According to ISO/IEC 9899:2011, section 7.22.4.4 (The exit function),
"the constant EXIT_FAILURE is the implementation independent way to
issue failures to exit(3)." Whereas EXIT_SUCCESS is the portable way
to return success.
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

According to ISO/IEC 9899:2011, section 6.7.6.3 (Function declarators
including prototypes): "The special case of an unnamed parameter of
type void as the only item in the list specifies that the function
has no parameters."
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Link with OpenSSL crypto library

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Do use the OpenSSL crypto library otherwise linking of SSL versions of the libraries fail due to missing symbols
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Proposed fix for OpenSSL compilation issue on OS X

CMake fixes on Microsoft Windows

add missing OPENSSL define to CMakeLists.txt

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Switch to cmake build on Travis CI so that it can, more easily, bypass lack of OpenSSL in newer versions of OS X
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Apple deprecated OpenSSL and stopped providing its headers on newer versions of OS X. These
changes adjust CMake build files so that they look for Brew's OpenSSL instead (or a custom
one if provided by the user).
For other systems, it uses CMake's own search to find headers/libraries.
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Ryan Pendleton <me@ryanp.me>

Signed-off-by: Ryan Pendleton <me@ryanp.me>

The pthread library have being added to Windows build. Which
causes linking problems on Visual Studio.
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

WIN32 is true when the target system is Microsoft Windows, 32 and
64 bits.

UNIX is true when the target system is Unix or Unix-like (i.e. Apple,
BSD and CYGWIN).
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Libraries need LIBRARY destination (for shared libraries), and
ARCHIVE for static libraries. Whereas executables need only
RUNTIME destination.
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>