Problem: can't install additional files via project.xml

README.txt

@@ -432,6 +432,28 @@ Using autotools or CMake, you can specify --with-drafts to enable draft APIs, an
 make uninstall
 ```
 
+## Additional files
+Installation of third party files is a *hard* problem. It is not platform
+independent, became hard to maintain and impossible to use correctly. One of
+zproject's goals is a simplicity. There is a simple installation model
+
+### Design goals
+* KISS, less configuration options the better
+* no conditionals in the model, those SHALL be handled in background
+* each option solves a REAL problem, avoid extending it because you can
+
+### Example
+```
+    <main name = "MAIN">
+        <install type = "systemd-tmpfiles" />
+    </main>
+```
+
+This will add install information about systemd tmpfiles.d configuration files
+to autotools, packaging, and so. The resulting file
+/usr/lib/tmpfiles.d/MAIN.conf will be installed only if configure was called
+with --with-systemd-units.
+
 ## Notes for Writing Language Targets
 
 This is the general form of a target:

zproject.gsl

@@ -172,6 +172,9 @@ gsl from "zproject_bench.gsl"
 gsl from "zproject_git.gsl"
 gsl from "zproject_valgrind.gsl"
 
+# zinstall must run before all the targets
+gsl from "zproject_install.gsl"
+
 #   Load all targets
 gsl from "zproject_android.gsl"
 gsl from "zproject_autotools.gsl"

zproject_autotools.gsl

@@ -635,6 +635,8 @@ AM_COND_IF([WITH_SYSTEMD_UNITS],
 
 .endif
 
+.zinstall_include ("builds/zinstall/configure.ac")
+
 AC_OUTPUT
 
 # Print configure summary and list make options
@@ -1073,6 +1075,8 @@ coverage: src/$(project.prefix)_selftest
 \t@echo "call make clean && configure --with-gcov to enable code coverage"
 \t@exit 1
 endif
+.zinstall_include ("builds/zinstall/Makemodule.am")
+
 
 $(project.GENERATED_WARNING_HEADER:)
 .#

zproject_debian.gsl

@@ -220,6 +220,7 @@ usr/bin/$(bin.name)
 etc/$(project.name)/$(main.name).cfg
 lib/systemd/system/$(main.name){,@*}.{service,*}
 .   endfor
+.zinstall_include ("builds/zinstall/$(project.name).install")
 .endif
 
 .if project.exports_classes

zproject_install.gsl

@@ -0,0 +1,52 @@
+#   Generate install files snippets for zproject
+#
+#   This is a code generator built using the iMatix GSL code generation
+#   language. See https://github.com/imatix/gsl for details.
+#
+#   Copyright (c) the Contributors as noted in the AUTHORS file.
+#   This file is part of zproject.
+#
+#   This Source Code Form is subject to the terms of the Mozilla Public
+#   License, v. 2.0. If a copy of the MPL was not distributed with this
+#   file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+function zinstall_include (filename)
+    if file.exists ("$(my.filename:)")
+        input = file.open ("$(my.filename:)")
+        xline = file.read (input)
+        while defined (xline)
+            >$(string.replace (xline, "\n|"))
+            xline = file.read (input)?
+        endwhile
+    endif
+endfunction
+
+echo "###### zinstall #####"
+directory.create ("builds/zinstall")
+for project.main where defined (main->install)
+    for install
+        if install.type = "systemd-tmpfiles"
+
+            output "builds/zinstall/configure.ac"
+>AM_COND_IF([WITH_SYSTEMD_UNITS],
+>    [AC_CONFIG_FILES([
+>                 src/$(main.name).conf
+>    ])],
+>    [])
+            output "builds/zinstall/Makemodule.am"
+>if WITH_SYSTEMD_UNITS
+>$(main.name:c)_tmpfiles_ddir = /usr/lib/tmpfiles.d/
+>$(main.name:c)_tmpfiles_d_DATA = src/$(main.name).conf
+>endif #WITH_SYSTEMD_UNITS
+
+            output "builds/zinstall/$(project.name).spec"
+>%dir /usr/lib/tmpfiles.d/
+>%config /usr/lib/tmpfiles.d/$(main.name).conf
+
+            output "builds/zinstall/$(project.name).install"
+>usr/lib/tmpfiles.d/$(main.name).conf
+
+        endif #systemd-tmpfiles
+    endfor
+endfor

zproject_redhat.gsl

@@ -214,6 +214,7 @@ find %{buildroot} -name '*.la' | xargs rm -f
 .if etc_exists ?= 1
 %dir %{_sysconfdir}/$(project.name)
 .endif
+.zinstall_include ("builds/zinstall/$(project.name).spec")
 .if systemd ?= 1
 %if 0%{?suse_version} > 1315
 %post