So you have : COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) which suggest that this rogue string is coming from one of the variables
$(AM_CPPFLAGS) (CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) Try printing the values of those and then work backwards to find out where the bad one is getting set. J' On Sat, Dec 12, 2020 at 03:39:04PM +0000, Harry Thijssen wrote: when in the gl directory, grep -e '-oO' Makefile gives me nothing I attached the Makefile. Op za 12 dec. 2020 om 14:53 schreef John Darrington < j...@darrington.wattle.id.au>: > On Sat, Dec 12, 2020 at 02:27:08PM +0100, Harry Thijssen wrote: > Hi > > It is on a from scratch fresh installed virtual machine. So nothing > available from earlier compilations. And no traces of > earlier installations. > In fact it is an upgrade from my procedures, not from an environment. > > I have no clue where it comes from. > > You need to investiage this "-o0" is surely the culprit. As a first line > of > investigation try grepping gl/Makefile for this string. > > J' >