boost-sml: add new recipe

"Your scalable C++14 one header only State Machine Library with no
dependencies"

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/boost-sml/boost-sml_git.bb

@@ -0,0 +1,27 @@
+SUMMARY = "[Boost::ext].SML (State Machine Language)"
+DESCRIPTION = "Your scalable C++14 one header only State Machine Library with no dependencies"
+AUTHOR = "Krzysztof Jusiak"
+HOMEPAGE = "https://github.com/boost-ext/sml"
+BUGTRACKER = "https://github.com/boost-ext/sml/issues"
+SECTION = "libs"
+LICENSE = "BSL-1.0"
+LIC_FILES_CHKSUM = "file://LICENSE.md;md5=e4224ccaecb14d942c71d31bef20d78c"
+
+DEPENDS += "boost qemu-native"
+
+PV = "git${SRCPV}"
+
+SRC_URI = "git://github.com/boost-ext/sml.git;protocol=https;branch=master"
+SRCREV = "bcc8dc7815c0d17ad3a8bd52b202f4e90d4d4ca1"
+
+S = "${WORKDIR}/git"
+
+inherit cmake
+
+# Building benchmarks takes a lot of time and requires additional headers (euml2.hpp)
+EXTRA_OECMAKE:append = " -DSML_BUILD_BENCHMARKS:bool=OFF"
+
+# [boost::ext].XML is a header only C++ library, so the main package will be empty.
+ALLOW_EMPTY:${PN} = "1"
+
+BBCLASSEXTEND = "nativesdk"