This could remove recurring of the same statement for include directories.
Instead of this removals, apps/* and tests should have include path that
had been provided by INTERFACE_INCLUDE_DIRECTORIES of target libs and
internal static libs.
CMAKE_HOST_ describes the host system not the target. For cross compilation to work the actual target system should be used for making decisions in CMake.
Internally LIBRESSL_SKIP_INSTALL, if not set becomes ENABLE_LIBRESSL_INSTALL so this by default is enabled. defining LIBRESSL_SKIP_INSTALL before hand will disable all install() rules.
This is useful if another project includes and links to this statically.
I chose to add a prefix to avoid potential name collision because the options are cached globally.
If the installation is skipped, maybe it should also disable building apps? I didn't do that.
- add cmake build options as configure provides
* -DENABLE_ASM (default ON)
* -DENABLE_EXTRATESTS (default OFF)
* -DENABLE_NC (default OFF)
* -DOPENSSLDIR (default ${CMAKE_INSTALL_PREFIX}/etc/ssl)
- add biotest and pidwraptest if ENABLE_EXTRATESTS is ON
- add compiler flag `-fno-common` if CMAKE_SYSTEM_NAME is Darwin
to prevent link error Undefined symbols "_OPENSSL_ia32cap_P"
- modify structure of CMakeLists.txt under apps/
* move apps/CMakeLists.txt to apps/openssl/ since this is for openssl build
* create new apps/nc/CMakeLists.txt for nc build
* modify apps/CMakeLists.txt just add_subdirectory()
- add checking and compile of arc4random_uniform()
- add installing man files, openssl.1 and nc.1
