SCons build error: Undefined symbols "_glsl_count_attribute_slots"
macOS SCons build error
Linking build/darwin-x86_64-debug/gallium/targets/graw-xlib/libgraw.dylib ...
Undefined symbols for architecture x86_64:
"_glsl_count_attribute_slots", referenced from:
_get_deref_offset in libgallium.a(lp_bld_nir.os)
_init_var_slots in libgallium.a(lp_bld_nir_soa.os)
_nir_tgsi_scan_shader in libgallium.a(nir_to_tgsi_info.os)
_gather_usage_helper in libgallium.a(nir_to_tgsi_info.os)