Dear list readers,
Related to the msvcrXX.dll problem i have, i'm trying to understand
how to tell my toolchan that i'll be willing to use msvcr80.
So i found this page: http://www.mingw.org/wiki/SpecsFileHOWTO
wich is talking about modifying the specs of gcc.
However, something is unclear and really hardly findable
on the net. As i'm compiling the Qt IFW project, i have to
use the QMake build system for makefiles generation. Right
now, i'm not sure if i would have to change the makefiles once
they are generated by QMake, or if i would have to change
something in Qt's mkspecs (i'm using the default win32-g++ one),
or even if i would create a GCC-specific specs file that would
override the defaults it uses.
Clearly, i can see right now that GCC is using msvcrt thanks to
the output of "gcc -dumpspecs":
*libgcc:
%{mthreads:-lmingwthrd} -lmingw32 %{shared-libgcc:-lgcc_s}
%{!shared-libgcc:-lgcc_eh} -lgcc -lmoldname -lmingwex -lmsvcrt
But now, let's say i dump the whole specs to a file, and then i change
this file. The HOWTO page says that later when building a program,
gcc can be invoked with the -specs="my_new_specs_path" option.
Would that be the way that is the best for such case? The thing is,
once i'll be done with this investigation, i would like to submit all the
changes to the Qt IFW project, and i'm not sure if a GCC specs file
is a good idea at all. So instead, is there a way to change specs on
a value-basis? For instance, in the Qt IFW project files, i could say:
GCC += "-specs=/mingw/msvcr80_specs", but this would involve
an external file to be made. i would rather like to be able to do
something like:
GCC += "-specs-override-libgcc=-lmsvcr80"
which would override the default msvcrt to msvcr80. Is there such
per-value override, or anything allowing to change the specs "on-the-fly"
without an external full specs file?
Not sure if i'm being clear enough.
Thanks for your guidance,
Pierre.
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