This brings libguestfs into line with other projects which have a
separate include/ directory for the public header.
It's also the case that <guestfs.h> has never particularly belonged in
the lib/ subdirectory. Some tools add -Ilib/ but they only need
<guestfs.h> and not any other headers from that directory, and
separating out the public header allows us to clean those up. This is
certainly the case for examples, and some language bindings and some
tests.
In future I'm hopeful we can use this as the basis to tease out other
dependencies, as a prelude to separating them out from the repo.
Like with the previous commit, this replaces instances of:
if (something_bad) {
fprintf (stderr, "%s: error message\n", guestfs_int_program_name);
exit (EXIT_FAILURE);
}
with:
if (something_bad)
error (EXIT_FAILURE, 0, "error message");
(except in a few cases were errno was incorrectly being ignored, in
which case I have fixed that).
It's slightly more complex than the previous commit because we must be
careful to:
- Remove the program name (since error(3) prints it).
- Remove any trailing \n character from the message.
Candidates for replacement were found using:
pcregrep --buffer-size 10M -M '\bfprintf\b.*\n.*\bexit\b' `git ls-files`
