This patch, which can be found on the Mesa3D development list, basically adds in Haiku support to a few OS conditional checks and then provides a few includes for some Haiku header files. We have yet to test out any Gallium3D code on Haiku nor did the developer elaborate on his intentions for Gallium3D and Haiku, but the patch is freely available. Haiku OS is also expected to announce its first alpha release within the next week.
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