mkenginecfg: fetch $(python) from the Makefile

Makefile.static

@@ -115,7 +115,7 @@ $(MAIN_STAGE) : $(MAIN_SRC) $(builddir)Makefile
 
 $(ENGINECFG_STAGE) : $(srcdir)mkenginecfg $(builddir)Makefile.vars
 	@$(info) 'Making enginecfg: mostly counting processors'
-	@"$(srcdir)mkenginecfg" "$(srcdir)" "$(builddir)" "$(HISCORE_FILE)"
+	@"$(srcdir)mkenginecfg" "$(python)" "$(srcdir)" "$(builddir)" "$(HISCORE_FILE)"
 
 
 $(builddir)module-symlinks : $(builddir)Makefile.vars $(srcdir)mk-symlinks

mkenginecfg

 #!/bin/sh
 
-# ./mkenginecfg srcdir builddir hiscorefile
 
+if [ $# -ne 4 ]; then
+cat >&2 <<__EOF__
+# ./mkenginecfg python_interpreter srcdir builddir hiscorefile
 # This shell script is a wrapper around a Python script that will be spit
 # out.
+__EOF__
+exit 1
+fi
 
-srcdir=$1
-builddir=$2
-hiscorefile=$3
+python=$1
+srcdir=$2
+builddir=$3
+hiscorefile=$4
 
 userfile="${builddir}enginecfg.user"
 fallbackfile="${srcdir}enginecfg.fallback"
@@ -84,6 +90,6 @@ done
 
 oldpwd=`pwd`
 cd "$srcdir"
-python "$pyfile" "$ncpus" "$hiscorefile" > "$outfile" \
+$python "$pyfile" "$ncpus" "$hiscorefile" > "$outfile" \
     || cp "$fallbackfile" "$outfile"
 cd "$oldpwd"