# SPDX-Licence-Identifier: EUPL-1.2
#
# Builds libcryptonote.a from vendored upstream C/C++ sources.
# This is the build-system half of the CGo bridge.
#
cmake_minimum_required(VERSION 3.20)
project(cryptonote C CXX)

set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_POSITION_INDEPENDENT_CODE ON)

include(CheckCCompilerFlag)

# Include paths: upstream sources + compat stubs
include_directories(
    ${CMAKE_CURRENT_SOURCE_DIR}/upstream
    ${CMAKE_CURRENT_SOURCE_DIR}/compat
)

# --- Pure C sources (no dependencies beyond themselves) ---
set(C_SOURCES
    upstream/crypto-ops.c
    upstream/crypto-ops-data.c
    upstream/keccak.c
    upstream/hash.c
    upstream/random.c
    upstream/blake2b-ref.c
    upstream/RIPEMD160.c
)

# --- C++ sources (depend on compat layer + Boost headers) ---
# eth_signature.cpp excluded — needs bitcoin-secp256k1, not required for consensus crypto.
# The header (eth_signature.h) is still included for type definitions via crypto-sugar.h.
set(CXX_SOURCES
    upstream/crypto.cpp
    upstream/crypto-sugar.cpp
    upstream/clsag.cpp
    upstream/zarcanum.cpp
    upstream/range_proofs.cpp
    upstream/one_out_of_many_proofs.cpp
    upstream/msm.cpp
    upstream/RIPEMD160_helper.cpp
    bridge.cpp
)

# --- RandomX PoW library ---
set(RANDOMX_SOURCES
    randomx/aes_hash.cpp
    randomx/argon2_ref.c
    randomx/bytecode_machine.cpp
    randomx/cpu.cpp
    randomx/dataset.cpp
    randomx/soft_aes.cpp
    randomx/virtual_memory.c
    randomx/vm_interpreted.cpp
    randomx/allocator.cpp
    randomx/instruction.cpp
    randomx/randomx.cpp
    randomx/superscalar.cpp
    randomx/vm_interpreted_light.cpp
    randomx/argon2_core.c
    randomx/blake2_generator.cpp
    randomx/instructions_portable.cpp
    randomx/reciprocal.c
    randomx/virtual_machine.cpp
    randomx/vm_compiled.cpp
    randomx/vm_compiled_light.cpp
    randomx/blake2/blake2b.c
)

if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|amd64|AMD64)$")
    list(APPEND RANDOMX_SOURCES
        randomx/argon2_ssse3.c
        randomx/argon2_avx2.c
        randomx/assembly_generator_x86.cpp
        randomx/jit_compiler_x86.cpp
        randomx/jit_compiler_x86_static.S
    )
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64)$")
    list(APPEND RANDOMX_SOURCES
        randomx/jit_compiler_a64.cpp
        randomx/jit_compiler_a64_static.S
    )
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(riscv64|rv64)$")
    list(APPEND RANDOMX_SOURCES
        randomx/aes_hash_rv64_vector.cpp
        randomx/aes_hash_rv64_zvkned.cpp
        randomx/cpu_rv64.S
        randomx/jit_compiler_rv64.cpp
        randomx/jit_compiler_rv64_static.S
        randomx/jit_compiler_rv64_vector.cpp
        randomx/jit_compiler_rv64_vector_static.S
    )
else()
    message(FATAL_ERROR "Unsupported RandomX architecture: ${CMAKE_SYSTEM_PROCESSOR}")
endif()

add_library(randomx STATIC ${RANDOMX_SOURCES})
target_include_directories(randomx PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/randomx
)
set_property(TARGET randomx PROPERTY POSITION_INDEPENDENT_CODE ON)
set_property(TARGET randomx PROPERTY CXX_STANDARD 11)
set_property(TARGET randomx PROPERTY CXX_STANDARD_REQUIRED ON)

# Platform-specific flags for RandomX
enable_language(ASM)

if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|amd64|AMD64)$")
    target_compile_options(randomx PRIVATE -maes)

    check_c_compiler_flag(-mssse3 HAVE_SSSE3)
    if(HAVE_SSSE3)
        set_source_files_properties(randomx/argon2_ssse3.c PROPERTIES COMPILE_FLAGS -mssse3)
    endif()
    check_c_compiler_flag(-mavx2 HAVE_AVX2)
    if(HAVE_AVX2)
        set_source_files_properties(randomx/argon2_avx2.c PROPERTIES COMPILE_FLAGS -mavx2)
    endif()
endif()

target_compile_options(randomx PRIVATE
    -Wno-unused-variable
    -Wno-unused-function
    -Wno-sign-compare
    -Wno-unused-parameter
    -Wno-implicit-fallthrough
)

# --- Find system dependencies ---
find_package(OpenSSL REQUIRED)

# --- Static library ---
add_library(cryptonote STATIC ${C_SOURCES} ${CXX_SOURCES})

target_include_directories(cryptonote PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/upstream
    ${CMAKE_CURRENT_SOURCE_DIR}/compat
    ${CMAKE_CURRENT_SOURCE_DIR}/randomx
    ${OPENSSL_INCLUDE_DIR}
)

target_link_libraries(cryptonote PRIVATE
    OpenSSL::Crypto
    randomx
)

# Suppress warnings from upstream code (we don't modify it)
target_compile_options(cryptonote PRIVATE
    -Wno-unused-variable
    -Wno-unused-function
    -Wno-sign-compare
    -Wno-unused-parameter
    -Wno-deprecated-declarations
)