From e937cf43540a47c8163a3f590b2415487a7b8f0a Mon Sep 17 00:00:00 2001
From: Richard Kreckel <kreckel@ginac.de>
Date: Sun, 28 Jun 2020 16:07:30 +0200
Subject: [PATCH] [build] Check for python3 command, not python.

PEP 394 does not require the python command to be installed.
---
 configure.ac | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 0a178069..32ba1485 100644
--- a/configure.ac
+++ b/configure.ac
@@ -59,10 +59,10 @@ dnl Check for stuff needed for building the GiNaC interactive shell (ginsh).
 AC_CHECK_HEADERS(unistd.h)
 GINAC_HAVE_RUSAGE
 GINAC_READLINE
-dnl Python is necessary for building function.{cpp,h}
-AC_PATH_PROG(PYTHON, python, "")
-AS_IF([test -z "$PYTHON" -a ! -f "$srcdir/ginac/function.cpp"],
-      [AC_MSG_ERROR([GiNaC will not compile because Python is missing])])
+dnl Python3 is necessary for building function.{cpp,h}
+AC_PATH_PROG(PYTHON3, python3, "")
+AS_IF([test -z "$PYTHON3" -a ! -f "$srcdir/ginac/function.cpp"],
+      [AC_MSG_ERROR([GiNaC will not compile because Python3 is missing])])
 
 dnl Check for dl library (needed for GiNaC::compile).
 GINAC_EXCOMPILER
-- 
2.45.1