1 files changed, 168 insertions, 0 deletions

diff --git a/externals/cryptopp/CMakeLists.txt b/externals/cryptopp/CMakeLists.txt
new file mode 100644
index 000000000..bbac71bb9
--- /dev/null
+++ b/externals/cryptopp/CMakeLists.txt
@@ -0,0 +1,168 @@
+# The CMakeLists.txt shipped with cryptopp pollutes our option list and installation list,
+# so we made our own one. This is basically a trimmed down version of the shipped CMakeLists.txt
+# The differences are:
+#  - removed support for legacy CMake versions
+#  - removed support for 32-bit
+#  - removed rdrand module.asm as a workaround for an issue (see below)
+#  - added prefix "CRYPTOPP_" to all option names
+#  - disabled testing
+#  - disabled installation
+#  - disabled documentation
+#  - configured to build a static library only
+
+include(TestBigEndian)
+include(CheckCXXCompilerFlag)
+
+#============================================================================
+# Settable options
+#============================================================================
+
+option(CRYPTOPP_DISABLE_ASM "Disable ASM" OFF)
+option(CRYPTOPP_DISABLE_SSSE3 "Disable SSSE3" OFF)
+option(CRYPTOPP_DISABLE_AESNI "Disable AES-NI" OFF)
+option(CRYPTOPP_DISABLE_CXXFLAGS_OPTIMIZATIONS "Disable CXXFLAGS optimizations" OFF)
+
+#============================================================================
+# Internal compiler options
+#============================================================================
+
+# Only set when cross-compiling, http://www.vtk.org/Wiki/CMake_Cross_Compiling
+if (NOT (CMAKE_SYSTEM_VERSION AND CMAKE_SYSTEM_PROCESSOR))
+    set(CRYPTOPP_CROSS_COMPILE 1)
+else()
+    set(CRYPTOPP_CROSS_COMPILE 0)
+endif()
+
+# Don't use RPATH's. The resulting binary could fail a security audit.
+if (NOT CMAKE_VERSION VERSION_LESS 2.8.12)
+  set(CMAKE_MACOSX_RPATH 0)
+endif()
+
+if(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
+    add_definitions(-wd68 -wd186 -wd279 -wd327 -wd161 -wd3180)
+endif()
+
+# Endianness
+TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
+if(IS_BIG_ENDIAN)
+    add_definitions(-DIS_BIG_ENDIAN)
+endif()
+
+if(CRYPTOPP_DISABLE_ASM)
+    add_definitions(-DCRYPTOPP_DISABLE_ASM)
+endif()
+if(CRYPTOPP_DISABLE_SSSE3)
+    add_definitions(-DCRYPTOPP_DISABLE_SSSE3)
+endif()
+if(CRYPTOPP_DISABLE_AESNI)
+    add_definitions(-DCRYPTOPP_DISABLE_AESNI)
+endif()
+
+# We need the output 'uname -s' for Unix and Linux system detection
+if (NOT CRYPTOPP_CROSS_COMPILE)
+    set (UNAME_CMD "uname")
+    set (UNAME_ARG "-s")
+    execute_process(COMMAND ${UNAME_CMD} ${UNAME_ARG}
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+        RESULT_VARIABLE UNAME_RESULT
+        OUTPUT_VARIABLE UNAME_SYSTEM)
+        string(REGEX REPLACE "\n$" "" UNAME_SYSTEM "${UNAME_SYSTEM}")
+endif()
+
+# We need the output 'uname -m' for Unix and Linux platform detection
+if (NOT CRYPTOPP_CROSS_COMPILE)
+    set (UNAME_CMD "uname")
+    set (UNAME_ARG "-m")
+    execute_process(COMMAND ${UNAME_CMD} ${UNAME_ARG}
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+        RESULT_VARIABLE UNAME_RESULT
+        OUTPUT_VARIABLE UNAME_MACHINE)
+    string(REGEX REPLACE "\n$" "" UNAME_MACHINE "${UNAME_MACHINE}")
+endif()
+
+if(WINDOWS_STORE OR WINDOWS_PHONE)
+    if("${CMAKE_SYSTEM_VERSION}" MATCHES "10\\.0.*")
+        SET( CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} /D\"_WIN32_WINNT=0x0A00\"" )
+    endif()
+    SET( CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} /FI\"winapifamily.h\"" )
+endif()
+
+# Enable PIC for all targets except Windows and 32-bit x86.
+#   Avoid on 32-bit x86 due to register pressures.
+if ((NOT CRYPTOPP_CROSS_COMPILE) AND (NOT (WINDOWS OR WINDOWS_STORE OR WINDOWS_PHONE)))
+    # Use Regex; match i386, i486, i586 and i686
+    if (NOT (${UNAME_MACHINE} MATCHES "i.86"))
+        SET(CMAKE_POSITION_INDEPENDENT_CODE 1)
+    endif()
+endif()
+
+# -march=native for GCC, Clang and ICC in any version that does support it.
+if ((NOT CRYPTOPP_DISABLE_CXXFLAGS_OPTIMIZATIONS) AND (NOT CRYPTOPP_CROSS_COMPILE) AND (CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU|Intel"))
+    CHECK_CXX_COMPILER_FLAG("-march=native" COMPILER_OPT_ARCH_NATIVE_SUPPORTED)
+    if (COMPILER_OPT_ARCH_NATIVE_SUPPORTED AND NOT CMAKE_CXX_FLAGS MATCHES "-march=")
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+    endif()
+endif()
+
+# Link is driven through the compiler, but CXXFLAGS are not used. Also see
+#   http://public.kitware.com/pipermail/cmake/2003-June/003967.html
+if (NOT (WINDOWS OR WINDOWS_STORE OR WINDOWS_PHONE))
+    SET(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_FLAGS}")
+endif()
+
+#============================================================================
+# Sources & headers
+#============================================================================
+
+# Library headers
+file(GLOB cryptopp_HEADERS cryptopp/*.h)
+
+# Library sources. You can use the GNUmakefile to generate the list: `make sources`.
+file(GLOB cryptopp_SOURCES cryptopp/*.cpp)
+list(REMOVE_ITEM cryptopp_SOURCES
+        # These are removed in the original CMakeLists.txt
+        ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/pch.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/simple.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/winpipes.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/cryptlib_bds.cpp
+        ${cryptopp_SOURCES_TEST}
+        )
+
+if(MINGW OR WIN32)
+    list(APPEND cryptopp_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/winpipes.cpp)
+endif()
+
+if(MSVC AND NOT CRYPTOPP_DISABLE_ASM)
+    if(${CMAKE_GENERATOR} MATCHES ".*ARM")
+        message(STATUS "Disabling ASM because ARM is specified as target platform.")
+    else()
+        # Note that we removed rdrand.asm. This is a workaround for the issue that rdrand.asm cannnot compiled properly
+        # on MSVC. Because there is also a rdrand.S file in the submodule, CMake will specify the target path for
+        # rdrand.asm as "/crytopp.dir/{Debug|Release}/cryptopp/rdrand.asm.obj". The additional target folder "cryptopp"
+        # is specified because the file rdrand.asm is in the source folder "cryptopp". But MSVC assembler can't build
+        # target file to an non-existing folder("cryptopp").
+        list(APPEND cryptopp_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/x64dll.asm)
+        list(APPEND cryptopp_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/x64masm.asm)
+        # list(APPEND cryptopp_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/rdrand.asm)
+        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/x64dll.asm PROPERTIES COMPILE_FLAGS "/D_M_X64")
+        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/x64masm.asm PROPERTIES COMPILE_FLAGS "/D_M_X64")
+        # set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/rdrand.asm PROPERTIES COMPILE_FLAGS "/D_M_X64")
+        enable_language(ASM_MASM)
+    endif()
+endif()
+
+#============================================================================
+# Compile targets
+#============================================================================
+add_library(cryptopp STATIC ${cryptopp_SOURCES})
+
+#============================================================================
+# Third-party libraries
+#============================================================================
+
+if(WIN32)
+    target_link_libraries(cryptopp ws2_32)
+endif()
+
+find_package(Threads)
+target_link_libraries(cryptopp ${CMAKE_THREAD_LIBS_INIT})