move to new build system

cmake/libraries/libbitcoinsystem.cmake

@@ -0,0 +1,72 @@
+if(PROJECT_ENABLE_LIBBITCOIN_SYSTEM)
+  if(PROJECT_BUILD)
+    add_definitions(
+      -DPROJECT_ENABLE_LIBBITCOIN_SYSTEM
+      -DBC_STATIC
+      -DECMULT_GEN_PREC_BITS=4
+      -DECMULT_WINDOW_SIZE=15
+      -DWITH_ICU
+    )
+
+    set(LIBBITCOIN_SYSTEM_ROOT 
+      ${PROJECT_BUILD_DIR}/external/src/libbitcoinsystem_project
+    )
+
+    include_directories(SYSTEM BEFORE
+      ${LIBBITCOIN_SYSTEM_ROOT}/include
+    )
+
+    set(PROJECT_ADDITIONAL_SOURCES
+      ${PROJECT_ADDITIONAL_SOURCES}
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/math/external/*.c
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/formats/*.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/config/*.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/math/*.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/unicode/*.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/utility/string.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/wallet/dictionary.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/wallet/electrum.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/wallet/electrum_dictionary.cpp
+      ${LIBBITCOIN_SYSTEM_ROOT}/src/wallet/mnemonic.cpp
+    )
+
+    if(PROJECT_IS_MINGW)
+      pkg_check_modules(ICU_I18N icu-i18n)
+      pkg_check_modules(ICU_IO icu-io)
+      pkg_check_modules(ICU_UC icu-uc)
+
+      link_libraries(
+        ${ICU_I18N_LINK_LIBRARIES}
+        ${ICU_IO_LINK_LIBRARIES}
+        ${ICU_UC_LINK_LIBRARIES}
+      )
+    else()
+      link_libraries(
+        icui18n
+        icuuc
+        icudata
+      )
+    endif()
+  else()
+    ExternalProject_Add(libbitcoinsystem_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/libbitcoin-system-${LIBBITCOIN_SYSTEM_VERSION}.tar.gz
+      URL_HASH SHA256=0d10d79472e914620223f1ddb9396b0fa92ae5eb0b31acc14b9aa634a01d78b6
+      CONFIGURE_COMMAND echo "No configure"
+      BUILD_COMMAND echo "No build"
+      INSTALL_COMMAND echo "No install"
+    )
+
+    set(PROJECT_DEPENDENCIES 
+      ${PROJECT_DEPENDENCIES}
+      libbitcoinsystem_project
+    )
+
+    if(NOT PROJECT_IS_MINGW_UNIX)
+      add_dependencies(libbitcoinsystem_project 
+        boost_project
+        secp256k1_project
+      )
+    endif()
+  endif()
+endif()