From 22707789ec7b9ed6a9b9d821ea870354e2ff22d0 Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Fri, 27 Jul 2018 17:14:32 +0200
Subject: Generate %assets-root value.

---
 .gitignore    |  1 +
 config.scm    | 28 ----------------------------
 config.scm.in | 42 ++++++++++++++++++++++++++++++++++++++++++
 configure.ac  |  2 +-
 4 files changed, 44 insertions(+), 29 deletions(-)
 delete mode 100644 config.scm
 create mode 100644 config.scm.in

diff --git a/.gitignore b/.gitignore
index a617842..40685ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *.go
+config.scm
 configure
 config.log
 config.status
diff --git a/config.scm b/config.scm
deleted file mode 100644
index d52ae55..0000000
--- a/config.scm
+++ /dev/null
@@ -1,28 +0,0 @@
-;;; The Inevitable Game
-;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
-;;;
-;;; This program is free software: you can redistribute it and/or
-;;; modify it under the terms of the GNU General Public License as
-;;; published by the Free Software Foundation, either version 3 of the
-;;; License, or (at your option) any later version.
-;;;
-;;; This program is distributed in the hope that it will be useful,
-;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-;;; General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with this program.  If not, see
-;;; <http://www.gnu.org/licenses/>.
-
-(define-module (config)
-  #:export (%width
-            %height
-            %line-height
-            %message-margin))
-
-
-(define %width 320)
-(define %height 240)
-(define %line-height 12.5)
-(define %message-margin 4.0)
diff --git a/config.scm.in b/config.scm.in
new file mode 100644
index 0000000..43db6cf
--- /dev/null
+++ b/config.scm.in
@@ -0,0 +1,42 @@
+;;; The Inevitable Game
+;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU General Public License as
+;;; published by the Free Software Foundation, either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (config)
+  #:export (%width
+            %height
+            %line-height
+            %message-margin
+            %assets-root))
+
+
+(define %width 320)
+(define %height 240)
+(define %line-height 12.5)
+(define %message-margin 4.0)
+(define %assets-root
+  (let* ((prefix "@prefix@")
+         (datarootdir
+          (string-append prefix
+                         (string-drop "@datarootdir@"
+                                      (string-length "${prefix}"))))
+         (pkgdatadir
+          (string-append datarootdir
+                         (string-drop "@datadir@/@PACKAGE@"
+                                      (string-length "${datarootdir}")))))
+    (if (getenv "INEVITABLE_UNINSTALLED")
+        (getcwd)
+        pkgdatadir)))
diff --git a/configure.ac b/configure.ac
index fe92128..8f8c9c4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ AM_INIT_AUTOMAKE([color-tests -Wall -Wno-portability foreign])
 AM_SILENT_RULES([yes])
 
 AC_PATH_PROG([GUILE], [guile])
-AC_CONFIG_FILES([Makefile])
+AC_CONFIG_FILES([Makefile config.scm])
 AC_CONFIG_FILES([pre-inst-env], [chmod +x pre-inst-env])
 AC_CONFIG_FILES([scripts/inevitable], [chmod +x scripts/inevitable])
 
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