diff '--color=auto' -r -U3 gle-manual-4.3.6.orig/Makefile.gcc gle-manual-4.3.6/Makefile.gcc
--- gle-manual-4.3.6.orig/Makefile.gcc	2025-04-05 03:19:08.000000000 +0700
+++ gle-manual-4.3.6/Makefile.gcc	2025-05-14 11:54:38.311675981 +0700
@@ -52,7 +52,7 @@
 
 ifneq ($(UNAME_S),Darwin)
 pdf: defs.tex
-	pdflatex gle-manual.tex
+	latexmk -pdf gle-manual.tex
 else
 # define the APPLE command to elimnate the countour plots for macOS in utilities\countour.tex
 # the coutour figures cause a seg fault in GLE and this workaround eliminates
@@ -63,7 +63,7 @@
 
 
 dvi:
-	latex gle-manual.tex
+	latexmk -dvi gle-manual.tex
 
 index:
 	makeindex gle-manual