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root/cebix/SheepShaver/src/Unix/configure.ac

Comparing SheepShaver/src/Unix/configure.ac (file contents):
Revision 1.37 by gbeauche, 2005-07-10T15:43:33Z vs.
Revision 1.61 by gbeauche, 2007-12-30T09:15:00Z

#	Line 1 | Line 1
1		dnl Process this file with autoconf to produce a configure script.
2		dnl Written in 2002 by Christian Bauer
3
4	<	AC_INIT([SheepShaver], 2.2, [Christian.Bauer@uni-mainz.de], SheepShaver)
4	>	AC_INIT([SheepShaver], 2.3, [Christian.Bauer@uni-mainz.de], SheepShaver)
5		AC_CONFIG_SRCDIR(main_unix.cpp)
6		AC_PREREQ(2.52)
7		AC_CONFIG_HEADER(config.h)
#	Line 28 | Line 28 | AC_ARG_ENABLE(fbdev-dga,    [  --enable-
28		AC_ARG_ENABLE(xf86-dga,     [  --enable-xf86-dga       use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
29		AC_ARG_ENABLE(xf86-vidmode, [  --enable-xf86-vidmode   use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
30		AC_ARG_ENABLE(vosf,         [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
31	+	AC_ARG_ENABLE(standalone-gui,[  --enable-standalone-gui enable a standalone GUI prefs editor [default=no]], [WANT_STANDALONE_GUI=$enableval], [WANT_STANDALONE_GUI=no])
32		AC_ARG_WITH(esd,            [  --with-esd              support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
33		AC_ARG_WITH(gtk,            [  --with-gtk              use GTK user interface [default=yes]],
34		[case "$withval" in
#	Line 105 | Line 106 | if [[ "x$WANT_MON" = "xyes" ]]; then
106		if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
107		AC_MSG_RESULT(yes)
108		AC_DEFINE(ENABLE_MON, 1, [Define if using "mon".])
109	<	MONSRCS="$mon_srcdir/mon.cpp $mon_srcdir/mon_6502.cpp $mon_srcdir/mon_z80.cpp $mon_srcdir/mon_cmd.cpp $mon_srcdir/mon_lowmem.cpp $mon_srcdir/mon_disass.cpp $mon_srcdir/mon_ppc.cpp $mon_srcdir/disass/floatformat.c $mon_srcdir/disass/i386-dis.c $mon_srcdir/disass/m68k-dis.c $mon_srcdir/disass/m68k-opc.c"
109	>	MONSRCS="$mon_srcdir/mon.cpp $mon_srcdir/mon_6502.cpp $mon_srcdir/mon_z80.cpp $mon_srcdir/mon_cmd.cpp $mon_srcdir/mon_lowmem.cpp $mon_srcdir/mon_disass.cpp $mon_srcdir/mon_ppc.cpp $mon_srcdir/disass/floatformat.c $mon_srcdir/disass/i386-dis.c $mon_srcdir/disass/m68k-dis.c $mon_srcdir/disass/m68k-opc.c $mon_srcdir/disass/mips-dis.c $mon_srcdir/disass/mips-opc.c $mon_srcdir/disass/mips16-opc.c"
110		CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
111		AC_CHECK_LIB(ncurses, tgetent, ,
112		AC_CHECK_LIB(termcap, tgetent, ,
#	Line 125 | Line 126 | AC_SUBST(MONSRCS)
126
127		dnl Checks for libraries.
128		AC_CHECK_LIB(posix4, sem_init)
129	+	AC_CHECK_LIB(m, cos)
130
131		dnl Do we need SDL?
132		WANT_SDL=no
#	Line 243 | Line 245 | dnl We use GTK+ if possible.
245		UISRCS=../dummy/prefs_editor_dummy.cpp
246		case "x$WANT_GTK" in
247		xgtk2*)
248	+	WANT_GTK=no
249		AM_PATH_GTK_2_0(1.3.15, [
250	<	AC_DEFINE(ENABLE_GTK, 1, [Define if using GTK.])
251	<	CFLAGS="$CFLAGS $GTK_CFLAGS"
249	<	CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
250	<	LIBS="$LIBS $GTK_LIBS"
251	<	UISRCS=prefs_editor_gtk.cpp
250	>	GUI_CFLAGS="$GTK_CFLAGS"
251	>	GUI_LIBS="$GTK_LIBS"
252		WANT_GTK=gtk2
253		], [
254		case "x${WANT_GTK}x" in
#	Line 259 | Line 259 | xgtk2*)
259		*)
260		AC_MSG_WARN([Could not find GTK+, disabling user interface.])
261		WANT_GTK=no
262	<	;;
262	>	;;
263		esac
264		])
265		;;
266		esac
267		if [[ "x$WANT_GTK" = "xgtk" ]]; then
268	+	WANT_GTK=no
269		AM_PATH_GTK(1.2.0, [
270	<	AC_DEFINE(ENABLE_GTK, 1, [Define if using GTK.])
271	<	CFLAGS="$CFLAGS $GTK_CFLAGS"
272	<	CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
272	<	LIBS="$LIBS $GTK_LIBS"
273	<	UISRCS=prefs_editor_gtk.cpp
270	>	GUI_CFLAGS="$GTK_CFLAGS"
271	>	GUI_LIBS="$GTK_LIBS"
272	>	WANT_GTK=gtk
273		], [
274		AC_MSG_WARN([Could not find GTK+, disabling user interface.])
276	–	WANT_GTK=no
275		])
276		fi
277	+	if [[ "x$WANT_GTK" != "xno" -a "x$WANT_STANDALONE_GUI" = "xno" ]]; then
278	+	AC_DEFINE(ENABLE_GTK, 1, [Define if using GTK.])
279	+	UISRCS=prefs_editor_gtk.cpp
280	+	fi
281	+	AC_SUBST(GUI_CFLAGS)
282	+	AC_SUBST(GUI_LIBS)
283	+
284	+	dnl Build external GUI if requested.
285	+	if [[ "$WANT_STANDALONE_GUI" != "yes" ]]; then
286	+	WANT_STANDALONE_GUI=no
287	+	fi
288	+	if [[ "$WANT_GTK" = "no" ]]; then
289	+	WANT_STANDALONE_GUI=no
290	+	fi
291	+	AC_SUBST(STANDALONE_GUI, [$WANT_STANDALONE_GUI])
292
293		dnl We use ESD if possible.
294		if [[ "x$WANT_ESD" = "xyes" ]]; then
295	+	WANT_ESD=no
296		AM_PATH_ESD(0.2.8, [
297		AC_DEFINE(ENABLE_ESD, 1, [Define is using ESD.])
298		CFLAGS="$CFLAGS $ESD_CFLAGS"
299		CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
300		LIBS="$LIBS $ESD_LIBS"
301	+	WANT_ESD=yes
302		], [
303		AC_MSG_WARN([Could not find ESD, disabling ESD support.])
289	–	WANT_ESD=no
304		])
305		fi
306
#	Line 431 | Line 445 | AC_CHECK_FILE([/dev/ptc],
445		)
446		dnl (end of code from openssh-3.2.2p1 configure.ac)
447
448	+	dnl Check for systems where POSIX-style non-blocking I/O (O_NONBLOCK)
449	+	dnl doesn't work or is unimplemented. On these systems (mostly older
450	+	dnl ones), use the old BSD-style FIONBIO approach instead. [tcl.m4]
451	+	AC_CACHE_CHECK([FIONBIO vs. O_NONBLOCK for non-blocking I/O],
452	+	ac_cv_nonblocking_io, [
453	+	case "$host" in
454	+	*-*-osf*)
455	+	ac_cv_nonblocking_io=FIONBIO
456	+	;;
457	+	*-*-sunos4*)
458	+	ac_cv_nonblocking_io=FIONBIO
459	+	;;
460	+	*-*-ultrix*)
461	+	ac_cv_nonblocking_io=FIONBIO
462	+	;;
463	+	*)
464	+	ac_cv_nonblocking_io=O_NONBLOCK
465	+	;;
466	+	esac
467	+	])
468	+	if [[ "$ac_cv_nonblocking_io" = "FIONBIO" ]]; then
469	+	AC_DEFINE(USE_FIONBIO, 1, [Define if BSD-style non-blocking I/O is to be used])
470	+	fi
471	+
472	+	dnl Check whether compiler supports byte bit-fields
473	+	AC_CACHE_CHECK([whether compiler supports byte bit-fields],
474	+	ac_cv_have_byte_bitfields, [
475	+	AC_LANG_SAVE
476	+	AC_LANG_CPLUSPLUS
477	+	AC_TRY_RUN([
478	+	struct A {
479	+	unsigned char b1:4;
480	+	unsigned char b2:4;
481	+	unsigned char c;
482	+	unsigned short s;
483	+	unsigned char a[4];
484	+	};
485	+
486	+	int main(void) {
487	+	A a;
488	+	return ! (sizeof(A) == 8 && &a.c == ((unsigned char *)&a + 1));
489	+	}],
490	+	[ac_cv_have_byte_bitfields=yes],
491	+	[ac_cv_have_byte_bitfields=no],
492	+	dnl When cross-compiling, assume only GCC supports this
493	+	[if [[ "$GCC" = "yes" ]]; then
494	+	ac_cv_have_byte_bitfields="guessing yes"
495	+	else
496	+	ac_cv_have_byte_bitfields="guessing no"
497	+	fi]
498	+	)
499	+	AC_LANG_RESTORE
500	+	])
501	+
502		dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES)
503	<	AC_DEFUN(AC_CHECK_FRAMEWORK, [
503	>	AC_DEFUN([AC_CHECK_FRAMEWORK], [
504		AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl
505		AC_CACHE_CHECK([whether compiler supports framework $1],
506		ac_Framework, [
507		saved_LIBS="$LIBS"
508		LIBS="$LIBS -framework $1"
509		AC_TRY_LINK(
510	<	[$2], [int main(void) { return 0; }],
510	>	[$2], [],
511		[AS_VAR_SET(ac_Framework, yes)], [AS_VAR_SET(ac_Framework, no); LIBS="$saved_LIBS"]
512		)
513		])
#	Line 453 | Line 521 | dnl Check for some MacOS X frameworks
521		AC_CHECK_FRAMEWORK(Carbon, [#include <Carbon/Carbon.h>])
522		AC_CHECK_FRAMEWORK(IOKit, [#include <IOKit/IOKitLib.h>])
523		AC_CHECK_FRAMEWORK(CoreFoundation, [#include <CoreFoundation/CoreFoundation.h>])
524	+	AC_CHECK_FRAMEWORK(CoreAudio, [#include <CoreAudio/CoreAudio.h>])
525	+	AC_CHECK_FRAMEWORK(AudioUnit, [#include <AudioUnit/AudioUnit.h>])
526	+	AC_CHECK_FRAMEWORK(AudioToolbox, [#include <AudioToolbox/AudioToolbox.h>])
527
528		dnl Select system-dependant sources.
529		SERIALSRC=serial_unix.cpp
530		ETHERSRC=../dummy/ether_dummy.cpp
531		SCSISRC=../dummy/scsi_dummy.cpp
532		AUDIOSRC=../dummy/audio_dummy.cpp
533	+	PREFSSRC=../dummy/prefs_dummy.cpp
534		EXTFSSRC=extfs_unix.cpp
535		EXTRASYSSRCS=
536		case "$target_os" in
#	Line 488 | Line 560 | darwin*)
560		EXTRASYSSRCS="$EXTRASYSSRCS ../MacOSX/sys_darwin.cpp"
561		fi
562		if [[ "x$ac_cv_framework_Carbon" = "xyes" ]]; then
563	<	EXTFSSRC=../MacOSX/extfs_macosx.mm
563	>	EXTFSSRC=../MacOSX/extfs_macosx.cpp
564	>	PREFSSRC="../MacOSX/prefs_macosx.mm ../MacOSX/PrefsEditor/PrefsEditor.mm"
565	>	CPPFLAGS="$CPPFLAGS -I../MacOSX/PrefsEditor"
566	>	fi
567	>	if [[ "x$ac_cv_framework_CoreAudio" = "xyes" ]]; then
568	>	AUDIOSRC="../MacOSX/audio_macosx.cpp ../MacOSX/AudioBackEnd.cpp ../MacOSX/AudioDevice.cpp ../MacOSX/MacOSX_sound_if.cpp"
569		fi
570		;;
571	+	irix*)
572	+	AUDIOSRC=Irix/audio_irix.cpp
573	+	LIBS="$LIBS -laudio"
574	+	WANT_ESD=no
575	+
576	+	dnl Check if our compiler supports -IPA (MIPSPro)
577	+	HAVE_IPA=no
578	+	ocflags="$CFLAGS"
579	+	CFLAGS=`echo " $CFLAGS -IPA" | sed -e "s/ -g //g"`
580	+	AC_MSG_CHECKING(if "-IPA" works)
581	+	dnl Do a test compile of an empty function
582	+	AC_TRY_COMPILE([#if defined __GNUC__
583	+	# error GCC does not support IPA yet
584	+	#endif],, [AC_MSG_RESULT(yes); HAVE_IPA=yes], AC_MSG_RESULT(no))
585	+	CFLAGS="$ocflags"
586	+	;;
587		esac
588
589		dnl Is the slirp library supported?
590	<	if [[ "x$ETHERSRC" = "xether_unix.cpp" ]]; then
590	>	case "$ac_cv_have_byte_bitfields" in
591	>	yes|"guessing yes")
592	>	CAN_SLIRP=yes
593	>	ETHERSRC=ether_unix.cpp
594	>	;;
595	>	esac
596	>	if [[ -n "$CAN_SLIRP" ]]; then
597		AC_DEFINE(HAVE_SLIRP, 1, [Define if slirp library is supported])
598		SLIRP_SRCS="\
599		../slirp/bootp.c     ../slirp/ip_output.c  ../slirp/tcp_input.c  \
#	Line 529 | Line 628 | if [[ "x$WANT_SDL_AUDIO" = "xyes" ]]; th
628		AUDIOSRC="../SDL/audio_sdl.cpp"
629		fi
630
631	<	SYSSRCS="$VIDEOSRCS $EXTFSSRC $SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $EXTRASYSSRCS"
631	>	SYSSRCS="$VIDEOSRCS $EXTFSSRC $PREFSSRC $SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $EXTRASYSSRCS"
632
633		dnl Define a macro that translates a yesno-variable into a C macro definition
634		dnl to be put into the config.h file
635		dnl $1 -- the macro to define
636		dnl $2 -- the value to translate
637		dnl $3 -- template name
638	<	AC_DEFUN(AC_TRANSLATE_DEFINE, [
638	>	AC_DEFUN([AC_TRANSLATE_DEFINE], [
639		if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
640		AC_DEFINE($1, 1, $3)
641		fi
#	Line 1178 | Line 1277 | HAVE_GCC27=no
1277		AC_MSG_CHECKING(for GCC 2.7 or higher)
1278		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5)
1279		# error gcc < 2.7
1280	+	typedef syntax error;
1281		#endif
1282		]])],
1283		[AC_MSG_RESULT(yes); HAVE_GCC27=yes],
#	Line 1188 | Line 1288 | HAVE_GCC30=no
1288		AC_MSG_CHECKING(for GCC 3.0 or higher)
1289		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ >= 3)
1290		# error gcc < 3
1291	+	typedef syntax error;
1292		#endif
1293		]])],
1294		[AC_MSG_RESULT(yes); HAVE_GCC30=yes],
#	Line 1235 | Line 1336 | if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1336		CFLAGS="$SAVED_CFLAGS"
1337		fi
1338
1339	<	dnl Add -mdynamic-no-pic for MacOS X
1340	<	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1339	>	dnl Add -mdynamic-no-pic for MacOS X (XXX icc10 will support MacOS X)
1340	>	if [[ "x$HAVE_GCC30" = "xyes" -a "x$HAVE_ICC" = "xno" ]]; then
1341		SAVED_CFLAGS="$CFLAGS"
1342		CFLAGS="$CFLAGS -mdynamic-no-pic"
1343		AC_CACHE_CHECK([whether the compiler supports -mdynamic-no-pic],
#	Line 1258 | Line 1359 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1359		../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
1360		../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
1361		../kpx_cpu/src/cpu/ppc/ppc-execute.cpp \
1362	<	../kpx_cpu/src/cpu/ppc/ppc-translate.cpp"
1362	>	../kpx_cpu/src/cpu/ppc/ppc-translate.cpp \
1363	>	../kpx_cpu/src/utils/utils-cpuinfo.cpp"
1364		CPPFLAGS="$CPPFLAGS -I../kpx_cpu/include -I../kpx_cpu/src"
1365
1366		dnl Enable JIT compiler, if possible
#	Line 1275 | Line 1377 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1377		i?86:elf)
1378		ac_cv_use_dyngen=yes
1379		;;
1380	+	mips:elf)
1381	+	ac_cv_use_dyngen=yes
1382	+	;;
1383		powerpc:mach)
1384		ac_cv_use_dyngen=yes
1385		;;
1386	+	i?86:mach)
1387	+	ac_cv_use_dyngen=yes
1388	+	;;
1389		*:*)
1390		ac_cv_use_dyngen=no
1391		;;
#	Line 1287 | Line 1395 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1395		if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_ICC" = "xno" ]]; then
1396		DYNGEN_CC=$CXX
1397		else
1398	<	for p in /usr/bin /usr/local/bin; do
1398	>	for p in /usr/bin /usr/local/bin /usr/freeware/bin; do
1399		gxx="$p/g++"
1400		if [[ -x "$gxx" ]]; then
1401		DYNGEN_CC="$gxx"
#	Line 1302 | Line 1410 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1410		if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
1411		case $host_cpu in
1412		i?86)
1413	<	DYNGEN_OP_FLAGS="-fomit-frame-pointer -mpreferred-stack-boundary=2"
1413	>	DYNGEN_OP_FLAGS="-fomit-frame-pointer"
1414	>	;;
1415	>	mips)
1416	>	DYNGEN_OP_FLAGS="-fno-delayed-branch -mno-abicalls"
1417		;;
1418		powerpc)
1419		if [[ "x$ac_cv_object_format" = "xmach" ]]; then
#	Line 1310 | Line 1421 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1421		fi
1422		;;
1423		esac
1424	<	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1425	<	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -falign-functions=0"
1424	>	have_dyngen_gcc3=no
1425	>	case "x`$DYNGEN_CC -dumpversion`" in
1426	>	x[12].*) ;;
1427	>	x*) have_dyngen_gcc3=yes ;;
1428	>	esac
1429	>	if [[ "x$have_dyngen_gcc3" = "xyes" ]]; then
1430	>	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-align-functions"
1431		else
1432		DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -malign-functions=0"
1433		fi
1434	<	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -finline-limit=10000 -fno-exceptions -g0"
1435	<	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1434	>	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -finline-functions -finline-limit=10000 -fno-exceptions -g0"
1435	>	if [[ "x$have_dyngen_gcc3" = "xyes" ]]; then
1436		DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-reorder-blocks -fno-optimize-sibling-calls"
1437		fi
1438	+	if [[ "x$DYNGEN_CC" != "x$CXX" ]]; then
1439	+	DYNGEN_CFLAGS="-O2 $CFLAGS"
1440	+	DYNGEN_CXXFLAGS="-O2 $CXXFLAGS"
1441	+	else
1442	+	DYNGEN_CFLAGS="\$(CFLAGS)"
1443	+	DYNGEN_CXXFLAGS="\$(CXXFLAGS)"
1444	+	fi
1445		else
1446		WANT_JIT=no
1447		fi
#	Line 1330 | Line 1453 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1453		CPUSRCS="\
1454		../kpx_cpu/src/cpu/jit/jit-cache.cpp \
1455		../kpx_cpu/src/cpu/jit/basic-dyngen.cpp \
1456	<	../kpx_cpu/src/cpu/ppc/ppc-dyngen.cpp $CPUSRCS"
1456	>	../kpx_cpu/src/cpu/ppc/ppc-dyngen.cpp \
1457	>	../kpx_cpu/src/cpu/ppc/ppc-jit.cpp $CPUSRCS"
1458		fi
1459		fi
1460		CPUSRCS="$CPUSRCS ../kpx_cpu/sheepshaver_glue.cpp"
1461		else
1462		WANT_JIT=no
1463		fi
1340	–	if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
1341	–	AC_CACHE_CHECK([whether static data regions are executable],
1342	–	ac_cv_have_static_data_exec, [
1343	–	AC_TRY_RUN([int main(void) {
1344	–	#if defined(__powerpc__) || defined(__ppc__)
1345	–	static unsigned int p[8] = {0x4e800020,};
1346	–	asm volatile("dcbst 0,%0" : : "r" (p) : "memory");
1347	–	asm volatile("sync" : : : "memory");
1348	–	asm volatile("icbi 0,%0" : : "r" (p) : "memory");
1349	–	asm volatile("sync" : : : "memory");
1350	–	asm volatile("isync" : : : "memory");
1351	–	((void (*)(void))p)();
1352	–	return 0;
1353	–	#endif
1354	–	return 1;
1355	–	}], ac_cv_have_static_data_exec=yes, ac_cv_have_static_data_exec=no,
1356	–	dnl When cross-compiling, do not assume anything.
1357	–	ac_cv_have_static_data_exec=no
1358	–	)
1359	–	])
1360	–	else
1361	–	ac_cv_use_dyngen=no
1362	–	fi
1363	–	AC_TRANSLATE_DEFINE(HAVE_STATIC_DATA_EXEC, "$ac_cv_have_static_data_exec",
1364	–	[Define if your system marks static data pages as executable.])
1365	–
1464		if [[ "x$WANT_JIT" = "xyes" ]]; then
1465		CPPFLAGS="$CPPFLAGS -DUSE_JIT"
1466		fi
1467
1468	+	dnl Higher level optimizations with MIPSPro compilers are possible
1469	+	if [[ "x$HAVE_IPA" = "xyes" ]]; then
1470	+	CFLAGS="`echo $CFLAGS | sed -e 's/-g//g'` -O3 -OPT:Olimit=0 -IPA"
1471	+	CXXFLAGS="`echo $CXXFLAGS | sed -e 's/-g//g'` -O3 -OPT:Olimit=0 -IPA"
1472	+	CXXFLAGS="-LANG:std $CXXFLAGS"
1473	+	LDFLAGS="$LDFLAGS -O3 -OPT:Olimit=0 -IPA"
1474	+	fi
1475	+
1476	+	dnl Check for linker script support
1477	+	case $target_os:$target_cpu in
1478	+	linux*:i?86)    LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
1479	+	linux*:x86_64)  LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-x86_64.ld";;
1480	+	linux*:powerpc) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-ppc.ld";;
1481	+	netbsd*:i?86)   LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
1482	+	freebsd*:i?86)  LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/freebsd-i386.ld";;
1483	+	darwin*:*)      LINKER_SCRIPT_FLAGS="-Wl,-seg1addr,0x78048000";;
1484	+	esac
1485	+	if [[ -n "$LINKER_SCRIPT_FLAGS" ]]; then
1486	+	AC_CACHE_CHECK([whether linker script is usable],
1487	+	ac_cv_linker_script_works, [
1488	+	AC_LANG_SAVE
1489	+	AC_LANG_CPLUSPLUS
1490	+	saved_LDFLAGS="$LDFLAGS"
1491	+	LDFLAGS="$LDFLAGS $LINKER_SCRIPT_FLAGS"
1492	+	AC_TRY_RUN(
1493	+	[int main() {if ((char *)&main < (char *)0x70000000) return 1;}],
1494	+	[ac_cv_linker_script_works=yes],
1495	+	[ac_cv_linker_script_works=no],
1496	+	dnl When cross-compiling, assume it works
1497	+	[ac_cv_linker_script_works="guessing yes"]
1498	+	)
1499	+	AC_LANG_RESTORE
1500	+	if [[ "$ac_cv_linker_script_works" = "no" ]]; then
1501	+	LDFLAGS="$saved_LDFLAGS"
1502	+	LINKER_SCRIPT_FLAGS=""
1503	+	fi
1504	+	])
1505	+	fi
1506	+	AC_TRANSLATE_DEFINE(HAVE_LINKER_SCRIPT, "$ac_cv_linker_script_works",
1507	+	[Define if there is a linker script to relocate the executable above 0x70000000.])
1508	+
1509		dnl Generate Makefile.
1510		AC_SUBST(PERL)
1511		AC_SUBST(USE_DYNGEN, [$ac_cv_use_dyngen])
1512		AC_SUBST(DYNGENSRCS)
1513		AC_SUBST(DYNGEN_CC)
1514	+	AC_SUBST(DYNGEN_CFLAGS)
1515	+	AC_SUBST(DYNGEN_CXXFLAGS)
1516		AC_SUBST(DYNGEN_OP_FLAGS)
1517		AC_SUBST(SYSSRCS)
1518		AC_SUBST(CPUSRCS)

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