[Webkit-unassigned] [Bug 161433] [CMake] CMake does not support the dep files for implicit dependency

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161433

--- Comment #22 from Fujii Hironori <Hironori.Fujii at sony.com> ---
I've succeeded to reproduce this flaky problem.  The reproduction
ratio of this problem depends on which Perl is used and which version
of Cygwin is used.

64bit ActivePerl : never happen
64bit latest Cygwin Perl: never happen
32bit latest Cygwin Perl: I saw the problem only once
32bit 5-month-old Cygwin Perl: about 10%
32bit 3-year-old Cygwin Perl: never happen

I dumped $! and $?.

>  Can't exec "/usr/bin/perl": Bad address at C:/home/0000134108/work/webkit/webkit1/Source/WebCore/bindings/scripts/generate-bindings-all.pl line 159.
>  Thread 8 terminated abnormally: generate-bindings.pl fails: ($!=Bad address)($?=-1) at C:/home/0000134108/work/webkit/webkit1/Source/WebCore/bindings/scripts/generate-bindings-all.pl line 159.
>  	...propagated at C:/home/0000134108/work/webkit/webkit1/Source/WebCore/bindings/scripts/generate-bindings-all.pl line 164.
>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(171,5): error MSB6006: "cmd.exe" exited with code 1.

Sometimes different error message and no error message:

>  SVGScriptElement.idl
>  SVGStringList.idl
>        1 [main] perl 3588 cygwin_exception::open_stackdumpfile: Dumping stack trace to perl.exe.stackdump
>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(171,5): error MSB6006: "cmd.exe" exited with code 1536.

This seems Cygwin fork failure problem.
https://cygwin.com/faq/faq.html#faq.using.fixing-fork-failures

I'd like to request installing ActiveState Perl on BuildBot as
described in this page <https://webkit.org/webkit-on-windows/>.
And, Uninstall Cygwin because cmake script append a path to cygwin.
<https://trac.webkit.org/browser/trunk/Source/cmake/WebKitCommon.cmake?rev=207060#L13>

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