[Buildroot] [PATCH v4 4/4] package/xen: add custom git support

For completeness, add custom git support to match the capabilities of other
packages such as Linux, uboot or ATF.

To test this feature, use the following configs to test latest release of the
Xilinx Xen vendor tree.

To test:
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
BR2_PACKAGE_XEN=y
BR2_PACKAGE_XEN_CUSTOM_GIT=y
BR2_PACKAGE_XEN_CUSTOM_REPO_URL="https://github.com/Xilinx/xen.git"
BR2_PACKAGE_XEN_CUSTOM_REPO_VERSION="791ade0eeae73a851f728cf2c9964dd303cc7d8e"

Add to package/xen/xen.hash:
sha256  bb4c156bedcf2e621f8de258fcc3d84a189c522fcf39df8de3865ba53bc10874  xen-791ade0eeae73a851f728cf2c9964dd303cc7d8e-git4.tar.gz

Signed-off-by: Neal Frager <[email protected]>
Tested-by: Matthew Weber <[email protected]>
Prior test details: https://gist.github.com/matthew-l-weber/c17f14a3793ccee440a383e4177ff3db
Reviewed-by: John Ernberg <[email protected]>

---
V1->V2:
- rebased to updated master branch
V2->V4:
- merged into new patch series as the second patch
---
 package/xen/Config.in | 18 ++++++++++++++++++
 package/xen/xen.mk    |  9 +++++++++
 2 files changed, 27 insertions(+)

diff --git a/package/xen/Config.in b/package/xen/Config.in
index 3726504334..eb58c6928f 100644
--- a/package/xen/Config.in
+++ b/package/xen/Config.in
@@ -26,6 +26,9 @@ config BR2_PACKAGE_XEN_CUSTOM_VERSION
 config BR2_PACKAGE_XEN_CUSTOM_TARBALL
 	bool "Custom tarball"
 
+config BR2_PACKAGE_XEN_CUSTOM_GIT
+	bool "Custom Git repository"
+
 endchoice
 
 if BR2_PACKAGE_XEN_CUSTOM_TARBALL
@@ -45,6 +48,21 @@ config BR2_PACKAGE_XEN_VERSION
 	default BR2_PACKAGE_XEN_CUSTOM_VERSION_VALUE \
 				if BR2_PACKAGE_XEN_CUSTOM_VERSION
 	default "custom"	if BR2_PACKAGE_XEN_CUSTOM_TARBALL
+	default BR2_PACKAGE_XEN_CUSTOM_REPO_VERSION \
+				if BR2_PACKAGE_XEN_CUSTOM_GIT
+
+if BR2_PACKAGE_XEN_CUSTOM_GIT
+
+config BR2_PACKAGE_XEN_CUSTOM_REPO_URL
+	string "URL of custom repository"
+
+config BR2_PACKAGE_XEN_CUSTOM_REPO_VERSION
+	string "Custom repository version"
+	help
+	  Revision to use in the typical format used by Git
+	  E.G. a sha id, a tag, ..
+
+endif
 
 config BR2_PACKAGE_XEN_HYPERVISOR
 	bool "Xen hypervisor"
diff --git a/package/xen/xen.mk b/package/xen/xen.mk
index 81568020d5..e22ac440c7 100644
--- a/package/xen/xen.mk
+++ b/package/xen/xen.mk
@@ -23,6 +23,9 @@ ifeq ($(BR2_PACKAGE_XEN_CUSTOM_TARBALL),y)
 XEN_TARBALL = $(call qstrip,$(BR2_PACKAGE_XEN_CUSTOM_TARBALL_LOCATION))
 XEN_SITE = $(patsubst %/,%,$(dir $(XEN_TARBALL)))
 XEN_SOURCE = $(notdir $(XEN_TARBALL))
+else ifeq ($(BR2_PACKAGE_XEN_CUSTOM_GIT),y)
+XEN_SITE = $(call qstrip,$(BR2_PACKAGE_XEN_CUSTOM_REPO_URL))
+XEN_SITE_METHOD = git
 else
 # Handle stable official Xen versions
 XEN_SITE = https://downloads.xenproject.org/release/xen/$(XEN_VERSION)
@@ -107,4 +110,10 @@ $(error No tarball location specified. Please check BR2_PACKAGE_XEN_CUSTOM_TARBA
 endif
 endif
 
+ifeq ($(BR2_PACKAGE_XEN_CUSTOM_GIT),y)
+ifeq ($(call qstrip,$(BR2_PACKAGE_XEN_CUSTOM_REPO_URL)),)
+$(error No repository specified. Please check BR2_PACKAGE_XEN_CUSTOM_REPO_URL)
+endif
+endif
+
 $(eval $(autotools-package))
-- 
2.43.0

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