etcd: add recipe

Investigating the potential use of etcd within an OpenBMC distribution
to manage data sharing and leader election in a multi-BMC system. Start
off with a basic recipe to build the package.

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>

meta-oe/recipes-extended/etcd/etcd_3.5.5.bb

@@ -0,0 +1,31 @@
+DESCRIPTION = "etcd is a distributed key-value store for distributed systems"
+HOMEPAGE = "https://etcd.io/"
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${S}/${GO_INSTALL}/LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"
+
+SRC_URI = "git://github.com/etcd-io/etcd;branch=release-3.5;protocol=https"
+SRCREV = "19002cfc689fba2b8f56605e5797bf79f8b61fdd"
+UPSTREAM_CHECK_COMMITS = "1"
+
+GO_IMPORT = "go.etcd.io/etcd/v3"
+GO_INSTALL = "src/${GO_IMPORT}/"
+
+RDEPENDS:${PN}-dev = " \
+    bash \
+"
+
+export GO111MODULE="on"
+
+inherit go
+
+# Need to build etcd out of where it is extracted to
+# Need to directly call build script vs. "make build"
+# because "make build" executes the generated binaries
+# at the end of the build which do not run correctly
+# when cross compiling for another machine
+go_do_compile:prepend() {
+    cd ${GO_INSTALL}
+    ./build.sh
+}
+