--- src/libs/libpng-1.2.54/scripts/README.txt.orig	2020-07-10 02:58:20.000000000 +1000
+++ src/libs/libpng-1.2.54/scripts/README.txt	2020-08-21 16:20:18.771643000 +1000
@@ -22,6 +22,7 @@
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
                        gcc, creates libpng12.so.0.1.2.54)
  makefile.freebsd  =>  FreeBSD makefile
+ makefile.bsdsunix =>  BSDSUniX makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.gccmmx   =>  Generic gcc makefile previously using MMX code
  makefile.hpgcc    =>  HPUX makefile using gcc