Jan 6, 2019 · = called recursive expanded variable or lazy expanded variable. in below example, when make read this line. VAR1 = $(VAR1) + 100 make just stored value from righthand side …

May 29, 2013 · The trick here is that you've got an obscure combination of two different syntaxes. The make(1) syntax is the use of an action starting with @, which is simply not to echo the …

Jul 10, 2010 · From Managing Projects with GNU Make, 3rd Edition, p. 16 (it's under GNU Free Documentation License): Automatic variables are set by make after a rule is matched. They …

Aug 2, 2009 · -> ls -l $(which gmake make) lrwxrwxrwx 1 root root 4 Jun 5 2007 /usr/bin/gmake -> make -rwxr-xr-x 1 root root 168976 Jul 13 2006 /usr/bin/make gmake stands for GNU make. …

+ means 'execute this command under make -n' (or 'make -t' or 'make -q') when commands are not normally executed. See also the POSIX specification for make and also §9.3 of the GNU …

Let me refer to GNU Make manual "Setting variables" and "Flavors", and add some comments. Recursively expanded variables. The value you specify is installed verbatim; if it contains …

Then GNU cloned it. Then GNU enhanced it _extensively, so much so that they had to abandon backward compatibility. The GNU version is so much better that very few use the original Unix …

You could create a vars rule in your make file, like this: dispvar = echo $(1)=$($(1)) ; echo .PHONY: vars vars: @$(call dispvar,SOMEVAR1) @$(call dispvar,SOMEVAR2) There are …

Aug 16, 2016 · Each line of a make recipe is handed to the shell independently. Thus, if you want to execute something in the directory /root then the recipe should be something like cd /root/ …

For GNU make >= 3.81, which was introduced in 2006. ROOT_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST)))) MAKEFILE_LIST changes as include files come in and out of scope. …