This adds a cmake module, FindABIMap, which looks for abimap and
provides functions to generate a symbol version linker script.
The module can be included using find_package(ABIMap).
This also adds the option to compile with symbol versioning. The symbol
list is obtained from the header files by filtering those marked with
the LIBSSH_API modifier.
Such symbols are used as input to generate the version script used by
the linker. The version script is automatically updated as new symbols
marked with LIBSSH_API are added to the header files.
If any symbol is removed, the build will fail due to break in the ABI.
Symbol versioning is enabled by default if abimap has been found. It is
disabled in non-UNIX platforms. It can be disabled by passing
"-DWITH_SYMBOL_VERSIONING=OFF" option to cmake.
Pair-Programmed-With: Andreas Schneider <asn@cryptomilk.org>
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Summary:
This patch adds support for mbedTLS as a crypto backend for libssh.
mbedTLS is an SSL/TLS library that has been designed to mainly be used
in embedded systems. It is loosely coupled and has a low memory
footprint. mbedTLS also provides a cryptography library (libmbedcrypto)
that can be used without the TLS modules.
The patch is unfortunately quite big, since several new files had to
be added.
DSA is disabled at compile time, since mbedTLS doesn't support DSA
Patch review and feedback would be appreciated, and if any issues or
suggestions appear, I'm willing to work on them.
Signed-off-by: Juraj Vijtiuk <juraj.vijtiuk@sartura.hr>
Test Plan:
* The patch has been tested with a Debug and MinSizeRel build, with
libssh unit tests, client tests and the pkd tests.
* All the tests have been run with valgrind's memcheck, drd and helgrind
tools.
* The examples/samplessh client works when built with the patch.
Reviewers: asn, aris
Subscribers: simonsj
Differential Revision: https://bugs.libssh.org/D1
