Applied (finally ;-)
Jivin John Williams lays it down ...
> Hi,
>
> ucfront-ld tool chokes on the "NONE" libc option (for standalone
> toolchains with built-in uClibc, for example).
>
> Dumping the environment inside config/common/config.arch, I have:
>
> CONFIG_DEFAULTS_LIBC_NONE=y
> CONFIG_LIBCDIR=
>
> Here's what ucfront-ld says about that:
>
> FATAL: Could not determine libc. Are $CONFIG_DEFAULTS_LIBC_... and
> $CONFIG_LIBCDIR set correctly?
>
> Obviously in the LIBC_NONE case ucfront-ld doesn't have a lot to do, but
> one place it is used is when common/config.arch tests linker support for
> --fatal-warnings:
>
> ifeq "$(shell $(LD) --fatal-warnings 2>&1 | grep 'unrecogni.ed
> option')" ""
> # Linker warnings are almost always a sign of badness
> LDFLAGS += -Wl,--fatal-warnings
> endif
>
> With LIBC_NONE, ucfront-ld doesn't get as far as invoking $(CROSS)-ld -
> it just pukes about LIBCDIR.
>
> ucfront-ld assumes that if it's CONFIG_DEFAULTS_LIBC_NONE, then
> CONFIG_LIBCDIR should not be set. This is wrong, CONFIG_LIBCDIR is set,
> but empty. There's another error whereby it would pass an empty
> libdirectory on the command line, so we'd get
>
> $(LD) ... -L {nothing} ...
>
> which is also bogus.
>
> Attached patch seems to work OK here, but I couldn't actually find any
> dist apps that explicitly invoke the linker - all seem to do it via
> $(GCC). Any comments?
>
> Thanks,
>
> John
> Index: tools/ucfront/ucfront-ld.c
> ===================================================================
> --- tools/ucfront/ucfront-ld.c (revision 2231)
> +++ tools/ucfront/ucfront-ld.c (working copy)
> @@ -282,6 +282,9 @@
> x_asprintf(&libc_libdir, "%s/lib/%s", rootdir,
> config_libcdir);
> }
> }
> + else if (getenv("CONFIG_DEFAULTS_LIBC_NONE")) {
> + libtype = LIBTYPE_NONE;
> + }
> else {
> fatal("Could not determine libc. Are $CONFIG_DEFAULTS_LIBC_...
> and $CONFIG_LIBCDIR set correctly?");
> }
> @@ -325,8 +328,10 @@
> if (!nostdlib) {
> args_add(stripped_args, "-nostdlib");
>
> - args_add(stripped_args, "-L");
> - args_add(stripped_args, libc_libdir);
> + if(libc_libdir) {
> + args_add(stripped_args, "-L");
> + args_add(stripped_args, libc_libdir);
> + }
>
> x_asprintf(&e, "%s/lib", rootdir);
> args_add(stripped_args, "-L");
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--
David McCullough, [EMAIL PROTECTED], Ph:+61 734352815
Secure Computing - SnapGear http://www.uCdot.org http://www.cyberguard.com
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