Add ecm_generate_dbus_service_file

Summary:
It serves as a replacement for `kdbusaddons_generate_dbus_service_file`.

An application can be a DBus-activated service just fine without using KDBusAddons.
Moreover, this new module uses named arguments for future-proofing, and adds support for specifying a `SystemdService`.
It also cleans up the confusion on what the "path" is about: Rather than requiring to specify executable and path separately, we just extract the executable file name on Windows, if necessary.

Usage:
```
ecm_generate_dbus_service_file(NAME org.kde.kded5
                               EXECUTABLE ${KDE_INSTALL_FULL_BINDIR}/kded5
                               SYSTEMD_SERVICE plasma-kded)
```

Test Plan:
* Was able to generate a kded service file
* Was able to generate a kded service file with `SystemdUnit`
* Verified that it moaned when executable wasn't an absolute path
* Untested on Windwos

Reviewers: #frameworks, davidedmundson, kossebau, kfunk, habacker

Subscribers: kde-frameworks-devel, kde-buildsystem

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D29051

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/ECMGenerateDBusServiceFileTest/CMakeLists.txt b/tests/ECMGenerateDBusServiceFileTest/CMakeLists.txt
new file mode 100644
index 00000000..426ada89
--- /dev/null
+++ b/tests/ECMGenerateDBusServiceFileTest/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.5)
+project(ECMGenerateDBusServiceFileTest)
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../modules)
+
+# make sure the test install dir is clean
+file(REMOVE_RECURSE "${CMAKE_INSTALL_PREFIX}")
+include(ECMGenerateDBusServiceFile)
+
+# run test
+
+ecm_generate_dbus_service_file(
+   NAME org.kde.kded5
+   EXECUTABLE /usr/bin/kded5
+   DESTINATION ${CMAKE_INSTALL_PREFIX}/test
+)
+
+ecm_generate_dbus_service_file(
+   NAME org.kde.kded5.withSystemD
+   EXECUTABLE /usr/bin/kded5
+   SYSTEMD_SERVICE plasma-kded.service
+   DESTINATION ${CMAKE_INSTALL_PREFIX}/test
+)
+
+# this will be run by CTest
+configure_file(check_tree.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/check_tree.cmake" @ONLY)