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Re: [lmi] Error on line 20 of a file that doesn't exist?

From: Vadim Zeitlin
Subject: Re: [lmi] Error on line 20 of a file that doesn't exist?
Date: Tue, 28 Jul 2020 23:57:03 +0200

On Tue, 28 Jul 2020 21:40:21 +0000 Greg Chicares <gchicares@sbcglobal.net> 

GC> On 2020-07-28 18:17, Greg Chicares wrote:
GC> [...]
GC> > i686-w64-mingw32-gcc.exe: error: 
/srv/cache_for_lmi/vcs/wxWidgets/src/png/arm/palette_neon_intrinsics.c: No such 
file or directory
GC> > i686-w64-mingw32-gcc.exe: fatal error: no input files
GC> > compilation terminated.
GC> > make: *** [Makefile:14861: wxpng_palette_neon_intrinsics.o] Error 1
GC> > make: *** Waiting for unfinished jobs....
GC> > 
warning: "PNG_ARM_NEON_IMPLEMENTATION" is not defined, evaluates to 0 [-Wundef]
GC> >  #if PNG_ARM_NEON_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
GC> >      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
GC> > 
GC> > The "No such file ... no input files" message seems to suggest that file
GC> > '/srv/cache_for_lmi/vcs/wxWidgets/src/png/arm/palette_neon_intrinsics.c'
GC> > doesn't exist. But then we have a warning on line twenty of that file,
GC> > suggesting that it must exist. And it does exist on my own machine:
GC> We simply reran the script, and now it has gotten past that error.
GC> There's plenty of free disk space, and RAM doesn't seem to be an
GC> issue. We find nothing relevant in the msw "event viewer".
GC> My guess is that poor corporate anti-malware broke the last build.

 Writing it down as just another anti-virus side effect seems very
appealing because I just don't see any other explanation right now. If the
error happens again, with the same file, the only idea I have is to run 
Process Monitor[*] with a filter to include only the events for this file
and check what's going on here, i.e. whether the syscall to open it fails
and, if so, why. AFAIK "No such file or directory" error can only happen
because the file couldn't be found, but I could be missing something, of


[*] https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

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