Please use the mailing lists with requests for support rather than direct email, since there are many people who can assist even when I'm not available. Thanks!
On Wed, 2025-04-02 at 02:54 -0400, Balaa wrote: > We need a clarification for whitespace issue while using > MAKEFILE_LIST. > > In GNU make version 4.2.1, > ——————— > $vim Makefile > all: > echo “:$(MAKEFILE_LIST)” > > $make > echo : Makefile > : Makefile > Here, after colon that white space observed. > > But in GNU make version 4.3 > $make > echo :Makefile > :Makefile > Here, that whitespace not observed. Due to that we are facing > compilation conflict between those GNU versions. Could you please > share the details of this issue resolved patch to us. This is most likely due to this change from the NEWS file: https://git.savannah.gnu.org/cgit/make.git/tree/NEWS?h=4.3#n32 * 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. You don't explain how this extra space causes you problems and I can't really think of a way it could matter, but if you want a workaround that gives the same result in all versions you can use $(strip ...) to remove whitespace everywhere: echo “:$(strip $(MAKEFILE_LIST))” Or, I guess, if you really want a space before it you can just always add one.
