For now, this module is enabled whenever the relay module is
enabled, and disabled whenever the relay module is disabled.  Though
they are logically separate, the use cases for running one without
the other are rare enough that we don't really want to support
compiling them independently.

Python 2 will be end-of-life as of 1 Jan 2020, so we can finally
stop supporting it.  As a first step, we should make our configure
script stop accepting python 2 as something acceptable to run our
tests with.

Closes ticket 32608.

The "if-present" clause of AC_ARG_ENABLE() sets enable_{lzma,zstd},
so we don't need to set it. The "if-not-present" clause needs to set
enable_{lzma,zstd}, rather than just {lzma,zstd}.

The rest of the script only ever checks for enable_{lzma,zstd} = no,
so these changes do not actually change the behaviour of configure.

Fixes bug 32401.

Up till now, we have warned about all missing documentation, which
meant that we could never make doxygen warnings fatal.  This has led
to our doxygen output getting full of errors several times in the
past.

This commit changes our approach to doxygen warnings: missing
documentation warnings are only on when the user asks for them with
--enable-missing-doc-warnings.  When that option is not present,
doxygen respects the --enable-fatal-warnings flag.

Closes ticket 32385.

This reverts commit 4c2c9890.

Our @top_srcdir@ directory can contain "..", which confuses doxygen
when it tries to make references to directories.  Using
@abs_top_srcdir@ has the same problem.  Instead, we should use our
@SRCDIR@ configuration variable, which is canonicalized.

And update the changes file to be more specific.

Part of 32191.

eighthave authored Oct 29, 2019 and teor committed Nov 05, 2019

The current pkg-config setup has no sense of whether it is cross-compiling,
so it will detect things on the build system that are not present or are
wrong for the host system.  This forces the cross-compiling build to only
look for pkg-config .pc files in --prefix.

A version of this has been the setup for many years with the Android builds.

Fixes #32191
Signed-off-by: Hans-Christoph Steiner <hans@eds.org>

Closes #32266
Signed-off-by: David Goulet <dgoulet@torproject.org>

Part of 32123.

The Makefile and C defines don't actually do anything yet.

Part of 32123.

Fixes bug 32124; bugfix on 0.3.5.1-alpha.

Fixes bug 32124; bugfix on 0.2.0.20-rc.

Fixes bug 32134; bugfix on 0.3.4.1-alpha.

Part of 32123.

David Goulet authored Aug 08, 2019 and Nick Mathewson committed Oct 17, 2019

Signed-off-by: David Goulet <dgoulet@torproject.org>

Part of 31922.

When pkg-config is not installed, or a library that depends on
pkg-config is not found, tell the user what to do to fix the
problem.

Fixes bug 31922; bugfix on 0.3.1.1-alpha.

Explain what the optional Directory Authority module is, and what
happens when it is disabled.

Fixes bug 31825; bugfix on 0.3.4.1-alpha.