Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Tue, 10 Jul 2012 13:21:35 +0200

On Monday, July 09, 2012, Jeffrey Gebhardt wrote:
> After applying your fix I now get the following error:
> 
> ..\\..\\..\\bin\\win32-x86\\lemon.exe o=. ../snl.lem
> 3 parsing conflicts.
> # empty recipy needed to work around make bug #35455
> process_begin: CreateProcess(NULL, # empty recipy needed to work around
> make bug #35455, ...) failed.
> make (e=2): The system cannot find the file specified.
> gmake[4]: *** [snl.h] Error 2

Oh my. Why does it have to be so &@#^$&#^%$* difficult to get this rule to 
work in a portable way?

I intended the '#' character to be a comment for make, not for the shell. My 
mistake, the gnu make manual is clear on that: A comment sign in a recipy is 
passed to the shell. The idea was to document that there must be an empty 
recipy here, because I thought a simple dependency declaration (without any 
recipy at all) would suffice, but due to make bug #35455 is doesn't.

> However, changing:
> 
> snl.h: snl.c
>      # empty recipy needed to work around make bug #35455
> 
> to:
> 
> snl.h: snl.c
>      echo "empty recipy needed to work around make bug #35455"
> 
> in src/snc/Makefile seems to fix the problem.  Now both make and make -j
> work.

I'd rather not have the echo command here. Can you please check if the 
following lines work, too? According to the make manual it should.

# empty recipy needed to work around make bug #35455
snl.h: snl.c ;

Cheers
Ben

> On 7/9/2012 5:33 AM, Benjamin Franksen wrote:
> > On Friday, July 06, 2012, you wrote:
> >> I am trying to build seq-2.1.8 on Windows XP.  When I do a parallel
> >> make (make -j) it builds with out error.
> >> But if I build with no makeflags set, I get the following error:
> >> 
> >> re2c.exe -s -b -o lexer.c ../snl.re
> >> cl -c               /nologo /D__STDC__=0 /D_CRT_SECURE_NO_DEPRECATE
> >> /D_CRT_NONSTDC_NO_DEPRECATE   /Ox /GL   /W3 /w44355       /MT
> >> -DEPICS_DLL_NO    -I. -I..\\O.Common -I. -I..
> >> -I..\\..\\..\\include\\os\\WIN32 -I..\\..\\..\\include
> >> -IC:\\SVN\\base\\in clude\\os\\WIN32 -IC:\\SVN\\base\\include
> >> lexer.c
> >> lexer.c
> >> ../snl.re(16) : fatal error C1083: Cannot open include file: 'snl.h':
> >> No such file or directory
> >> gmake[4]: *** [lexer.obj] Error 2
> >> 
> >> 
> >> Only lexer.c and lexer.d are in src/snc/O.win32-x86.   During the
> >> parallel build snl.h is created.
> >> I'd appreciate any help you can provide.
> > 
> > I made a stupid mistake when adding the dependency
> > 
> >    lexer.o: snl.h
> > 
> > to src/snc/Makefile. Of course this should be
> > 
> >    lexer$(OBJ): snl.h
> > 
> > This should solve your build problem. Please tell me if it does not.
> > Otherwise I will make this change and provide a new release.
> > 
> > Cheers
> > Ben

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System