Modularize cmake build config

Builds/CMake/RippledSettings.cmake

@@ -0,0 +1,114 @@
+#[===================================================================[
+   declare user options/settings
+#]===================================================================]
+
+option (assert "Enables asserts, even in release builds" OFF)
+option (unity "Creates a build based on unity sources. This is the default" ON)
+if (is_gcc OR is_clang)
+  option (coverage "Generates coverage info." OFF)
+  option (profile "Add profiling flags" OFF)
+  set (coverage_test "" CACHE STRING
+    "On gcc & clang, the specific unit test(s) to run for coverage. Default is all tests.")
+  if (coverage_test AND NOT coverage)
+    set (coverage ON CACHE BOOL "gcc/clang only" FORCE)
+  endif ()
+  option (coverage_core_only
+    "Include only src/ripple files when generating coverage report. \
+    Set to OFF to include all sources in coverage report."
+    ON)
+else ()
+  set (profile OFF CACHE BOOL "gcc/clang only" FORCE)
+  set (coverage OFF CACHE BOOL "gcc/clang only" FORCE)
+endif ()
+if (is_linux)
+  option (BUILD_SHARED_LIBS "build shared ripple libraries" OFF)
+  option (static "link protobuf, openssl, libc++, and boost statically" ON)
+  option (perf "Enables flags that assist with perf recording" OFF)
+  option (use_gold "enables detection of gold (binutils) linker" ON)
+else ()
+  # we are not ready to allow shared-libs on windows because it would require
+  # export declarations. On macos it's more feasible, but static openssl
+  # produces odd linker errors, thus we disable shared lib builds for now.
+  set (BUILD_SHARED_LIBS OFF CACHE BOOL "build shared ripple libraries - OFF for win/macos" FORCE)
+  set (static ON CACHE BOOL "static link, linux only. ON for WIN/macos" FORCE)
+  set (perf OFF CACHE BOOL "perf flags, linux only" FORCE)
+  set (use_gold OFF CACHE BOOL "gold linker, linux only" FORCE)
+endif ()
+if (is_clang)
+  option (use_lld "enables detection of lld linker" ON)
+else ()
+  set (use_lld OFF CACHE BOOL "try lld linker, clang only" FORCE)
+endif ()
+option (jemalloc "Enables jemalloc for heap profiling" OFF)
+option (werr "treat warnings as errors" OFF)
+option (local_protobuf
+  "Force use of a local build of protobuf instead of system version." OFF)
+
+# this one is a string and therefore can't be an option
+set (san "" CACHE STRING "On gcc & clang, add sanitizer instrumentation")
+set_property (CACHE san PROPERTY STRINGS ";undefined;memory;address;thread")
+if (san)
+  string (TOLOWER ${san} san)
+  set (SAN_FLAG "-fsanitize=${san}")
+  set (SAN_LIB "")
+  if (is_gcc)
+    if (san STREQUAL "address")
+      set (SAN_LIB "asan")
+    elseif (san STREQUAL "thread")
+      set (SAN_LIB "tsan")
+    elseif (san STREQUAL "memory")
+      set (SAN_LIB "msan")
+    elseif (san STREQUAL "undefined")
+      set (SAN_LIB "ubsan")
+    endif ()
+  endif ()
+  set (_saved_CRL ${CMAKE_REQUIRED_LIBRARIES})
+  set (CMAKE_REQUIRED_LIBRARIES "${SAN_FLAG};${SAN_LIB}")
+  check_cxx_compiler_flag (${SAN_FLAG} COMPILER_SUPPORTS_SAN)
+  set (CMAKE_REQUIRED_LIBRARIES ${_saved_CRL})
+  if (NOT COMPILER_SUPPORTS_SAN)
+    message (FATAL_ERROR "${san} sanitizer does not seem to be supported by your compiler")
+  endif ()
+endif ()
+set (container_label "" CACHE STRING "tag to use for package building containers")
+option (packages_only
+  "ONLY generate package building targets. This is special use-case and almost \
+   certainly not what you want. Use with caution as you won't be able to build \
+   any compiled targets locally." OFF)
+option (have_package_container
+  "Sometimes you already have the tagged container you want to use for package \
+   building and you don't want docker to rebuild it. This flag will detach the \
+   dependency of the package build from the container build. It's an advanced \
+   use case and most likely you should not be touching this flag." OFF)
+
+# the remaining options are obscure and rarely used
+option (beast_no_unit_test_inline
+  "Prevents unit test definitions from being inserted into global table"
+  OFF)
+# NOTE - THIS OPTION CURRENTLY DOES NOT COMPILE :
+# TODO: fix or remove
+option (verify_nodeobject_keys
+  "This verifies that the hash of node objects matches the payload. \
+  This check is expensive - use with caution."
+  OFF)
+option (single_io_service_thread
+  "Restricts the number of threads calling io_service::run to one. \
+  This can be useful when debugging."
+  OFF)
+option (boost_show_deprecated
+  "Allow boost to fail on deprecated usage. Only useful if you're trying\
+  to find deprecated calls."
+  OFF)
+option (beast_hashers
+  "Use local implementations for sha/ripemd hashes (experimental, not recommended)"
+  OFF)
+
+if (WIN32)
+  option (beast_disable_autolink "Disables autolinking of system libraries on WIN32" OFF)
+else ()
+  set (beast_disable_autolink OFF CACHE BOOL "WIN32 only" FORCE)
+endif ()
+if (coverage)
+  message (STATUS "coverage build requested - forcing Debug build")
+  set (CMAKE_BUILD_TYPE Debug CACHE STRING "build type" FORCE)
+endif ()