[PATCH 2/9] libc: add rule to generate ucontext_i.{c, h, s} files and clean them

[Bernhard Reutner-Fischer]

On 31 December 2012 15:38, Florian Fainelli <florian at openwrt.org> wrote:
> This patch adds the required rules to generate the ucontext_i.{c,h,s}
> files from the architecture specific ucontext_i.sym file. Such files are
> required to properly support user-space context functions
> ({get,set,swap,make}context), and as such is made conditional on
> UCLIBC_HAS_CONTEXT_FUNCS.
>
> Signed-off-by: Florian Fainelli <florian at openwrt.org>
> ---
>  libc/sysdeps/linux/Makefile.commonarch |   18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>
> diff --git a/libc/sysdeps/linux/Makefile.commonarch b/libc/sysdeps/linux/Makefile.commonarch
> index c1bc5df..36f2eb0 100644
> --- a/libc/sysdeps/linux/Makefile.commonarch
> +++ b/libc/sysdeps/linux/Makefile.commonarch
> @@ -39,3 +39,21 @@ HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)):
>         $(do_rm) $(ARCH_HEADERS_OUT)
>
>  endif
> +
> +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
> +CFLAGS-ucontext_i.c = -S
> +
> +$(ARCH_OUT)/ucontext_i.c: $(ARCH_DIR)/ucontext_i.sym
> +       $(do_awk) $(top_srcdir)extra/scripts/gen-as-const.awk $< > $@
> +
> +$(ARCH_OUT)/ucontext_i.s: $(ARCH_OUT)/ucontext_i.c
> +       $(compile.c)
> +
> +$(ARCH_OUT)/ucontext_i.h: $(ARCH_OUT)/ucontext_i.s
> +       $(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@

This looks like it should use PTHREAD_GENERATE_MANGLE
> +
> +libc_arch_headers: $(ARCH_OUT)/ucontext_i.h

Is there a chance that we can put that into pregen-headers-y ?
> +
> +libc_arch_headers_clean:
> +       $(do_rm) $(addprefix $(ARCH_OUT)/ucontext_i., c h s)
> +endif