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

Thomas, All,

On Tuesday 14 August 2012 15:34:03 Thomas Petazzoni wrote:

Le Mon, 13 Aug 2012 01:53:59 +0200,
"Yann E. MORIN" [off-list ref] a ?crit :

quoted

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?

I want to build a libvirt-based system to host VMs, and I do not want
to use a complete distro for that : I do not care about the handy-dandy
init stuff, I don't care about networking auto-managing stuff, no fscking
desktop stuff... I just want a basic system that just runs a libvirt daemon,
and manages the VMs.

I want to build a completly-static QEMU, and that's not possible on a
desktop/server distro that uses glibc, because static linking still pulls
the NSS libs. So, rather than creating a new 'framework', I just decided
to reuse something. ;-)

I want to play! ;-)

quoted

+	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.

Doh... :/
/me hides...

quoted

+	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.

Of course! :-)

quoted

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.

Okydoky.

Thank you!

Regards,
Yann E. MORIN.

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