The libsodium source code is now embedded in the Serval DNA sourcecode
as a git subtree, so configure.ac and Makefile.in now recurse into it as
part of the Serval DNA build.
This simplifies the build instructions and eliminates all external
dependencies on libsodium development files and operating system
packages, returning Serval DNA to a self-contained component whose only
external dependencies are standard system libraries.
Remove the build-libsodium.sh script, as it is no longer needed.
Add a new 'build-libsodium.sh' script and instructions in
doc/Development.md. Update the configure.in script to check for
libsodium headers and library, and print helpful messages if not
present.
./configure now fails if libsodium is not present.
Added libsodium to the list of dependencies in INSTALL.md.
Add a Debian apt-get command to doc/Development.md.
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.
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.
