From 0d4518dbcf9321df4d8cad6e97e562f34f7d31f4 Mon Sep 17 00:00:00 2001
From: Alois Wohlschlager <alois1@gmx-topmail.de>
Date: Thu, 1 Jul 2021 14:37:06 +0000
Subject: [PATCH] scripts: apply realpath for $0
References: https://github.com/4ti2/4ti2/pull/31

When $0 is a symlink, program execution would fail to find the right
directory. Fix that up.

The 4ti2 program names are quite generic (e.g. "output"), and hence
openSUSE has relegated them to /usr/libexec/4ti2, offering instead
prefixed symlinks in /usr/bin, e.g. /usr/bin/4ti2_groebner ->
/usr/libexec/4ti2/groebner.
---
 src/groebner/script.template    |    2 +-
 src/groebner/script.template.in |    2 +-
 src/zsolve/graver.template      |    2 +-
 src/zsolve/hilbert.template     |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

Index: 4ti2-1.6.9/src/groebner/script.template
===================================================================
--- 4ti2-1.6.9.orig/src/groebner/script.template
+++ 4ti2-1.6.9/src/groebner/script.template
@@ -21,7 +21,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
 
 # We locate where this script is so we can call the executables.
-SCRIPT=`which "$0"`
+SCRIPT=$(realpath $(which "$0"))
 DIR=`dirname "$SCRIPT"`
 FUNCTION=`basename "$SCRIPT"`
 
Index: 4ti2-1.6.9/src/groebner/script.template.in
===================================================================
--- 4ti2-1.6.9.orig/src/groebner/script.template.in
+++ 4ti2-1.6.9/src/groebner/script.template.in
@@ -21,7 +21,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
 
 # We locate where this script is so we can call the executables.
-SCRIPT=`which "$0"`
+SCRIPT=$(realpath $(which "$0"))
 DIR=`dirname "$SCRIPT"`
 FUNCTION=`basename "$SCRIPT"`
 
Index: 4ti2-1.6.9/src/zsolve/graver.template
===================================================================
--- 4ti2-1.6.9.orig/src/zsolve/graver.template
+++ 4ti2-1.6.9/src/zsolve/graver.template
@@ -2,7 +2,7 @@
 
 # We locate where this script is so we can call the executable zsolve which
 # should be in the same directory as this script.
-SCRIPT=`which "$0"`
+SCRIPT=$(realpath $(which "$0"))
 SCRIPTDIR=`dirname "$SCRIPT"`
 EXECUTABLE=zsolve
 
Index: 4ti2-1.6.9/src/zsolve/hilbert.template
===================================================================
--- 4ti2-1.6.9.orig/src/zsolve/hilbert.template
+++ 4ti2-1.6.9/src/zsolve/hilbert.template
@@ -2,7 +2,7 @@
 
 # We locate where this script is so we can call the executable zsolve which
 # should be in the same directory as this script.
-SCRIPT=`which "$0"`
+SCRIPT=$(realpath $(which "$0"))
 SCRIPTDIR=`dirname "$SCRIPT"`
 EXECUTABLE=zsolve