meson: add flatpak build option

* the `flatpak` option disables docs and uses the flatpak as the
command to run in the steam tool

* update both meson and make to inherit the command used in `umu-launcher`
steam tool from the system-wide entry point for system packages

Makefile.in

@@ -47,9 +47,11 @@ version-install: version
 	install -Dm 644 umu/umu_version.json -t $(DESTDIR)$(DATADIR)/$(INSTALLDIR)
 
 
+UMU_RUN_COMMAND = $(DATADIR)/$(INSTALLDIR)/umu_run.py
+
 $(OBJDIR)/.build-umu: | $(OBJDIR)
 	$(info :: Building umu )
-	sed 's|@INSTALL_PATH@|$(DATADIR)/$(INSTALLDIR)|g' umu/umu-run.in > $(OBJDIR)/umu-run
+	sed 's|@INSTALL_PATH@|$(UMU_RUN_COMMAND)|g' umu/umu-run.in > $(OBJDIR)/umu-run
 	touch $(@)
 
 .PHONY: umu
@@ -93,10 +95,11 @@ else
 umu-install: version-install umu-dist-install umu-docs-install umu-bin-install
 endif
 
+
 ifeq ($(FLATPAK), xtrue)
 UMU_LAUNCHER_COMMAND = org.openwinecomponents.umu.launcher
 else
-UMU_LAUNCHER_COMMAND = $(DATADIR)/$(INSTALLDIR)/umu_run.py
+UMU_LAUNCHER_COMMAND = $(UMU_RUN_COMMAND)
 endif
 
 # umu-launcher is separate to allow control over installing the bin target

meson.build

@@ -4,12 +4,17 @@ project('umu',
     license_files : ['LICENSE'],
 )
 
+# 'libdir' is likely a more conformant target directory than 'datadir'
+umu_install_path = get_option('datadir') / meson.project_name()
+
 subproject('reaper',
     default_options : [
         'prefix=' + get_option('prefix'),
-        'bindir=' + get_option('prefix') / get_option('datadir') / meson.project_name(),
+        'bindir=' + get_option('prefix') / umu_install_path,
     ],
 )
 
 subdir('umu')
-subdir('docs')
+if not get_option('flatpak')
+    subdir('docs')
+endif

meson_options.txt

@@ -0,0 +1,2 @@
+option('flatpak', type : 'boolean', value : false, description: 'Build for Flatpak distribution')
+#option('user_install', type : 'boolean', value : false, description: 'Install under current user\'s home directory')

umu/meson.build

@@ -1,11 +1,11 @@
 git = find_program('git')
 
-umu_run_data = configuration_data()
-umu_run_data.set('INSTALL_PATH', get_option('prefix') / get_option('datadir') / meson.project_name())
+umu_run_cfg = configuration_data()
+umu_run_cfg.set('INSTALL_PATH', get_option('prefix') / umu_install_path / 'umu_run.py')
 configure_file(
     input : 'umu-run.in',
     output : 'umu-run',
-    configuration : umu_run_data,
+    configuration : umu_run_cfg,
     install : true,
     install_dir : get_option('bindir'),
     install_mode: 'rwxr-xr-x',
@@ -19,13 +19,13 @@ install_data(
         'umu_plugins.py',
         'umu_util.py',
     ],
-    install_dir: get_option('datadir') / meson.project_name(),
+    install_dir: umu_install_path,
 )
 install_data(
     [
         'umu_run.py',
     ],
-    install_dir: get_option('datadir') / meson.project_name(),
+    install_dir: umu_install_path,
     install_mode: 'rwxr-xr-x',
 )
 
@@ -43,7 +43,7 @@ configure_file(
     output : 'umu_version.json',
     configuration : umu_version_data,
     install : true,
-    install_dir: get_option('datadir') / meson.project_name(),
+    install_dir: umu_install_path,
 )
 
 subdir('umu-launcher')

umu/umu-launcher/meson.build

@@ -1,11 +1,18 @@
 fs = import('fs')
 
+umu_run_launcher_cfg = configuration_data()
+if get_option('flatpak')
+    umu_run_launcher_cfg.set('INSTALL_PATH', 'org.openwinecomponents.umu.launcher')
+else
+    umu_run_launcher_cfg.set('INSTALL_PATH', umu_run_cfg.get('INSTALL_PATH'))
+endif
+
 configure_file(
     input : 'umu-run.in',
     output : 'umu-run',
-    configuration : umu_run_data,
-    install : false,
-    install_dir : get_option('datadir') / meson.project_name() / fs.name(meson.current_source_dir()),
+    configuration : umu_run_launcher_cfg,
+    install : true,
+    install_dir : umu_install_path / fs.name(meson.current_source_dir()),
     install_mode: 'rwxr-xr-x',
 )
 
@@ -14,5 +21,5 @@ install_data(
         'compatibilitytool.vdf',
         'toolmanifest.vdf'
     ],
-    install_dir: get_option('datadir') / meson.project_name() / fs.name(meson.current_source_dir()),
+    install_dir: umu_install_path / fs.name(meson.current_source_dir()),
 )

umu/umu-launcher/umu-run.in

@@ -1,3 +1,2 @@
 #!/usr/bin/env sh
 @INSTALL_PATH@ "$@"
-

umu/umu-run.in

@@ -1,3 +1,2 @@
 #!/usr/bin/env sh
-@INSTALL_PATH@/umu_run.py "$@"
-
+@INSTALL_PATH@ "$@"