Re: Cannot build gcc-4.1.2 on cygwin: /bin/sh: kinds.h: No such file or directory

[Brian Dessent <brian at dessent dot net>]

Brooks Moses wrote:

> > Í just tried to build gcc-4.1.2 for cygwin... but failed. My old way
> > of test building does not seem to work anymore for me.
> [...]
> > grep '^#' < kinds.h > kinds.inc
> > /bin/sh: kinds.h: No such file or directory
> [...]
> > Any ideas of what might be going wrong?
> 
> A quick bit of google-searching on "site:gcc.gnu.org kinds.h" turns up
> an email thread on the fortran@ list that refers to PR26893.  See:
>    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26893
> 
> In short, from what I could tell from a quick scan of that PR, the
> problem is that you've got LD_LIBRARY_PATH set in such a way that it's
> not including the GMP header files.
> 
> If you're using the standard Cygwin-package installation of GMP, I'd
> guess this is because you haven't installed the "development" GMP
> package that includes the header files; since Cygwin puts that into a
> separate package, you need to install both.  (MPFR is the same way.)

I don't think that applies in the case of Cygwin, since Windows does not
know anything about LD_LIBRARY_PATH.  (Cygwin emulates it for dlopen()
but I don't think that's relevant here.)

I can say that I was able to successfully build and test the 4.1.2
20070129 (prerelease) version under Cygwin using the Cygwin-packaged
mpfr (2.2.1) and gmp (4.2.1) without any setting of LD_LIBRARY_PATH and
it passed all tests except for gfortran.dg/secnds.f which is a known
bug.  So unless the released 4.1.2 tarball differs from the RC1 tarball
in this area, it's something else and not a gmp/mpfr/libgfortran
problem.

In order to debug this, poster should run the faulting series of
commands and see what the errors are, i.e.:

for k in 4 8 10 16; do
  echo "  real (kind=$k) :: x" > tmp$$.f90
  echo "  end" >> tmp$$.f90
  /usr/local/src/branch/objdir/./gcc/gfortran
-B/usr/local/src/branch/objdir/./gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -I . -Wall -fno-repack-arrays
-fno-underscoring -c tmp$$.f90
done

Brian