Add xenomai real-time Framework to buildroot

[Fixes by Thomas, including comments from Arnout:
  * Use AUTOTARGETS instead of GENTARGETS

  * Use $(KERNEL_ARCH) instead of $(BR2_ARCH) as argument to the
    prepare-kernel.sh script. This allows the arch name to be fixed
    with the usual sed expressions and the quotes to be stripped.

  * Add the --verbose option to prepare-kernel.sh. This allows to get
    some clear error message when no Xenomai patch has been found for
    the current kernel version.

  * Improve the help texts as suggested by Arnout, and remove the
    now useless README file.

  * Add a BR2_PACKAGE_XENOMAI_SMP option, instead of poking inside the
    kernel configuration to find out whether SMP is enabled or
    not. This cannot work because: 1) the kernel might be built
    outside of Buildroot and 2) if the kernel is built inside
    Buildroot, it is built *after* Xenomai, so the kernel
    configuration file is typically not yet present.

  * Simplify the ARM subarchitecture selection as suggested by Arnout.

  * Remove the documentation and development files according to
    Buildroot standards (using BR2_HAVE_DOCUMENTATION and
    BR2_HAVE_DEVFILES).

  * Simplify the /etc/ld.so.conf modification logic.
]

[Peter: whitespace fixes]
Signed-off-by: Benoit Mauduit <benoit.mauduit@openwide.fr>
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

1 files changed, 106 insertions, 0 deletions

diff --git a/package/xenomai/Config.in b/package/xenomai/Config.in
new file mode 100644
index 000000000..b5737b8f7
--- /dev/null
+++ b/package/xenomai/Config.in
@@ -0,0 +1,106 @@
+config BR2_PACKAGE_XENOMAI
+	bool "Xenomai Userspace"
+	help
+	  Real-Time Framework for Linux
+	  http://www.xenomai.org
+
+	  Xenomai is split in two parts: a kernel part and an
+	  userspace part.
+
+	  This package contains the userspace part, which consists
+	  mainly in libraries to write userspace real-time programs
+	  that interact with the in-kernel Xenomai real-time core.
+
+	  For those libraries to work, you need a Xenomai-enabled
+	  kernel. This is possible in two ways:
+	   - if you compile your kernel with Buildroot, you need to go
+	     to Linux Kernel -> Linux Kernel Extensions to enable the
+	     Xenomai extension.
+	   - if you compile your kernel outside of Buildroot, you need
+	     to make sure that it is Xenomai-enabled.
+
+	  Finally, if you are using a static /dev, make sure to
+	  uncomment the Xenomai entries listed in
+	  target/generic/device_table_dev.txt.
+
+if BR2_PACKAGE_XENOMAI
+
+config BR2_PACKAGE_XENOMAI_VERSION
+	string "Custom Xenomai version"
+	help
+	  Manually select Xenomai version.  If left empty, the default
+	  version will be used.
+
+	  Make sure that the selected version has a patch for your
+	  selected Linux kernel. If it does not, download and select
+	  a patch manually with
+	  BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH, in the Linux
+	  Kernel -> Linux Kernel Extensions menu.
+
+config BR2_PACKAGE_XENOMAI_SMP
+	bool "Enable SMP support"
+	help
+	  This option allows to enable or disable SMP support. It has
+	  to match your kernel configuration.
+
+choice
+	prompt "Xenomai ARM CPU type"
+	depends on BR2_arm
+	default BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM
+	help
+	  On the ARM architecture, Xenomai needs to be configured for
+	  a specific sub-architecture.  Select the appropriate
+	  sub-architecture from the list.
+
+	config BR2_PACKAGE_XENOMAI_CPU_AT91RM9200
+		bool "Atmel AT91RM9200"
+
+	config BR2_PACKAGE_XENOMAI_CPU_AT91SAM926X
+		bool "Atmel AT91SAM926X"
+
+	config BR2_PACKAGE_XENOMAI_CPU_INTEGRATOR
+		bool "ARM Ltd. Integrator"
+
+	config BR2_PACKAGE_XENOMAI_CPU_IXP4XX
+		bool "Intel IXP4XX (XScale)"
+
+	config BR2_PACKAGE_XENOMAI_CPU_IMX
+		bool "Freescale i.MX (MX1/MXL)"
+
+	config BR2_PACKAGE_XENOMAI_CPU_IMX21
+		bool "Freescale i.MX21"
+
+	config BR2_PACKAGE_XENOMAI_CPU_MX2
+		bool "Freescale MXC/MX2"
+
+	config BR2_PACKAGE_XENOMAI_CPU_MX3
+		bool "Freescale MXC/MX3"
+
+	config BR2_PACKAGE_XENOMAI_CPU_SA1100
+		bool "StrongARM SA1100"
+
+	config BR2_PACKAGE_XENOMAI_CPU_S3C2410
+		bool "S3C2410"
+
+	config BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM
+		bool "Generic ARM"
+
+endchoice
+
+# Now set CPU type. We force manually selected type even if detected in case
+# user takes the risk.
+config BR2_PACKAGE_XENOMAI_CPU_TYPE
+	string
+	depends on BR2_PACKAGE_XENOMAI && BR2_arm
+	default "at91rm9200"  if BR2_PACKAGE_XENOMAI_CPU_AT91RM9200
+	default "at91sam926x" if BR2_PACKAGE_XENOMAI_CPU_AT91SAM926X
+	default "integrator"  if BR2_PACKAGE_XENOMAI_CPU_INTEGRATOR
+	default "ixp4xx"      if BR2_PACKAGE_XENOMAI_CPU_IXP4XX
+	default "generic"     if BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM
+	default "imx"         if BR2_PACKAGE_XENOMAI_CPU_IMX
+	default "imx21"       if BR2_PACKAGE_XENOMAI_CPU_IMX21
+	default "mx2"         if BR2_PACKAGE_XENOMAI_CPU_MX2
+	default "mx3"         if BR2_PACKAGE_XENOMAI_CPU_MX3
+	default "s3c2410"     if BR2_PACKAGE_XENOMAI_CPU_S3C2410
+
+endif