3 # GMP config.guess wrapper.
6 # Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008 Free Software
9 # This file is part of the GNU MP Library.
11 # The GNU MP Library is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU Lesser General Public License as published
13 # by the Free Software Foundation; either version 3 of the License, or (at
14 # your option) any later version.
16 # The GNU MP Library is distributed in the hope that it will be useful, but
17 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
19 # License for more details.
21 # You should have received a copy of the GNU Lesser General Public License
22 # along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
27 # Print the host system CPU-VENDOR-OS.
29 # configfsf.guess is run and its guess then sharpened up to take advantage
30 # of the finer grained CPU types that GMP knows.
33 # Expect to find configfsf.guess in the same directory as this config.guess
34 configfsf_guess="`echo \"$0\" | sed 's/config.guess$/configfsf.guess/'`"
35 if test "$configfsf_guess" = "$0"; then
36 echo "Cannot derive configfsf.guess from $0" 1>&2
39 if test -f "$configfsf_guess"; then
42 echo "$configfsf_guess not found" 1>&2
46 # Setup a $SHELL with which to run configfsf.guess, using the same
47 # $CONFIG_SHELL or /bin/sh as autoconf does when running config.guess
48 SHELL=${CONFIG_SHELL-/bin/sh}
50 # Identify ourselves on --version, --help or errors
52 echo "(GNU MP wrapped config.guess)"
53 $SHELL $configfsf_guess "$@"
57 guess_full=`$SHELL $configfsf_guess`
62 guess_cpu=`echo "$guess_full" | sed 's/-.*$//'`
63 guess_rest=`echo "$guess_full" | sed 's/^[^-]*//'`
67 # -------------------------------------------------------------------------
68 # The following should look at the current guess and probe the system to
69 # establish a better guess in exact_cpu. Leave exact_cpu empty if probes
70 # can't be done, or don't work.
72 # When a number of probes are done, test -z "$exact_cpu" can be used instead
73 # of putting each probe under an "else" of the preceeding. That can stop
74 # the code getting horribly nested and marching off the right side of the
77 # Note that when a compile-and-link is done in one step we need to remove .o
78 # files, since lame C compilers generate these even when not asked.
82 trap 'rm -f $dummy.c $dummy.o $dummy.core $dummy ${dummy}1.s ${dummy}2.c ; exit 1' 1 2 15
84 # Use $HOST_CC if defined. $CC may point to a cross-compiler
85 if test x"$CC_FOR_BUILD" = x; then
86 if test x"$HOST_CC" != x; then
87 CC_FOR_BUILD="$HOST_CC"
89 if test x"$CC" != x; then
92 echo 'dummy(){}' >$dummy.c
93 for c in cc gcc c89 c99; do
94 ($c $dummy.c -c) >/dev/null 2>&1
96 CC_FOR_BUILD="$c"; break
99 rm -f $dummy.c $dummy.o
100 if test x"$CC_FOR_BUILD" = x; then
101 CC_FOR_BUILD=no_compiler_found
108 case "$guess_full" in
111 # configfsf.guess detects exact alpha cpu types for OSF and GNU/Linux, but
112 # not for *BSD and other systems. We try to get an exact type for any
113 # plain "alpha" it leaves.
115 # configfsf.guess used to have a block of code not unlike this, but these
116 # days does its thing with Linux kernel /proc/cpuinfo or OSF psrinfo.
121 .byte 37,100,45,37,120,10,0 # "%d-%x\n"
127 .frame \$30,16,\$26,0
130 .long 0x47e03d91 # implver \$17
132 .long 0x47e20c21 # amask \$2,\$1
141 $CC_FOR_BUILD $dummy.s -o $dummy 2>/dev/null
142 if test "$?" = 0 ; then
144 0-0) exact_cpu=alpha ;;
145 1-0) exact_cpu=alphaev5 ;;
146 1-1) exact_cpu=alphaev56 ;;
147 1-101) exact_cpu=alphapca56 ;;
148 2-303) exact_cpu=alphaev6 ;;
149 2-307) exact_cpu=alphaev67 ;;
150 2-1307) exact_cpu=alphaev68 ;;
153 rm -f $dummy.s $dummy.o $dummy
157 # CPUID[3] bits 24 to 31 is the processor family. itanium2 is documented
158 # as 0x1f, plain itanium has been seen returning 0x07 on two systems, but
159 # haven't found any documentation on it as such.
161 # Defining both getcpuid and _getcpuid lets us ignore whether the system
162 # expects underscores or not.
164 # "unsigned long long" is always 64 bits, in fact on hpux in ilp32 mode
165 # (which is the default there), it's the only 64-bit type.
167 cat >${dummy}a.s <<EOF
172 mov r8 = CPUID[r32] ;;
173 br.ret.sptk.many rp ;;
178 mov r8 = CPUID[r32] ;;
179 br.ret.sptk.many rp ;;
182 cat >${dummy}b.c <<EOF
184 unsigned long long getcpuid ();
188 if (getcpuid(0LL) == 0x49656E69756E6547LL && getcpuid(1LL) == 0x6C65746ELL)
191 switch ((getcpuid(3LL) >> 24) & 0xFF) {
192 case 0x07: puts ("itanium"); break;
193 case 0x1F: puts ("itanium2"); break; /* McKinley, Madison */
194 case 0x20: puts ("itanium2"); break; /* Montecito */
200 if $CC_FOR_BUILD ${dummy}a.s ${dummy}b.c -o $dummy >/dev/null 2>&1; then
203 rm -f ${dummy}a.s ${dummy}a.o ${dummy}b.c ${dummy}b.o $dummy $dummy.core core
207 # IRIX 6 and up always has a 64-bit mips cpu
212 # NetBSD (and presumably other *BSD) "sysctl hw.model" gives for example
213 # hw.model = Apple Macintosh Quadra 610 (68040)
214 exact_cpu=`(sysctl hw.model) 2>/dev/null | sed -n 's/^.*\(680[012346]0\).*$/m\1/p'`
215 if test -z "$exact_cpu"; then
216 # Linux kernel 2.2 gives for example "CPU: 68020" (tabs in between).
217 exact_cpu=`sed -n 's/^CPU:.*\(680[012346]0\).*$/m\1/p' /proc/cpuinfo 2>/dev/null`
219 if test -z "$exact_cpu"; then
220 # Try: movel #0,%d0; rts
221 # This is to check the compiler and our asm code works etc, before
222 # assuming failures below indicate cpu characteristics.
223 # .byte is used to avoid problems with assembler syntax variations.
224 # For testing, provoke failures by adding "illegal" possibly as
235 if ($CC_FOR_BUILD $dummy.s -o $dummy && ./$dummy) >/dev/null 2>&1; then
237 # $SHELL -c is used to execute ./$dummy below, since (./$dummy)
238 # 2>/dev/null still prints the SIGILL message on some shells.
249 .byte 0x4e, 0x74, 0x00, 0x00
251 if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
252 $SHELL -c ./$dummy >/dev/null 2>&1
253 if test $? != 0; then
254 exact_cpu=m68000 # because rtd didn't work
259 if test -z "$exact_cpu"; then
263 # Another possibility for identifying 68000 and 68010 is the
264 # different value stored by "movem a0,(a0)+"
275 if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
276 $SHELL -c ./$dummy >/dev/null 2>&1
277 if test $? != 0; then
278 exact_cpu=m68010 # because trapf didn't work
283 if test -z "$exact_cpu"; then
284 # Try: bfffo %d1{0:31},%d0
293 .byte 0xED, 0xC1, 0x00, 0x1F
297 if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
298 $SHELL -c ./$dummy >/dev/null 2>&1
299 if test $? != 0; then
300 exact_cpu=m68360 # cpu32, because bfffo didn't work
305 if test -z "$exact_cpu"; then
306 # FIXME: Now we know 68020 or up, but how to detect 030, 040 and 060?
310 rm -f $dummy.s $dummy.o $dummy $dummy.core core
312 if test -z "$exact_cpu"; then
313 case "$guess_full" in
314 *-*-next* | *-*-openstep*) # NeXTs are 68020 or better
322 # FreeBSD and OpenBSD are potentially narcy when we try to squeeze more
323 # information out of the CPU, so instead we use sysctl and parse the output.
324 # One hopes that someday this kludge will be unnecessary.
325 # As with the sparc tests, the use of a hardcoded path is necessary for sysctl.
327 # Example output: hw.model: Motorola PowerPC 7400
329 if test -z "$exact_cpu"; then
330 model=$(/sbin/sysctl hw.model|sed 's/.* \([[:digit:]].*$\)/\1/')
332 # These are the only powerpcs we're likely to see.
333 # 7400 or newer and we can use Altivec (theoretically).
334 60[134]|750|7400|745[05]|970) exact_cpu=powerpc$model ;;
335 # Then for prototype/testing powerpc chips that
336 # didn't really make it into the wild. We don't see
337 # these usually, but just in case...
338 630|860|74[45]7|7410) exact_cpu=powerpc$model ;;
339 *) exact_cpu=powerpc ;;
344 rs6000-*-* | powerpc*-*-*)
345 # Enhancement: On MacOS the "machine" command prints for instance
346 # "ppc750". Interestingly on powerpc970-apple-darwin6.8.5 it prints
347 # "ppc970" where there's no actual #define for 970 from NXGetLocalArchInfo
348 # (as noted below). But the man page says the command is still "under
349 # development", so it doesn't seem wise to use it just yet, not while
350 # there's an alternative.
352 # Try to read the PVR. mfpvr is a protected instruction, NetBSD, MacOS
353 # and AIX don't allow it in user mode, but the Linux kernel does.
355 # Using explicit bytes for mfpvr avoids worrying about assembler syntax
356 # and underscores. "char"s are used instead of "int"s to avoid worrying
357 # whether sizeof(int)==4 or if it's the right endianness.
359 # Note this is no good on AIX, since a C function there is the address of
360 # a function descriptor, not actual code. But this doesn't matter since
361 # AIX doesn't allow mfpvr anyway.
366 int n; /* force 4-byte alignment */
371 0x7c, 0x7f, 0x42, 0xa6, /* mfpvr r3 */
372 0x4e, 0x80, 0x00, 0x20, /* blr */
381 /* a separate "fun" variable is necessary for gcc 2.95.2 on MacOS,
382 it gets a compiler error on a combined cast and call */
383 fun = (unsigned (*)()) getpvr.a;
387 case 0x0001: puts ("powerpc601"); break;
388 case 0x0003: puts ("powerpc603"); break;
389 case 0x0004: puts ("powerpc604"); break;
390 case 0x0006: puts ("powerpc603e"); break;
391 case 0x0007: puts ("powerpc603e"); break; /* 603ev */
392 case 0x0008: puts ("powerpc750"); break;
393 case 0x0009: puts ("powerpc604e"); break;
394 case 0x000a: puts ("powerpc604e"); break; /* 604ev5 */
395 case 0x000c: puts ("powerpc7400"); break;
396 case 0x0041: puts ("powerpc630"); break;
397 case 0x0050: puts ("powerpc860"); break;
398 case 0x8000: puts ("powerpc7450"); break;
399 case 0x8001: puts ("powerpc7455"); break;
400 case 0x8002: puts ("powerpc7457"); break;
401 case 0x8003: puts ("powerpc7447"); break; /* really 7447A */
402 case 0x800c: puts ("powerpc7410"); break;
407 if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
408 # This style construct is needed on AIX 4.3 to suppress the SIGILL error
409 # from (*fun)(). Using $SHELL -c ./$dummy 2>/dev/null doesn't work.
410 { x=`./$dummy`; } 2>/dev/null
411 if test -n "$x"; then
415 rm -f $dummy.c $dummy.o $dummy $dummy.core
417 # Grep the linux kernel /proc/cpuinfo pseudo-file.
418 # Anything unrecognised is ignored, since of course we mustn't spit out
419 # a cpu type config.sub doesn't know.
420 if test -z "$exact_cpu" && test -f /proc/cpuinfo; then
421 x=`grep "^cpu[ ]" /proc/cpuinfo | head -n 1`
422 x=`echo $x | sed -n 's/^cpu[ ]*:[ ]*\([A-Za-z0-9]*\).*/\1/p'`
423 x=`echo $x | sed 's/PPC//'`
425 601) exact_cpu="power" ;;
426 603ev) exact_cpu="powerpc603e" ;;
427 604ev5) exact_cpu="powerpc604e" ;;
428 603 | 603e | 604 | 604e | 750 | 821 | 860 | 970)
429 exact_cpu="powerpc$x" ;;
431 exact_cpu=`echo $x | sed "s;POWER;power;"` ;;
435 if test -z "$exact_cpu"; then
436 # On AIX, try looking at _system_configuration. This is present in
437 # version 4 at least.
440 #include <sys/systemcfg.h>
444 switch (_system_configuration.implementation) {
445 /* Old versions of AIX don't have all these constants,
446 use ifdef for safety. */
448 case POWER_RS2: puts ("power2"); break;
451 case POWER_601: puts ("power"); break;
454 case POWER_603: puts ("powerpc603"); break;
457 case POWER_604: puts ("powerpc604"); break;
460 case POWER_620: puts ("powerpc620"); break;
463 case POWER_630: puts ("powerpc630"); break;
465 /* Dunno what this is, leave it out for now.
466 case POWER_A35: puts ("powerpca35"); break;
468 /* This is waiting for a bit more info.
469 case POWER_RS64II: puts ("powerpcrs64ii"); break;
472 if (_system_configuration.architecture == POWER_RS)
474 else if (_system_configuration.width == 64)
480 if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
482 if test -n "$x"; then
486 rm -f $dummy.c $dummy.o $dummy
489 if test -z "$exact_cpu"; then
490 # On MacOS X (or any Mach-O presumably), NXGetLocalArchInfo cpusubtype
491 # can tell us the exact cpu.
494 #include <mach-o/arch.h>
498 const NXArchInfo *a = NXGetLocalArchInfo();
499 if (a->cputype == CPU_TYPE_POWERPC)
501 switch (a->cpusubtype) {
502 /* The following known to Darwin 1.3. */
503 case CPU_SUBTYPE_POWERPC_601: puts ("powerpc601"); break;
504 case CPU_SUBTYPE_POWERPC_602: puts ("powerpc602"); break;
505 case CPU_SUBTYPE_POWERPC_603: puts ("powerpc603"); break;
506 case CPU_SUBTYPE_POWERPC_603e: puts ("powerpc603e"); break;
507 case CPU_SUBTYPE_POWERPC_603ev: puts ("powerpc603e"); break;
508 case CPU_SUBTYPE_POWERPC_604: puts ("powerpc604"); break;
509 case CPU_SUBTYPE_POWERPC_604e: puts ("powerpc604e"); break;
510 case CPU_SUBTYPE_POWERPC_620: puts ("powerpc620"); break;
511 case CPU_SUBTYPE_POWERPC_750: puts ("powerpc750"); break;
512 case CPU_SUBTYPE_POWERPC_7400: puts ("powerpc7400"); break;
513 case CPU_SUBTYPE_POWERPC_7450: puts ("powerpc7450"); break;
514 /* Darwin 6.8.5 doesn't define the following */
515 case 0x8001: puts ("powerpc7455"); break;
516 case 0x8002: puts ("powerpc7457"); break;
517 case 0x8003: puts ("powerpc7447"); break;
518 case 100: puts ("powerpc970"); break;
524 if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
526 if test -n "$x"; then
530 rm -f $dummy.c $dummy.o $dummy
534 sparc-*-* | sparc64-*-*)
535 # If we can recognise an actual v7 then $exact_cpu is set to "sparc" so as
536 # to short-circuit subsequent tests.
538 # Grep the linux kernel /proc/cpuinfo pseudo-file.
539 # A typical line is "cpu\t\t: TI UltraSparc II (BlackBird)"
540 # See arch/sparc/kernel/cpu.c and arch/sparc64/kernel/cpu.c.
542 if test -f /proc/cpuinfo; then
543 if grep 'cpu.*Cypress' /proc/cpuinfo >/dev/null; then
544 exact_cpu="sparc" # ie. v7
545 elif grep 'cpu.*Power-UP' /proc/cpuinfo >/dev/null; then
546 exact_cpu="sparc" # ie. v7
547 elif grep 'cpu.*HyperSparc' /proc/cpuinfo >/dev/null; then
549 elif grep 'cpu.*SuperSparc' /proc/cpuinfo >/dev/null; then
550 exact_cpu="supersparc"
551 elif grep 'cpu.*MicroSparc' /proc/cpuinfo >/dev/null; then
552 exact_cpu="microsparc"
553 elif grep 'cpu.*MB86904' /proc/cpuinfo >/dev/null; then
554 # actually MicroSPARC-II
556 elif grep 'cpu.*UltraSparc T1' /proc/cpuinfo >/dev/null; then
557 # this grep pattern has not been tested against any Linux
558 exact_cpu="ultrasparct1"
559 elif grep 'cpu.*UltraSparc III' /proc/cpuinfo >/dev/null; then
560 exact_cpu="ultrasparc3"
561 elif grep 'cpu.*UltraSparc IIi' /proc/cpuinfo >/dev/null; then
562 exact_cpu="ultrasparc2i"
563 elif grep 'cpu.*UltraSparc II' /proc/cpuinfo >/dev/null; then
564 exact_cpu="ultrasparc2"
565 elif grep 'cpu.*UltraSparc' /proc/cpuinfo >/dev/null; then
566 exact_cpu="ultrasparc"
570 # Grep the output from sysinfo on SunOS.
571 # sysinfo has been seen living in /bin or in /usr/kvm
572 # cpu0 is a "SuperSPARC Model 41 SPARCmodule" CPU
573 # cpu0 is a "75 MHz TI,TMS390Z55" CPU
575 if test -z "$exact_cpu"; then
576 for i in sysinfo /usr/kvm/sysinfo; do
577 if $SHELL -c $i 2>/dev/null >conftest.dat; then
578 if grep 'cpu0 is a "SuperSPARC' conftest.dat >/dev/null; then
581 elif grep 'cpu0 is a .*TMS390Z5.' conftest.dat >/dev/null; then
582 # TMS390Z50 and TMS390Z55
591 # Grep the output from prtconf on Solaris.
592 # Use an explicit /usr/sbin, since that directory might not be in a normal
595 # SUNW,UltraSPARC (driver not attached)
596 # SUNW,UltraSPARC-II (driver not attached)
597 # SUNW,UltraSPARC-IIi (driver not attached)
598 # SUNW,UltraSPARC-III+ (driver not attached)
599 # Ross,RT625 (driver not attached)
600 # TI,TMS390Z50 (driver not attached)
602 # /usr/sbin/sysdef prints similar information, but includes all loadable
603 # cpu modules, not just the real cpu.
605 # We first try a plain prtconf, since that is known to work on older systems.
606 # But for newer T1 systems, that doesn't produce any useful output, we need
607 # "prtconf -vp" there.
609 for prtconfopt in "" "-vp"; do
610 if test -z "$exact_cpu"; then
611 if $SHELL -c "/usr/sbin/prtconf $prtconfopt" 2>/dev/null >conftest.dat; then
612 if grep 'SUNW,UltraSPARC-T1' conftest.dat >/dev/null; then
613 exact_cpu=ultrasparct1
614 elif grep 'SUNW,UltraSPARC-III' conftest.dat >/dev/null; then
615 exact_cpu=ultrasparc3
616 elif grep 'SUNW,UltraSPARC-IIi' conftest.dat >/dev/null; then
617 exact_cpu=ultrasparc2i
618 elif grep 'SUNW,UltraSPARC-II' conftest.dat >/dev/null; then
619 exact_cpu=ultrasparc2
620 elif grep 'SUNW,UltraSPARC' conftest.dat >/dev/null; then
622 elif grep 'Ross,RT62.' conftest.dat >/dev/null; then
623 # RT620, RT625, RT626 hypersparcs (v8).
625 elif grep 'TI,TMS390Z5.' conftest.dat >/dev/null; then
626 # TMS390Z50 and TMS390Z55
628 elif grep 'TI,TMS390S10' conftest.dat >/dev/null; then
630 elif grep 'FMI,MB86904' conftest.dat >/dev/null; then
631 # actually MicroSPARC-II
639 # Grep the output from sysctl hw.model on sparc or sparc64 *BSD.
640 # Use an explicit /sbin, since that directory might not be in a normal
641 # user's path. Example outputs,
643 # hw.model: Sun Microsystems UltraSparc-IIi
645 if test -z "$exact_cpu"; then
646 if $SHELL -c "/sbin/sysctl hw.model" 2>/dev/null >conftest.dat; then
647 if grep 'UltraSparc-T1' conftest.dat >/dev/null; then
648 # this grep pattern has not been tested against any BSD
649 exact_cpu=ultrasparct1
650 elif grep 'UltraSparc-III' conftest.dat >/dev/null; then
651 exact_cpu=ultrasparc3
652 elif grep 'UltraSparc-IIi' conftest.dat >/dev/null; then
653 exact_cpu=ultrasparc2i
654 elif grep 'UltraSparc-II' conftest.dat >/dev/null; then
655 exact_cpu=ultrasparc2
656 elif grep 'UltraSparc' conftest.dat >/dev/null; then
658 elif grep 'TMS390Z5.' conftest.dat >/dev/null; then
659 # TMS390Z50 and TMS390Z55
661 elif grep 'TMS390S10' conftest.dat >/dev/null; then
663 elif grep 'MB86904' conftest.dat >/dev/null; then
664 # actually MicroSPARC-II
666 elif grep 'MB86907' conftest.dat >/dev/null; then
673 # sun4m and sun4d are v8s of some sort, sun4u is a v9 of some sort
675 if test -z "$exact_cpu"; then
677 sun4[md]) exact_cpu=sparcv8 ;;
678 sun4u) exact_cpu=sparcv9 ;;
683 i?86-*-* | amd64-*-* | x86_64-*-*)
684 cat <<EOF >${dummy}0.s
702 cat <<EOF >${dummy}1.s
717 cat <<EOF >${dummy}2.c
720 char vendor_string[13];
721 char dummy_string[12];
723 int family, model, stepping;
726 cpuid (vendor_string, 0);
727 vendor_string[12] = 0;
729 fms = cpuid (dummy_string, 1);
731 family = ((fms >> 8) & 0xf) + ((fms >> 20) & 0xff);
732 model = ((fms >> 4) & 0xf) + ((fms >> 12) & 0xf0);
733 stepping = fms & 0xf;
735 modelstr = "$guess_cpu";
736 if (strcmp (vendor_string, "GenuineIntel") == 0)
741 if (model <= 2) modelstr = "pentium";
742 else if (model >= 4) modelstr = "pentiummmx";
745 if (model <= 1) modelstr = "pentiumpro";
746 else if (model <= 6) modelstr = "pentium2";
747 else if (model <= 8) modelstr = "pentium3";
748 else if (model <= 9) modelstr = "pentiumm";
749 else if (model <= 12) modelstr = "pentium3";
750 else if (model <= 14) modelstr = "pentiumm";
751 else modelstr = "core2";
754 modelstr = "pentium4";
758 else if (strcmp (vendor_string, "AuthenticAMD") == 0)
763 if (model <= 3) modelstr = "k5";
764 else if (model <= 7) modelstr = "k6";
765 else if (model == 8) modelstr = "k62";
766 else if (model == 9) modelstr = "k63";
767 else if (model == 10) modelstr = "geode";
768 else if (model == 13) modelstr = "k63";
775 modelstr = "athlon64";
779 else if (strcmp (vendor_string, "CyrixInstead") == 0)
781 /* Should recognize Cyrix' processors too. */
783 else if (strcmp (vendor_string, "CentaurHauls") == 0)
788 if (model < 9) modelstr = "viac3";
789 else modelstr = "viac32";
794 printf ("%s\n", modelstr);
799 if ($CC_FOR_BUILD ${dummy}1.s ${dummy}2.c -o $dummy) >/dev/null 2>&1; then
800 # On 80386 and early 80486 cpuid is not available and will result in a
801 # SIGILL message, hence 2>/dev/null.
803 # On i386-unknown-freebsd4.9, "/bin/sh -c ./dummy" seems to send an
804 # "Illegal instruction (core dumped)" message to stdout, so we test $?
805 # to check if the program run was successful.
807 x=`$SHELL -c ./$dummy 2>/dev/null`
808 if test $? = 0 && test -n "$x"; then
813 if test -z "$exact_cpu"; then
814 if ($CC_FOR_BUILD ${dummy}0.s ${dummy}2.c -o $dummy) >/dev/null 2>&1; then
815 # On 80386 and early 80486 cpuid is not available and will result in a
816 # SIGILL message, hence 2>/dev/null.
818 # On i386-unknown-freebsd4.9, "/bin/sh -c ./dummy" seems to send an
819 # "Illegal instruction (core dumped)" message to stdout, so we test $?
820 # to check if the program run was successful.
822 x=`$SHELL -c ./$dummy 2>/dev/null`
823 if test $? = 0 && test -n "$x"; then
829 # We need to remove some .o files here since lame C compilers
830 # generate these even when not asked.
831 rm -f ${dummy}0.s ${dummy}0.o ${dummy}1.s ${dummy}1.o ${dummy}2.c ${dummy}2.o $dummy
838 # -------------------------------------------------------------------------
839 # Use an exact cpu, if possible
841 if test -n "$exact_cpu"; then
842 echo "$exact_cpu$guess_rest"