Makes testing Makefile is (Free|Open)BSDmake compatible easier on GNU/Linux
- Copy
GNUmakefileand the directorymkto your project directory. - Copy
Makefile.EXAMPLEto your project directory asMakefile.
GNUmakefile is a file that is only understood by GNU Make. So, when make is run, if you are on GNU/Linux, (or using gmake on another system,) it will attempt to run all common commands through Busybox to make sure your Makefile works with stripped down non-GNU coreutils.
However, when run on a system with only bsdmake (bmake on GNU/Linux), the file is totally ignored and busybox is not used.
All of your recipes must be written as:
myrecipe:
$(DOBEFORE) && (\
# …
)
# …
.include <mk/before.mk>Furthermore, it is highly recommended to enforce:
SHELL=/bin/shAt the top of the Makefile. This ensures compatibility with POSIX shells,
such as those in use by default on *BSD.
By default sed and awk will use generic versions, with their paths at $SED and $AWK, either through Busybox or through the system coreutils as appropriate. You can add any program busybox supports by editing the all recipe in GNUmakefile, and adding more $(MAKE) test_busybox_has lines. E.g., to add cat as $CAT, add the line:
all:
# …
$(eval export $(shell $(MAKE) WHAT=cat test_busybox_has))
# …I got this idea while working on yeslogic/glyph-names№3 and added BSDmakefile to that project in yeslogic/glyph-names№2.
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