Well, interestingly enough, the problem is not directly with the
compiler optimizer. It's with the configure test for strncasecmp. This
test fails on mingw in its current incarnation because guile uses a
standard test for the function, but on mingw strncasecmp is actually a
cpp definition. As a result, guile is compiled with #HAVE_STRNCASECMP
unset, and so guile tries to create its own version in read.c
Now if you compile with no optimization, the compiler notices that
read.c is attempting to create this with a different signature and bombs
out. However, with optimisation on, the code compiles for some reason,
and then fails to run properly.
So there seem to be two problems: one in configure for guile and/or the
standard configure macros on mingw, the other in the compiler.
Fortunately, there's a very easy although ugly workaround, which is to
add an
echo "#define HAVE_STRNCASECMP" >>config.h
in install-impl.sh
just after the guile configure and before the make
I've incorporated this fix into my downloadable file of fixes as
referred to on the wiki page I updated.
More as and when I find any further issues. As always, feedback or other
experiences welcome.
Gary
On 09/01/2014 16:49, Gary Bilkus wrote:
Hmm,
The problem appears to be with the compiler optimiser doing something too
aggressive, If I manually recompile guile with -O0 instead of -O2 the problem
seems to go away. This could be caused by one of the new optimisations in the
more recent versions of gcc in which case it could start to matter on *nix at
some point. Anyone know much about this?
Gary
-----Original message-----
From:Gary Bilkus <m...@gary.bilkus.com>
Sent:Thu 09-01-2014 13:37
Subject:Building on Windows from scratch - guile problem
To:gnucash-devel@gnucash.org;
I have done some testing of my build, and it appears there is some kind
of problem with guile
The symptom is that whenever I try to run a report, even hello world, it
fails.
Digging into things, it turns out that there is at least one problem
with the guile build, whcih is that
character constants like #\space are not being initialized correctly.
Just running guile standalone shows the problem.
guile> #\space
\#nul
So there's obviously some problem with the guile build over and above
the library naming one I found earlier. Not sure if it's the version,
the compiler version or what.
Will investigate further, but any suggestions or experience from other
would be welcome....
Gary
On 08/01/2014 15:07, Gary Bilkus wrote:
I have written up the procedure which as of today is working to build
gnucash 2.6 from scratch on windows and updated
http://wiki.gnucash.org/wiki/Windows/Development
It would be really nice if the patch file I have created along with my
modified version of geert's vbs file could find their way into the
official repo.
It should be safe enough as all the changes are to the win32 directory
except for two, which I'm reasonably confident won't break anything else:
- configure.ac now deals with the -no-undefined flag more cleverly
- gnc-split-reg.h has a couple of #undef statements added to avoid
DELETE and DUPLICATE being defined in windows headers.
It probably also makes sense for the page to be split up again, and
some of the older information moved away, but it would be good to get
some feedback from people who try following the instructions.
I've done my best to ensure that there are no ambiguities or
misprints, and the entire process has worked for me, but feel free to
fix any errors, or tell me of any changes I can/should make to the zip
file I've published.
Please note that I haven't extensively tested all the features of the
program. There could be some issues with the build which don't
immediately manifest themselves......but at least it runs.
Also, I haven't yet tried packaging the app into an msi or installable
exe
Gary
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