tarball: add help targets.#75

Open

redj wants to merge 6 commits intoecere:devfrom

redj:pr-build-feature-20200815-add-help-targets

Commits on Aug 16, 2020

tarball: use make's --no-print-directory flag. fix make's (sometimes like in artix linux) default behavior of always printing entering and leaving directory messages. we only want them when we spec…
redj
committed
tarball/Cleanfile: fix empty recipes as Cleanfile is a little different and some old recipies were left behind. { please squash with d3ded8f52e502a300d4ad7848df09dc6b4836f4a }
redj
committed
crossplatform.mk: add include guard variable CROSSPLATFORM_MK := defined.
redj
committed
tarball: use .NOTPARALLEL to allow 'make wipeclean all -j9' and 'make wipeclean all install -j9' to work properly instead of targets (especially wipeclean and all) interfering with eachother. note:…
redj
committed
tarball: build system: add variables printing and troubleshooting targets.
redj
committed
tarball: add help targets.
redj
committed