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

Comparing SheepShaver/src/Unix/configure.ac (file contents):
Revision 1.42 by gbeauche, 2005-12-04T16:26:57Z vs.
Revision 1.63 by asvitkine, 2009-02-11T19:22:16Z

#	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 244 | 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 $GTK_CFLAGS"
250	<	CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
251	<	LIBS="$LIBS $GTK_LIBS"
252	<	UISRCS=prefs_editor_gtk.cpp
250	>	GUI_CFLAGS="$GTK_CFLAGS"
251	>	GUI_LIBS="$GTK_LIBS"
252		WANT_GTK=gtk2
253		], [
254		case "x${WANT_GTK}x" in
#	Line 260 | 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 $GTK_CFLAGS"
273	<	LIBS="$LIBS $GTK_LIBS"
274	<	UISRCS=prefs_editor_gtk.cpp
270	>	GUI_CFLAGS="$GTK_CFLAGS"
271	>	GUI_LIBS="$GTK_LIBS"
272	>	WANT_GTK=gtk
273		], [
274		AC_MSG_WARN([Could not find GTK+, disabling user interface.])
277	–	WANT_GTK=no
275		])
276		fi
277	+	if [[ "x$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 $ESD_LIBS"
301	+	WANT_ESD=yes
302		], [
303		AC_MSG_WARN([Could not find ESD, disabling ESD support.])
290	–	WANT_ESD=no
304		])
305		fi
306
#	Line 412 | Line 425 | mips-sony-bsd|mips-sony-newsos4)
425		*-*-cygwin*)
426		no_dev_ptmx=1
427		;;
428	+	*-*-darwin*)
429	+	no_dev_ptmx=1
430	+	;;
431		esac
432
433		if test -z "$no_dev_ptmx" ; then
#	Line 432 | Line 448 | AC_CHECK_FILE([/dev/ptc],
448		)
449		dnl (end of code from openssh-3.2.2p1 configure.ac)
450
451	+	dnl Check for systems where POSIX-style non-blocking I/O (O_NONBLOCK)
452	+	dnl doesn't work or is unimplemented. On these systems (mostly older
453	+	dnl ones), use the old BSD-style FIONBIO approach instead. [tcl.m4]
454	+	AC_CACHE_CHECK([FIONBIO vs. O_NONBLOCK for non-blocking I/O],
455	+	ac_cv_nonblocking_io, [
456	+	case "$host" in
457	+	*-*-osf*)
458	+	ac_cv_nonblocking_io=FIONBIO
459	+	;;
460	+	*-*-sunos4*)
461	+	ac_cv_nonblocking_io=FIONBIO
462	+	;;
463	+	*-*-ultrix*)
464	+	ac_cv_nonblocking_io=FIONBIO
465	+	;;
466	+	*)
467	+	ac_cv_nonblocking_io=O_NONBLOCK
468	+	;;
469	+	esac
470	+	])
471	+	if [[ "$ac_cv_nonblocking_io" = "FIONBIO" ]]; then
472	+	AC_DEFINE(USE_FIONBIO, 1, [Define if BSD-style non-blocking I/O is to be used])
473	+	fi
474	+
475	+	dnl Check whether compiler supports byte bit-fields
476	+	AC_CACHE_CHECK([whether compiler supports byte bit-fields],
477	+	ac_cv_have_byte_bitfields, [
478	+	AC_LANG_SAVE
479	+	AC_LANG_CPLUSPLUS
480	+	AC_TRY_RUN([
481	+	struct A {
482	+	unsigned char b1:4;
483	+	unsigned char b2:4;
484	+	unsigned char c;
485	+	unsigned short s;
486	+	unsigned char a[4];
487	+	};
488	+
489	+	int main(void) {
490	+	A a;
491	+	return ! (sizeof(A) == 8 && &a.c == ((unsigned char *)&a + 1));
492	+	}],
493	+	[ac_cv_have_byte_bitfields=yes],
494	+	[ac_cv_have_byte_bitfields=no],
495	+	dnl When cross-compiling, assume only GCC supports this
496	+	[if [[ "$GCC" = "yes" ]]; then
497	+	ac_cv_have_byte_bitfields="guessing yes"
498	+	else
499	+	ac_cv_have_byte_bitfields="guessing no"
500	+	fi]
501	+	)
502	+	AC_LANG_RESTORE
503	+	])
504	+
505		dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES)
506	<	AC_DEFUN(AC_CHECK_FRAMEWORK, [
506	>	AC_DEFUN([AC_CHECK_FRAMEWORK], [
507		AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl
508		AC_CACHE_CHECK([whether compiler supports framework $1],
509		ac_Framework, [
510		saved_LIBS="$LIBS"
511		LIBS="$LIBS -framework $1"
512		AC_TRY_LINK(
513	<	[$2], [int main(void) { return 0; }],
513	>	[$2], [],
514		[AS_VAR_SET(ac_Framework, yes)], [AS_VAR_SET(ac_Framework, no); LIBS="$saved_LIBS"]
515		)
516		])
#	Line 454 | Line 524 | dnl Check for some MacOS X frameworks
524		AC_CHECK_FRAMEWORK(Carbon, [#include <Carbon/Carbon.h>])
525		AC_CHECK_FRAMEWORK(IOKit, [#include <IOKit/IOKitLib.h>])
526		AC_CHECK_FRAMEWORK(CoreFoundation, [#include <CoreFoundation/CoreFoundation.h>])
527	+	AC_CHECK_FRAMEWORK(CoreAudio, [#include <CoreAudio/CoreAudio.h>])
528	+	AC_CHECK_FRAMEWORK(AudioUnit, [#include <AudioUnit/AudioUnit.h>])
529	+	AC_CHECK_FRAMEWORK(AudioToolbox, [#include <AudioToolbox/AudioToolbox.h>])
530	+	AC_CHECK_FRAMEWORK(AppKit, [])
531
532		dnl Select system-dependant sources.
533		SERIALSRC=serial_unix.cpp
534		ETHERSRC=../dummy/ether_dummy.cpp
535		SCSISRC=../dummy/scsi_dummy.cpp
536		AUDIOSRC=../dummy/audio_dummy.cpp
537	+	PREFSSRC=../dummy/prefs_dummy.cpp
538		EXTFSSRC=extfs_unix.cpp
539		EXTRASYSSRCS=
540		case "$target_os" in
#	Line 489 | Line 564 | darwin*)
564		EXTRASYSSRCS="$EXTRASYSSRCS ../MacOSX/sys_darwin.cpp"
565		fi
566		if [[ "x$ac_cv_framework_Carbon" = "xyes" ]]; then
567	<	EXTFSSRC=../MacOSX/extfs_macosx.mm
567	>	EXTFSSRC=../MacOSX/extfs_macosx.cpp
568	>	if [[ "x$ac_cv_framework_AppKit" = "xyes" ]]; then
569	>	PREFSSRC="../MacOSX/prefs_macosx.mm ../MacOSX/PrefsEditor/PrefsEditor.mm"
570	>	CPPFLAGS="$CPPFLAGS -I../MacOSX/PrefsEditor"
571	>	fi
572	>	fi
573	>	if [[ "x$ac_cv_framework_CoreAudio" = "xyes" -a "x$WANT_SDL_AUDIO" = "xno" ]]; then
574	>	AUDIOSRC="../MacOSX/audio_macosx.cpp ../MacOSX/AudioBackEnd.cpp ../MacOSX/AudioDevice.cpp ../MacOSX/MacOSX_sound_if.cpp"
575		fi
576		;;
577		irix*)
496	–	ETHERSRC=ether_unix.cpp
578		AUDIOSRC=Irix/audio_irix.cpp
579		LIBS="$LIBS -laudio"
580		WANT_ESD=no
581	+
582	+	dnl Check if our compiler supports -IPA (MIPSPro)
583	+	HAVE_IPA=no
584	+	ocflags="$CFLAGS"
585	+	CFLAGS=`echo " $CFLAGS -IPA" | sed -e "s/ -g //g"`
586	+	AC_MSG_CHECKING(if "-IPA" works)
587	+	dnl Do a test compile of an empty function
588	+	AC_TRY_COMPILE([#if defined __GNUC__
589	+	# error GCC does not support IPA yet
590	+	#endif],, [AC_MSG_RESULT(yes); HAVE_IPA=yes], AC_MSG_RESULT(no))
591	+	CFLAGS="$ocflags"
592		;;
593		esac
594
595		dnl Is the slirp library supported?
596	<	if [[ "x$ETHERSRC" = "xether_unix.cpp" ]]; then
596	>	case "$ac_cv_have_byte_bitfields" in
597	>	yes|"guessing yes")
598	>	CAN_SLIRP=yes
599	>	ETHERSRC=ether_unix.cpp
600	>	;;
601	>	esac
602	>	if [[ -n "$CAN_SLIRP" ]]; then
603		AC_DEFINE(HAVE_SLIRP, 1, [Define if slirp library is supported])
604		SLIRP_SRCS="\
605		../slirp/bootp.c     ../slirp/ip_output.c  ../slirp/tcp_input.c  \
#	Line 536 | Line 634 | if [[ "x$WANT_SDL_AUDIO" = "xyes" ]]; th
634		AUDIOSRC="../SDL/audio_sdl.cpp"
635		fi
636
637	<	SYSSRCS="$VIDEOSRCS $EXTFSSRC $SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $EXTRASYSSRCS"
637	>	SYSSRCS="$VIDEOSRCS $EXTFSSRC $PREFSSRC $SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $EXTRASYSSRCS"
638
639		dnl Define a macro that translates a yesno-variable into a C macro definition
640		dnl to be put into the config.h file
641		dnl $1 -- the macro to define
642		dnl $2 -- the value to translate
643		dnl $3 -- template name
644	<	AC_DEFUN(AC_TRANSLATE_DEFINE, [
644	>	AC_DEFUN([AC_TRANSLATE_DEFINE], [
645		if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
646		AC_DEFINE($1, 1, $3)
647		fi
#	Line 1185 | Line 1283 | HAVE_GCC27=no
1283		AC_MSG_CHECKING(for GCC 2.7 or higher)
1284		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5)
1285		# error gcc < 2.7
1286	+	typedef syntax error;
1287		#endif
1288		]])],
1289		[AC_MSG_RESULT(yes); HAVE_GCC27=yes],
#	Line 1195 | Line 1294 | HAVE_GCC30=no
1294		AC_MSG_CHECKING(for GCC 3.0 or higher)
1295		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ >= 3)
1296		# error gcc < 3
1297	+	typedef syntax error;
1298		#endif
1299		]])],
1300		[AC_MSG_RESULT(yes); HAVE_GCC30=yes],
#	Line 1265 | Line 1365 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1365		../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
1366		../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
1367		../kpx_cpu/src/cpu/ppc/ppc-execute.cpp \
1368	<	../kpx_cpu/src/cpu/ppc/ppc-translate.cpp"
1368	>	../kpx_cpu/src/cpu/ppc/ppc-translate.cpp \
1369	>	../kpx_cpu/src/utils/utils-cpuinfo.cpp"
1370		CPPFLAGS="$CPPFLAGS -I../kpx_cpu/include -I../kpx_cpu/src"
1371
1372		dnl Enable JIT compiler, if possible
#	Line 1282 | Line 1383 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1383		i?86:elf)
1384		ac_cv_use_dyngen=yes
1385		;;
1386	+	mips:elf)
1387	+	ac_cv_use_dyngen=yes
1388	+	;;
1389		powerpc:mach)
1390		ac_cv_use_dyngen=yes
1391		;;
#	Line 1297 | Line 1401 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1401		if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_ICC" = "xno" ]]; then
1402		DYNGEN_CC=$CXX
1403		else
1404	<	for p in /usr/bin /usr/local/bin; do
1404	>	for p in /usr/bin /usr/local/bin /usr/freeware/bin; do
1405		gxx="$p/g++"
1406		if [[ -x "$gxx" ]]; then
1407		DYNGEN_CC="$gxx"
#	Line 1312 | Line 1416 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1416		if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
1417		case $host_cpu in
1418		i?86)
1419	<	DYNGEN_OP_FLAGS="-fomit-frame-pointer -mpreferred-stack-boundary=2"
1419	>	DYNGEN_OP_FLAGS="-fomit-frame-pointer"
1420	>	;;
1421	>	mips)
1422	>	DYNGEN_OP_FLAGS="-fno-delayed-branch -mno-abicalls"
1423		;;
1424		powerpc)
1425		if [[ "x$ac_cv_object_format" = "xmach" ]]; then
#	Line 1320 | Line 1427 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1427		fi
1428		;;
1429		esac
1430	<	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1431	<	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -falign-functions=0"
1430	>	have_dyngen_gcc3=no
1431	>	case "x`$DYNGEN_CC -dumpversion`" in
1432	>	x[12].*) ;;
1433	>	x*) have_dyngen_gcc3=yes ;;
1434	>	esac
1435	>	if [[ "x$have_dyngen_gcc3" = "xyes" ]]; then
1436	>	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-align-functions"
1437		else
1438		DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -malign-functions=0"
1439		fi
1440		DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -finline-functions -finline-limit=10000 -fno-exceptions -g0"
1441	<	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
1441	>	if [[ "x$have_dyngen_gcc3" = "xyes" ]]; then
1442		DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-reorder-blocks -fno-optimize-sibling-calls"
1443		fi
1444	+	if [[ "x$DYNGEN_CC" != "x$CXX" ]]; then
1445	+	DYNGEN_CFLAGS="-O2 $CFLAGS"
1446	+	DYNGEN_CXXFLAGS="-O2 $CXXFLAGS"
1447	+	else
1448	+	DYNGEN_CFLAGS="\$(CFLAGS)"
1449	+	DYNGEN_CXXFLAGS="\$(CXXFLAGS)"
1450	+	fi
1451		else
1452		WANT_JIT=no
1453		fi
#	Line 1340 | Line 1459 | if [[ "x$EMULATED_PPC" = "xyes" ]]; then
1459		CPUSRCS="\
1460		../kpx_cpu/src/cpu/jit/jit-cache.cpp \
1461		../kpx_cpu/src/cpu/jit/basic-dyngen.cpp \
1462	<	../kpx_cpu/src/cpu/ppc/ppc-dyngen.cpp $CPUSRCS"
1462	>	../kpx_cpu/src/cpu/ppc/ppc-dyngen.cpp \
1463	>	../kpx_cpu/src/cpu/ppc/ppc-jit.cpp $CPUSRCS"
1464		fi
1465		fi
1466		CPUSRCS="$CPUSRCS ../kpx_cpu/sheepshaver_glue.cpp"
1467		else
1468		WANT_JIT=no
1469		fi
1350	–	if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
1351	–	AC_CACHE_CHECK([whether static data regions are executable],
1352	–	ac_cv_have_static_data_exec, [
1353	–	AC_TRY_RUN([int main(void) {
1354	–	#if defined(__powerpc__) || defined(__ppc__)
1355	–	static unsigned int p[8] = {0x4e800020,};
1356	–	asm volatile("dcbst 0,%0" : : "r" (p) : "memory");
1357	–	asm volatile("sync" : : : "memory");
1358	–	asm volatile("icbi 0,%0" : : "r" (p) : "memory");
1359	–	asm volatile("sync" : : : "memory");
1360	–	asm volatile("isync" : : : "memory");
1361	–	((void (*)(void))p)();
1362	–	return 0;
1363	–	#endif
1364	–	return 1;
1365	–	}], ac_cv_have_static_data_exec=yes, ac_cv_have_static_data_exec=no,
1366	–	dnl When cross-compiling, do not assume anything.
1367	–	ac_cv_have_static_data_exec=no
1368	–	)
1369	–	])
1370	–	else
1371	–	ac_cv_use_dyngen=no
1372	–	fi
1373	–	AC_TRANSLATE_DEFINE(HAVE_STATIC_DATA_EXEC, "$ac_cv_have_static_data_exec",
1374	–	[Define if your system marks static data pages as executable.])
1375	–
1470		if [[ "x$WANT_JIT" = "xyes" ]]; then
1471		CPPFLAGS="$CPPFLAGS -DUSE_JIT"
1472		fi
1473
1474	+	dnl Higher level optimizations with MIPSPro compilers are possible
1475	+	if [[ "x$HAVE_IPA" = "xyes" ]]; then
1476	+	CFLAGS="`echo $CFLAGS | sed -e 's/-g//g'` -O3 -OPT:Olimit=0 -IPA"
1477	+	CXXFLAGS="`echo $CXXFLAGS | sed -e 's/-g//g'` -O3 -OPT:Olimit=0 -IPA"
1478	+	CXXFLAGS="-LANG:std $CXXFLAGS"
1479	+	LDFLAGS="$LDFLAGS -O3 -OPT:Olimit=0 -IPA"
1480	+	fi
1481	+
1482	+	dnl Check for linker script support
1483	+	case $target_os:$target_cpu in
1484	+	linux*:i?86)    LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
1485	+	linux*:x86_64)  LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-x86_64.ld";;
1486	+	linux*:powerpc) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-ppc.ld";;
1487	+	netbsd*:i?86)   LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
1488	+	freebsd*:i?86)  LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/freebsd-i386.ld";;
1489	+	darwin*:*)      LINKER_SCRIPT_FLAGS="-Wl,-seg1addr,0x78048000";;
1490	+	esac
1491	+	if [[ -n "$LINKER_SCRIPT_FLAGS" ]]; then
1492	+	AC_CACHE_CHECK([whether linker script is usable],
1493	+	ac_cv_linker_script_works, [
1494	+	AC_LANG_SAVE
1495	+	AC_LANG_CPLUSPLUS
1496	+	saved_LDFLAGS="$LDFLAGS"
1497	+	LDFLAGS="$LDFLAGS $LINKER_SCRIPT_FLAGS"
1498	+	AC_TRY_RUN(
1499	+	[int main() {if ((char *)&main < (char *)0x70000000) return 1;}],
1500	+	[ac_cv_linker_script_works=yes],
1501	+	[ac_cv_linker_script_works=no],
1502	+	dnl When cross-compiling, assume it works
1503	+	[ac_cv_linker_script_works="guessing yes"]
1504	+	)
1505	+	AC_LANG_RESTORE
1506	+	if [[ "$ac_cv_linker_script_works" = "no" ]]; then
1507	+	LDFLAGS="$saved_LDFLAGS"
1508	+	LINKER_SCRIPT_FLAGS=""
1509	+	fi
1510	+	])
1511	+	fi
1512	+	AC_TRANSLATE_DEFINE(HAVE_LINKER_SCRIPT, "$ac_cv_linker_script_works",
1513	+	[Define if there is a linker script to relocate the executable above 0x70000000.])
1514	+
1515		dnl Generate Makefile.
1516		AC_SUBST(PERL)
1517		AC_SUBST(USE_DYNGEN, [$ac_cv_use_dyngen])
1518		AC_SUBST(DYNGENSRCS)
1519		AC_SUBST(DYNGEN_CC)
1520	+	AC_SUBST(DYNGEN_CFLAGS)
1521	+	AC_SUBST(DYNGEN_CXXFLAGS)
1522		AC_SUBST(DYNGEN_OP_FLAGS)
1523		AC_SUBST(SYSSRCS)
1524		AC_SUBST(CPUSRCS)

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