9000889da7
Qemu uses the host-python when building, but the .mk file is pointing the host-python interpreter to the target python site-packages, which is both incorrect and also unneeded. Qemu doesn't need any extra packages [1], so there's no need to provide this path. And indeed qemu builds fine when setting the path to a non-existent directory. Since target qemu neither depends on nor selects target python, it's quite possible to build qemu without a target python, in which case the supplied PYTHONPATH is a non-existent directory. But even if qemu did want a python package, pointing the host-python to the target site-packages will not work. The package could contain a compiled shared library for the target architecture that the host python can not load. This can be tested by adding "import numpy" to one of qemu's python scripts and observing target python-numpy failing to load when the script is run at build time. [1] https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01758.html "Avoid third-party package dependencies - QEMU currently has none!" Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
294 lines
7.9 KiB
Makefile
294 lines
7.9 KiB
Makefile
################################################################################
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#
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# qemu
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#
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################################################################################
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QEMU_VERSION = 3.1.0
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QEMU_SOURCE = qemu-$(QEMU_VERSION).tar.xz
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QEMU_SITE = http://download.qemu.org
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QEMU_LICENSE = GPL-2.0, LGPL-2.1, MIT, BSD-3-Clause, BSD-2-Clause, Others/BSD-1c
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QEMU_LICENSE_FILES = COPYING COPYING.LIB
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# NOTE: there is no top-level license file for non-(L)GPL licenses;
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# the non-(L)GPL license texts are specified in the affected
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# individual source files.
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#-------------------------------------------------------------
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# Target-qemu
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QEMU_DEPENDENCIES = host-pkgconf host-python libglib2 zlib pixman
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# Need the LIBS variable because librt and libm are
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# not automatically pulled. :-(
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QEMU_LIBS = -lrt -lm
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QEMU_OPTS =
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QEMU_VARS = \
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LIBTOOL=$(HOST_DIR)/bin/libtool \
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PYTHON=$(HOST_DIR)/bin/python2
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# If we want to specify only a subset of targets, we must still enable all
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# of them, so that QEMU properly builds its list of default targets, from
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# which it then checks if the specified sub-set is valid. That's what we
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# do in the first part of the if-clause.
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# Otherwise, if we do not want to pass a sub-set of targets, we then need
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# to either enable or disable -user and/or -system emulation appropriately.
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# That's what we do in the else-clause.
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ifneq ($(call qstrip,$(BR2_PACKAGE_QEMU_CUSTOM_TARGETS)),)
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QEMU_OPTS += --enable-system --enable-linux-user
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QEMU_OPTS += --target-list="$(call qstrip,$(BR2_PACKAGE_QEMU_CUSTOM_TARGETS))"
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else
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ifeq ($(BR2_PACKAGE_QEMU_SYSTEM),y)
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QEMU_OPTS += --enable-system
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else
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QEMU_OPTS += --disable-system
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endif
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ifeq ($(BR2_PACKAGE_QEMU_LINUX_USER),y)
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QEMU_OPTS += --enable-linux-user
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else
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QEMU_OPTS += --disable-linux-user
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endif
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endif
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# There is no "--enable-slirp"
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ifeq ($(BR2_PACKAGE_QEMU_SLIRP),)
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QEMU_OPTS += --disable-slirp
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endif
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ifeq ($(BR2_PACKAGE_QEMU_SDL),y)
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QEMU_OPTS += --enable-sdl
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QEMU_DEPENDENCIES += sdl2
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QEMU_VARS += SDL2_CONFIG=$(BR2_STAGING_DIR)/usr/bin/sdl2-config
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else
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QEMU_OPTS += --disable-sdl
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endif
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ifeq ($(BR2_PACKAGE_QEMU_FDT),y)
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QEMU_OPTS += --enable-fdt
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QEMU_DEPENDENCIES += dtc
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else
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QEMU_OPTS += --disable-fdt
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endif
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ifeq ($(BR2_PACKAGE_QEMU_TOOLS),y)
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QEMU_OPTS += --enable-tools
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else
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QEMU_OPTS += --disable-tools
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endif
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ifeq ($(BR2_PACKAGE_LIBSECCOMP),y)
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QEMU_OPTS += --enable-seccomp
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QEMU_DEPENDENCIES += libseccomp
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else
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QEMU_OPTS += --disable-seccomp
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endif
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ifeq ($(BR2_PACKAGE_LIBSSH2),y)
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QEMU_OPTS += --enable-libssh2
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QEMU_DEPENDENCIES += libssh2
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else
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QEMU_OPTS += --disable-libssh2
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endif
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# Override CPP, as it expects to be able to call it like it'd
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# call the compiler.
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define QEMU_CONFIGURE_CMDS
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( cd $(@D); \
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LIBS='$(QEMU_LIBS)' \
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$(TARGET_CONFIGURE_OPTS) \
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$(TARGET_CONFIGURE_ARGS) \
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CPP="$(TARGET_CC) -E" \
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$(QEMU_VARS) \
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./configure \
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--prefix=/usr \
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--cross-prefix=$(TARGET_CROSS) \
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--audio-drv-list= \
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--enable-kvm \
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--enable-attr \
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--enable-vhost-net \
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--disable-bsd-user \
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--disable-xen \
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--disable-vnc \
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--disable-virtfs \
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--disable-brlapi \
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--disable-curses \
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--disable-curl \
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--disable-bluez \
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--disable-vde \
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--disable-linux-aio \
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--disable-cap-ng \
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--disable-docs \
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--disable-spice \
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--disable-rbd \
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--disable-libiscsi \
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--disable-usb-redir \
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--disable-strip \
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--disable-sparse \
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--disable-mpath \
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--disable-sanitizers \
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--disable-hvf \
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--disable-whpx \
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--disable-malloc-trim \
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--disable-membarrier \
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--disable-vhost-crypto \
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--disable-libxml2 \
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--disable-capstone \
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--disable-git-update \
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--disable-opengl \
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$(QEMU_OPTS) \
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)
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endef
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define QEMU_BUILD_CMDS
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$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
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endef
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define QEMU_INSTALL_TARGET_CMDS
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$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) $(QEMU_MAKE_ENV) DESTDIR=$(TARGET_DIR) install
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endef
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$(eval $(generic-package))
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#-------------------------------------------------------------
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# Host-qemu
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HOST_QEMU_DEPENDENCIES = host-pkgconf host-python host-zlib host-libglib2 host-pixman
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# BR ARCH qemu
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# ------- ----
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# arm arm
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# armeb armeb
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# i486 i386
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# i586 i386
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# i686 i386
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# x86_64 x86_64
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# m68k m68k
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# microblaze microblaze
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# mips mips
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# mipsel mipsel
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# mips64 mips64
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# mips64el mips64el
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# powerpc ppc
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# powerpc64 ppc64
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# powerpc64le ppc64 (system) / ppc64le (usermode)
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# sh2a not supported
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# sh4 sh4
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# sh4eb sh4eb
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# sh4a sh4
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# sh4aeb sh4eb
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# sh64 not supported
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# sparc sparc
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HOST_QEMU_ARCH = $(ARCH)
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ifeq ($(HOST_QEMU_ARCH),i486)
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HOST_QEMU_ARCH = i386
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endif
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ifeq ($(HOST_QEMU_ARCH),i586)
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HOST_QEMU_ARCH = i386
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endif
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ifeq ($(HOST_QEMU_ARCH),i686)
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HOST_QEMU_ARCH = i386
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endif
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ifeq ($(HOST_QEMU_ARCH),powerpc)
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HOST_QEMU_ARCH = ppc
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endif
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ifeq ($(HOST_QEMU_ARCH),powerpc64)
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HOST_QEMU_ARCH = ppc64
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endif
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ifeq ($(HOST_QEMU_ARCH),powerpc64le)
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HOST_QEMU_ARCH = ppc64le
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HOST_QEMU_SYS_ARCH = ppc64
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endif
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ifeq ($(HOST_QEMU_ARCH),sh4a)
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HOST_QEMU_ARCH = sh4
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endif
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ifeq ($(HOST_QEMU_ARCH),sh4aeb)
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HOST_QEMU_ARCH = sh4eb
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endif
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HOST_QEMU_SYS_ARCH ?= $(HOST_QEMU_ARCH)
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ifeq ($(BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE),y)
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HOST_QEMU_TARGETS += $(HOST_QEMU_SYS_ARCH)-softmmu
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HOST_QEMU_OPTS += --enable-system --enable-fdt
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HOST_QEMU_DEPENDENCIES += host-dtc
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else
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HOST_QEMU_OPTS += --disable-system
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endif
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ifeq ($(BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE),y)
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HOST_QEMU_TARGETS += $(HOST_QEMU_ARCH)-linux-user
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HOST_QEMU_OPTS += --enable-linux-user
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HOST_QEMU_HOST_SYSTEM_TYPE = $(shell uname -s)
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ifneq ($(HOST_QEMU_HOST_SYSTEM_TYPE),Linux)
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$(error "qemu-user can only be used on Linux hosts")
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endif
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# kernel version as major*256 + minor
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HOST_QEMU_HOST_SYSTEM_VERSION = $(shell uname -r | awk -F. '{ print $$1 * 256 + $$2 }')
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HOST_QEMU_TARGET_SYSTEM_VERSION = $(shell echo $(BR2_TOOLCHAIN_HEADERS_AT_LEAST) | awk -F. '{ print $$1 * 256 + $$2 }')
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HOST_QEMU_COMPARE_VERSION = $(shell test $(HOST_QEMU_HOST_SYSTEM_VERSION) -ge $(HOST_QEMU_TARGET_SYSTEM_VERSION) && echo OK)
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#
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# The principle of qemu-user is that it emulates the instructions of
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# the target architecture when running the binary, and then when this
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# binary does a system call, it converts this system call into a
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# system call on the host machine. This mechanism makes an assumption:
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# that the target binary will not do system calls that do not exist on
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# the host. This basically requires that the target binary should be
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# built with kernel headers that are older or the same as the kernel
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# version running on the host machine.
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#
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ifeq ($(BR_BUILDING),y)
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ifneq ($(HOST_QEMU_COMPARE_VERSION),OK)
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$(error "Refusing to build qemu-user: target Linux version newer than host's.")
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endif
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endif # BR_BUILDING
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else # BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
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HOST_QEMU_OPTS += --disable-linux-user
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endif # BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
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ifeq ($(BR2_PACKAGE_HOST_QEMU_VDE2),y)
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HOST_QEMU_OPTS += --enable-vde
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HOST_QEMU_DEPENDENCIES += host-vde2
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endif
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ifdef ($(BR2_PACKAGE_HOST_QEMU_VIRTFS),y)
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HOST_QEMU_OPTS += --enable-virtfs
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endif
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# Override CPP, as it expects to be able to call it like it'd
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# call the compiler.
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define HOST_QEMU_CONFIGURE_CMDS
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cd $(@D); $(HOST_CONFIGURE_OPTS) CPP="$(HOSTCC) -E" \
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./configure \
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--target-list="$(HOST_QEMU_TARGETS)" \
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--prefix="$(HOST_DIR)" \
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--interp-prefix=$(STAGING_DIR) \
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--cc="$(HOSTCC)" \
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--host-cc="$(HOSTCC)" \
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--python=$(HOST_DIR)/bin/python2 \
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--extra-cflags="$(HOST_CFLAGS)" \
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--extra-ldflags="$(HOST_LDFLAGS)" \
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$(HOST_QEMU_OPTS)
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endef
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define HOST_QEMU_BUILD_CMDS
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$(HOST_MAKE_ENV) $(MAKE) -C $(@D)
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endef
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define HOST_QEMU_INSTALL_CMDS
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$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
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endef
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$(eval $(host-generic-package))
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# variable used by other packages
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QEMU_USER = $(HOST_DIR)/bin/qemu-$(HOST_QEMU_ARCH)
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