Re: [Plplot-devel] Notes on building the wxwidgets software package on MinGW/MSYS

[Alan W. I. <ir...@be...>]

To Phil and Arjen:

I have read all your recent e-mails on this subject, and
here is a summary of where I think we stand.

@Arjen: 
I ascribe the symptoms you found for my original patch to the
static/dynamic inconsistency between the C and C++ run times caused by
the known issue with my original patch.  So please try my latest patch
instead (and especially the variant of it I describe below).

> On 2013-03-12 12:08, phil rosenberg wrote:

>> Alan, regarding your patch - some good news and some bad. The
good news is that the patch now gives the correct flags to provide the
static build.

>> However the bad news is that it seems to have brocken
something in the wxwidgets cmake module. Previously I could use  set
CXXFLAGS=/DUNICODE /D_UNICODE set CFLAGS=/DUNICODE /D_UNICODE
before calling cmake to use unicode. Now if i do this the unicode
option is still set in plplot, however the wxWidgets module no longer
finds the unicode version of the wxWidgets libraries so I get linker
errors for all the examples. This is because wxString is different for
unicode and non-unicode builds.

@Both:

Please try a variant of my latest patch with

set(${flag_var} "${${flag_var}}" CACHE STRING "Flags used by the
compiler" FORCE)

commented out in cmake/modules/plplot.cmake.  That line
forces the cached form of those variables to have the same
contents as the uncached version, but I don't think that is
necessary, and forcing cached variables can have some
side effects (perhaps like Phil encountered above) which
we want to avoid.

The only downside of commenting out the above line that I am aware of
is a cosmetic one.  With that line commented out, CMakeCache.txt will
contain the unchanged cached variables (with /MD rather than /MT) ,
and you will have to look at the exact commands generated by nmake at
run time to see whether the /MT flags have been applied properly in
all cases.

By the way, I think commenting out the above line will make my
patch equivalent to Phil's original patch (except that my
patch does the changes in the correct location so that the
logic doesn't have to be repeated for all the different subdirectories).

@Phil: so let me know if there is any difference at all between results
for my patch (with the above line commented out) and your original
patch.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
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