Dag-Erling Smørgrav <des at des.no> writes: >>> +. if !defined(CSTD) >>> +CSTD = gnu89 >>> +. endif What I meant to write here is that . if !defined(CSTD) CSTD = gnu89 . endif can simply be written as CSTD ?= gnu89 DES -- Dag-Erling Smørgrav - des at des.no