1 # Copyright
(C
) 1999, 2001, 2003, 2004, 2005 Free Software Foundation
, Inc.
3 # This
program is free software
; you can redistribute it and
/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation
; either version
2 of the License
, or
6 #
(at your option
) any later version.
8 # This
program is distributed in the hope that it will be useful
,
9 # but WITHOUT
ANY WARRANTY
; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License
for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this
program; if not
, write to the Free Software
15 # Foundation
, Inc.
, 51 Franklin Street
, Fifth Floor
, Boston
, MA
02110-1301, USA.
17 # Please email
any bugs
, comments
, and
/or additions to this file to
:
18 # gcc
-patches@gcc.gnu.org
20 # This file defines procs
for determining features supported by the target.
22 # Try to
compile some code and
return the messages printed by the compiler.
24 # BASENAME is a basename to use
for temporary files.
25 # TYPE is the type of compilation to perform
(see target_compile
).
26 # CONTENTS gives the contents of the input file.
27 # The rest is optional
:
28 # OPTIONS
: additional compiler options to use.
29 proc get_compiler_messages
{basename type contents
args} {
32 if { [llength $
args] > 0 } {
33 set options
"additional_flags=[lindex $args 0]"
38 set src $
{basename
}[pid
].c
40 assembly
{ set output $
{basename
}[pid
].s
}
41 object
{ set output $
{basename
}[pid
].o
}
46 set lines
[$
{tool
}_target_compile $src $output $type
"$options"]
48 remote_file build
delete $output
53 proc current_target_name
{ } {
55 if [info exists target_info
(target
,name)] {
56 set answer $target_info
(target
,name)
63 ###############################
64 # proc check_weak_available
{ }
65 ###############################
67 # weak symbols are only supported in some configs
/object formats
68 # this proc returns
1 if they
're supported, 0 if they're not
, or
-1 if unsure
70 proc check_weak_available
{ } {
74 # All mips targets should support it
76 if { [ string first
"mips" $target_cpu ] >= 0 } {
80 # All solaris2 targets should support it
82 if { [regexp
".*-solaris2.*" $target_triplet] } {
86 # DEC OSF
/1/Digital UNIX
/Tru64 UNIX supports it
88 if { [regexp
"alpha.*osf.*" $target_triplet] } {
92 # Windows targets Cygwin and MingW32 support it
94 if { [regexp
".*mingw32|.*cygwin" $target_triplet] } {
98 # HP
-UX
10.X doesn
't support it
100 if { [regexp "hppa.*hpux10" $target_triplet] } {
104 # ELF and ECOFF support it. a.out does with gas/gld but may also with
105 # other linkers, so we should try it
107 set objformat [gcc_target_object_format]
115 unknown { return -1 }
120 ###############################
121 # proc check_visibility_available { what_kind }
122 ###############################
124 # The visibility attribute is only support in some object formats
125 # This proc returns 1 if it is supported, 0 if not.
126 # The argument is the kind of visibility, default/protected/hidden/internal.
128 proc check_visibility_available { what_kind } {
129 global visibility_available_saved
131 global target_triplet
133 # On NetWare, support makes no sense.
134 if { [string match "*-*-netware*" $target_triplet] } {
138 if [string match "" $what_kind] { set what_kind "hidden" }
140 if { [info exists visibility_available_saved] } {
141 verbose "Saved result is <$visibility_available_saved>" 1
142 if { [ lsearch -exact $visibility_available_saved $what_kind ] != -1 } {
144 } elseif { [ lsearch -exact $visibility_available_saved "!$what_kind" ] != -1 } {
149 set lines [get_compiler_messages visibility object "
150 void f() __attribute__((visibility(\"$what_kind\")));
153 if [string match "" $lines] then {
155 lappend visibility_available_saved $what_kind
158 lappend visibility_available_saved "!$what_kind"
163 ###############################
164 # proc check_alias_available { }
165 ###############################
167 # Determine if the target toolchain supports the alias attribute.
169 # Returns 2 if the target supports aliases. Returns 1 if the target
170 # only supports weak aliased. Returns 0 if the target does not
171 # support aliases at all. Returns -1 if support for aliases could not
174 proc check_alias_available { } {
175 global alias_available_saved
178 if [info exists alias_available_saved] {
179 verbose "check_alias_available returning saved $alias_available_saved" 2
183 verbose "check_alias_available compiling testfile $src" 2
184 set f [open $src "w"]
185 # Compile a small test program. The definition of "g" is
186 # necessary to keep the Solaris assembler from complaining
188 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
189 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
191 set lines [${tool}_target_compile $src $obj object ""]
193 remote_file build delete $obj
195 if [string match "" $lines] then {
196 # No error messages, everything is OK.
197 set alias_available_saved 2
199 if [regexp "alias definitions not supported" $lines] {
200 verbose "check_alias_available target does not support aliases" 2
202 set objformat [gcc_target_object_format]
204 if { $objformat == "elf" } {
205 verbose "check_alias_available but target uses ELF format, so it ought to" 2
206 set alias_available_saved -1
208 set alias_available_saved 0
211 if [regexp "only weak aliases are supported" $lines] {
212 verbose "check_alias_available target supports only weak aliases" 2
213 set alias_available_saved 1
215 set alias_available_saved -1
220 verbose "check_alias_available returning $alias_available_saved" 2
223 return $alias_available_saved
226 # Returns true if --gc-sections is supported on the target.
228 proc check_gc_sections_available { } {
229 global gc_sections_available_saved
232 if {![info exists gc_sections_available_saved]} {
233 # Some targets don't support gc
-sections despite whatever
's
234 # advertised by ld's options.
235 if { [istarget alpha
*-*-*]
236 ||
[istarget ia64
-*-*] } {
237 set gc_sections_available_saved
0
241 # Check
if the
ld used by gcc supports
--gc
-sections.
242 set gcc_spec
[$
{tool
}_target_compile
"-dumpspecs" "" "none" ""]
243 regsub
".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
244 set gcc_ld
[lindex
[$
{tool
}_target_compile
"-print-prog-name=$linker" "" "none" ""] 0]
245 set ld_output
[remote_exec host
"$gcc_ld" "--help"]
246 if { [ string first
"--gc-sections" $ld_output ] >= 0 } {
247 set gc_sections_available_saved
1
249 set gc_sections_available_saved
0
252 return $gc_sections_available_saved
255 #
Return true
if profiling is supported
on the target.
257 proc check_profiling_available
{ test_what
} {
258 global profiling_available_saved
260 verbose
"Profiling argument is <$test_what>" 1
262 # These conditions depend
on the
argument so examine them before
263 # looking at the
cache variable.
265 # Support
for -p
on solaris2 relies
on mcrt1.o which comes with the
266 # vendor compiler. We cannot reliably predict the directory where the
267 # vendor compiler
(and thus mcrt1.o
) is installed so we can
't
268 # necessarily find mcrt1.o even if we have it.
269 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
273 # Support for -p on irix relies on libprof1.a which doesn't appear to
274 # exist
on any irix6
system currently posting testsuite results.
275 # Support
for -pg
on irix relies
on gcrt1.o which doesn
't exist yet.
276 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
277 if { [istarget mips*-*-irix*]
278 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
282 # Now examine the cache variable.
283 if {![info exists profiling_available_saved]} {
284 # Some targets don't have
any implementation of __bb_init_func or are
285 # missing other needed machinery.
286 if { [istarget mmix
-*-*]
287 ||
[istarget arm
*-*-eabi
*]
288 ||
[istarget arm
*-*-elf
]
289 ||
[istarget arm
*-*-symbianelf
*]
290 ||
[istarget powerpc
-*-eabi
*]
291 ||
[istarget strongarm
*-*-elf
]
292 ||
[istarget xscale
*-*-elf
]
293 ||
[istarget cris
-*-*]
294 ||
[istarget h8300
-*-*]
295 ||
[istarget mips
*-*-elf
]
296 ||
[istarget xtensa
-*-elf
]
297 ||
[istarget
*-*-windiss
] } {
298 set profiling_available_saved
0
300 set profiling_available_saved
1
304 return $profiling_available_saved
307 #
Return 1 if target has packed layout of structure members by
308 # default
, 0 otherwise. Note that this is slightly different than
309 # whether the target has
"natural alignment": both attributes may be
312 proc check_effective_target_default_packed
{ } {
313 global et_default_packed_saved
314 global et_default_packed_target_name
316 if { ![info exists et_default_packed_target_name
] } {
317 set et_default_packed_target_name
""
320 #
If the target has changed since we
set the cached value
, clear it.
321 set current_target
[current_target_name
]
322 if { $current_target
!= $et_default_packed_target_name
} {
323 verbose
"check_effective_target_default_packed: `$et_default_packed_target_name'" 2
324 set et_default_packed_target_name $current_target
325 if [info exists et_default_packed_saved
] {
326 verbose
"check_effective_target_default_packed: removing cached result" 2
327 unset et_default_packed_saved
331 if [info exists et_default_packed_saved
] {
332 verbose
"check_effective_target_default_packed: using cached result" 2
334 verbose
"check_effective_target_default_packed: compiling source" 2
336 set et_default_packed_saved \
337 [string match
"" [get_compiler_messages default_packed assembly {
338 struct x
{ char a
; long b
; } c
;
339 int s
[sizeof
(c
) == sizeof
(char
) + sizeof
(long
) ?
1 : -1];
343 verbose
"check_effective_target_default_packed: returning $et_default_packed_saved" 2
344 return $et_default_packed_saved
347 #
Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
348 # documentation
, where the test also comes from.
350 proc check_effective_target_pcc_bitfield_type_matters
{ } {
351 global et_pcc_bitfield_type_matters_saved
352 global et_pcc_bitfield_type_matters_target_name
354 if { ![info exists et_pcc_bitfield_type_matters_target_name
] } {
355 set et_pcc_bitfield_type_matters_target_name
""
358 #
If the target has changed since we
set the cached value
, clear it.
359 set current_target
[current_target_name
]
360 if { $current_target
!= $et_pcc_bitfield_type_matters_target_name
} {
361 verbose
"check_effective_target_pcc_bitfield_type_matters: `$et_pcc_bitfield_type_matters_target_name'" 2
362 set et_pcc_bitfield_type_matters_target_name $current_target
363 if [info exists et_pcc_bitfield_type_matters_saved
] {
364 verbose
"check_effective_target_pcc_bitfield_type_matters: removing cached result" 2
365 unset et_pcc_bitfield_type_matters_saved
369 if [info exists et_pcc_bitfield_type_matters_saved
] {
370 verbose
"check_effective_target_pcc_bitfield_type_matters: using cached result" 2
372 verbose
"check_effective_target_pcc_bitfield_type_matters: compiling source" 2
374 # PCC_BITFIELD_TYPE_MATTERS isn
't just about unnamed or empty
375 # bitfields, but let's stick to the example code from the docs.
376 set et_pcc_bitfield_type_matters_saved \
377 [string match
"" [get_compiler_messages pcc_bitfield_type_matters assembly {
378 struct foo1
{ char x
; char
:0; char y
; };
379 struct foo2
{ char x
; int :0; char y
; };
380 int s
[sizeof
(struct foo1
) != sizeof
(struct foo2
) ?
1 : -1];
383 verbose
"check_effective_target_pcc_bitfield_type_matters: returning $et_pcc_bitfield_type_matters_saved" 2
384 return $et_pcc_bitfield_type_matters_saved
387 #
Return 1 if thread local storage
(TLS
) is supported
, 0 otherwise.
389 # This won
't change for different subtargets so cache the result.
391 proc check_effective_target_tls {} {
394 if [info exists et_tls_saved] {
395 verbose "check_effective_target_tls: using cached result" 2
401 verbose "check_effective_target_tls: compiling testfile $src" 2
402 set f [open $src "w"]
403 # Compile a small test program.
404 puts $f "__thread int i;\n"
407 # Test for thread-local data supported by the platform.
409 [target_compile $src $asm assembly ""]
411 if { [string match "*not supported*" $comp_output] } {
414 remove-build-file $asm
416 verbose "check_effective_target_tls: returning $et_tls_saved" 2
420 # Return 1 if TLS executables can run correctly, 0 otherwise.
422 # This won't change
for different subtargets so
cache the result.
424 proc check_effective_target_tls_runtime
{} {
425 global et_tls_runtime_saved
427 if [info exists et_tls_runtime_saved
] {
428 verbose
"check_effective_target_tls_runtime: using cached result" 2
430 set et_tls_runtime_saved
0
432 set src tls_runtime
[pid
].c
433 set exe tls_runtime
[pid
].x
434 verbose
"check_effective_target_tls_runtime: compiling testfile $src" 2
435 set f
[open $src
"w"]
436 #
Compile a small test
program.
437 puts $f
"__thread int thr = 0;\n"
438 puts $f
"int main(void)\n {\n return thr;\n}"
442 [target_compile $src $exe executable
""]
445 if [string match
"" $comp_output] then {
446 # No error messages
, everything is OK.
448 set result
[remote_load target
"./$exe" "" ""]
449 set status [lindex $result
0]
450 remote_file build
delete $exe
452 verbose
"check_effective_target_tls_runtime status is <$status>" 2
454 if { $
status == "pass" } {
455 set et_tls_runtime_saved
1
458 verbose
"check_effective_target_tls_runtime: returning $et_tls_runtime_saved" 2
462 return $et_tls_runtime_saved
465 #
Return 1 if -fpic and
-fPIC are supported
, as in no warnings or errors
466 # emitted
, 0 otherwise. Whether a shared library can actually be built is
467 # out of scope
for this test.
469 # When the target
name changes
, replace the cached result.
471 proc check_effective_target_fpic
{ } {
473 global et_fpic_target_name
475 if { ![info exists et_fpic_target_name
] } {
476 set et_fpic_target_name
""
479 #
If the target has changed since we
set the cached value
, clear it.
480 set current_target
[current_target_name
]
481 if { $current_target
!= $et_fpic_target_name
} {
482 verbose
"check_effective_target_fpic: `$et_fpic_target_name'" 2
483 set et_fpic_target_name $current_target
484 if [info exists et_fpic_saved
] {
485 verbose
"check_effective_target_fpic: removing cached result" 2
490 if [info exists et_fpic_saved
] {
491 verbose
"check_effective_target_fpic: using cached result" 2
493 verbose
"check_effective_target_fpic: compiling source" 2
495 # Note that M68K has a multilib that supports
-fpic but not
496 #
-fPIC
, so we need to check both. We test with a
program that
497 # requires GOT references.
498 set et_fpic_saved
[string match
"" [get_compiler_messages fpic object {
499 extern
int foo
(void
); extern
int bar
;
500 int baz
(void
) { return foo
() + bar
; }
503 if { $et_fpic_saved
!= 0 } {
504 set et_fpic_saved
[string match
"" [get_compiler_messages fpic object {
505 extern
int foo
(void
); extern
int bar
;
506 int baz
(void
) { return foo
() + bar
; }
510 verbose
"check_effective_target_fpic: returning $et_fpic_saved" 2
511 return $et_fpic_saved
514 #
Return true
if iconv is supported
on the target. In particular IBM1047.
516 proc check_iconv_available
{ test_what
} {
524 verbose
"check_iconv_available compiling testfile $src" 2
525 set f
[open $src
"w"]
526 #
Compile a small test
program.
527 puts $f
"#include <iconv.h>\n"
528 puts $f
"int main (void)\n {\n iconv_t cd; \n"
529 puts $f
"cd = iconv_open (\"[lindex $test_what 1]\", \"UTF-8\");\n"
530 puts $f
"if (cd == (iconv_t) -1)\n return 1;\n"
531 puts $f
"return 0;\n}"
534 #
If the tool configuration file has not
set libiconv
, try
"-liconv"
535 if { ![info exists libiconv
] } {
536 set libiconv
"-liconv"
538 set lines
[$
{tool
}_target_compile $src $exe executable
"libs=$libiconv" ]
541 if [string match
"" $lines] then {
542 # No error messages
, everything is OK.
544 set result
[$
{tool
}_load
"./$exe" "" ""]
545 set status [lindex $result
0]
546 remote_file build
delete $exe
548 verbose
"check_iconv_available status is <$status>" 2
550 if { $
status == "pass" } then {
558 #
Return true
if named sections are supported
on this target.
559 # This proc does not
cache results
, because the answer may vary
560 # when cycling over subtarget options
(e.g. irix o32
/n32
/n64
) in
562 proc check_named_sections_available
{ } {
563 verbose
"check_named_sections_available: compiling source" 2
564 set answer
[string match
"" [get_compiler_messages named object {
565 int __attribute__
((section
("whatever"))) foo;
567 verbose
"check_named_sections_available: returning $answer" 2
571 #
Return 1 if the target supports Fortran real kinds larger than real
(8),
574 # When the target
name changes
, replace the cached result.
576 proc check_effective_target_fortran_large_real
{ } {
577 global et_fortran_large_real_saved
578 global et_fortran_large_real_target_name
581 if { ![info exists et_fortran_large_real_target_name
] } {
582 set et_fortran_large_real_target_name
""
585 #
If the target has changed since we
set the cached value
, clear it.
586 set current_target
[current_target_name
]
587 if { $current_target
!= $et_fortran_large_real_target_name
} {
588 verbose
"check_effective_target_fortran_large_real: `$et_fortran_large_real_target_name' `$current_target'" 2
589 set et_fortran_large_real_target_name $current_target
590 if [info exists et_fortran_large_real_saved
] {
591 verbose
"check_effective_target_fortran_large_real: removing cached result" 2
592 unset et_fortran_large_real_saved
596 if [info exists et_fortran_large_real_saved
] {
597 verbose
"check_effective_target_fortran_large_real returning saved $et_fortran_large_real_saved" 2
599 set et_fortran_large_real_saved
0
601 #
Set up
, compile, and
execute a test
program using large real
602 # kinds.
Include the current process ID in the file names to
603 # prevent conflicts with invocations
for multiple testsuites.
604 set src real
[pid
].f90
607 set f
[open $src
"w"]
608 puts $f
"integer,parameter :: k = &"
609 puts $f
" selected_real_kind (precision (0.0_8) + 1)"
610 puts $f
"real(kind=k) :: x"
611 puts $f
"x = cos (x);"
615 verbose
"check_effective_target_fortran_large_real compiling testfile $src" 2
616 set lines
[$
{tool
}_target_compile $src $exe executable
""]
619 if [string match
"" $lines] then {
620 # No error message
, compilation succeeded.
621 set et_fortran_large_real_saved
1
625 return $et_fortran_large_real_saved
628 #
Return 1 if the target supports Fortran
integer kinds larger than
629 #
integer(8), 0 otherwise.
631 # When the target
name changes
, replace the cached result.
633 proc check_effective_target_fortran_large_int
{ } {
634 global et_fortran_large_int_saved
635 global et_fortran_large_int_target_name
638 if { ![info exists et_fortran_large_int_target_name
] } {
639 set et_fortran_large_int_target_name
""
642 #
If the target has changed since we
set the cached value
, clear it.
643 set current_target
[current_target_name
]
644 if { $current_target
!= $et_fortran_large_int_target_name
} {
645 verbose
"check_effective_target_fortran_large_int: `$et_fortran_large_int_target_name' `$current_target'" 2
646 set et_fortran_large_int_target_name $current_target
647 if [info exists et_fortran_large_int_saved
] {
648 verbose
"check_effective_target_fortran_large_int: removing cached result" 2
649 unset et_fortran_large_int_saved
653 if [info exists et_fortran_large_int_saved
] {
654 verbose
"check_effective_target_fortran_large_int returning saved $et_fortran_large_int_saved" 2
656 set et_fortran_large_int_saved
0
658 #
Set up
, compile, and
execute a test
program using large
integer
659 # kinds.
Include the current process ID in the file names to
660 # prevent conflicts with invocations
for multiple testsuites.
664 set f
[open $src
"w"]
665 puts $f
"integer,parameter :: k = &"
666 puts $f
" selected_int_kind (range (0_8) + 1)"
667 puts $f
"integer(kind=k) :: i"
671 verbose
"check_effective_target_fortran_large_int compiling testfile $src" 2
672 set lines
[$
{tool
}_target_compile $src $exe executable
""]
675 if [string match
"" $lines] then {
676 # No error message
, compilation succeeded.
677 set et_fortran_large_int_saved
1
681 return $et_fortran_large_int_saved
684 #
Return 1 if we can statically link libgfortran
, 0 otherwise.
686 # When the target
name changes
, replace the cached result.
688 proc check_effective_target_static_libgfortran
{ } {
689 global et_static_libgfortran
690 global et_static_libgfortran_target_name
693 if { ![info exists et_static_libgfortran_target_name
] } {
694 set et_static_libgfortran_target_name
""
697 #
If the target has changed since we
set the cached value
, clear it.
698 set current_target
[current_target_name
]
699 if { $current_target
!= $et_static_libgfortran_target_name
} {
700 verbose
"check_effective_target_static_libgfortran: `$et_static_libgfortran_target_name' `$current_target'" 2
701 set et_static_libgfortran_target_name $current_target
702 if [info exists et_static_libgfortran_saved
] {
703 verbose
"check_effective_target_static_libgfortran: removing cached result" 2
704 unset et_static_libgfortran_saved
708 if [info exists et_static_libgfortran_saved
] {
709 verbose
"check_effective_target_static_libgfortran returning saved $et_static_libgfortran_saved" 2
711 set et_static_libgfortran_saved
0
713 #
Set up
, compile, and
execute a test
program using static linking.
714 #
Include the current process ID in the file names to prevent
715 # conflicts with invocations
for multiple testsuites.
716 set opts
"additional_flags=-static"
717 set src static
[pid
].f
718 set exe static
[pid
].x
720 set f
[open $src
"w"]
721 puts $f
" print *, 'test'"
725 verbose
"check_effective_target_static_libgfortran compiling testfile $src" 2
726 set lines
[$
{tool
}_target_compile $src $exe executable
"$opts"]
729 if [string match
"" $lines] then {
730 # No error message
, compilation succeeded.
731 set et_static_libgfortran_saved
1
735 return $et_static_libgfortran_saved
738 #
Return 1 if the target supports executing AltiVec instructions
, 0
739 # otherwise.
Cache the result.
741 proc check_vmx_hw_available
{ } {
742 global vmx_hw_available_saved
745 if [info exists vmx_hw_available_saved
] {
746 verbose
"check_hw_available returning saved $vmx_hw_available_saved" 2
748 set vmx_hw_available_saved
0
750 # Some simulators are known to not support VMX instructions.
751 if { [istarget powerpc
-*-eabi
] ||
[istarget powerpc
*-*-eabispe
] } {
752 verbose
"check_hw_available returning 0" 2
753 return $vmx_hw_available_saved
756 #
Set up
, compile, and
execute a test
program containing VMX
757 # instructions.
Include the current process ID in the file
758 # names to prevent conflicts with invocations
for multiple
763 set f
[open $src
"w"]
764 puts $f
"int main() {"
765 puts $f
"#ifdef __MACH__"
766 puts $f
" asm volatile (\"vor v0,v0,v0\");"
768 puts $f
" asm volatile (\"vor 0,0,0\");"
770 puts $f
" return 0; }"
773 # Most targets don
't require special flags for this test case, but
775 if [istarget *-*-darwin*] {
776 set opts "additional_flags=-maltivec"
781 verbose "check_vmx_hw_available compiling testfile $src" 2
782 set lines [${tool}_target_compile $src $exe executable "$opts"]
785 if [string match "" $lines] then {
786 # No error message, compilation succeeded.
787 set result [${tool}_load "./$exe" "" ""]
788 set status [lindex $result 0]
789 remote_file build delete $exe
790 verbose "check_vmx_hw_available testfile status is <$status>" 2
792 if { $status == "pass" } then {
793 set vmx_hw_available_saved 1
796 verbose "check_vmx_hw_availalble testfile compilation failed" 2
800 return $vmx_hw_available_saved
803 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
804 # complex float arguments. This affects gfortran tests that call cabsf
805 # in libm built by an earlier compiler. Return 1 if libm uses the same
806 # argument passing as the compiler under test, 0 otherwise.
808 # When the target name changes, replace the cached result.
810 proc check_effective_target_broken_cplxf_arg { } {
811 global et_broken_cplxf_arg_saved
812 global et_broken_cplxf_arg_target_name
815 # Skip the work for targets known not to be affected.
816 if { ![istarget powerpc64-*-linux*] } {
818 } elseif { [is-effective-target ilp32] } {
822 if { ![info exists et_broken_cplxf_arg_target_name] } {
823 set et_broken_cplxf_arg_target_name ""
826 # If the target has changed since we set the cached value, clear it.
827 set current_target [current_target_name]
828 if { $current_target != $et_broken_cplxf_arg_target_name } {
829 verbose "check_effective_target_broken_cplxf_arg: `$et_broken_cplxf_arg_target_name'" 2
830 set et_broken_cplxf_arg_target_name $current_target
831 if [info exists et_broken_cplxf_arg_saved
] {
832 verbose
"check_effective_target_broken_cplxf_arg: removing cached result" 2
833 unset et_broken_cplxf_arg_saved
837 if [info exists et_broken_cplxf_arg_saved
] {
838 verbose
"check_effective_target_broken_cplxf_arg: using cached result" 2
840 set et_broken_cplxf_arg_saved
0
841 # This is only known to affect one target.
842 if { ![istarget powerpc64
-*-linux
*] ||
![is
-effective
-target lp64
] } {
843 set et_broken_cplxf_arg_saved
0
844 verbose
"check_effective_target_broken_cplxf_arg: caching 0" 2
845 return $et_broken_cplxf_arg_saved
848 #
Set up
, compile, and
execute a C test
program that calls cabsf.
852 set f
[open $src
"w"]
853 puts $f
"#include <complex.h>"
854 puts $f
"extern void abort (void);"
855 puts $f
"float fabsf (float);"
856 puts $f
"float cabsf (_Complex float);"
857 puts $f
"int main ()"
859 puts $f
" _Complex float cf;"
861 puts $f
" cf = 3 + 4.0fi;"
862 puts $f
" f = cabsf (cf);"
863 puts $f
" if (fabsf (f - 5.0) > 0.0001) abort ();"
868 set lines
[$
{tool
}_target_compile $src $exe executable
"-lm"]
871 if [string match
"" $lines] {
872 # No error message
, compilation succeeded.
873 set result
[$
{tool
}_load
"./$exe" "" ""]
874 set status [lindex $result
0]
875 remote_file build
delete $exe
877 verbose
"check_effective_target_broken_cplxf_arg: status is <$status>" 2
879 if { $
status != "pass" } {
880 set et_broken_cplxf_arg_saved
1
883 verbose
"check_effective_target_broken_cplxf_arg: compilation failed" 2
886 return $et_broken_cplxf_arg_saved
889 proc check_alpha_max_hw_available
{ } {
890 global alpha_max_hw_available_saved
893 if [info exists alpha_max_hw_available_saved
] {
894 verbose
"check_alpha_max_hw_available returning saved $alpha_max_hw_available_saved" 2
896 set alpha_max_hw_available_saved
0
898 #
Set up
, compile, and
execute a test
program probing bit
8 of the
899 # architecture mask
, which indicates presence of
MAX instructions.
903 set f
[open $src
"w"]
904 puts $f
"int main() { return __builtin_alpha_amask(1<<8) != 0; }"
907 verbose
"check_alpha_max_hw_available compiling testfile $src" 2
908 set lines
[$
{tool
}_target_compile $src $exe executable
""]
911 if [string match
"" $lines] then {
912 # No error message
, compilation succeeded.
913 set result
[$
{tool
}_load
"./$exe" "" ""]
914 set status [lindex $result
0]
915 remote_file build
delete $exe
916 verbose
"check_alpha_max_hw_available testfile status is <$status>" 2
918 if { $
status == "pass" } then {
919 set alpha_max_hw_available_saved
1
922 verbose
"check_alpha_max_hw_availalble testfile compilation failed" 2
926 return $alpha_max_hw_available_saved
929 # Returns true iff the FUNCTION is available
on the target
system.
930 #
(This is essentially a Tcl implementation of Autoconf
's
933 proc check_function_available { function } {
934 set var "${function}_available_saved"
938 if {![info exists $var]} {
941 # Check to make sure.
942 set src "function[pid].c"
943 set exe "function[pid].exe"
945 set f [open $src "w"]
946 puts $f "int main () { $function (); }"
949 set lines [${tool}_target_compile $src $exe executable ""]
953 if {![string match "" $lines]} then {
955 verbose -log "$function is not available"
957 verbose -log "$function is available"
964 # Returns true iff "fork" is available on the target system.
966 proc check_fork_available {} {
967 return [check_function_available "fork"]
970 # Returns true iff "mkfifo" is available on the target system.
972 proc check_mkfifo_available {} {
973 if {[istarget *-*-cygwin*]} {
974 # Cygwin has mkfifo, but support is incomplete.
978 return [check_function_available "mkfifo"]
981 # Return 1 if we're generating
32-bit code using default options
, 0
984 # When the target
name changes
, replace the cached result.
986 proc check_effective_target_ilp32
{ } {
987 global et_ilp32_saved
988 global et_ilp32_target_name
990 if { ![info exists et_ilp32_target_name
] } {
991 set et_ilp32_target_name
""
994 #
If the target has changed since we
set the cached value
, clear it.
995 set current_target
[current_target_name
]
996 if { $current_target
!= $et_ilp32_target_name
} {
997 verbose
"check_effective_target_ilp32: `$et_ilp32_target_name' `$current_target'" 2
998 set et_ilp32_target_name $current_target
999 if { [info exists et_ilp32_saved
] } {
1000 verbose
"check_effective_target_ilp32: removing cached result" 2
1001 unset et_ilp32_saved
1005 if [info exists et_ilp32_saved
] {
1006 verbose
"check-effective_target_ilp32: using cached result" 2
1008 verbose
"check_effective_target_ilp32: compiling source" 2
1009 set et_ilp32_saved
[string match
"" [get_compiler_messages ilp32 object {
1010 int dummy
[(sizeof
(int) == 4 && sizeof
(void
*) == 4 && sizeof
(long
) == 4 ) ?
1 : -1];
1013 verbose
"check_effective_target_ilp32: returning $et_ilp32_saved" 2
1014 return $et_ilp32_saved
1017 #
Return 1 if we
're generating 64-bit code using default options, 0
1020 # When the target name changes, replace the cached result.
1022 proc check_effective_target_lp64 { } {
1023 global et_lp64_saved
1024 global et_lp64_target_name
1026 if { ![info exists et_lp64_target_name] } {
1027 set et_lp64_target_name ""
1030 # If the target has changed since we set the cached value, clear it.
1031 set current_target [current_target_name]
1032 if { $current_target != $et_lp64_target_name } {
1033 verbose "check_effective_target_lp64: `$et_lp64_target_name' `$current_target
'" 2
1034 set et_lp64_target_name $current_target
1035 if [info exists et_lp64_saved] {
1036 verbose "check_effective_target_lp64: removing cached result" 2
1041 if [info exists et_lp64_saved] {
1042 verbose "check_effective_target_lp64: using cached result" 2
1044 verbose "check_effective_target_lp64: compiling source" 2
1045 set et_lp64_saved [string match "" [get_compiler_messages lp64 object {
1046 int dummy[(sizeof (int) == 4 && sizeof (void *) == 8 && sizeof (long) == 8 ) ? 1 : -1];
1049 verbose "check_effective_target_lp64: returning $et_lp64_saved" 2
1050 return $et_lp64_saved
1053 # Return 1 if the target needs a command line argument to enable a SIMD
1056 # This won't change
for different subtargets so
cache the result.
1058 proc check_effective_target_vect_cmdline_needed
{ } {
1059 global et_vect_cmdline_needed_saved
1061 if [info exists et_vect_cmdline_needed_saved
] {
1062 verbose
"check_effective_target_vect_cmdline_needed: using cached result" 2
1064 set et_vect_cmdline_needed_saved
1
1065 if { [istarget ia64
-*-*]
1066 ||
[istarget x86_64
-*-*] } {
1067 set et_vect_cmdline_needed_saved
0
1071 verbose
"check_effective_target_vect_cmdline_needed: returning $et_vect_cmdline_needed_saved" 2
1072 return $et_vect_cmdline_needed_saved
1075 #
Return 1 if the target supports hardware vectors of
int, 0 otherwise.
1077 # This won
't change for different subtargets so cache the result.
1079 proc check_effective_target_vect_int { } {
1080 global et_vect_int_saved
1082 if [info exists et_vect_int_saved] {
1083 verbose "check_effective_target_vect_int: using cached result" 2
1085 set et_vect_int_saved 0
1086 if { [istarget i?86-*-*]
1087 || [istarget powerpc*-*-*]
1088 || [istarget x86_64-*-*]
1089 || [istarget sparc*-*-*]
1090 || [istarget alpha*-*-*]
1091 || [istarget ia64-*-*] } {
1092 set et_vect_int_saved 1
1096 verbose "check_effective_target_vect_int: returning $et_vect_int_saved" 2
1097 return $et_vect_int_saved
1100 # Return 1 is this is an arm target using 32-bit instructions
1101 proc check_effective_target_arm32 { } {
1102 global et_arm32_saved
1103 global et_arm32_target_name
1104 global compiler_flags
1106 if { ![info exists et_arm32_target_name] } {
1107 set et_arm32_target_name ""
1110 # If the target has changed since we set the cached value, clear it.
1111 set current_target [current_target_name]
1112 if { $current_target != $et_arm32_target_name } {
1113 verbose "check_effective_target_arm32: `$et_arm32_target_name' `$current_target
'" 2
1114 set et_arm32_target_name $current_target
1115 if { [info exists et_arm32_saved] } {
1116 verbose "check_effective_target_arm32: removing cached result" 2
1117 unset et_arm32_saved
1121 if [info exists et_arm32_saved] {
1122 verbose "check-effective_target_arm32: using cached result" 2
1124 set et_arm32_saved 0
1125 if { [istarget arm-*-*]
1126 || [istarget strongarm*-*-*]
1127 || [istarget xscale-*-*] } {
1128 if ![string match "*-mthumb *" $compiler_flags] {
1129 set et_arm32_saved 1
1133 verbose "check_effective_target_arm32: returning $et_arm32_saved" 2
1134 return $et_arm32_saved
1137 # Return 1 if the target supports hardware vector shift operation.
1139 proc check_effective_target_vect_shift { } {
1140 global et_vect_shift_saved
1142 if [info exists et_vect_shift_saved] {
1143 verbose "check_effective_target_vect_shift: using cached result" 2
1145 set et_vect_shift_saved 0
1146 if { [istarget powerpc*-*-*]
1147 || [istarget ia64-*-*]
1148 || [istarget i?86-*-*]
1149 || [istarget x86_64-*-*] } {
1150 set et_vect_shift_saved 1
1154 verbose "check_effective_target_vect_shift: returning $et_vect_shift_saved" 2
1155 return $et_vect_shift_saved
1158 # Return 1 if the target supports hardware vectors of long, 0 otherwise.
1160 # This can change for different subtargets so do not cache the result.
1162 proc check_effective_target_vect_long { } {
1163 if { [istarget i?86-*-*]
1164 || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
1165 || [istarget x86_64-*-*]
1166 || ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
1172 verbose "check_effective_target_vect_long: returning $answer" 2
1176 # Return 1 if the target supports hardware vectors of float, 0 otherwise.
1178 # This won't change
for different subtargets so
cache the result.
1180 proc check_effective_target_vect_float
{ } {
1181 global et_vect_float_saved
1183 if [info exists et_vect_float_saved
] {
1184 verbose
"check_effective_target_vect_float: using cached result" 2
1186 set et_vect_float_saved
0
1187 if { [istarget i?
86-*-*]
1188 ||
[istarget powerpc
*-*-*]
1189 ||
[istarget mipsisa64
*-*-*]
1190 ||
[istarget x86_64
-*-*]
1191 ||
[istarget ia64
-*-*] } {
1192 set et_vect_float_saved
1
1196 verbose
"check_effective_target_vect_float: returning $et_vect_float_saved" 2
1197 return $et_vect_float_saved
1200 #
Return 1 if the target supports hardware vectors of double
, 0 otherwise.
1202 # This won
't change for different subtargets so cache the result.
1204 proc check_effective_target_vect_double { } {
1205 global et_vect_double_saved
1207 if [info exists et_vect_double_saved] {
1208 verbose "check_effective_target_vect_double: using cached result" 2
1210 set et_vect_double_saved 0
1211 if { [istarget i?86-*-*]
1212 || [istarget x86_64-*-*] } {
1213 set et_vect_double_saved 1
1217 verbose "check_effective_target_vect_double: returning $et_vect_double_saved" 2
1218 return $et_vect_double_saved
1221 # Return 1 if the target plus current options does not support a vector
1222 # max instruction on "int", 0 otherwise.
1224 # This won't change
for different subtargets so
cache the result.
1226 proc check_effective_target_vect_no_int_max
{ } {
1227 global et_vect_no_int_max_saved
1229 if [info exists et_vect_no_int_max_saved
] {
1230 verbose
"check_effective_target_vect_no_int_max: using cached result" 2
1232 set et_vect_no_int_max_saved
0
1233 if { [istarget sparc
*-*-*]
1234 ||
[istarget alpha
*-*-*] } {
1235 set et_vect_no_int_max_saved
1
1238 verbose
"check_effective_target_vect_no_int_max: returning $et_vect_no_int_max_saved" 2
1239 return $et_vect_no_int_max_saved
1242 #
Return 1 if the target plus current options does not support a vector
1243 # add instruction
on "int", 0 otherwise.
1245 # This won
't change for different subtargets so cache the result.
1247 proc check_effective_target_vect_no_int_add { } {
1248 global et_vect_no_int_add_saved
1250 if [info exists et_vect_no_int_add_saved] {
1251 verbose "check_effective_target_vect_no_int_add: using cached result" 2
1253 set et_vect_no_int_add_saved 0
1254 # Alpha only supports vector add on V8QI and V4HI.
1255 if { [istarget alpha*-*-*] } {
1256 set et_vect_no_int_add_saved 1
1259 verbose "check_effective_target_vect_no_int_add: returning $et_vect_no_int_add_saved" 2
1260 return $et_vect_no_int_add_saved
1263 # Return 1 if the target plus current options does not support vector
1264 # bitwise instructions, 0 otherwise.
1266 # This won't change
for different subtargets so
cache the result.
1268 proc check_effective_target_vect_no_bitwise
{ } {
1269 global et_vect_no_bitwise_saved
1271 if [info exists et_vect_no_bitwise_saved
] {
1272 verbose
"check_effective_target_vect_no_bitwise: using cached result" 2
1274 set et_vect_no_bitwise_saved
0
1276 verbose
"check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
1277 return $et_vect_no_bitwise_saved
1280 #
Return 1 if the target plus current options does not support a vector
1281 # alignment mechanism
, 0 otherwise.
1283 # This won
't change for different subtargets so cache the result.
1285 proc check_effective_target_vect_no_align { } {
1286 global et_vect_no_align_saved
1288 if [info exists et_vect_no_align_saved] {
1289 verbose "check_effective_target_vect_no_align: using cached result" 2
1291 set et_vect_no_align_saved 0
1292 if { [istarget mipsisa64*-*-*]
1293 || [istarget sparc*-*-*]
1294 || [istarget ia64-*-*] } {
1295 set et_vect_no_align_saved 1
1298 verbose "check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
1299 return $et_vect_no_align_saved
1302 # Return 1 if the target supports vector conditional operations, 0 otherwise.
1304 proc check_effective_target_vect_condition { } {
1305 global et_vect_cond_saved
1307 if [info exists et_vect_cond_saved] {
1308 verbose "check_effective_target_vect_cond: using cached result" 2
1310 set et_vect_cond_saved 0
1311 if { [istarget powerpc*-*-*]
1312 || [istarget ia64-*-*]
1313 || [istarget i?86-*-*]
1314 || [istarget x86_64-*-*] } {
1315 set et_vect_cond_saved 1
1319 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
1320 return $et_vect_cond_saved
1323 # Return 1 if the target supports vector int multiplication, 0 otherwise.
1325 proc check_effective_target_vect_int_mult { } {
1326 global et_vect_int_mult_saved
1328 if [info exists et_vect_int_mult_saved] {
1329 verbose "check_effective_target_vect_int_mult: using cached result" 2
1331 set et_vect_int_mult_saved 0
1332 if { [istarget powerpc*-*-*]
1333 || [istarget i?86-*-*]
1334 || [istarget x86_64-*-*] } {
1335 set et_vect_int_mult_saved 1
1339 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
1340 return $et_vect_int_mult_saved
1343 # Return 1 if the target supports vector short multiplication, 0 otherwise.
1345 proc check_effective_target_vect_short_mult { } {
1346 global et_vect_short_mult_saved
1348 if [info exists et_vect_short_mult_saved] {
1349 verbose "check_effective_target_vect_short_mult: using cached result" 2
1351 set et_vect_short_mult_saved 0
1352 if { [istarget i?86-*-*]
1353 || [istarget x86_64-*-*] } {
1354 set et_vect_short_mult_saved 1
1358 verbose "check_effective_target_vect_short_mult: returning $et_vect_short_mult_saved" 2
1359 return $et_vect_short_mult_saved
1362 # Return 1 if the target supports vectorization of strided accesses, 0 otherwise.
1364 proc check_effective_target_vect_strided { } {
1365 global et_vect_strided_saved
1367 if [info exists et_vect_strided_saved] {
1368 verbose "check_effective_target_vect_strided: using cached result" 2
1370 set et_vect_strided_saved 0
1371 if { [istarget powerpc*-*-*]
1372 || [istarget ia64-*-*]
1373 || [istarget i?86-*-*]
1374 || [istarget x86_64-*-*] } {
1375 set et_vect_strided_saved 1
1379 verbose "check_effective_target_vect_strided: returning $et_vect_strided_saved" 2
1380 return $et_vect_strided_saved
1383 # Return 1 if the target supports atomic operations on "int" and "long".
1385 proc check_effective_target_sync_int_long { } {
1386 global et_sync_int_long_saved
1388 if [info exists et_sync_int_long_saved] {
1389 verbose "check_effective_target_sync_int_long: using cached result" 2
1391 set et_sync_int_long_saved 0
1392 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
1393 #
load-reserved/store
-conditional instructions.
1394 if { [istarget ia64
-*-*]
1395 ||
[istarget i?
86-*-*]
1396 ||
[istarget x86_64
-*-*]
1397 ||
[istarget alpha
*-*-*]
1398 ||
[istarget s390
*-*-*]
1399 ||
[istarget powerpc
*-*-*] } {
1400 set et_sync_int_long_saved
1
1404 verbose
"check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
1405 return $et_sync_int_long_saved
1408 #
Return 1 if the target supports atomic operations
on "char" and "short".
1410 proc check_effective_target_sync_char_short
{ } {
1411 global et_sync_char_short_saved
1413 if [info exists et_sync_char_short_saved
] {
1414 verbose
"check_effective_target_sync_char_short: using cached result" 2
1416 set et_sync_char_short_saved
0
1417 # This is intentionally powerpc but not rs6000
, rs6000 doesn
't have the
1418 # load-reserved/store-conditional instructions.
1419 if { [istarget ia64-*-*]
1420 || [istarget i?86-*-*]
1421 || [istarget x86_64-*-*]
1422 || [istarget alpha*-*-*]
1423 || [istarget s390*-*-*]
1424 || [istarget powerpc*-*-*] } {
1425 set et_sync_char_short_saved 1
1429 verbose "check_effective_target_sync_char_short: returning $et_sync_char_short_saved" 2
1430 return $et_sync_char_short_saved
1433 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
1434 # This can be used with any check_* proc that takes no argument and
1435 # returns only 1 or 0. It could be used with check_* procs that take
1436 # arguments with keywords that pass particular arguments.
1438 proc is-effective-target { arg } {
1440 if { [info procs check_effective_target_${arg}] != [list] } {
1441 set selected [check_effective_target_${arg}]
1444 "vmx_hw" { set selected [check_vmx_hw_available] }
1445 "named_sections" { set selected [check_named_sections_available] }
1446 "gc_sections" { set selected [check_gc_sections_available] }
1447 default { error "unknown effective target keyword `$arg'" }
1450 verbose
"is-effective-target: $arg $selected" 2
1454 #
Return 1 if the
argument is an effective
-target keyword
, 0 otherwise.
1456 proc is
-effective
-target
-keyword
{ arg } {
1457 if { [info procs check_effective_target_$
{arg}] != [list
] } {
1460 # These have different names
for their check_
* procs.
1462 "vmx_hw" { return 1 }
1463 "named_sections" { return 1 }
1464 "gc_sections" { return 1 }
1465 default
{ return 0 }