3rdparty renamed to subprojects

.gitmodules

@@ -1,9 +1,9 @@
 [submodule "3rdparty/nlohmann_json"]
-	path = 3rdparty/nlohmann_json
+	path = subprojects/nlohmann_json
 	url = https://github.com/nlohmann/json.git
 [submodule "3rdparty/singleapplication"]
-	path = 3rdparty/singleapplication
+	path = subprojects/singleapplication/singleapplication.git
 	url = https://github.com/itay-grudev/SingleApplication.git
 [submodule "3rdparty/csv-parser"]
-	path = 3rdparty/csv-parser
+	path = subprojects/csv-parser
 	url = https://github.com/vincentlaucsb/csv-parser.git

subprojects/singleapplication/meson.build

@@ -0,0 +1,27 @@
+project('singleapplication')
+
+qt5 = import('qt5')
+dep_qt5 = dependency('qt5', modules: ['Core', 'Widgets', 'Network'])
+
+singleapp_inc = include_directories('singleapplication.git')
+
+singleapp_moc = qt5.preprocess(
+    moc_headers: ['singleapplication.git/singleapplication.h', 'singleapplication.git/singleapplication_p.h'],
+    moc_extra_arguments: ['-DQAPPLICATION_CLASS=QApplication'],
+    dependencies: dep_qt5
+)
+
+singleapp_lib = static_library('SingleApplication', 
+    ['singleapplication.git/singleapplication.cpp', 'singleapplication.git/singleapplication_p.cpp', singleapp_moc],
+    include_directories: singleapp_inc,
+    cpp_args : '-DQAPPLICATION_CLASS=QApplication',
+    dependencies: dep_qt5
+)
+
+singleapp_dep = declare_dependency(
+    include_directories: singleapp_inc,
+    link_with: singleapp_lib
+)
+
+# On windows, SingleApplication needs to be linked against advapi32. This is
+# done by adding 'advapi32' to cpp_winlibs, where it should be by default.