Introduce initial meta-foundation structure

Adds minimal set of dependencies required
for the "foundation" application to build
and initialize:
- SAMGR (distributed services manager + headers)
- SAFWK (project containing sources of the foundation app)

Note:  Debugging output is enabled by default on SAFWK
Note2: Currently SAMGR can include OS adapter only for
       Linux (posix) or uC (cmsis). If LiteOS or other
       system is going to be used, please modify
       samgr_git.bb's TARGET_ADAPTER accordingly.

Signed-off-by: Zbigniew Bodek <zbigniew.bodek@huawei.com>

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README.md

+This README file contains information on the contents of the meta-ohos-foundation layer.
 
+Please see the corresponding sections below for details.
+
+Dependencies
+============
+
+  URI: https://git.ostc-eu.org/incubate/meta-ohos/meta-common.git  
+  branch: develop  
+
+  URI: https://git.ostc-eu.org/incubate/meta-ohos/meta-thirdparty.git  
+  branch: develop
+
+
+Table of Contents
+=================
+
+  I. Adding the meta-foundation layer to your build
+ II. Misc
+
+
+I. Adding the meta-foundation layer to your build
+=================================================
+
+Run 'bitbake-layers add-layer meta-foundation'
+
+II. Misc
+========
+
+This layer provides recipes for the core elements (foundation) of
+the OHOS.
+
+## Layer layout:
+ - recipes 
+   - samgr - Distritbuted Services Manager 
+   - safwk - Main foundation application (initialization routines) 

conf/layer.conf

+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "ohos-foundation"
+BBFILE_PATTERN_ohos-foundation = "^${LAYERDIR}/"
+BBFILE_PRIORITY_ohos-foundation = "6"
+
+LAYERDEPENDS_ohos-foundation = "core ohos-thirdparty ohos-common"
+LAYERSERIES_COMPAT_ohos-foundation = "gatesgarth"

recipes-interfaces/samgr-kits/samgr-kits_git.bb

+SUMMARY = "OHOS interface kits for SAMGR"
+DESCRIPTION = "Interface kits for OHOS distributed service manager "
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=98c2e72b17fae6c40fb14fd5e43b29ec"
+
+SRC_URI = "git://gitee.com/openharmony/distributedschedule_interfaces_kits_samgr_lite.git;protocol=https"
+
+PV = "1.0+git${SRCPV}"
+SRCREV = "4acd6990320126796a28b2c3d7ad4c94932eb4b7"
+
+S = "${WORKDIR}/git"
+
+do_install () {
+	install -d ${D}${includedir}
+	install -m 0755 ${S}/samgr/*.h ${D}${includedir}/
+	install -m 0755 ${S}/registry/*.h ${D}${includedir}/
+}

recipes-safwk/safwk/safwk_git.bb

+SUMMARY = "OHOS foundation"
+DESCRIPTION = "OHOS foundation main application"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=98c2e72b17fae6c40fb14fd5e43b29ec"
+
+DEPENDS += "utils-native-lite libsec hiviewdfx-innerkits-hilog hiviewdfx-hilog samgr samgr-kits"
+
+SRC_URI = "git://gitee.com/openharmony/distributedschedule_services_safwk_lite.git;protocol=https"
+
+PV = "1.0+git${SRCPV}"
+SRCREV = "26e0346b72cc7f8ac98395f9f047f684b7137471"
+
+S = "${WORKDIR}/git"
+
+# Debug flag enabled by default for now
+CFLAGS += "-DDEBUG_SERVICES_SAFWK_LITE"
+LDFLAGS += "-lrt"
+
+do_compile () {
+	${CC} ${CFLAGS} ${LDFLAGS} src/*.c -o ${B}/foundation -lsamgr -lsec -lhiviewdfx-hilog
+}
+
+do_install () {
+	install -d ${D}${base_bindir}
+	install -m 0755 ${B}/foundation ${D}${base_bindir}
+}
+
+FILES_${PN} += "${base_bindir}/foundation"
+
+PROVIDES = "foundation"

recipes-samgr/samgr/samgr_git.bb

+SUMMARY = "OHOS SAMGR"
+DESCRIPTION = "OHOS distributed services manager"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=98c2e72b17fae6c40fb14fd5e43b29ec"
+
+DEPENDS += "utils-native-lite libsec samgr-kits hiviewdfx-innerkits-hilog"
+
+SRC_URI = "git://gitee.com/openharmony/distributedschedule_services_samgr_lite.git;protocol=https"
+
+PV = "1.0+git${SRCPV}"
+PVSHORT = '${@d.getVar("PV", False).split("+")[0]}'
+PVMAJOR = '${@d.getVar("PV", False).split(".")[0]}'
+
+SRCREV = "626f7131c567cef9f96eb7cee24ee2eaa8cac4f5"
+
+S = "${WORKDIR}/git"
+
+CFLAGS_SAMGR = "${CFLAGS} -I${S}/samgr/adapter -I${S}/samgr -I${S}/samgr/source -I${S}/samgr/registry -fPIC -shared"
+LDFLAGS_SAMGR = "${LDFLAGS} -lsec -pthread -L${B} -Wl,-soname,lib${PN}.so.${PVMAJOR}"
+
+# Note: modify this when adapting to LiteOS
+TARGET_ADAPTER = '${@ "posix" if "linux" in d.getVar("TARGET_OS", False) else "cmsis"}'
+
+do_compile () {
+	${CC} ${CFLAGS_SAMGR} ${LDFLAGS_SAMGR}			\
+		${S}/samgr/source/*.c				\
+		${S}/samgr/registry/*.c				\
+		${S}/samgr/adapter/${TARGET_ADAPTER}/*.c	\
+		-o ${B}/lib${PN}.so.${PVSHORT}
+}
+
+do_install () {
+	install -d ${D}${libdir}
+	oe_soinstall ${B}/lib${PN}.so.${PVSHORT} ${D}${libdir}
+}