[Buildroot] [PATCH 11/36] package/qemu: new package

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Le Mon, 13 Aug 2012 01:53:59 +0200,
"Yann E. MORIN" <yann.morin.1998@free.fr> a ?crit :

> new file mode 100644
> index 0000000..a77d863
> --- /dev/null
> +++ b/package/qemu/Config.in
> @@ -0,0 +1,24 @@
> +config BR2_PACKAGE_QEMU
> +	bool "QEMU"

Just curious, what's the use case for Qemu on the target? I would have
seen Qemu as something useful on the host, but on the target?

> +	depends on BR2_PACKAGE_PYTHON       # We only need host-python,
> +	                                    # but there's no way to say so.

Doh? You just need to do:

QEMU_DEPENDENCIES += host-python

and that's it.

> +	select BR2_PACKAGE_ZLIB
> +	select BR2_PACKAGE_LIBGLIB2
> +	help
> +	  QEMU is a generic and open source machine emulator and virtualizer.
> +	  
> +	  When used as a machine emulator, QEMU can run OSes and programs made
> +	  for one machine (e.g. an ARM board) on a different machine (e.g.
> +	  your own PC). By using dynamic translation, it achieves very good
> +	  performance.
> +	  
> +	  When used as a virtualizer, QEMU achieves near native performances
> +	  by executing the guest code directly on the host CPU. QEMU supports
> +	  virtualization when executing under the Xen hypervisor or using the
> +	  KVM kernel module in Linux. When using KVM, QEMU can virtualize x86,
> +	  server and embedded PowerPC, and S390 guests. 
> +	  
> +	  http://qemu.org/
> +
> +comment "QEMU requires python"
> +	depends on !BR2_PACKAGE_PYTHON

You can drop this.

> diff --git a/package/qemu/qemu.mk b/package/qemu/qemu.mk
> new file mode 100644
> index 0000000..3825731
> --- /dev/null
> +++ b/package/qemu/qemu.mk
> @@ -0,0 +1,98 @@
> +#-----------------------------------------------------------------------------
> +# Package description
> +
> +QEMU_VERSION = 1.1.1-1
> +QEMU_SOURCE = qemu-$(QEMU_VERSION).tar.bz2
> +QEMU_SITE = http://wiki.qemu.org/download
> +QEMU_LICENSE = GPLv2 LGPLv2.1 MIT BSD-3c BSD-2c 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.
> +
> +#-----------------------------------------------------------------------------
> +# Package unconditional configuration
> +
> +QEMU_DEPENDENCIES = zlib libglib2
> +
> +#-----------------------------------------------------------------------------
> +# Package conditional configuration
> +
> +# Need the LIBS variable because librt and libm are
> +# not automatically pulled. :-(
> +QEMU_LIBS = -lrt -lm
> +
> +QEMU_OPTS =
> +QEMU_VARS =
> +
> +#----------------------------------------------------------------------------
> +# Package build process
> +
> +# Note: although QEMU uses a ./configure script, it is not compatible with
> +#       the traditional autotools options (eg. --target et al.), so we can
> +#       not use the autotools-package infrastructure. So we have to use the
> +#       generic-package infra instead. Sigh... :-(
> +
> +define QEMU_CONFIGURE_CMDS
> +	( cd $(@D);                                 \
> +	    LIBS='$(QEMU_LIBS)'                     \
> +	    $(TARGET_CONFIGURE_OPTS)                \
> +	    $(TARGET_CONFIGURE_ARGS)                \
> +	    $(QEMU_VARS)                            \
> +	    ./configure                             \
> +	        --prefix=/usr                       \
> +	        --cross-prefix=$(TARGET_CROSS)      \
> +	        --audio-drv-list=                   \
> +	        --audio-card-list=                  \
> +	        --enable-kvm                        \
> +	        --enable-nptl                       \
> +	        --enable-attr                       \
> +	        --enable-vhost-net                  \
> +	        --enable-system                     \
> +	        --enable-linux-user                 \
> +	        --disable-bsd-user                  \
> +	        --disable-xen                       \
> +	        --disable-slirp                     \
> +	        --disable-sdl                       \
> +	        --disable-vnc                       \
> +	        --disable-virtfs                    \
> +	        --disable-brlapi                    \
> +	        --disable-curses                    \
> +	        --disable-curl                      \
> +	        --disable-fdt                       \
> +	        --disable-bluez                     \
> +	        --disable-guest-base                \
> +	        --disable-uuid                      \
> +	        --disable-vde                       \
> +	        --disable-linux-aio                 \
> +	        --disable-cap-ng                    \
> +	        --disable-docs                      \
> +	        --disable-spice                     \
> +	        --disable-rbd                       \
> +	        --disable-libiscsi                  \
> +	        --disable-usb-redir                 \
> +	        --disable-guest-agent               \
> +	        --disable-smartcard                 \
> +	        --disable-strip                     \
> +	        $(QEMU_OPTS)                        \
> +	)
> +endef
> +
> +define QEMU_BUILD_CMDS
> +	$(MAKE) -C $(@D)
> +endef
> +
> +define QEMU_INSTALL_TARGET_CMDS
> +	$(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) install
> +endef
> +
> +define QEMU_UNINSTALL_TARGET_CMDS
> +	@echo 'QEMU has no uninstall rule.'
> +	@false
> +endef

Just don't implement the UNINSTALL_TARGET_CMDS in this case.

Since quite some time, we're considering dropping the
UNINSTALL_TARGET_CMDS and CLEAN_CMDS altogether.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com