Brian Inglis wrote:
On 2021-08-13 19:54, Takashi Yano via Cygwin wrote:
On Fri, 13 Aug 2021 15:20:40 -0700, Mark Geisert wrote:
Jay Abel via Cygwin wrote:
On Fri, Aug 13, 2021 at 10:27 AM Jay Abel <jay.a...@gmail.com> wrote:
Sorry, more information. I'm running Windows 10, 64-bit, AMD.
I've reverted cygutils back to 1.4.16-2 and the problem is resolved.
Run cygstart with anything and no window opens. I've tried URLS cygstart
http://www.cygwin.com, directories cygstart . and cygstart ./ as well as
pdf files cygstart example.pdf.
None of these seems to do anything anymore.
I have the same setup as you but all seems well here. With 1.4.16-3 installed
all
four of your testcases work for me. I don't know what to suggest.
When you have a chance, what does 'echo $?' say at the prompt after cygstart
finishes one of your testcases? 0 means successful, 1 (or something else) means
failure.
I have the same issue with cygstart in cygutils 1.4.16-3.
"cygstart .; echo $?" says 0.
This issue only happens in 64bit cygwin and cygstart in 32bit cygwin works.
To look into this problem, I tried to build cygutils from source,
however, it fails in the link stage of getclip with the error:
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
src/clip/getclip.o: in function `getclip':
/usr/src/debug/cygutils-1.4.16-3/src/clip/getclip.c:431: undefined reference to
`__imp_RtlUnicodeToUTF8N'
It seems that -lntdll flag is required to build it. Doesn't this error
happen in your environment?
So I modified Makefile.am to:
src_clip_getclip_LDADD = -lpopt -lntdll
src_clip_putclip_LDADD = -lpopt -lntdll
and tried to build again and succeeded.
The cygstart built locally works fine.
So I tried to debug cygstart using gdb and it says:
Thread 1 received signal SIGILL, Illegal instruction.
The disassembling result at $rip is:
=> 0x0000000100401c15 <+389>: vmovdqa 0x18c3(%rip),%xmm0 # 0x1004034e0
This is a AVX instruction.
My CPU is Core i7-870, which does not support AVX.
Then I ran cygstart in another machine whose CPU is Core i7-4790
and it works without the issue.
Conclusion:
cygstart in cygutils 1.4.16-3 is compiled with AVX extentions,
therefore it can not run in old machine.
Any chance this could have been built with test gcc 11 using non-standard values
instead of defaults -march=x86-64/i686 -mtune=generic?
No, gcc 10.2.0 was used with those defaults.
..mark
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