On OS-X (BSD), nc6 appears to be the only available variant of
netcat that matches the Linux version.
Introduces a guard function to catch invocations of nc6 when
setup_netcat6 has not been called in the fixture. Introduce
guard functions to prevent invocations of nc and netcat.
Use GNU grep, sed and awk instead of BSD variants. Developers will have
to install these using a package manager like homebrew. Updated the
INSTALL.md and doc/Development.md tech docs with instructions.
Was failing because recvmsg(2) on OSX does not nul terminate the
pathname of local (AF_UNIX) sockets in the returned sockaddr buffer.
Zerofilling the buffer before calling recvmsg() does the trick.
In the process, improved debug and error logging, replacing
recvwithttl() with recv_message() and recv_message_frag(). The
mdp_net.c source file was retired.
Were early 2012 vintage.
This will help Debian and other distribution packagers, who rely on
having up-to-date architecture detection in every package when built.
Henceforward, aclocal.m4 will be generated by the 'autoreconf' command.
The 'autoreconf -f -i' command may now emit a warning "Unsupported
attribute section, the test may fail" on some systems, but it will still
generate the proper aclocal.m4 and ./configure files. To suppress this
warning, simply invoke autoreconf with '-I m4' argument:
autoreconf -f -i -I m4
The INSTALL.md has been updated accordingly, and a new 'Notes for
Developers' technical document added, explaining the use of aclocal and
autoreconf, and documenting that these warning messages are of no
concern.
These macros copied in from the Autoconf Macro Archive were missing
support for the following attributes:
- AX_GCC_VAR_ATTRIBUTE() for __attribute__(section("..."))
- AX_GCC_FUNC_ATTRIBUTE() for __attribute__(returns_nonnull)
This commit fixes them. (The versions in aclocal.m4 were already fixed,
but aclocal.m4 is about to be removed from version control.)
