Follow-up Comment #4, bug #58743 (project make):
That flag is only used in maintenance mode, which has a number of requirements
on the system AND ALSO adds a bunch of debugging code that will unquestionably
slow down your GNU make program.
I strongly advise that you not use maintenance mode to build any version you
want to use for anything other than developing GNU make itself. The
README.git file explains:
NOTE! This method builds GNU make in "maintainer mode". Make programs built
in this mode it will be slower, possibly MUCH slower: there are various
sanity checks enabled. Further this mode assumes a modern GCC, GNU
libc, and well-formed system headers and enables a high level of
warnings AND enables -Werror to turn warnings into failures.
If you want to build from Git with "maintainer mode" disabled, add
"MAKE_MAINTAINER_MODE=" to the make command line. If you want to turn
off the extra warning flags, add "MAKE_CFLAGS=" to the make command
line.
For example:
$ ./configure
$ make check MAKE_MAINTAINER_MODE= MAKE_CFLAGS=
$ make install
I'm not sure I want to update the configure.ac to test for the -C option
specifically and avoid it if not available, since it's only used in maintainer
mode.
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