51f5f62754
Improve external toolchain support
* Do not put kernel-headers in the dependencies of BASE_TARGETS in
the case where BR2_TOOLCHAIN_SOURCE is not y. The kernel headers
are already supposed to be part of the external toolchain, so
there's no need to download, extract and install them.
* In the configuration system, don't display the kernel headers
version selection list when an external toolchain is selected. This
is implemented by moving the source
"toolchain/kernel-headers/Config.in" inside the if
BR2_TOOLCHAIN_SOURCE in toolchain/Config.in.2.
* Change the description and help message of the BR2_LARGEFILE,
BR2_INET_IPV6, BR2_INET_RPC, and BR2_SOFT_FLOAT option in
toolchain/external-toolchain/Config.in. In the case of an external
toolchain, the semantic of these options is not to enable large
file support, IPV6 or RPC (since the toolchain is already compiled,
it has been decided previously). Their semantic is to let Buildroot
know about the characteristics of the external toolchain being
used.
As an improvement, we could guess these values automatically:
- for BR2_LARGEFILE, look at the value of __UCLIBC_HAS_LFS__ in
bits/uClibc_config.h in the libc headers directory.
- for BR2_INET_RPC, look at the value of __UCLIBC_HAS_RPC__ in the
same file
- for BR2_INET_IPV6, look at the value of __UCLIBC_HAS_IPV6__ in
the same file
- for BR2_SOFT_FLOAT, look at the output of $(CC) -v 2>&1 | grep
-- "--with-float=soft"
But I'm not sure how this would be possible, since these values are
used at configuration-time by other configuration options, not only
at build time.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
516 lines
15 KiB
Makefile
516 lines
15 KiB
Makefile
# Makefile for buildroot2
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#
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# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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#--------------------------------------------------------------
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# Just run 'make menuconfig', configure stuff, then run 'make'.
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# You shouldn't need to mess with anything beyond this point...
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#--------------------------------------------------------------
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TOPDIR=./
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CONFIG_CONFIG_IN=Config.in
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CONFIG_DEFCONFIG=.defconfig
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CONFIG=package/config
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DATE:=$(shell date +%Y%m%d)
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noconfig_targets:=menuconfig config oldconfig randconfig \
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defconfig allyesconfig allnoconfig release tags \
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source-check help
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# Use shell variables, if defined
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ifneq ($(BUILDROOT_LOCAL),)
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BR2_LOCAL:=$(BUILDROOT_LOCAL)
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else
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BR2_LOCAL:=$(TOPDIR)/local
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endif
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# $(shell find . -name *_defconfig |sed 's/.*\///')
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# Pull in the user's configuration file
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ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
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ifeq ($(BOARD),)
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# if "make BOARD=xyz" command
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-include .config
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else
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# if "make" command
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-include $(BR2_LOCAL)/$(BOARD)/$(BOARD).config
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endif
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endif
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# Override BR2_DL_DIR if shell variable defined
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ifneq ($(BUILDROOT_DL_DIR),)
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BR2_DL_DIR:=$(BUILDROOT_DL_DIR)
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endif
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LOCAL:=$(BR2_LOCAL)
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# To put more focus on warnings, be less verbose as default
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# Use 'make V=1' to see the full commands
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ifdef V
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ifeq ("$(origin V)", "command line")
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KBUILD_VERBOSE=$(V)
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endif
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endif
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ifndef KBUILD_VERBOSE
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KBUILD_VERBOSE=0
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endif
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ifeq ($(KBUILD_VERBOSE),1)
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quiet=
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Q=
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ifndef VERBOSE
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VERBOSE=1
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endif
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else
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quiet=quiet_
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Q=@
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endif
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CONFIG_SHELL:=$(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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else if [ -x /bin/bash ]; then echo /bin/bash; \
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else echo sh; fi; fi)
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export CONFIG_SHELL quiet Q KBUILD_VERBOSE VERBOSE
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ifndef HOSTAR
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HOSTAR:=ar
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endif
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ifndef HOSTAS
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HOSTAS:=as
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endif
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ifndef HOSTCC
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HOSTCC:=gcc
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else
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endif
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ifndef HOSTCXX
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HOSTCXX:=g++
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endif
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ifndef HOSTFC
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HOSTFC:=gfortran
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endif
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ifndef HOSTCPP
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HOSTCPP:=cpp
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endif
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ifndef HOSTLD
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HOSTLD:=ld
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endif
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ifndef HOSTLN
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HOSTLN:=ln
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endif
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ifndef HOSTNM
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HOSTNM:=nm
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endif
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HOSTAR:=$(shell $(CONFIG_SHELL) -c "which $(HOSTAR)" || type -p $(HOSTAR) || echo ar)
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HOSTAS:=$(shell $(CONFIG_SHELL) -c "which $(HOSTAS)" || type -p $(HOSTAS) || echo as)
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HOSTCC:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCC)" || type -p $(HOSTCC) || echo gcc)
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HOSTCXX:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCXX)" || type -p $(HOSTCXX) || echo g++)
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HOSTFC:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLD)" || type -p $(HOSTLD) || echo || which g77 || type -p g77 || echo gfortran)
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HOSTCPP:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCPP)" || type -p $(HOSTCPP) || echo cpp)
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HOSTLD:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLD)" || type -p $(HOSTLD) || echo ld)
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HOSTLN:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLN)" || type -p $(HOSTLN) || echo ln)
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HOSTNM:=$(shell $(CONFIG_SHELL) -c "which $(HOSTNM)" || type -p $(HOSTNM) || echo nm)
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HOST_GLIB_BIN:=`dirname $(shell $(CONFIG_SHELL) -c "which glib-genmarshal" || echo /usr/bin/glib-genmarshal)`
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HOST_GLIB:=$(shell $(CONFIG_SHELL) -c "dirname $(HOST_GLIB_BIN)" || echo /usr)
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ifndef CFLAGS_FOR_BUILD
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CFLAGS_FOR_BUILD:=-g -O2
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endif
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ifndef CXXFLAGS_FOR_BUILD
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CXXFLAGS_FOR_BUILD:=-g -O2
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endif
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ifndef FCFLAGS_FOR_BUILD
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FCFLAGS_FOR_BUILD:=-g -O2
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endif
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export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTFC HOSTLD
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ifeq ($(BR2_HAVE_DOT_CONFIG),y)
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# cc-option
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# Usage: cflags-y+=$(call cc-option, -march=winchip-c6, -march=i586)
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# sets -march=winchip-c6 if supported else falls back to -march=i586
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# without checking the latter.
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cc-option=$(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
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> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
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#############################################################
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#
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# Hide troublesome environment variables from sub processes
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#
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#############################################################
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unexport CROSS_COMPILE
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unexport ARCH
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#############################################################
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#
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# Setup the proper filename extensions for the host
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#
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##############################################################
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ifneq ($(findstring linux,$(BR2_GNU_BUILD_SUFFIX)),)
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HOST_EXEEXT:=
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HOST_LIBEXT:=.a
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HOST_SHREXT:=.so
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endif
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ifneq ($(findstring apple,$(BR2_GNU_BUILD_SUFFIX)),)
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HOST_EXEEXT:=
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HOST_LIBEXT:=.a
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HOST_SHREXT:=.dylib
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endif
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ifneq ($(findstring cygwin,$(BR2_GNU_BUILD_SUFFIX)),)
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HOST_EXEEXT:=.exe
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HOST_LIBEXT:=.lib
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HOST_SHREXT:=.dll
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HOST_LOADLIBES="-lcurses -lintl"
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export HOST_LOADLIBES
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endif
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ifneq ($(findstring mingw,$(BR2_GNU_BUILD_SUFFIX)),)
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HOST_EXEEXT:=.exe
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HOST_LIBEXT:=.lib
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HOST_SHREXT:=.dll
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endif
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# The preferred type of libs we build for the target
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ifeq ($(BR2_PREFER_STATIC_LIB),y)
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LIBTGTEXT=.a
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#PREFERRED_LIB_FLAGS:=--disable-shared --enable-static
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else
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LIBTGTEXT=.so
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#PREFERRED_LIB_FLAGS:=--disable-static --enable-shared
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endif
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PREFERRED_LIB_FLAGS:=--enable-static --enable-shared
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##############################################################
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#
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# The list of stuff to build for the target toolchain
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# along with the packages to build for the target.
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#
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##############################################################
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ifeq ($(BR2_TOOLCHAIN_SOURCE),y)
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BASE_TARGETS:=uclibc-configured binutils cross_compiler uclibc-target-utils kernel-headers
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else
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BASE_TARGETS:=uclibc
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endif
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TARGETS:=
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# setup our pathes
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include project/Makefile.in
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BR2_DEPENDS_DIR=$(PROJECT_BUILD_DIR)/buildroot-config
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include toolchain/Makefile.in
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include package/Makefile.in
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#############################################################
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#
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# You should probably leave this stuff alone unless you know
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# what you are doing.
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#
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#############################################################
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all: world
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# In this section, we need .config
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include .config.cmd
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include project/*.mk
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# We also need the various per-package makefiles, which also add
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# each selected package to TARGETS if that package was selected
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# in the .config file.
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ifeq ($(BR2_TOOLCHAIN_SOURCE),y)
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# avoid pulling in external toolchain which is broken for toplvl parallel builds
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# Explicit ordering:
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include toolchain/dependencies/dependencies.mk
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include toolchain/binutils/binutils.mk
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include toolchain/ccache/ccache.mk
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include toolchain/elf2flt/elf2flt.mk
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include toolchain/gcc/gcc-uclibc-3.x.mk
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include toolchain/gcc/gcc-uclibc-4.x.mk
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include toolchain/gdb/gdb.mk
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include toolchain/kernel-headers/kernel-headers.mk
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include toolchain/mklibs/mklibs.mk
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include toolchain/sstrip/sstrip.mk
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include toolchain/uClibc/uclibc.mk
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else
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include toolchain/*/*.mk
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endif
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ifeq ($(BR2_PACKAGE_LINUX),y)
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TARGETS+=linux26-modules
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endif
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include package/*/*.mk
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TARGETS+=target-devfiles
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# target stuff is last so it can override anything else
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include target/Makefile.in
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TARGETS+=erase-fakeroots
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TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS))
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TARGETS_SOURCE:=$(patsubst %,%-source,$(TARGETS) $(BASE_TARGETS))
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TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))
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TARGETS_ALL:=$(patsubst %,__real_tgt_%,$(TARGETS))
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# all targets depend on the crosscompiler and it's prerequisites
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$(TARGETS_ALL): __real_tgt_%: $(BASE_TARGETS) %
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$(BR2_DEPENDS_DIR): .config
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rm -rf $@
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mkdir -p $(@D)
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cp -dpRf $(CONFIG)/buildroot-config $@
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dirs: $(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
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$(BR2_DEPENDS_DIR) \
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$(BINARIES_DIR) $(PROJECT_BUILD_DIR)
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$(BASE_TARGETS): dirs
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world: dependencies dirs target-host-info $(BASE_TARGETS) $(TARGETS_ALL)
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.PHONY: all world dirs clean dirclean distclean source \
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$(BASE_TARGETS) $(TARGETS) $(TARGETS_ALL) \
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$(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) \
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$(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
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$(BR2_DEPENDS_DIR) \
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$(BINARIES_DIR) $(PROJECT_BUILD_DIR)
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#############################################################
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#
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# staging and target directories do NOT list these as
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# dependencies anywhere else
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#
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#############################################################
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$(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) \
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$(PROJECT_BUILD_DIR) $(BINARIES_DIR):
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@mkdir -p $@
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$(STAGING_DIR):
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@mkdir -p $(STAGING_DIR)/bin
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@mkdir -p $(STAGING_DIR)/lib
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ifeq ($(BR2_TOOLCHAIN_SYSROOT),y)
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@mkdir -p $(STAGING_DIR)/usr/lib
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else
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ifneq ($(BR2_TOOLCHAIN_EXTERNAL),y)
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@ln -snf . $(STAGING_DIR)/usr
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@mkdir -p $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)
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@ln -snf ../lib $(STAGING_DIR)/usr/lib
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@ln -snf ../lib $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
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endif
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endif
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@mkdir -p $(STAGING_DIR)/usr/include
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$(PROJECT_BUILD_DIR)/.root:
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mkdir -p $(TARGET_DIR)
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if ! [ -d "$(TARGET_DIR)/bin" ]; then \
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if [ -d "$(TARGET_SKELETON)" ]; then \
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cp -fa $(TARGET_SKELETON)/* $(TARGET_DIR)/; \
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fi; \
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touch $(STAGING_DIR)/.fakeroot.00000; \
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fi
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-find $(TARGET_DIR) -type d -name CVS -o -name .svn | xargs rm -rf
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-find $(TARGET_DIR) -type f -name .empty | xargs rm -rf
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touch $@
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$(TARGET_DIR): $(PROJECT_BUILD_DIR)/.root
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erase-fakeroots:
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rm -f $(PROJECT_BUILD_DIR)/.fakeroot*
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target-devfiles:
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ifeq ($(BR2_HAVE_DEVFILES),y)
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( scripts/copy.sh $(STAGING_DIR) $(TARGET_DIR) )
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else
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rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/lib/pkgconfig
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find $(TARGET_DIR)/usr/lib -name '*.a' -delete
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find $(TARGET_DIR)/lib -name '*.a' -delete
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find $(TARGET_DIR)/usr/lib -name '*.la' -delete
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find $(TARGET_DIR)/lib -name '*.la' -delete
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endif
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source: $(TARGETS_SOURCE) $(HOST_SOURCE)
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_source-check:
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$(MAKE) SPIDER=--spider source
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external-deps:
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@$(MAKE) -Bs BR2_WGET=$(TOPDIR)/toolchain/wget-show-external-deps.sh \
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SPIDER=--spider source
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#############################################################
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#
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# Cleanup and misc junk
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#
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#############################################################
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clean: $(TARGETS_CLEAN)
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rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE) $(PROJECT_BUILD_DIR)/.root $(PROJECT_BUILD_DIR)/autotools-stamps
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dirclean: $(TARGETS_DIRCLEAN)
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rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE) $(PROJECT_BUILD_DIR)/.root $(PROJECT_BUILD_DIR)/autotools-stamps
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distclean:
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ifeq ($(DL_DIR),$(BASE_DIR)/dl)
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rm -rf $(DL_DIR)
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endif
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rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR) \
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$(LINUX_KERNEL) $(BASE_DIR)/include \
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.config.cmd
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$(MAKE) -C $(CONFIG) clean
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sourceball:
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rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR)
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set -e; \
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cd ..; \
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rm -f buildroot.tar.bz2; \
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tar -cvf buildroot.tar buildroot; \
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bzip2 -9 buildroot.tar; \
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else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
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all: menuconfig
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# configuration
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# ---------------------------------------------------------------------------
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HOSTCFLAGS=$(CFLAGS_FOR_BUILD)
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export HOSTCFLAGS
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$(CONFIG)/conf:
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@mkdir -p $(CONFIG)/buildroot-config
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$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf
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-@if [ ! -f .config ]; then \
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cp $(CONFIG_DEFCONFIG) .config; \
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fi
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$(CONFIG)/mconf:
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@mkdir -p $(CONFIG)/buildroot-config
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$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf mconf
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-@if [ ! -f .config ]; then \
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cp $(CONFIG_DEFCONFIG) .config; \
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fi
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menuconfig: $(CONFIG)/mconf
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@mkdir -p $(CONFIG)/buildroot-config
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@if ! KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/mconf $(CONFIG_CONFIG_IN); then \
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test -f .config.cmd || rm -f .config; \
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fi
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config: $(CONFIG)/conf
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf $(CONFIG_CONFIG_IN)
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oldconfig: $(CONFIG)/conf
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf -o $(CONFIG_CONFIG_IN)
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randconfig: $(CONFIG)/conf
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf -r $(CONFIG_CONFIG_IN)
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allyesconfig: $(CONFIG)/conf
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cat $(CONFIG_DEFCONFIG) > .config
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf -y $(CONFIG_CONFIG_IN)
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#sed -i -e "s/^CONFIG_DEBUG.*/# CONFIG_DEBUG is not set/" .config
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allnoconfig: $(CONFIG)/conf
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf -n $(CONFIG_CONFIG_IN)
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defconfig: $(CONFIG)/conf
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@mkdir -p $(CONFIG)/buildroot-config
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@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
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KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
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$(CONFIG)/conf -d $(CONFIG_CONFIG_IN)
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# check if download URLs are outdated
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source-check: allyesconfig
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$(MAKE) _source-check
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#############################################################
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#
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# Cleanup and misc junk
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#
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#############################################################
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clean:
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rm -f .config .config.old .config.cmd .tmpconfig.h .lognr.*
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-$(MAKE) -C $(CONFIG) clean
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distclean: clean
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rm -rf sources/*
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endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
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%_defconfig: $(CONFIG)/conf
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cp $(shell find ./target/ -name $@) .config
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-@$(MAKE) oldconfig
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|
update:
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|
cp .config $(BOARD_PATH)/$(BOARD_NAME)_defconfig
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configured: dirs host-sed kernel-headers uclibc-config busybox-config linux26-config
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prepatch: gcc-patched binutils-patched gdb-patched uclibc-patched
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.lognr.$(PROJECT):
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@echo "0" > .lognr.$(PROJECT)
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log: .lognr.$(PROJECT)
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@expr `cat .lognr.$(PROJECT)` + 1 > .lognr.$(PROJECT)
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@echo Creating $(PROJECT)-`cat .lognr.$(PROJECT)`.log
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@$(MAKE) > $(PROJECT)-`cat .lognr.$(PROJECT)`.log 2>&1
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|
|
|
|
|
cross: $(BASE_TARGETS)
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|
|
|
help:
|
|
@echo 'Cleaning:'
|
|
@echo ' clean - delete temporary files created by build'
|
|
@echo ' distclean - delete all non-source files (including .config)'
|
|
@echo
|
|
@echo 'Build:'
|
|
@echo ' all - make world'
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|
@echo
|
|
@echo 'Configuration:'
|
|
@echo ' menuconfig - interactive curses-based configurator'
|
|
@echo ' oldconfig - resolve any unresolved symbols in .config'
|
|
@echo
|
|
@echo 'Miscellaneous:'
|
|
@echo ' source - download all sources needed for offline-build'
|
|
@echo ' source-check - check all packages for valid download URLs'
|
|
@echo ' external-deps - list external packages used'
|
|
@echo
|
|
@echo 'See docs/README and docs/buildroot.html for further details'
|
|
@echo
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|
|
|
.PHONY: dummy subdirs release distclean clean config oldconfig \
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|
menuconfig tags check test depend defconfig help
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|
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