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Sometimes it is required to build only host U-Boot tools without building
U-Boot itself for either board.
For example:
* In "buildroot" "uboot-tools" could be built for host just to have an ability
to create uImage.
* Linux distributions ship "mkimage" utility as a separate substance.
This patch allows building host U-Boot tools separately from U-Boot itself and
what is more important user only needs to have host compiler (gcc).
To build host tools just execute:
=====
make tools HOST_TOOLS_ONLY=yes
=====
Without this patch to generate tools user needs:
1. Configure any existing board with "make XXX_config"
2. Execute tools building but still cross-compiler will be invoked and if
there's no proper cross-compiler in PATH compilation will fail.
Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Masahiro Yamada <yamada.m at jp.panasonic.com>
Cc: Tom Rini <trini at ti.com>
Cc: Simon Glass <sjg at chromium.org>
--- u-boot-2014.07.orig/Makefile 2014-07-14 19:16:45.000000000 +0200
+++ u-boot-2014.07/Makefile 2014-08-11 10:06:13.315946952 +0200
@@ -483,9 +483,12 @@ ifeq ($(dot-config),1)
# load other configuration
include $(srctree)/config.mk
+# Don't check for config.mk presence if building host tools only
+ifneq ($(HOST_TOOLS_ONLY),yes)
ifeq ($(wildcard include/config.mk),)
$(error "System not configured - see README")
endif
+endif
# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
# that (or fail if absent). Otherwise, search for a linker script in a
@@ -1055,10 +1058,14 @@ ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
@/bin/false
endif
endif
+
+# Don't check for ldscript presence if building host tools only
+ifneq ($(HOST_TOOLS_ONLY),yes)
ifeq ($(wildcard $(LDSCRIPT)),)
@echo >&2 " Could not find linker script."
@/bin/false
endif
+endif
archprepare: prepare1 scripts_basic
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