Thomas Winischhofer wrote:
Would you DRI guys mind adding a #define for DRI_VERSION_CURRENT in the same style as XORG_VERSION_CURRENT so that changes like the types from drmHandle -> drm_handle_t can be handled smoothly with the C preprocessor for older versions?
Point being: I would like to compile my DDX driver with both XFree86 and X.org as I don't have time to maintain two or more versions. Since the preprocessor can't check for typedefs (AFAIK...) a DRI_VERSION_CURRENT would come extremely handy.
That shouldn't cause too much hassle...
Thomas,
Versioning has always been a tricky issue for DRI developers, and consequently keeping version numbering simple and up to date is important.
I'd encourage you to considering using/enhancing the existing DRI and DRM versioning. For example, I'm wondering if the runtime version already built into DRM would help. It could be extended to use compile time #define's in places where we currently hard code constants, for example in drmGetLibVersion it looks like the minor version was just bumped to 2. The source for the linux version of this example be seen at:
xc/programs/Xserver/hw/xfree86/drivers/os-support/linux/drm/xf86drm.c
Jens, thanks for your response.
Just to avoid a misunderstanding: This version definition is not meant as an ABI/API/whatever number; I'd just need that for compilation reasons.
If it is complicated for the DRI folks, why not keep such a version #definition in the x.org tree which is updated each time a merge from the DRI tree happens?
For example, in xf86drm.h just add
#define DRI_DATE 20040616
That would solve my particular problem quite easily. The name of the #define is entirely up to you... choose freely. The date format should be in a form suitable for comparison.
That isn't too much work, is it?
Thomas
-- Thomas Winischhofer Vienna/Austria thomas AT winischhofer DOT net *** http://www.winischhofer.net twini AT xfree86 DOT org
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