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kumquat-buildroot/package/qemu/qemu.mk
Thomas Petazzoni 2ae7b21e0b package/qemu: declare target variant before host variant 
Our package infrastructure uses inheritance of a number of values from
the target package to the host package, which assumes the target
package is defined before the host package. In addition, future
changes are going to make this requirement even more important.

Therefore, let's fix the qemu package so that it declares its target
variant before its host variant, like all other packages in
Buildroot. We handle qemu separately from other packages, because
unlike other packages, it didn't had the "eval" for the host and
target packages at the end of the file, but rather all variables
related to the host variant first, then the call to the package
infrastructure for the host variant, then the variables related to the
target variant, and finally the call to the package infrastructure for
the target variant. We are inverting the order of those two big parts
in this commit.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-04-30 17:43:48 +02:00

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################################################################################
#
# qemu
#
################################################################################
QEMU_VERSION = 2.10.2
QEMU_SOURCE = qemu-$(QEMU_VERSION).tar.xz
QEMU_SITE = http://download.qemu.org
QEMU_LICENSE = GPL-2.0, LGPL-2.1, MIT, BSD-3-Clause, BSD-2-Clause, Others/BSD-1c
QEMU_LICENSE_FILES = COPYING COPYING.LIB
# NOTE: there is no top-level license file for non-(L)GPL licenses;
# the non-(L)GPL license texts are specified in the affected
# individual source files.
#-------------------------------------------------------------
# Target-qemu
QEMU_DEPENDENCIES = host-pkgconf host-python libglib2 zlib pixman
# Need the LIBS variable because librt and libm are
# not automatically pulled. :-(
QEMU_LIBS = -lrt -lm
QEMU_OPTS =
QEMU_VARS = \
LIBTOOL=$(HOST_DIR)/bin/libtool \
PYTHON=$(HOST_DIR)/bin/python2 \
PYTHONPATH=$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages
# If we want to specify only a subset of targets, we must still enable all
# of them, so that QEMU properly builds its list of default targets, from
# which it then checks if the specified sub-set is valid. That's what we
# do in the first part of the if-clause.
# Otherwise, if we do not want to pass a sub-set of targets, we then need
# to either enable or disable -user and/or -system emulation appropriately.
# That's what we do in the else-clause.
ifneq ($(call qstrip,$(BR2_PACKAGE_QEMU_CUSTOM_TARGETS)),)
QEMU_OPTS += --enable-system --enable-linux-user
QEMU_OPTS += --target-list="$(call qstrip,$(BR2_PACKAGE_QEMU_CUSTOM_TARGETS))"
else
ifeq ($(BR2_PACKAGE_QEMU_SYSTEM),y)
QEMU_OPTS += --enable-system
else
QEMU_OPTS += --disable-system
endif
ifeq ($(BR2_PACKAGE_QEMU_LINUX_USER),y)
QEMU_OPTS += --enable-linux-user
else
QEMU_OPTS += --disable-linux-user
endif
endif
ifeq ($(BR2_PACKAGE_QEMU_SDL),y)
QEMU_OPTS += --enable-sdl
QEMU_DEPENDENCIES += sdl
QEMU_VARS += SDL_CONFIG=$(BR2_STAGING_DIR)/usr/bin/sdl-config
else
QEMU_OPTS += --disable-sdl
endif
ifeq ($(BR2_PACKAGE_QEMU_FDT),y)
QEMU_OPTS += --enable-fdt
QEMU_DEPENDENCIES += dtc
else
QEMU_OPTS += --disable-fdt
endif
ifeq ($(BR2_PACKAGE_QEMU_TOOLS),y)
QEMU_OPTS += --enable-tools
else
QEMU_OPTS += --disable-tools
endif
ifeq ($(BR2_PACKAGE_LIBSSH2),y)
QEMU_OPTS += --enable-libssh2
QEMU_DEPENDENCIES += libssh2
else
QEMU_OPTS += --disable-libssh2
endif
# Override CPP, as it expects to be able to call it like it'd
# call the compiler.
define QEMU_CONFIGURE_CMDS
( cd $(@D); \
LIBS='$(QEMU_LIBS)' \
$(TARGET_CONFIGURE_OPTS) \
$(TARGET_CONFIGURE_ARGS) \
CPP="$(TARGET_CC) -E" \
$(QEMU_VARS) \
./configure \
--prefix=/usr \
--cross-prefix=$(TARGET_CROSS) \
--with-system-pixman \
--audio-drv-list= \
--enable-kvm \
--enable-attr \
--enable-vhost-net \
--disable-bsd-user \
--disable-xen \
--disable-slirp \
--disable-vnc \
--disable-virtfs \
--disable-brlapi \
--disable-curses \
--disable-curl \
--disable-bluez \
--disable-vde \
--disable-linux-aio \
--disable-cap-ng \
--disable-docs \
--disable-spice \
--disable-rbd \
--disable-libiscsi \
--disable-usb-redir \
--disable-strip \
--disable-seccomp \
--disable-sparse \
$(QEMU_OPTS) \
)
endef
define QEMU_BUILD_CMDS
$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
endef
define QEMU_INSTALL_TARGET_CMDS
$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) $(QEMU_MAKE_ENV) DESTDIR=$(TARGET_DIR) install
endef
$(eval $(generic-package))
#-------------------------------------------------------------
# Host-qemu
HOST_QEMU_DEPENDENCIES = host-pkgconf host-python host-zlib host-libglib2 host-pixman
# BR ARCH qemu
# ------- ----
# arm arm
# armeb armeb
# i486 i386
# i586 i386
# i686 i386
# x86_64 x86_64
# m68k m68k
# microblaze microblaze
# mips mips
# mipsel mipsel
# mips64 mips64
# mips64el mips64el
# powerpc ppc
# powerpc64 ppc64
# powerpc64le ppc64 (system) / ppc64le (usermode)
# sh2a not supported
# sh4 sh4
# sh4eb sh4eb
# sh4a sh4
# sh4aeb sh4eb
# sh64 not supported
# sparc sparc
HOST_QEMU_ARCH = $(ARCH)
ifeq ($(HOST_QEMU_ARCH),i486)
HOST_QEMU_ARCH = i386
endif
ifeq ($(HOST_QEMU_ARCH),i586)
HOST_QEMU_ARCH = i386
endif
ifeq ($(HOST_QEMU_ARCH),i686)
HOST_QEMU_ARCH = i386
endif
ifeq ($(HOST_QEMU_ARCH),powerpc)
HOST_QEMU_ARCH = ppc
endif
ifeq ($(HOST_QEMU_ARCH),powerpc64)
HOST_QEMU_ARCH = ppc64
endif
ifeq ($(HOST_QEMU_ARCH),powerpc64le)
HOST_QEMU_ARCH = ppc64le
HOST_QEMU_SYS_ARCH = ppc64
endif
ifeq ($(HOST_QEMU_ARCH),sh4a)
HOST_QEMU_ARCH = sh4
endif
ifeq ($(HOST_QEMU_ARCH),sh4aeb)
HOST_QEMU_ARCH = sh4eb
endif
HOST_QEMU_SYS_ARCH ?= $(HOST_QEMU_ARCH)
ifeq ($(BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE),y)
HOST_QEMU_TARGETS += $(HOST_QEMU_SYS_ARCH)-softmmu
HOST_QEMU_OPTS += --enable-system --enable-fdt
HOST_QEMU_DEPENDENCIES += host-dtc
else
HOST_QEMU_OPTS += --disable-system
endif
ifeq ($(BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE),y)
HOST_QEMU_TARGETS += $(HOST_QEMU_ARCH)-linux-user
HOST_QEMU_OPTS += --enable-linux-user
HOST_QEMU_HOST_SYSTEM_TYPE = $(shell uname -s)
ifneq ($(HOST_QEMU_HOST_SYSTEM_TYPE),Linux)
$(error "qemu-user can only be used on Linux hosts")
endif
# kernel version as major*256 + minor
HOST_QEMU_HOST_SYSTEM_VERSION = $(shell uname -r | awk -F. '{ print $$1 * 256 + $$2 }')
HOST_QEMU_TARGET_SYSTEM_VERSION = $(shell echo $(BR2_TOOLCHAIN_HEADERS_AT_LEAST) | awk -F. '{ print $$1 * 256 + $$2 }')
HOST_QEMU_COMPARE_VERSION = $(shell test $(HOST_QEMU_HOST_SYSTEM_VERSION) -ge $(HOST_QEMU_TARGET_SYSTEM_VERSION) && echo OK)
#
# The principle of qemu-user is that it emulates the instructions of
# the target architecture when running the binary, and then when this
# binary does a system call, it converts this system call into a
# system call on the host machine. This mechanism makes an assumption:
# that the target binary will not do system calls that do not exist on
# the host. This basically requires that the target binary should be
# built with kernel headers that are older or the same as the kernel
# version running on the host machine.
#
ifeq ($(BR_BUILDING),y)
ifneq ($(HOST_QEMU_COMPARE_VERSION),OK)
$(error "Refusing to build qemu-user: target Linux version newer than host's.")
endif
endif # BR_BUILDING
else # BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
HOST_QEMU_OPTS += --disable-linux-user
endif # BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
ifeq ($(BR2_PACKAGE_HOST_QEMU_VDE2),y)
HOST_QEMU_OPTS += --enable-vde
HOST_QEMU_DEPENDENCIES += host-vde2
endif
# Override CPP, as it expects to be able to call it like it'd
# call the compiler.
define HOST_QEMU_CONFIGURE_CMDS
cd $(@D); $(HOST_CONFIGURE_OPTS) CPP="$(HOSTCC) -E" \
./configure \
--target-list="$(HOST_QEMU_TARGETS)" \
--prefix="$(HOST_DIR)" \
--interp-prefix=$(STAGING_DIR) \
--cc="$(HOSTCC)" \
--host-cc="$(HOSTCC)" \
--python=$(HOST_DIR)/bin/python2 \
--extra-cflags="$(HOST_CFLAGS)" \
--extra-ldflags="$(HOST_LDFLAGS)" \
$(HOST_QEMU_OPTS)
endef
define HOST_QEMU_BUILD_CMDS
$(HOST_MAKE_ENV) $(MAKE) -C $(@D)
endef
define HOST_QEMU_INSTALL_CMDS
$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
endef
$(eval $(host-generic-package))
# variable used by other packages
QEMU_USER = $(HOST_DIR)/bin/qemu-$(HOST_QEMU_ARCH)
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