LEX vs FLEX; Was: [PATCH] Basic Ada files

[Andrew Cagney <ac131313@cygnus.com>]

Aidan,

> -# This is used to rebuild ada-lex.c from ada-lex.l.  If the program is 
> -# not defined, but ada-lex.c is present, compilation will continue,
> -# possibly with a warning.
> -FLEX = flex
> -

> -ada-lex.c: ada-lex.l
> -	@if [ "$(FLEX)" ] && $(FLEX) --version >/dev/null 2>&1; then \
> -	    echo $(FLEX) -Isit $(srcdir)/ada-lex.l ">" ada-lex.c; \
> -	    $(FLEX) -Isit $(srcdir)/ada-lex.l > ada-lex.c; \
> -	elif [ ! -f ada-lex.c -a ! -f $(srcdir)/ada-lex.c ]; then \
> -	    echo "ada-lex.c missing and flex not available."; \
> -	    false; \
> -	elif [ ! -f ada-lex.c ]; then \
> -	    echo "Warning: ada-lex.c older than ada-lex.l and flex not available."; \
> -	fi

(I note you're not the author of this)  I'm not exactly comfortable with 
making  FLEX a condition of being able to build GDB - while the above 
tries to hide it, the dependency still exists.  I guess we'll need to 
come back to that later.

Anyway, can you just re-post this patch with a separate ChangeLog and 
with the patch against CVS (using `cvs diff -u' or `cvs diff -p').

Andrew