On Sunday 2022-03-27 23:22, Karl Berry wrote:
>It seems the basic inconsistency is whether CPPFLAGS is considered a >"user variable" or not. In earlier eras, it wasn't [...] In earlier eras of what exactly? As for make, it never made a distinction between user variables or otherwise, at least that's the way make comes across. Some software will just break on `make CFLAGS=-O3` and others will work to compile. As for automake, AM_CPPFLAGS was introduced at the same time as AM_CFLAGS as per the git log. So CPPFLAGS always was a user variable. >[more on CFLAGS<->CPPFLAGS order] I went to the GNU make git repo to check on CPPFLAGS; it appeared first in documentation rather than source (which seems like a history import mishap), but even back then in '94, the documentation was inconsistent, sometimes providing example descriptions where CPPFLAGS comes after CFLAGS/FFLAGS/etc., and sometimes reversed.
