[Libreoffice] In config.log: conftest.c(42) : fatal error C1083:

[Regina Henschel]

Hi all,

I'm try to find out, what parameter to autogen.sh are really needed for 
a build with Cygwin and Visual Studio Express. So I start with a pure 
./autogen.sh

I see the following error in config.log
conftest.c(42) : fatal error C1083: Cannot open include file: 
'valgrind.h': No such file or directory

The output itself gives only
checking valgrind.h usability... no
checking valgrind.h presence... no
checking for valgrind.h... no

I wonder about the term "fatal error".

Kind regards
Regina