Hi!
On Tue, 15 Dec 2015 17:44:59 +0100, I wrote:
> On Wed, 9 Dec 2015 17:56:13 +0800, "Thomas Preud'homme"
> <thomas.preudho...@arm.com> wrote:
> > c-c++-common/attr-simd-3.c fails to compile on arm-none-eabi targets due to
> > -fcilkplus needing -pthread which is not available for those targets. This
> > patch solves this issue by adding a condition to the cilkplus effective
> > target that compiling with -fcilkplus succeeds and requires cilkplus as an
> > effective target for attr-simd-3.c testcase.
>
> > PR testsuite/68629
> > * lib/target-supports.exp (check_effective_target_cilkplus): Also
> > check that compiling with -fcilkplus does not give an error.
> > * c-c++-common/attr-simd-3.c: Require cilkplus effective target.
>
> > --- a/gcc/testsuite/lib/target-supports.exp
> > +++ b/gcc/testsuite/lib/target-supports.exp
> > @@ -1432,7 +1432,12 @@ proc check_effective_target_cilkplus { } {
> > if { [istarget avr-*-*] } {
> > return 0;
> > }
> > - return 1
> > + return [ check_no_compiler_messages_nocache fcilkplus_available
> > executable {
> > + #ifdef __cplusplus
> > + extern "C"
> > + #endif
> > + int dummy;
> > + } "-fcilkplus" ]
> > }
> >
> > proc check_linker_plugin_available { } {
> >
> >
> > Testsuite shows no regression when run with
> > + an arm-none-eabi GCC cross-compiler targeting Cortex-M3
> > + a bootstrapped x86_64-linux-gnu GCC native compiler
>
> With this committed in r231605, I now see all gcc/testsuite/ Cilk+
> testing disappear for "configure && make && make check", because of:
>
> Executing on host: [...]/build-gcc/gcc/xgcc -B[...]/build-gcc/gcc/
> fcilkplus_available14337.c -fno-diagnostics-show-caret
> -fdiagnostics-color=never -fcilkplus -lm -o fcilkplus_available14337.exe
> (timeout = 300)
> spawn [...]/build-gcc/gcc/xgcc -B[...]/build-gcc/gcc/
> fcilkplus_available14337.c -fno-diagnostics-show-caret
> -fdiagnostics-color=never -fcilkplus -lm -o fcilkplus_available14337.exe
> xgcc: error: libcilkrts.spec: No such file or directory
> compiler exited with status 1
By the way, this also happens for c-c++-common/attr-simd-3.c, gcc.log,
for example:
Executing on host: [...]/build-gcc/gcc/xgcc -B[...]/build-gcc/gcc/
fcilkplus_available14668.c -fno-diagnostics-show-caret
-fdiagnostics-color=never -fcilkplus -lm -o fcilkplus_available14668.exe
(timeout = 300)
spawn [...]/build-gcc/gcc/xgcc -B[...]/build-gcc/gcc/
fcilkplus_available14668.c -fno-diagnostics-show-caret
-fdiagnostics-color=never -fcilkplus -lm -o fcilkplus_available14668.exe
xgcc: error: libcilkrts.spec: No such file or directory
compiler exited with status 1
output is:
xgcc: error: libcilkrts.spec: No such file or directory
UNSUPPORTED: c-c++-common/attr-simd-3.c -Wc++-compat
Can you confirm and are you going to resolve that?
> Can you confirm that in your build/test tree, the compiler is picking up
> the build-tree libcilkrts, and not the one from /usr/lib/ (or similar)?
>
> Long ago, in r208889, a similar problem has been diagnosed and fixed by
> Rainer and Tobias (CCed just in case),
> <http://news.gmane.org/find-root.php?message_id=%3C53336904.5010003%40net-b.de%3E>,
> so I wonder what broke now?
Grüße
Thomas
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