Jim Meyering 6bb6713807 build: do not override gnulib-provided AM_CFLAGS options
Avoid a warning from automake:
lib/Makefile.am:23: AM_CFLAGS multiply defined in condition TRUE ...
lib/gnulib.mk:30: ... `AM_CFLAGS' previously defined here
lib/Makefile.am:18:   `lib/gnulib.mk' included from here

* lib/Makefile.am (AM_CFLAGS): Append $(WARN_CFLAGS) and
$(WERROR_CFLAGS), i.e., use "+=", not "=".
This was introduced via 2009-12-17 commit e58efa5b
"build: enable warnings and -Werror.",
but fortunately is not a bug, because the definition
it would have overridden was always empty.
2010-02-04 20:03:03 +01:00
..
2001-11-23 13:28:32 +00:00