Thanks, that got me on the right track. It turns out those variables are
also defined in GSVersions.h. I decided that it was easier to define
OLD_BEZIER_PATH with the preprocessor since make can't do numeric
comparisons by itself:
#if defined(GNUSTEP_GUI_MINOR_VERSION) && GNUSTEP_GUI_MINOR_VERSION < 24
#define OLD_BEZIER_PATH
#endif
and then
#ifdef OLD_BEZIER_PATH
static float phase=0;
static const float pattern[2]={5.0,2.0};
#else
static CGFloat phase=0;
static const CGFloat pattern[2]={5.0,2.0};
#endif
[bezierPath setLineDash:pattern count:2 phase:phase];
I'm not sure how close this is to the actual changed version, but it works
for the versions that I have available.
On Wed, Feb 26, 2014 at 3:20 AM, Richard Frith-Macdonald <
[email protected]> wrote:
>
> On 26 Feb 2014, at 10:15, Kevin Mitchell <[email protected]> wrote:
>
> > I have been experimenting with different versions of the GNUstep
> libraries. I have discovered that somewhere between gnustep-gui=0.20.0-3
> (in Debian unstable) and 0.24.0 (the latest svn), the
> > -[NSBezierPath setLineDash:(const float *)pattern count:(int)count
> phase:(float)phase]
> > has been fixed to be more consistent with the apple implementation
> > -[NSBezierPath setLineDash:(const CGFloat *)pattern
> count:(NSInteger)count phase:(CGFloat)phase]
> >
> > Previously, I succeeded in compiling code that used this method using
> both GNUStep and Cocoa with an #ifdef GNUSTEP hack. Of course, this no
> longer works for the newer gnustep version.
> >
> > I have tried using something like
> >
> > #if GS_API_VERSION(012200, GS_API_LATEST)
>
> The above is used by the gnustep headers to control visibility of APIs
> depending on what version you have declared you want (see
> gnustep.org/resources/documentation/Developer/Base/Reference/index.html).
> That's not what you are trying to do.
>
> > but this doesn't seem to evaluate to false on gnustep-gui=0.20.0
> >
> > what is the proper way to detect and handle different gnustep versions?
>
> You mean GUI version here ... you want to check what version of GUI you
> are building against and have your code behave differently for different
> versions of the GUI.
>
> The information you need is made available within your makefile
> environment. The gui.make fragment (installed when gnustep-gui was
> installed) will have defined something like:
>
> GNUSTEP_GUI_VERSION = 0.24.0
> GNUSTEP_GUI_MAJOR_VERSION = 0
> GNUSTEP_GUI_MINOR_VERSION = 24
> GNUSTEP_GUI_SUBMINOR_VERSION = 0
>
> These variables are available in the make files in your project;
> So you can have your makefile examine the variables and add some define to
> the flags used when building your code (eg define OLDBEZIERPATH)
>
> Then in your source code you could have:
>
> #if defined(OLDBEZIERPATH)
> ...
>
>
>
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