCALTIME_R)
374	dnl This is only for POSIX threads.
375	AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT)
376	dnl We also assume we are using gcc, which provides alloca.
377	AC_DEFINE(HAVE_ALLOCA)
378
379	dnl Assume we do not have getuid and friends.
380	AC_DEFINE(NO_GETUID)
381
382	ZLIBSPEC=-lzgcj
383	ZLIBTESTSPEC="-L`pwd`/../zlib/.libs -rpath `pwd`/../zlib/.libs"
384
385	# If Canadian cross, then don't pick up tools from the build
386	# directory.
387	if test x"$build" != x"$with_cross_host" && x"$build" != x"$target"; then
388	CANADIAN=yes
389	GCC_UNWIND_INCLUDE=
390	GCJ="${target_alias}-gcj"
391	fi
392	NATIVE=no
393	else
394	AC_CHECK_FUNCS(strerror ioctl select fstat open fsync sleep)
395	AC_CHECK_FUNCS(gmtime_r localtime_r readdir_r getpwuid_r getcwd)
396	AC_CHECK_FUNCS(access stat mkdir rename rmdir unlink realpath utime chmod)
397	AC_CHECK_FUNCS(nl_langinfo setlocale)
398	AC_CHECK_FUNCS(inet_aton inet_addr, break)
399	AC_CHECK_FUNCS(inet_pton uname inet_ntoa)
400	AC_CHECK_FUNCS(backtrace fork execvp pipe)
401	AC_CHECK_HEADERS(execinfo.h unistd.h dlfcn.h)
402	AC_CHECK_LIB(dl, dladdr, [
403	AC_DEFINE(HAVE_DLADDR)])
404	AC_CHECK_FILES(/proc/self/exe, [
405	AC_DEFINE(HAVE_PROC_SELF_EXE)])
406
407	AM_ICONV
408
409	AC_CHECK_FUNCS(gethostbyname_r, [
410	AC_DEFINE(HAVE_GETHOSTBYNAME_R)
411	# There are two different kinds of gethostbyname_r.
412	# We look for the one that returns `int'.
413	# Hopefully this check is robust enough.
414	AC_EGREP_HEADER(int.*gethostbyname_r, netdb.h, [
415	AC_DEFINE(GETHOSTBYNAME_R_RETURNS_INT)])
416
417	case " $GCINCS " in
418	" -D_REENTRANT ") ;;
419	*)
420	dnl On DU4.0, gethostbyname_r is only declared with -D_REENTRANT
421	AC_CACHE_CHECK([whether gethostbyname_r declaration requires -D_REENTRANT],
422	[libjava_cv_gethostbyname_r_needs_reentrant],
423	[ AC_LANG_SAVE
424	AC_LANG_CPLUSPLUS
425	AC_TRY_COMPILE([#include <netdb.h>],
426	[gethostbyname_r("", 0, 0);],
427	[libjava_cv_gethostbyname_r_needs_reentrant=no], [dnl
428	CPPFLAGS_SAVE="$CPPFLAGS"
429	CPPFLAGS="$CPPFLAGS -D_REENTRANT"
430	AC_TRY_COMPILE([#include <netdb.h>], [gethostbyname_r("", 0, 0);],
431	[libjava_cv_gethostbyname_r_needs_reentrant=yes],
432	[libjava_cv_gethostbyname_r_needs_reentrant=fail])
433	CPPFLAGS="$CPPFLAGS_SAVE"
434	])
435	AC_LANG_RESTORE
436	])
437	if test "x$libjava_cv_gethostbyname_r_needs_reentrant" = xyes; then
438	AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
439	fi
440	;;
441	esac
442
443	AC_CACHE_CHECK([for struct hostent_data],
444	[libjava_cv_struct_hostent_data], [dnl
445	AC_TRY_COMPILE([
446	#if GETHOSTBYNAME_R_NEEDS_REENTRANT && !defined(_REENTRANT)
447	# define _REENTRANT 1
448	#endif
449	#include <netdb.h>], [struct hostent_data data;],
450	[libjava_cv_struct_hostent_data=yes],
451	[libjava_cv_struct_hostent_data=no])])
452	if test "x$libjava_cv_struct_hostent_data" = xyes; then
453	AC_DEFINE(HAVE_STRUCT_HOSTENT_DATA, 1,
454	[Define if struct hostent_data is defined in netdb.h])
455	fi
456	])
457
458	AC_CHECK_FUNCS(gethostbyaddr_r, [
459	AC_DEFINE(HAVE_GETHOSTBYADDR_R)
460	# There are two different kinds of gethostbyaddr_r.
461	# We look for the one that returns `int'.
462	# Hopefully this check is robust enough.
463	AC_EGREP_HEADER(int.*gethostbyaddr_r, netdb.h, [
464	AC_DEFINE(GETHOSTBYADDR_R_RETURNS_INT)])])
465
466	AC_CHECK_FUNCS(gethostname, [
467	AC_DEFINE(HAVE_GETHOSTNAME)
468	AC_EGREP_HEADER(gethostname, unistd.h, [
469	AC_DEFINE(HAVE_GETHOSTNAME_DECL)])])
470
471	# Look for these functions in the thread library, but only bother
472	# if using POSIX threads.
473	if test "$THREADS" = posix; then
474	save_LIBS="$LIBS"
475	LIBS="$LIBS $THREADLIBS"
476	# Some POSIX thread systems don't have pthread_mutexattr_settype.
477	# E.g., Solaris.
478	AC_CHECK_FUNCS(pthread_mutexattr_settype pthread_mutexattr_setkind_np)
479
480	# Look for sched_yield. Up to Solaris 2.6, it is in libposix4, since
481	# Solaris 7 the name librt is preferred.
482	AC_CHECK_FUNCS(sched_yield, , [
483	AC_CHECK_LIB(rt, sched_yield, [
484	AC_DEFINE(HAVE_SCHED_YIELD)
485	THREADLIBS="$THREADLIBS -lrt"
486	THREADSPEC="$THREADSPEC -lrt"], [
487	AC_CHECK_LIB(posix4, sched_yield, [
488	AC_DEFINE(HAVE_SCHED_YIELD)
489	THREADLIBS="$THREADLIBS -lposix4"
490	THREADSPEC="$THREADSPEC -lposix4"])])])
491	LIBS="$save_LIBS"
492
493	# We can save a little space at runtime if the mutex has m_count
494	# or __m_count. This is a nice hack for Linux.
495	AC_TRY_COMPILE([#include <pthread.h>], [
496	extern pthread_mutex_t *mutex; int q = mutex->m_count;
497	], AC_DEFINE(PTHREAD_MUTEX_HAVE_M_COUNT), [
498	AC_TRY_COMPILE([#include <pthread.h>], [
499	extern pthread_mutex_t *mutex; int q = mutex->__m_count;
500	], AC_DEFINE(PTHREAD_MUTEX_HAVE___M_COUNT))])
501	fi
502
503	# We require a way to get the time.
504	time_found=no
505	AC_CHECK_FUNCS(gettimeofday time ftime, time_found=yes)
506	if test "$time_found" = no; then
507	AC_MSG_ERROR([no function found to get the time])
508	fi
509
510	AC_CHECK_FUNCS(memmove)
511
512	# We require memcpy.
513	memcpy_found=no
514	AC_CHECK_FUNCS(memcpy, memcpy_found=yes)
515	if test "$memcpy_found" = no; then
516	AC_MSG_ERROR([memcpy is required])
517	fi
518
519	# Some library-finding code we stole from Tcl.
520	#--------------------------------------------------------------------
521	# Check for the existence of the -lsocket and -lnsl libraries.
522	# The order here is important, so that they end up in the right
523	# order in the command line generated by make. Here are some
524	# special considerations:
525	# 1. Use "connect" and "accept" to check for -lsocket, and
526	# "gethostbyname" to check for -lnsl.
527	# 2. Use each function name only once: can't redo a check because
528	# autoconf caches the results of the last check and won't redo it.
529	# 3. Use -lnsl and -lsocket only if they supply procedures that
530	# aren't already present in the normal libraries. This is because
531	# IRIX 5.2 has libraries, but they aren't needed and they're
532	# bogus: they goof up name resolution if used.
533	# 4. On some SVR4 systems, can't use -lsocket without -lnsl too.
534	# To get around this problem, check for both libraries together
535	# if -lsocket doesn't work by itself.
536	#--------------------------------------------------------------------
537
538	AC_CACHE_CHECK([for socket libraries], gcj_cv_lib_sockets,
539	[gcj_cv_lib_sockets=
540	gcj_checkBoth=0
541	unset ac_cv_func_connect
542	AC_CHECK_FUNC(connect, gcj_checkSocket=0, gcj_checkSocket=1)
543	if test "$gcj_checkSocket" = 1; then
544	unset ac_cv_func_connect
545	AC_CHECK_LIB(socket, main, gcj_cv_lib_sockets="-lsocket",
546	gcj_checkBoth=1)
547	fi
548	if test "$gcj_checkBoth" = 1; then
549	gcj_oldLibs=$LIBS
550	LIBS="$LIBS -lsocket -lnsl"
551	unset ac_cv_func_accept
552	AC_CHECK_FUNC(accept,
553	[gcj_checkNsl=0
554	gcj_cv_lib_sockets="-lsocket -lnsl"])
555	unset ac_cv_func_accept
556	LIBS=$gcj_oldLibs
557	fi
558	unset ac_cv_func_gethostbyname
559	gcj_oldLibs=$LIBS
560	LIBS="$LIBS $gcj_cv_lib_sockets"
561	AC_CHECK_FUNC(gethostbyname, ,
562	[AC_CHECK_LIB(nsl, main,
563	[gcj_cv_lib_sockets="$gcj_cv_lib_sockets -lnsl"])])
564	unset ac_cv_func_gethostbyname
565	LIBS=$gcj_oldLIBS
566	])
567	SYSTEMSPEC="$SYSTEMSPEC $gcj_cv_lib_sockets"
568
569	if test "$with_system_zlib" = yes; then
570	AC_CHECK_LIB(z, deflate, ZLIBSPEC=-lz, ZLIBSPEC=-lzgcj)
571	else
572	ZLIBSPEC=-lzgcj
573	ZLIBTESTSPEC="-L`pwd`/../zlib/.libs -rpath `pwd`/../zlib/.libs"
574	fi
575
576	# On Solaris, and maybe other architectures, the Boehm collector
577	# requires -ldl.
578	if test "$GC" = boehm; then
579	AC_CHECK_LIB(dl, main, SYSTEMSPEC="$SYSTEMSPEC -ldl")
580	fi
581
582	if test -z "${with_multisubdir}"; then
583	builddotdot=.
584	else
585	changequote(<<,>>)
586	builddotdot=`echo ${with_multisubdir} \| sed -e 's:[^/][^/]*:..:g'`
587	changequote([,])
588	fi
589	if test -x "${builddotdot}/../../gcc/gcj"; then
590	dir="`cd ${builddotdot}/../../gcc && pwd`"
591	GCJ="$dir/gcj -B`pwd`/ -B$dir/"
592	else
593	CANADIAN=yes
594	NULL_TARGET=yes
595	GCJ="gcj -B`pwd`/"
596	fi
597	fi
598
599	# Create it, so that compile/link tests don't fail
600	test -f libgcj.spec \|\| touch libgcj.spec
601
602	# We must search the source tree for java.lang, since we still don't
603	# have libgcj.jar nor java/lang/*.class
604	GCJ_SAVE_CPPFLAGS=$CPPFLAGS
605	CPPFLAGS="$CPPFLAGS -I`pwd` -I`cd $srcdir && pwd`"
606
607	# Since some classes depend on this one, we need its source available
608	# before we can do any GCJ compilation test :-(
609	if test ! -f gnu/classpath/Configuration.java; then
610	test -d gnu \|\| mkdir gnu
611	test -d gnu/classpath \|\| mkdir gnu/classpath
612	sed 's,@LIBGCJDEBUG@,$LIBGCJDEBUG,' \
613	< $srcdir/gnu/classpath/Configuration.java.in \
614	> gnu/classpath/Configuration.java
615	# We do not want to redirect the output of the grep below to /dev/null,
616	# but we add /dev/null to the input list so that grep will print the
617	# filename of Configuration.java in case it finds any matches.
618	if grep @ gnu/classpath/Configuration.java /dev/null; then
619	AC_MSG_ERROR([configure.in is missing the substitutions above])
620	fi
621	fi
622
623	LT_AC_PROG_GCJ
624
625	CPPFLAGS=$GCJ_SAVE_CPPFLAGS
626
627	dnl FIXME: cross compilation
628	AC_CHECK_SIZEOF(void *)
629
630	ZLIBS=
631	ZDEPS=
632	ZINCS=
633	if test "x$ZLIBSPEC" = "x-lzgcj"; then
634	# We include the path to the zlib build directory.
635	# See Makefile.am to understand why.
636	ZDEPS='$(top_builddir)/../zlib/libzgcj.la'
637	ZLIBS="$ZDEPS -L\$(here)/../zlib/$libsubdir"
638	ZINCS='-I$(top_srcdir)/../zlib'
639	else
640	ZLIBS="$ZLIBSPEC"
641	fi
642	AC_SUBST(ZLIBS)
643	AC_SUBST(ZDEPS)
644	AC_SUBST(ZINCS)
645	AC_SUBST(DIVIDESPEC)
646	AC_SUBST(EXCEPTIONSPEC)
647
648	AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
649	AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
650	AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes \|\| test "$NULL_TARGET" = yes)
651	AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
652	AM_CONDITIONAL(NEEDS_DATA_START, test "$NEEDS_DATA_START" = yes && test "$NATIVE" = yes)
653	AC_SUBST(GCC_UNWIND_INCLUDE)
654
655	# Determine gcj version number.
656	changequote(<<,>>)
657	gcjvers="`$GCJ -v 2>&1 \| sed -n 's/^.version $[^ ]$.*$/\1/p'`"
658	changequote([,])
659	AC_DEFINE_UNQUOTED(GCJVERSION, "$gcjvers")
660	AC_SUBST(GCJVERSION)
661
662	AC_SUBST(AM_RUNTESTFLAGS)
663
664	dnl Work around a g++ bug. Reported to gcc-bugs@gcc.gnu.org on Jan 22, 2000.
665	AC_MSG_CHECKING([for g++ -ffloat-store bug])
666	save_CFLAGS="$CFLAGS"
667	CFLAGS="-x c++ -O2 -ffloat-store"
668	AC_TRY_COMPILE([#include <math.h>], ,
669	[AC_MSG_RESULT(no)],
670	[AC_DEFINE(__NO_MATH_INLINES)
671	AC_MSG_RESULT(yes)])
672	CFLAGS="$save_CFLAGS"
673
674	dnl We check for sys/filio.h because Solaris 2.5 defines FIONREAD there.
675	dnl On that system, sys/ioctl.h will not include sys/filio.h unless
676	dnl BSD_COMP is defined; just including sys/filio.h is simpler.
677	AC_CHECK_HEADERS(unistd.h bstring.h sys/time.h sys/types.h fcntl.h sys/ioctl.h sys/filio.h sys/stat.h sys/select.h sys/socket.h netinet/in.h arpa/inet.h netdb.h pwd.h sys/config.h inttypes.h stdint.h langinfo.h locale.h)
678	dnl We avoid AC_HEADER_DIRENT since we really only care about dirent.h
679	dnl for now. If you change this, you also must update natFile.cc.
680	AC_CHECK_HEADERS(dirent.h)
681
682	AC_CHECK_TYPE([ssize_t], [int])
683
684	AC_MSG_CHECKING([for in_addr_t])
685	AC_TRY_COMPILE([#include <sys/types.h>
686	#if STDC_HEADERS
687	#include <stdlib.h>
688	#include <stddef.h>
689	#endif
690	#if HAVE_NETINET_IN_H
691	#include <netinet/in.h>
692	#endif], [in_addr_t foo;],
693	[AC_DEFINE([HAVE_IN_ADDR_T])
694	AC_MSG_RESULT(yes)],
695	[AC_MSG_RESULT(no)])
696
697	AC_MSG_CHECKING([whether struct ip_mreq is in netinet/in.h])
698	AC_TRY_COMPILE([#include <netinet/in.h>], [struct ip_mreq mreq;],
699	[AC_DEFINE(HAVE_STRUCT_IP_MREQ)
700	AC_MSG_RESULT(yes)],
701	[AC_MSG_RESULT(no)])
702
703	AC_MSG_CHECKING([whether struct ipv6_mreq is in netinet/in.h])
704	AC_TRY_COMPILE([#include <netinet/in.h>], [struct ipv6_mreq mreq6;],
705	[AC_DEFINE(HAVE_STRUCT_IPV6_MREQ)
706	AC_MSG_RESULT(yes)],
707	[AC_MSG_RESULT(no)])
708
709	AC_MSG_CHECKING([whether struct sockaddr_in6 is in netinet/in.h])
710	AC_TRY_COMPILE([#include <netinet/in.h>], [struct sockaddr_in6 addr6;],
711	[AC_DEFINE(HAVE_INET6)
712	AC_MSG_RESULT(yes)],
713	[AC_MSG_RESULT(no)])
714
715	AC_MSG_CHECKING([for socklen_t in sys/socket.h])
716	AC_TRY_COMPILE([#define _POSIX_PII_SOCKET
717	#include <sys/types.h>
718	#include <sys/socket.h>], [socklen_t x = 5;],
719	[AC_DEFINE(HAVE_SOCKLEN_T)
720	AC_MSG_RESULT(yes)],
721	[AC_MSG_RESULT(no)])
722
723	AC_MSG_CHECKING([for tm_gmtoff in struct tm])
724	AC_TRY_COMPILE([#include <time.h>], [struct tm tim; tim.tm_gmtoff = 0;],
725	[AC_DEFINE(STRUCT_TM_HAS_GMTOFF)
726	AC_MSG_RESULT(yes)],
727	[AC_MSG_RESULT(no)
728	AC_MSG_CHECKING([for global timezone variable])
729	dnl FIXME: we don't want a link check here because that won't work
730	dnl when cross-compiling. So instead we make an assumption that
731	dnl the header file will mention timezone if it exists.
732	AC_TRY_COMPILE([#include <time.h>], [long z2 = timezone;],
733	[AC_DEFINE(HAVE_TIMEZONE)
734	AC_MSG_RESULT(yes)],
735	[AC_MSG_RESULT(no)])])
736
737	AC_FUNC_ALLOCA
738
739	AC_CHECK_PROGS(PERL, perl, false)
740
741	SYSDEP_SOURCES=
742
743	case "${host}" in
744	i?86--linux)
745	SIGNAL_HANDLER=include/i386-signal.h
746	;;
747	sparc-sun-solaris*)
748	SIGNAL_HANDLER=include/sparc-signal.h
749	;;
750	# ia64-*)
751	# SYSDEP_SOURCES=sysdep/ia64.c
752	# test -d sysdep \|\| mkdir sysdep
753	# ;;
754	powerpc--linux)
755	SIGNAL_HANDLER=include/dwarf2-signal.h
756	;;
757	alpha--linux*)
758	SIGNAL_HANDLER=include/dwarf2-signal.h
759	;;
760	*)
761	SIGNAL_HANDLER=include/default-signal.h
762	;;
763	esac
764
765	# If we're using sjlj exceptions, forget what we just learned.
766	if test "$enable_sjlj_exceptions" = yes; then
767	SIGNAL_HANDLER=include/default-signal.h
768	fi
769
770	AC_SUBST(SYSDEP_SOURCES)
771
772	AC_LINK_FILES($SIGNAL_HANDLER, include/java-signal.h)
773
774	if test "${multilib}" = "yes"; then
775	multilib_arg="--enable-multilib"
776	else
777	multilib_arg=
778	fi
779
780	AC_PATH_XTRA
781
782	dnl Determine which AWT peer libraries to build
783	AC_ARG_ENABLE(java-awt,
784	[ --enable-java-awt list of AWT peer implementations to be built])
785
786	peerlibs="`echo ${enable_java_awt} \| tr ',' ' '`"
787	use_xlib_awt=""
788	use_gtk_awt=""
789
790	for peer in $peerlibs ; do
791	case $peer in
792	xlib)
793	if [test "$no_x" = yes]; then
794	echo "*** xlib peers requested but no X library available" 1>&2
795	exit 1
796	else
797	use_xlib_awt="yes"
798	fi
799	;;
800	gtk)
801	# Nothing, yet...
802	;;
803	*)
804	echo "*** unrecognised argument \"${peer}\" for --enable-java-awt" 1>&2
805	exit 1
806	esac
807	done
808
809	AM_CONDITIONAL(XLIB_AWT, test "$use_xlib_awt" = yes)
810	AM_CONDITIONAL(GTK_AWT, test "$use_gtk_awt" = yes)
811
812
813	here=`pwd`
814	AC_SUBST(here)
815
816	# We get this from the environment.
817	AC_SUBST(GCJFLAGS)
818
819	AC_OUTPUT(Makefile libgcj.spec libgcj-test.spec gnu/classpath/Configuration.java gcj/Makefile include/Makefile testsuite/Makefile,
820	[if test -n "$CONFIG_FILES"; then
821	ac_file=Makefile . ${libgcj_basedir}/../config-ml.in
822	fi
823
824	# Make subdirectories and `.d' files. Look in both srcdir and
825	# builddir for the .java files.
826	h=`pwd`
827	: > deps.mk
828	( (cd $srcdir && find . -name '*.java' -print) ;
829	find . -name '*.java' -print) \| \
830	fgrep -v testsuite \| \
831	sed -e 's/\.java/.d/' \| \
832	while read f; do
833	echo "include $f" >> deps.mk
834	test -f $f \|\| {
835	changequote(<<,>>)
836	d=`echo $f \| sed -e 's,/[^/]*$,,'`
837	changequote([,])
838	$libgcj_basedir/../mkinstalldirs $d
839	echo > $f
840	}
841	done
842	],
843	srcdir=${srcdir}
844	host=${host}
845	target=${target}
846	with_multisubdir=${with_multisubdir}
847	ac_configure_args="${multilib_arg} ${ac_configure_args}"
848	CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
849	libgcj_basedir=${libgcj_basedir}
850	CC="${CC}"
851	CXX="${CXX}"
852	)

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