On Aug 29 08:52, airplanemath via Cygwin wrote:
> Hello,
>
> I have two reports. A brief description of the system:
> $ uname -a | sed "s/${HOSTNAME}/\${HOSTNAME}/g"
> CYGWIN_NT-10.0 ${HOSTNAME} 3.1.7(0.340/5/3) 2020-08-22 17:48 x86_64 Cygwin
>
> The first report:
>
> $ cpp /usr/include/threads.h
> # 1 "/usr/include/threads.h"
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "/usr/include/threads.h"
> /usr/include/threads.h:30:10: fatal error: machine/_threads.h: No such
> file or directory
> 30 | #include <machine/_threads.h>
> | ^~~~~~~~~~~~~~~~~~~~
> compilation terminated.
The reason for this is, as Ken already pointed out, that
machine/_threads.h only existed for RTEMS, not for any other target
supported by newlib. Worse, Cygwin never got around to implement the
C11 threads functions yet.
I added these functions as wrappers around pthread functionality, code
taken from FreeBSD. I ran the glibc testsuite on them, and after fixing
the bugs in the glibc testsuite (d'oh), the tests ran successfully.
> $ cat test.c
> #include <math.h>
> #include <stdio.h>
> #include <stdlib.h>
>
> int main(int argc, char *argv[]) {
> long double a, b, c;
> char *num_end = NULL;
> a = b = c = 0.0L;
> if (argc != 2) {
> fprintf(stderr, "Usage: %s NUMBER\n", argv[0]);
> exit(1);
> }
> a = strtold(argv[1], &num_end);
> b = modfl(a, &c);
> printf("%Lf %Lf %Lf\n", a, b, c);
> return 0;
> }
This is a bug in the assembler code taken from Mingw-w64. The bug has
been fixed upstream, so I just pulled in the upstream fixes.
Thus, both of the above problems should be fixed now. I created a
developer snapshot and uploaed it to https://cygwin.com/snapshots/ You
need to grab the full tar file and install at least the following files
to your installation after backing up the original files from 3.1.7:
usr/bin/cygwin1.dll (this is pre-release 3.2.0)
usr/lib/libcygwin.a
usr/include/limits.h
usr/include/pthread.h
usr/include/machine/_threads.h
Thanks for the report.
Corinna
--
Corinna Vinschen
Cygwin Maintainer
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