Hi, The problem appears simpler than I first thought; it seems Automake is hard-coded to expect 'endif' to be matched with its own 'if'; causing parsing errors when attempting to use Make's conditional such as ifdef, ifeq, etc. that also end with 'endif'.
This was reported 23 years ago here: https://lists.gnu.org/archive/html/bug-automake/2001-11/msg00015.html There is workaround proposed that makes use of an output variable to hide the 'endif' behind it: --8<---------------cut here---------------start------------->8--- ENDIF=endif AC_SUBST(ENDIF) and to apply this in Makefile.am: ifdef f .. @ENDIF@ --8<---------------cut here---------------end--------------->8--- I've tested the above and it appear to work, but perhaps Automake could accommodate Make snippets better? -- Thanks, Maxim