This commit makes all the binary CMake options (i.e. yes/no) conform to one
string convention: "yes/no." Previously, we had a mixture of yes/no and ON/OFF.
- Begin adding options to enable/disable different features.
- Increase minimum CMake version to 3.2.
- Support installation of the built files.
- Add checks for necessary include files, functions etc.
- Generate options.h and config.h.
- Use GNUInstallDirs to support installation, which is designed to be somewhat
cross-platform.
- Export wolfssl CMake target during installation, so others using CMake can
link against wolfssl easily.
- Disallow in-source builds.
- Place the generation of BUILD_* flags (controlled with AM_CONDITIONALs
in configure.ac) in a separate function in functions.cmake,
generate_build_flags.
- Implement the logic to conditionally add source files from
src/include.am in a function in functions.cmake, generate_lib_src_list.
- Exclude tls_bench from Windows. Doesn't compile with MSVC. WIP.
- Update INSTALL with latest CMake build instructions.
- Add a cmake/include.am to ensure CMake files get added to the distribution.
