rbutil: Deploy support in cmake.

Add a "deploy" target that will create a distributable file.

- Linux: AppImage.
- Windows: zip file.
- MacOS: dmg.

Change-Id: Id8ae9c021bc5bbb1abf066205b57d943c3f3b327

1 files changed, 47 insertions, 0 deletions

diff --git a/utils/cmake/download.cmake b/utils/cmake/download.cmake
new file mode 100644
index 0000000000..bd3df4d83d
--- /dev/null
+++ b/utils/cmake/download.cmake
@@ -0,0 +1,47 @@
+#
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+#
+# All files in this archive are subject to the GNU General Public License.
+# See the file COPYING in the source tree root for full license agreement.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+
+# This is a separate cmake script, to be invoked as
+#   cmake -P -DURL=<url-to-download> -DOUTDIR=<output-folder>
+# Downloads the file and store it in OUTDIR, using the file basename as output
+# filename.
+# The downloaded file gets its executable flag set.
+
+function(gettempdir basedir tmpdir)
+    # Create a random filename in current directory.
+    # Result stored in tmpdir.
+    string(RANDOM LENGTH 24 _tmp)
+    while(EXISTS "${basedir}/${_tmp}.tmp")
+        string(RANDOM LENGTH 24 _tmp)
+    endwhile()
+    set("${tmpdir}" "${basedir}/${_tmp}.tmp" PARENT_SCOPE)
+endfunction()
+
+get_filename_component(fname "${URL}" NAME)
+
+if(EXISTS "${OUTDIR}/${fname}")
+    message("-- Found ${fname}")
+else()
+    message("-- Downloading ${URL} ...")
+    gettempdir(${OUTDIR} tmp)
+
+    # cmake CHOWN is 3.19+, thus download to a temporary folder, then copy.
+    file(DOWNLOAD "${URL}" "${tmp}/${fname}")
+    file(COPY "${tmp}/${fname}" DESTINATION "${OUTDIR}"
+         FILE_PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ)
+    file(REMOVE_RECURSE "${tmp}")
+endif()
+
+