Change non-portable echo -n to printf. --- mk/elftoolchain.tex.mk.orig 2012-08-27 22:39:09.000000000 -0500 +++ mk/elftoolchain.tex.mk 2021-07-02 10:41:45.000000000 -0500 @@ -88,7 +88,7 @@ .else all clean clobber depend install obj: .PHONY .SILENT - echo -n WARNING: make \"${.TARGET}\" in \"${.CURDIR:T}\" skipped: + printf "WARNING: make \"%s\" in \"%s\" skipped:" "${.TARGET}" "${.CURDIR:T}" .if defined(MKTEX) && ${MKTEX} == "yes" echo " missing tools." .else