[PATCH] version.h: Add version check macro

[Kristian Høgsberg]

On Mon, Sep 23, 2013 at 10:39:08AM -0700, Kristian Høgsberg wrote:
> On Mon, Sep 23, 2013 at 07:26:03AM +0200, Pier Luigi Fiorini wrote:
> > Make it easier to check for a Weston version.
> 
> Ah yup, I lost track of that one.  Thanks, committed.
> 
> Kristian
> 
> > ---
> >  src/version.h.in | 12 +++++++++++-
> >  1 file changed, 11 insertions(+), 1 deletion(-)
> > 
> > diff --git a/src/version.h.in b/src/version.h.in
> > index f573328..d45172c 100644
> > --- a/src/version.h.in
> > +++ b/src/version.h.in
> > @@ -26,6 +26,16 @@
> >  #define WESTON_VERSION_MAJOR @WESTON_VERSION_MAJOR@
> >  #define WESTON_VERSION_MINOR @WESTON_VERSION_MINOR@
> >  #define WESTON_VERSION_MICRO @WESTON_VERSION_MICRO@
> > -#define WESTON_VERSION "@WESTON_VERSION@"
> > +
> > +#define WESTON_VERSION ((WESTON_VERSION_MAJOR << 16) | (WESTON_VERSION_MINOR << 8) | (WESTON_VERSION_MICRO))
> > +#define WESTON_VERSION_STR "@WESTON_VERSION@"
> > +
> > +/*
> > +    Can be used like #if (WESTON_VERSION >= WESTON_VERSION_AT_LEAST(1, 2, 0))
> > +*/
> > +#define WESTON_VERSION_AT_LEAST(major, minor, micro) \
> > +        (WESTON_VERSION_MAJOR == (major) && \
> > +         WESTON_VERSION_MINOR == (minor) && \
> > +         WESTON_VERSION_MICRO >= (micro))

Actually, I trimmed the patch to be just the WESTON_VERSION_AT_LEAST
macro.  WESTON_VERSION is still the version string and I updated the
comment to say

	/* Can be used like #if WESTON_VERSION_AT_LEAST(1, 2, 0) */

Kristian

> >  
> >  #endif
> > -- 
> > 1.8.3.1
> > 
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