>>> "Bruce" == Bruce Allen <[EMAIL PROTECTED]> writes:
[...] Bruce> In other words: Bruce> libboincbenchmark_a_CXXFLAGS=-O3 Bruce> CXXFLAGS=-g -O2 Bruce> and I end up with Bruce> -O3 -g -O2. Bruce> Any idea how to get around this? I have never been in this situation, so perhaps the idea below has flaws that I can't see. Basically my impression is that in this case, `-g -O2' is not some option that the user selected. So it makes sense to override them locally. However if the user really had set CFLAGS, you should not override this setting: the user should always have the last say. Given this, I think I'd replace AC_PROG_CC by user_CFLAGS=$CFLAGS AC_PROG_CC if test "x$user_CFLAGS" = x; then # If the user didn't specify CFLAGS, then CFLAGS contains # a subset of -g -O2 selected by AC_PROG_CC. This is not # a user setting, and we want to be able to override this # locally in our rules, so put these flags in a separate # variable and empty CFLAGS. AC_SUBST([DEFAULTFLAGS], [$CFLAGS]) CFLAGS= fi and in Makefile.am use foo_CFLAGS = $(DEFAULTFLAGS) and libfoo_a_CFLAGS = $(DEFAULTFLAGS) $(O3) as appropriate. ($(O3) being the Makefile variable that contains -O3 if the compiler support it). Does that sound sensible? -- Alexandre Duret-Lutz
