+_xa = get_option('gallium-xa')
+if _xa == 'auto'
+ if not ['linux', 'bsd'].contains(host_machine.system())
+ with_gallium_xa = false
+ elif not (with_gallium_nouveau or with_gallium_freedreno or with_gallium_i915
+ or with_gallium_svga)
+ with_gallium_xa = false
+ else
+ with_gallium_xa = true
+ endif
+elif _xa == 'true'
+ if not ['linux', 'bsd'].contains(host_machine.system())
+ error('XA state tracker can only be built on unix-like OSes.')
+ elif not (with_gallium_nouveau or with_gallium_freedreno or with_gallium_i915
+ or with_gallium_svga)
+ error('XA state tracker requires at least one of the following gallium drivers: nouveau, freedreno, i915, svga.')
+ endif
+ with_gallium_xa = true
+else
+ with_gallium_xa = false
+endif
+
+d3d_drivers_path = get_option('d3d-drivers-path')
+if d3d_drivers_path == ''
+ d3d_drivers_path = join_paths(get_option('libdir'), 'd3d')
+endif
+
+with_gallium_st_nine = get_option('gallium-nine')
+if with_gallium_st_nine
+ if not with_gallium_softpipe
+ error('The nine state tracker requires gallium softpipe/llvmpipe.')
+ elif not (with_gallium_radeonsi or with_gallium_nouveau or with_gallium_r600
+ or with_gallium_r300 or with_gallium_svga or with_gallium_i915)
+ error('The nine state tracker requires at least on non-swrast gallium driver.')
+ endif
+ if not with_dri3
+ error('Using nine with wine requires dri3')
+ endif
+endif
+
+_opencl = get_option('gallium-opencl')
+if _opencl != 'disabled'
+ if not with_gallium
+ error('OpenCL Clover implementation requires at least one gallium driver.')
+ endif
+
+ # TODO: alitvec?
+ dep_clc = dependency('libclc')
+ with_gallium_opencl = true
+ with_opencl_icd = _opencl == 'icd'
+else
+ dep_clc = []
+ with_gallium_opencl = false
+ with_gallium_icd = false
+endif
+