u-boot/board/bf533-ezkit/Makefile

#
# U-boot - Makefile
#
# Copyright (c) 2005-2007 Analog Device Inc.
#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#

include $(TOPDIR)/config.mk

LIB	= $(obj)lib$(BOARD).o

COBJS-y	:= $(BOARD).o flash.o

SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS	:= $(addprefix $(obj),$(COBJS-y))
SOBJS	:= $(addprefix $(obj),$(SOBJS-y))

$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
	$(call cmd_link_o_target, $(OBJS) $(SOBJS))

clean:
	rm -f $(SOBJS) $(OBJS)

distclean:	clean
	rm -f $(LIB) core *.bak $(obj).depend

#########################################################################

# defines $(obj).depend target
include $(SRCTREE)/rules.mk

sinclude $(obj).depend

#########################################################################
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00			`#`
			`# U-boot - Makefile`
			`#`
[Blackfin][PATCH] Fix copyright and update license 2007-04-05 10:31:18 +00:00			`# Copyright (c) 2005-2007 Analog Device Inc.`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00			`#`
[Blackfin][PATCH] code cleanup 2007-03-10 15:49:29 +00:00			`# (C) Copyright 2000-2006`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00			`# Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
			`#`
			`# See file CREDITS for list of people who contributed to this`
			`# project.`
			`#`
			`# This program is free software; you can redistribute it and/or`
			`# modify it under the terms of the GNU General Public License as`
			`# published by the Free Software Foundation; either version 2 of`
			`# the License, or (at your option) any later version.`
			`#`
			`# This program is distributed in the hope that it will be useful,`
			`# but WITHOUT ANY WARRANTY; without even the implied warranty of`
			`# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
			`# GNU General Public License for more details.`
			`#`
			`# You should have received a copy of the GNU General Public License`
			`# along with this program; if not, write to the Free Software`
			`# Foundation, Inc., 59 Temple Place, Suite 330, Boston,`
			`# MA 02111-1307 USA`
			`#`

			`include $(TOPDIR)/config.mk`

Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`LIB = $(obj)lib$(BOARD).o`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00
Blackfin: convert old boards to use COBJS-y Makefile style Signed-off-by: Mike Frysinger <vapier@gentoo.org> 2008-10-13 02:09:26 +00:00			`COBJS-y := $(BOARD).o flash.o`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00
Blackfin: convert old boards to use COBJS-y Makefile style Signed-off-by: Mike Frysinger <vapier@gentoo.org> 2008-10-13 02:09:26 +00:00			`SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)`
			`OBJS := $(addprefix $(obj),$(COBJS-y))`
			`SOBJS := $(addprefix $(obj),$(SOBJS-y))`
[Blackfin][PATCH] Fix BUILD_DIR option of MAKEALL building issue 2007-03-11 17:42:06 +00:00
Blackfin: unify u-boot linker scripts All the Blackfin linker scripts were duplicated across the board dirs with no difference save from the semi-often used ENV_IS_EMBEDDED option. So unify all of them in the lib_blackfin/ dir and for the few boards that need to embedded the environment directly, add a LDS_BOARD_TEXT define for them to customize via their board config file. This is much simpler than forcing them to duplicate the rest of the linker script. Signed-off-by: Mike Frysinger <vapier@gentoo.org> 2009-06-14 10:29:07 +00:00			`$(LIB): $(obj).depend $(OBJS) $(SOBJS)`
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`$(call cmd_link_o_target, $(OBJS) $(SOBJS))`
Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00
[Blackfin][PATCH] Fix BUILD_DIR option of MAKEALL building issue 2007-03-11 17:42:06 +00:00			`clean:`
			`rm -f $(SOBJS) $(OBJS)`

			`distclean: clean`
Cleanup out-or-tree building for some boards (.depend) Signed-off-by: Wolfgang Denk <wd@denx.de> 2008-07-02 21:49:18 +00:00			`rm -f $(LIB) core *.bak $(obj).depend`
[Blackfin][PATCH] Fix BUILD_DIR option of MAKEALL building issue 2007-03-11 17:42:06 +00:00
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00			`#########################################################################`

[Blackfin][PATCH] Fix BUILD_DIR option of MAKEALL building issue 2007-03-11 17:42:06 +00:00			`# defines $(obj).depend target`
			`include $(SRCTREE)/rules.mk`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00
[Blackfin][PATCH] Fix BUILD_DIR option of MAKEALL building issue 2007-03-11 17:42:06 +00:00			`sinclude $(obj).depend`
Add missing Blackfin files. 2006-03-12 01:12:27 +00:00
			`#########################################################################`