diff -up ./Makefile.orig ./Makefile

--- ./Makefile.orig	2019-12-01 19:30:26.328409930 +0200

+++ ./Makefile	2019-12-01 19:30:48.760629211 +0200

@@ -1,13 +1,13 @@

 default: basic

 basic: jadetex.ltx

-	tex jadetex.ins

+	etex jadetex.ins

 jadetex.fmt: basic

-	tex -ini -progname=jadetex "&latex" jadetex.ini

+	etex -ini -progname=jadetex "&latex" jadetex.ini

 pdfjadetex.fmt: basic

-	pdftex -ini -progname=pdfjadetex "&pdflatex" pdfjadetex.ini

+	pdfetex -ini -progname=pdfjadetex "&pdflatex" pdfjadetex.ini

 install: jadetex.fmt pdfjadetex.fmt

 	(TT=$$DESTDIR/`kpsewhich -expand-var '$$TEXMFMAIN'`; \