In about a week I'll be building make 4.3 for rawhide. As part of
this, I'll be cleaning up some old Fedora-specific patches that
shouldn't be needed any more (ha!). In addition, please note any make
4.3-specific changes in its NEWS file:
http://git.savannah.gnu.org/cgit/make.git/tree/NEWS
This build will provide valuable testing time for make 4.3 before the
beta decision point.
Change Request:
https://fedoraproject.org/wiki/Changes/MAKE43
Specific incompatibility callouts:
* WARNING: Backward-incompatibility!
Number signs (#) appearing inside a macro reference or function invocation
no longer introduce comments and should not be escaped with backslashes:
thus a call such as:
foo := $(shell echo '#')
is legal. Previously the number sign needed to be escaped, for example:
foo := $(shell echo '\#')
Now this latter will resolve to "\#". If you want to write makefiles
portable to both versions, assign the number sign to a variable:
H := \#
foo := $(shell echo '$H')
This was claimed to be fixed in 3.81, but wasn't, for some reason.
To detect this change search for 'nocomment' in the .FEATURES variable.
* WARNING: Backward-incompatibility!
Previously appending using '+=' to an empty variable would result in a value
starting with a space. Now the initial space is only added if the variable
already contains some value. Similarly, appending an empty string does not
add a trailing space.