package/binutils-bare-metal: add multiple tuple support

Add support to binutils-bare-metal to support multiple architecture tuples
with the BR2_TOOLCHAIN_BARE_METAL_BUILDROOT_ARCH string.

To do this, custom configure, build and install commands are needed, so that
each step goes through a loop of the architecture tuples in the list.

To keep consistency with autotools, all the relevant host configurations have
been copied into the HOST_BINUTILS_BARE_METAL_CONF_OPTS while removing any
configurations that do not apply to binutils and removing redundant configs.

autotools redundant configs covered by $(HOST_CONFIGURE_OPTS):
	CFLAGS="$$(HOST_CFLAGS)"
	LDFLAGS="$$(HOST_LDFLAGS)"

autotools configs not applicable to binutils:
	--disable-gtk-doc
	--disable-gtk-doc-html
	--disable-doc
	--disable-docs
	--disable-documentation
	--disable-debug
	--with-xmlto=no
	--with-fop=no
	--disable-nls

One of the configurations already in the binutils-bare-metal package was not
needed.

--enable-static -> handled by --disable-shared

Signed-off-by: Neal Frager <neal.frager@amd.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

package/binutils-bare-metal/binutils-bare-metal.mk

@@ -22,13 +22,45 @@ HOST_BINUTILS_BARE_METAL_MAKE_OPTS += MAKEINFO=true
 HOST_BINUTILS_BARE_METAL_INSTALL_OPTS += MAKEINFO=true install
 
 HOST_BINUTILS_BARE_METAL_CONF_OPTS = \
-	--target=$(TOOLCHAIN_BARE_METAL_BUILDROOT_ARCH_TUPLE) \
+	--prefix=$(HOST_DIR) \
+	--sysconfdir=$(HOST_DIR)/etc \
+	--localstatedir=$(HOST_DIR)/var \
+	$(if $$($$(PKG)_OVERRIDE_SRCDIR),,--disable-dependency-tracking) \
+	$(QUIET) \
 	--disable-gprof \
 	--disable-shared \
 	--enable-lto \
-	--enable-static \
 	--disable-initfini-array \
 	--disable-multilib \
 	--disable-werror
 
+define HOST_BINUTILS_BARE_METAL_CONFIGURE_CMDS
+	$(foreach arch_tuple, $(TOOLCHAIN_BARE_METAL_BUILDROOT_ARCH_TUPLE), \
+		mkdir -p $(@D)/build-$(arch_tuple) && \
+		cd $(@D)/build-$(arch_tuple) && \
+		$(HOST_CONFIGURE_OPTS) \
+		$(HOST_BINUTILS_BARE_METAL_CONF_ENV) \
+		CONFIG_SITE=/dev/null \
+		$(@D)/configure \
+			$(HOST_BINUTILS_BARE_METAL_CONF_OPTS) \
+			--target=$(arch_tuple)
+	)
+endef
+
+define HOST_BINUTILS_BARE_METAL_BUILD_CMDS
+	$(foreach arch_tuple, $(TOOLCHAIN_BARE_METAL_BUILDROOT_ARCH_TUPLE), \
+		$(HOST_MAKE_ENV) $(MAKE) \
+			$(HOST_BINUTILS_BARE_METAL_MAKE_OPTS) \
+			-C $(@D)/build-$(arch_tuple)
+	)
+endef
+
+define HOST_BINUTILS_BARE_METAL_INSTALL_CMDS
+	$(foreach arch_tuple, $(TOOLCHAIN_BARE_METAL_BUILDROOT_ARCH_TUPLE), \
+		$(HOST_MAKE_ENV) $(MAKE) \
+			$(HOST_BINUTILS_BARE_METAL_INSTALL_OPTS) \
+			-C $(@D)/build-$(arch_tuple)
+	)
+endef
+
 $(eval $(host-autotools-package))