# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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PWD := $(shell pwd)
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CHOST := $(shell gcc -dumpmachine)
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HOST_ARCH := $(firstword $(subst -, ,$(CHOST)))
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ifneq (,$(ARCH))
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CBUILD := $(subst -gcc,,$(lastword $(subst /, ,$(firstword $(wildcard $(foreach bindir,$(subst :, ,$(PATH)),$(bindir)/$(ARCH)-*-gcc))))))
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ifeq (,$(CBUILD))
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$(error The toolchain for $(ARCH) is not installed)
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endif
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else
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CBUILD := $(CHOST)
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ARCH := $(firstword $(subst -, ,$(CBUILD)))
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endif
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# Set these from the environment to override
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KERNEL_PATH ?= $(PWD)/../../../../..
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BUILD_PATH ?= $(PWD)/build/$(ARCH)
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DISTFILES_PATH ?= $(PWD)/distfiles
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NR_CPUS ?= 4
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MIRROR := https://download.wireguard.com/qemu-test/distfiles/
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default: qemu
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# variable name, tarball project name, version, tarball extension, default URI base
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define tar_download =
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$(1)_VERSION := $(3)
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$(1)_NAME := $(2)-$$($(1)_VERSION)
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$(1)_TAR := $(DISTFILES_PATH)/$$($(1)_NAME)$(4)
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$(1)_PATH := $(BUILD_PATH)/$$($(1)_NAME)
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$(call file_download,$$($(1)_NAME)$(4),$(5),$(6))
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endef
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define file_download =
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$(DISTFILES_PATH)/$(1):
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mkdir -p $(DISTFILES_PATH)
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flock -x $$@.lock -c '[ -f $$@ ] && exit 0; wget -O $$@.tmp $(MIRROR)$(1) || wget -O $$@.tmp $(2)$(1) || rm -f $$@.tmp; [ -f $$@.tmp ] || exit 1; if echo "$(3) $$@.tmp" | sha256sum -c -; then mv $$@.tmp $$@; else rm -f $$@.tmp; exit 71; fi'
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endef
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$(eval $(call tar_download,MUSL,musl,1.1.24,.tar.gz,https://www.musl-libc.org/releases/,1370c9a812b2cf2a7d92802510cca0058cc37e66a7bedd70051f0a34015022a3))
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$(eval $(call tar_download,IPERF,iperf,3.7,.tar.gz,https://downloads.es.net/pub/iperf/,d846040224317caf2f75c843d309a950a7db23f9b44b94688ccbe557d6d1710c))
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$(eval $(call tar_download,BASH,bash,5.0,.tar.gz,https://ftp.gnu.org/gnu/bash/,b4a80f2ac66170b2913efbfb9f2594f1f76c7b1afd11f799e22035d63077fb4d))
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$(eval $(call tar_download,IPROUTE2,iproute2,5.6.0,.tar.xz,https://www.kernel.org/pub/linux/utils/net/iproute2/,1b5b0e25ce6e23da7526ea1da044e814ad85ba761b10dd29c2b027c056b04692))
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$(eval $(call tar_download,IPTABLES,iptables,1.8.4,.tar.bz2,https://www.netfilter.org/projects/iptables/files/,993a3a5490a544c2cbf2ef15cf7e7ed21af1845baf228318d5c36ef8827e157c))
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$(eval $(call tar_download,NMAP,nmap,7.80,.tar.bz2,https://nmap.org/dist/,fcfa5a0e42099e12e4bf7a68ebe6fde05553383a682e816a7ec9256ab4773faa))
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$(eval $(call tar_download,IPUTILS,iputils,s20190709,.tar.gz,https://github.com/iputils/iputils/archive/s20190709.tar.gz/#,a15720dd741d7538dd2645f9f516d193636ae4300ff7dbc8bfca757bf166490a))
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$(eval $(call tar_download,WIREGUARD_TOOLS,wireguard-tools,1.0.20200206,.tar.xz,https://git.zx2c4.com/wireguard-tools/snapshot/,f5207248c6a3c3e3bfc9ab30b91c1897b00802ed861e1f9faaed873366078c64))
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KERNEL_BUILD_PATH := $(BUILD_PATH)/kernel$(if $(findstring yes,$(DEBUG_KERNEL)),-debug)
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rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
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WIREGUARD_SOURCES := $(call rwildcard,$(KERNEL_PATH)/drivers/net/wireguard/,*)
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export CFLAGS ?= -O3 -pipe
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export LDFLAGS ?=
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export CPPFLAGS := -I$(BUILD_PATH)/include
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ifeq ($(HOST_ARCH),$(ARCH))
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CROSS_COMPILE_FLAG := --host=$(CHOST)
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CFLAGS += -march=native
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STRIP := strip
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else
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$(info Cross compilation: building for $(CBUILD) using $(CHOST))
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CROSS_COMPILE_FLAG := --build=$(CBUILD) --host=$(CHOST)
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export CROSS_COMPILE=$(CBUILD)-
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STRIP := $(CBUILD)-strip
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endif
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ifeq ($(ARCH),aarch64)
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QEMU_ARCH := aarch64
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KERNEL_ARCH := arm64
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
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else
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QEMU_MACHINE := -cpu cortex-a53 -machine virt
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CFLAGS += -march=armv8-a -mtune=cortex-a53
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endif
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else ifeq ($(ARCH),aarch64_be)
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QEMU_ARCH := aarch64
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KERNEL_ARCH := arm64
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
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else
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QEMU_MACHINE := -cpu cortex-a53 -machine virt
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CFLAGS += -march=armv8-a -mtune=cortex-a53
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endif
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else ifeq ($(ARCH),arm)
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QEMU_ARCH := arm
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KERNEL_ARCH := arm
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
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else
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QEMU_MACHINE := -cpu cortex-a15 -machine virt
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CFLAGS += -march=armv7-a -mtune=cortex-a15 -mabi=aapcs-linux
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endif
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else ifeq ($(ARCH),armeb)
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QEMU_ARCH := arm
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KERNEL_ARCH := arm
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
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else
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QEMU_MACHINE := -cpu cortex-a15 -machine virt
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CFLAGS += -march=armv7-a -mabi=aapcs-linux # We don't pass -mtune=cortex-a15 due to a compiler bug on big endian.
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LDFLAGS += -Wl,--be8
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endif
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else ifeq ($(ARCH),x86_64)
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QEMU_ARCH := x86_64
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KERNEL_ARCH := x86_64
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine q35,accel=kvm
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else
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QEMU_MACHINE := -cpu Skylake-Server -machine q35
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CFLAGS += -march=skylake-avx512
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endif
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else ifeq ($(ARCH),i686)
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QEMU_ARCH := i386
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KERNEL_ARCH := x86
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
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ifeq ($(subst x86_64,i686,$(HOST_ARCH)),$(ARCH))
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QEMU_MACHINE := -cpu host -machine q35,accel=kvm
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else
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QEMU_MACHINE := -cpu coreduo -machine q35
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CFLAGS += -march=prescott
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endif
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else ifeq ($(ARCH),mips64)
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QEMU_ARCH := mips64
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KERNEL_ARCH := mips
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine malta,accel=kvm
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CFLAGS += -EB
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else
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QEMU_MACHINE := -cpu MIPS64R2-generic -machine malta -smp 1
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CFLAGS += -march=mips64r2 -EB
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endif
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else ifeq ($(ARCH),mips64el)
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QEMU_ARCH := mips64el
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KERNEL_ARCH := mips
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine malta,accel=kvm
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CFLAGS += -EL
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else
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QEMU_MACHINE := -cpu MIPS64R2-generic -machine malta -smp 1
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CFLAGS += -march=mips64r2 -EL
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endif
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else ifeq ($(ARCH),mips)
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QEMU_ARCH := mips
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KERNEL_ARCH := mips
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine malta,accel=kvm
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CFLAGS += -EB
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else
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QEMU_MACHINE := -cpu 24Kf -machine malta -smp 1
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CFLAGS += -march=mips32r2 -EB
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endif
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else ifeq ($(ARCH),mipsel)
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QEMU_ARCH := mipsel
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KERNEL_ARCH := mips
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host -machine malta,accel=kvm
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CFLAGS += -EL
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else
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QEMU_MACHINE := -cpu 24Kf -machine malta -smp 1
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CFLAGS += -march=mips32r2 -EL
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endif
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else ifeq ($(ARCH),powerpc64le)
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QEMU_ARCH := ppc64
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KERNEL_ARCH := powerpc
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host,accel=kvm -machine pseries
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else
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QEMU_MACHINE := -machine pseries
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endif
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CFLAGS += -mcpu=powerpc64le -mlong-double-64
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else ifeq ($(ARCH),powerpc)
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QEMU_ARCH := ppc
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KERNEL_ARCH := powerpc
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/powerpc/boot/uImage
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host,accel=kvm -machine ppce500
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else
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QEMU_MACHINE := -machine ppce500
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endif
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CFLAGS += -mcpu=powerpc -mlong-double-64 -msecure-plt
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else ifeq ($(ARCH),m68k)
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QEMU_ARCH := m68k
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KERNEL_ARCH := m68k
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KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
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KERNEL_CMDLINE := $(shell sed -n 's/CONFIG_CMDLINE=\(.*\)/\1/p' arch/m68k.config)
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ifeq ($(HOST_ARCH),$(ARCH))
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QEMU_MACHINE := -cpu host,accel=kvm -machine q800 -smp 1 -append $(KERNEL_CMDLINE)
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else
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QEMU_MACHINE := -machine q800 -smp 1 -append $(KERNEL_CMDLINE)
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endif
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else
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$(error I only build: x86_64, i686, arm, armeb, aarch64, aarch64_be, mips, mipsel, mips64, mips64el, powerpc64le, powerpc, m68k)
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endif
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REAL_CC := $(CBUILD)-gcc
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MUSL_CC := $(BUILD_PATH)/musl-gcc
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export CC := $(MUSL_CC)
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USERSPACE_DEPS := $(MUSL_CC) $(BUILD_PATH)/include/.installed $(BUILD_PATH)/include/linux/.installed
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build: $(KERNEL_BZIMAGE)
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qemu: $(KERNEL_BZIMAGE)
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rm -f $(BUILD_PATH)/result
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timeout --foreground 20m qemu-system-$(QEMU_ARCH) \
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-nodefaults \
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-nographic \
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-smp $(NR_CPUS) \
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$(QEMU_MACHINE) \
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-m $$(grep -q CONFIG_DEBUG_KMEMLEAK=y $(KERNEL_BUILD_PATH)/.config && echo 1G || echo 256M) \
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-serial stdio \
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-serial file:$(BUILD_PATH)/result \
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-no-reboot \
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-monitor none \
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-kernel $<
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grep -Fq success $(BUILD_PATH)/result
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$(BUILD_PATH)/init-cpio-spec.txt:
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mkdir -p $(BUILD_PATH)
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echo "file /init $(BUILD_PATH)/init 755 0 0" > $@
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echo "file /init.sh $(PWD)/../netns.sh 755 0 0" >> $@
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echo "dir /dev 755 0 0" >> $@
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echo "nod /dev/console 644 0 0 c 5 1" >> $@
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echo "dir /bin 755 0 0" >> $@
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echo "file /bin/iperf3 $(IPERF_PATH)/src/iperf3 755 0 0" >> $@
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echo "file /bin/wg $(WIREGUARD_TOOLS_PATH)/src/wg 755 0 0" >> $@
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echo "file /bin/bash $(BASH_PATH)/bash 755 0 0" >> $@
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echo "file /bin/ip $(IPROUTE2_PATH)/ip/ip 755 0 0" >> $@
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echo "file /bin/ss $(IPROUTE2_PATH)/misc/ss 755 0 0" >> $@
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echo "file /bin/ping $(IPUTILS_PATH)/ping 755 0 0" >> $@
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echo "file /bin/ncat $(NMAP_PATH)/ncat/ncat 755 0 0" >> $@
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echo "file /bin/xtables-legacy-multi $(IPTABLES_PATH)/iptables/xtables-legacy-multi 755 0 0" >> $@
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echo "slink /bin/iptables xtables-legacy-multi 777 0 0" >> $@
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echo "slink /bin/ping6 ping 777 0 0" >> $@
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echo "dir /lib 755 0 0" >> $@
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echo "file /lib/libc.so $(MUSL_PATH)/lib/libc.so 755 0 0" >> $@
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echo "slink /lib/ld-linux.so.1 libc.so 777 0 0" >> $@
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$(KERNEL_BUILD_PATH)/.config: kernel.config arch/$(ARCH).config
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mkdir -p $(KERNEL_BUILD_PATH)
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cp kernel.config $(KERNEL_BUILD_PATH)/minimal.config
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printf 'CONFIG_NR_CPUS=$(NR_CPUS)\nCONFIG_INITRAMFS_SOURCE="$(BUILD_PATH)/init-cpio-spec.txt"\n' >> $(KERNEL_BUILD_PATH)/minimal.config
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cat arch/$(ARCH).config >> $(KERNEL_BUILD_PATH)/minimal.config
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$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) allnoconfig
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cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config $(KERNEL_BUILD_PATH)/minimal.config
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$(if $(findstring yes,$(DEBUG_KERNEL)),cp debug.config $(KERNEL_BUILD_PATH) && cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config debug.config,)
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$(KERNEL_BZIMAGE): $(KERNEL_BUILD_PATH)/.config $(BUILD_PATH)/init-cpio-spec.txt $(MUSL_PATH)/lib/libc.so $(IPERF_PATH)/src/iperf3 $(IPUTILS_PATH)/ping $(BASH_PATH)/bash $(IPROUTE2_PATH)/misc/ss $(IPROUTE2_PATH)/ip/ip $(IPTABLES_PATH)/iptables/xtables-legacy-multi $(NMAP_PATH)/ncat/ncat $(WIREGUARD_TOOLS_PATH)/src/wg $(BUILD_PATH)/init ../netns.sh $(WIREGUARD_SOURCES)
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$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE)
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$(BUILD_PATH)/include/linux/.installed: | $(KERNEL_BUILD_PATH)/.config
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$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) INSTALL_HDR_PATH=$(BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) headers_install
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touch $@
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$(MUSL_PATH)/lib/libc.so: $(MUSL_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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cd $(MUSL_PATH) && CC=$(REAL_CC) ./configure --prefix=/ --disable-static --build=$(CBUILD)
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$(MAKE) -C $(MUSL_PATH)
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$(STRIP) -s $@
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$(BUILD_PATH)/include/.installed: $(MUSL_PATH)/lib/libc.so
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$(MAKE) -C $(MUSL_PATH) DESTDIR=$(BUILD_PATH) install-headers
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touch $@
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$(MUSL_CC): $(MUSL_PATH)/lib/libc.so
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sh $(MUSL_PATH)/tools/musl-gcc.specs.sh $(BUILD_PATH)/include $(MUSL_PATH)/lib /lib/ld-linux.so.1 > $(BUILD_PATH)/musl-gcc.specs
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printf '#!/bin/sh\nexec "$(REAL_CC)" --specs="$(BUILD_PATH)/musl-gcc.specs" "$$@"\n' > $(BUILD_PATH)/musl-gcc
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chmod +x $(BUILD_PATH)/musl-gcc
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$(IPERF_PATH)/.installed: $(IPERF_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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sed -i '1s/^/#include <stdint.h>/' $(IPERF_PATH)/src/cjson.h $(IPERF_PATH)/src/timer.h
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sed -i -r 's/-p?g//g' $(IPERF_PATH)/src/Makefile*
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touch $@
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$(IPERF_PATH)/src/iperf3: | $(IPERF_PATH)/.installed $(USERSPACE_DEPS)
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cd $(IPERF_PATH) && CFLAGS="$(CFLAGS) -D_GNU_SOURCE" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --with-openssl=no
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$(MAKE) -C $(IPERF_PATH)
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$(STRIP) -s $@
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$(WIREGUARD_TOOLS_PATH)/.installed: $(WIREGUARD_TOOLS_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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touch $@
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$(WIREGUARD_TOOLS_PATH)/src/wg: | $(WIREGUARD_TOOLS_PATH)/.installed $(USERSPACE_DEPS)
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$(MAKE) -C $(WIREGUARD_TOOLS_PATH)/src wg
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$(STRIP) -s $@
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$(BUILD_PATH)/init: init.c | $(USERSPACE_DEPS)
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mkdir -p $(BUILD_PATH)
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$(MUSL_CC) -o $@ $(CFLAGS) $(LDFLAGS) -std=gnu11 $<
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$(STRIP) -s $@
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$(IPUTILS_PATH)/.installed: $(IPUTILS_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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touch $@
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$(IPUTILS_PATH)/ping: | $(IPUTILS_PATH)/.installed $(USERSPACE_DEPS)
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sed -i /atexit/d $(IPUTILS_PATH)/ping.c
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cd $(IPUTILS_PATH) && $(CC) $(CFLAGS) -std=c99 -o $@ ping.c ping_common.c ping6_common.c iputils_common.c -D_GNU_SOURCE -D'IPUTILS_VERSION(f)=f' -lresolv $(LDFLAGS)
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$(STRIP) -s $@
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$(BASH_PATH)/.installed: $(BASH_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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touch $@
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$(BASH_PATH)/bash: | $(BASH_PATH)/.installed $(USERSPACE_DEPS)
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cd $(BASH_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --without-bash-malloc --disable-debugger --disable-help-builtin --disable-history --disable-multibyte --disable-progcomp --disable-readline --disable-mem-scramble
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$(MAKE) -C $(BASH_PATH)
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$(STRIP) -s $@
|
|
$(IPROUTE2_PATH)/.installed: $(IPROUTE2_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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printf 'CC:=$(CC)\nPKG_CONFIG:=pkg-config\nTC_CONFIG_XT:=n\nTC_CONFIG_ATM:=n\nTC_CONFIG_IPSET:=n\nIP_CONFIG_SETNS:=y\nHAVE_ELF:=n\nHAVE_MNL:=n\nHAVE_BERKELEY_DB:=n\nHAVE_LATEX:=n\nHAVE_PDFLATEX:=n\nCFLAGS+=-DHAVE_SETNS\n' > $(IPROUTE2_PATH)/config.mk
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printf 'lib: snapshot\n\t$$(MAKE) -C lib\nip/ip: lib\n\t$$(MAKE) -C ip ip\nmisc/ss: lib\n\t$$(MAKE) -C misc ss\n' >> $(IPROUTE2_PATH)/Makefile
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touch $@
|
|
$(IPROUTE2_PATH)/ip/ip: | $(IPROUTE2_PATH)/.installed $(USERSPACE_DEPS)
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$(MAKE) -C $(IPROUTE2_PATH) PREFIX=/ ip/ip
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$(STRIP) -s $@
|
|
$(IPROUTE2_PATH)/misc/ss: | $(IPROUTE2_PATH)/.installed $(USERSPACE_DEPS)
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$(MAKE) -C $(IPROUTE2_PATH) PREFIX=/ misc/ss
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$(STRIP) -s $@
|
|
$(IPTABLES_PATH)/.installed: $(IPTABLES_TAR)
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mkdir -p $(BUILD_PATH)
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flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
|
sed -i -e "/nfnetlink=[01]/s:=[01]:=0:" -e "/nfconntrack=[01]/s:=[01]:=0:" $(IPTABLES_PATH)/configure
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touch $@
|
|
$(IPTABLES_PATH)/iptables/xtables-legacy-multi: | $(IPTABLES_PATH)/.installed $(USERSPACE_DEPS)
|
cd $(IPTABLES_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --disable-nftables --disable-bpf-compiler --disable-nfsynproxy --disable-libipq --disable-connlabel --with-kernel=$(BUILD_PATH)/include
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$(MAKE) -C $(IPTABLES_PATH)
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$(STRIP) -s $@
|
|
$(NMAP_PATH)/.installed: $(NMAP_TAR)
|
mkdir -p $(BUILD_PATH)
|
flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
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touch $@
|
|
$(NMAP_PATH)/ncat/ncat: | $(NMAP_PATH)/.installed $(USERSPACE_DEPS)
|
cd $(NMAP_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --without-ndiff --without-zenmap --without-nping --with-libpcap=included --with-libpcre=included --with-libdnet=included --without-liblua --with-liblinear=included --without-nmap-update --without-openssl --with-pcap=linux --without-libssh
|
$(MAKE) -C $(NMAP_PATH)/libpcap
|
$(MAKE) -C $(NMAP_PATH)/ncat
|
$(STRIP) -s $@
|
|
clean:
|
rm -rf $(BUILD_PATH)
|
|
distclean: clean
|
rm -rf $(DISTFILES_PATH)
|
|
menuconfig: $(KERNEL_BUILD_PATH)/.config
|
$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) menuconfig
|
|
.PHONY: qemu build clean distclean menuconfig
|
.DELETE_ON_ERROR:
|
