Is there a particular method to reproduce it? With hrev20147 it works for me at least:
$ jam -q radeon.driver ...patience... ...patience... ...found 2041 target(s)... ...updating 144 target(s)... [...] Link generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver Chmod1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver SetType1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver MimeSet1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver SetVersion1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver ...updated 144 target(s)... $ touch src/add-ons/kernel/drivers/graphics/common/memory_manager.c $ jam -q radeon.driver ...patience... ...patience... ...found 2041 target(s)... ...updating 3 target(s)... Cc generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/common/memory_manager.o Archive generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/common/libgraphicscommon.a Ranlib generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/common/libgraphicscommon.a Link generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver Chmod1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver SetType1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver MimeSet1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver SetVersion1 generated/objects/haiku/x86/release/add-ons/kernel/drivers/graphics/radeon/radeon.driver ...updated 3 target(s)...
