Merge pull request #4472

02d3ef7b blocks: use auto-generated .c files instead of 'LD -r -b binary' (xiphon)

17 files changed, 113 insertions, 185 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c31c14350..829a7e96c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -180,6 +180,9 @@ set(PER_BLOCK_CHECKPOINT 1)
 
 if(PER_BLOCK_CHECKPOINT)
   add_definitions("-DPER_BLOCK_CHECKPOINT")
+  set(Blocks "blocks")
+else()
+  set(Blocks "")
 endif()
 
 list(INSERT CMAKE_MODULE_PATH 0
@@ -655,12 +658,10 @@ else()
   add_linker_flag_if_supported(-Wl,-z,noexecstack noexecstack_SUPPORTED)
   if (noexecstack_SUPPORTED)
     set(LD_SECURITY_FLAGS "${LD_SECURITY_FLAGS} -Wl,-z,noexecstack")
-    set(LD_RAW_FLAGS ${LD_RAW_FLAGS} -z noexecstack)
   endif()
   add_linker_flag_if_supported(-Wl,-z,noexecheap noexecheap_SUPPORTED)
   if (noexecheap_SUPPORTED)
     set(LD_SECURITY_FLAGS "${LD_SECURITY_FLAGS} -Wl,-z,noexecheap")
-    set(LD_RAW_FLAGS ${LD_RAW_FLAGS} -z noexecheap)
   endif()
 
   # some windows linker bits
diff --git a/src/blockchain_utilities/CMakeLists.txt b/src/blockchain_utilities/CMakeLists.txt
index ecd7b754c..873bf552c 100644
--- a/src/blockchain_utilities/CMakeLists.txt
+++ b/src/blockchain_utilities/CMakeLists.txt
@@ -26,20 +26,6 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set(blocksdat "")
-if(PER_BLOCK_CHECKPOINT)
-  if(APPLE AND DEPENDS)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} --target=x86_64-apple-darwin11 -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
-  elseif(APPLE AND NOT DEPENDS)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
-  elseif(LINUX_32)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
-  else()
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
-  endif()
-  set(blocksdat "blocksdat.o")
-endif()
-
 set(blockchain_import_sources
   blockchain_import.cpp
   bootstrap_file.cpp
@@ -119,8 +105,7 @@ monero_private_headers(blockchain_depth
 
 monero_add_executable(blockchain_import
   ${blockchain_import_sources}
-  ${blockchain_import_private_headers}
-  ${blocksdat})
+  ${blockchain_import_private_headers})
 
 target_link_libraries(blockchain_import
   PRIVATE
@@ -132,7 +117,8 @@ target_link_libraries(blockchain_import
     ${Boost_SYSTEM_LIBRARY}
     ${Boost_THREAD_LIBRARY}
     ${CMAKE_THREAD_LIBS_INIT}
-    ${EXTRA_LIBRARIES})
+    ${EXTRA_LIBRARIES}
+    ${Blocks})
 
 if(ARCH_WIDTH)
   target_compile_definitions(blockchain_import
diff --git a/src/blockchain_utilities/blockchain_import.cpp b/src/blockchain_utilities/blockchain_import.cpp
index 9ec768d26..134969dc4 100644
--- a/src/blockchain_utilities/blockchain_import.cpp
+++ b/src/blockchain_utilities/blockchain_import.cpp
@@ -37,6 +37,7 @@
 #include "misc_log_ex.h"
 #include "bootstrap_file.h"
 #include "bootstrap_serialization.h"
+#include "blocks/blocks.h"
 #include "cryptonote_basic/cryptonote_format_utils.h"
 #include "serialization/binary_utils.h" // dump_binary(), parse_binary()
 #include "serialization/json_utils.h" // dump_json()
@@ -758,7 +759,12 @@ int main(int argc, char* argv[])
   {
 
   core.disable_dns_checkpoints(true);
-  if (!core.init(vm, NULL))
+#if defined(PER_BLOCK_CHECKPOINT)
+  GetCheckpointsCallback get_checkpoints = blocks::GetCheckpointsData;
+#else
+  GetCheckpointsCallback get_checkpoints = nullptr;
+#endif
+  if (!core.init(vm, nullptr, nullptr, get_checkpoints))
   {
     std::cerr << "Failed to initialize core" << ENDL;
     return 1;
diff --git a/src/blocks/CMakeLists.txt b/src/blocks/CMakeLists.txt
index ebb5408cc..bedda3b88 100644
--- a/src/blocks/CMakeLists.txt
+++ b/src/blocks/CMakeLists.txt
@@ -26,20 +26,23 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-if(APPLE)
-    add_library(blocks STATIC blockexports.c)
-    set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
-else()
-    if(LINUX_32)
-        add_custom_command(OUTPUT blocks.o MAIN_DEPENDENCY blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
-        add_custom_command(OUTPUT testnet_blocks.o MAIN_DEPENDENCY testnet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
-        add_custom_command(OUTPUT stagenet_blocks.o MAIN_DEPENDENCY stagenet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/stagenet_blocks.o stagenet_blocks.dat)
-    else()
-        add_custom_command(OUTPUT blocks.o MAIN_DEPENDENCY blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
-        add_custom_command(OUTPUT testnet_blocks.o MAIN_DEPENDENCY testnet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
-        add_custom_command(OUTPUT stagenet_blocks.o MAIN_DEPENDENCY stagenet_blocks.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/stagenet_blocks.o stagenet_blocks.dat)
-    endif()
-    add_library(blocks STATIC blocks.o testnet_blocks.o stagenet_blocks.o blockexports.c)
-    set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
-endif()
+set(GENERATED_SOURCES "")
 
+foreach(BLOB_NAME checkpoints testnet_blocks stagenet_blocks)
+    set(OUTPUT_C_SOURCE "generated_${BLOB_NAME}.c")
+    list(APPEND GENERATED_SOURCES ${OUTPUT_C_SOURCE})
+    set(INPUT_DAT_FILE "${BLOB_NAME}.dat")
+    add_custom_command(
+        OUTPUT ${OUTPUT_C_SOURCE} 
+        MAIN_DEPENDENCY ${INPUT_DAT_FILE} 
+        COMMAND 
+            cd ${CMAKE_CURRENT_BINARY_DIR} && 
+            echo "'#include\t<stddef.h>'" > ${OUTPUT_C_SOURCE} &&
+            echo -n "'const\tunsigned\tchar\t${BLOB_NAME}[]={'" >> ${OUTPUT_C_SOURCE} &&
+            od -v -An -w1 -tu1 ${CMAKE_CURRENT_SOURCE_DIR}/${INPUT_DAT_FILE} | sed -e "':a;N;$$!ba;s/\\n/,/g'" >> ${OUTPUT_C_SOURCE} &&
+            echo "'};'" >> ${OUTPUT_C_SOURCE} &&
+            echo "'const\tsize_t\t${BLOB_NAME}_len\t=\tsizeof(${BLOB_NAME});'" >> ${OUTPUT_C_SOURCE}
+    )
+endforeach()
+
+add_library(blocks STATIC blocks.cpp ${GENERATED_SOURCES})
diff --git a/src/blocks/blockexports.c b/src/blocks/blockexports.c
deleted file mode 100644
index 0154b0413..000000000
--- a/src/blocks/blockexports.c
+++ /dev/null
@@ -1,87 +0,0 @@
-#include <stddef.h>
-
-#if defined(__APPLE__)
-#include <mach-o/getsect.h>
-#ifdef BUILD_SHARED_LIBS
-#if !defined(__LP64__)
-const struct mach_header _mh_execute_header;
-#else
-const struct mach_header_64 _mh_execute_header;
-#endif
-#else
-#if !defined(__LP64__)
-extern const struct mach_header _mh_execute_header;
-#else
-extern const struct mach_header_64 _mh_execute_header;
-#endif
-#endif
-
-const unsigned char *get_blocks_dat_start(int testnet, int stagenet)
-{
-    size_t size;
-    if (testnet)
-        return getsectiondata(&_mh_execute_header, "__DATA", "__testnet_blocks_dat", &size);
-    else if (stagenet)
-        return getsectiondata(&_mh_execute_header, "__DATA", "__stagenet_blocks_dat", &size);
-    else
-        return getsectiondata(&_mh_execute_header, "__DATA", "__blocks_dat", &size);
-}
-
-size_t get_blocks_dat_size(int testnet, int stagenet)
-{
-    size_t size;
-    if (testnet)
-        getsectiondata(&_mh_execute_header, "__DATA", "__testnet_blocks_dat", &size);
-    else if (stagenet)
-        getsectiondata(&_mh_execute_header, "__DATA", "__stagenet_blocks_dat", &size);
-    else
-        getsectiondata(&_mh_execute_header, "__DATA", "__blocks_dat", &size);
-    return size;
-}
-
-#else
-
-#if defined(_WIN32) && !defined(_WIN64)
-#define _binary_blocks_start binary_blocks_dat_start
-#define _binary_blocks_end binary_blocks_dat_end
-#define _binary_testnet_blocks_start binary_testnet_blocks_dat_start
-#define _binary_testnet_blocks_end binary_testnet_blocks_dat_end
-#define _binary_stagenet_blocks_start binary_stagenet_blocks_dat_start
-#define _binary_stagenet_blocks_end binary_stagenet_blocks_dat_end
-#else
-#define _binary_blocks_start _binary_blocks_dat_start
-#define _binary_blocks_end _binary_blocks_dat_end
-#define _binary_testnet_blocks_start _binary_testnet_blocks_dat_start
-#define _binary_testnet_blocks_end _binary_testnet_blocks_dat_end
-#define _binary_stagenet_blocks_start _binary_stagenet_blocks_dat_start
-#define _binary_stagenet_blocks_end _binary_stagenet_blocks_dat_end
-#endif
-
-extern const unsigned char _binary_blocks_start[];
-extern const unsigned char _binary_blocks_end[];
-extern const unsigned char _binary_testnet_blocks_start[];
-extern const unsigned char _binary_testnet_blocks_end[];
-extern const unsigned char _binary_stagenet_blocks_start[];
-extern const unsigned char _binary_stagenet_blocks_end[];
-
-const unsigned char *get_blocks_dat_start(int testnet, int stagenet)
-{
-  if (testnet)
-    return _binary_testnet_blocks_start;
-  else if (stagenet)
-    return _binary_stagenet_blocks_start;
-  else
-    return _binary_blocks_start;
-}
-
-size_t get_blocks_dat_size(int testnet, int stagenet)
-{
-  if (testnet)
-    return (size_t) (_binary_testnet_blocks_end - _binary_testnet_blocks_start);
-  else if (stagenet)
-    return (size_t) (_binary_stagenet_blocks_end - _binary_stagenet_blocks_start);
-  else
-    return (size_t) (_binary_blocks_end - _binary_blocks_start);
-}
-
-#endif
diff --git a/src/blocks/blocks.cpp b/src/blocks/blocks.cpp
new file mode 100644
index 000000000..0661f8448
--- /dev/null
+++ b/src/blocks/blocks.cpp
@@ -0,0 +1,31 @@
+#include "blocks.h"
+
+#include <unordered_map>
+
+extern const unsigned char checkpoints[];
+extern const size_t checkpoints_len;
+extern const unsigned char stagenet_blocks[];
+extern const size_t stagenet_blocks_len;
+extern const unsigned char testnet_blocks[];
+extern const size_t testnet_blocks_len;
+
+namespace blocks
+{
+
+  const std::unordered_map<cryptonote::network_type, const epee::span<const unsigned char>, std::hash<size_t>> CheckpointsByNetwork = {
+    {cryptonote::network_type::MAINNET, {checkpoints, checkpoints_len}},
+    {cryptonote::network_type::STAGENET, {stagenet_blocks, stagenet_blocks_len}},
+    {cryptonote::network_type::TESTNET, {testnet_blocks, testnet_blocks_len}}
+  };
+
+  const epee::span<const unsigned char> GetCheckpointsData(cryptonote::network_type network)
+  {
+    const auto it = CheckpointsByNetwork.find(network);
+    if (it != CheckpointsByNetwork.end())
+    {
+      return it->second;
+    }
+    return nullptr;
+  }
+
+}
diff --git a/src/blocks/blocks.dat b/src/blocks/blocks.dat
deleted file mode 100644
index e69de29bb..000000000
--- a/src/blocks/blocks.dat
+++ /dev/null
diff --git a/src/blocks/blocks.h b/src/blocks/blocks.h
index ec683f47e..14e391319 100644
--- a/src/blocks/blocks.h
+++ b/src/blocks/blocks.h
@@ -1,16 +1,12 @@
 #ifndef SRC_BLOCKS_BLOCKS_H_
 #define SRC_BLOCKS_BLOCKS_H_
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+#include "cryptonote_config.h"
+#include "span.h"
 
-const unsigned char *get_blocks_dat_start(int testnet, int stagenet);
-size_t get_blocks_dat_size(int testnet, int stagenet);
-
-#ifdef __cplusplus
+namespace blocks
+{
+    const epee::span<const unsigned char> GetCheckpointsData(cryptonote::network_type network);
 }
-#endif
-
 
 #endif /* SRC_BLOCKS_BLOCKS_H_ */
diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h
index a6858ce7c..c62eeb738 100644
--- a/src/cryptonote_config.h
+++ b/src/cryptonote_config.h
@@ -30,6 +30,7 @@
 
 #pragma once
 
+#include <stdexcept>
 #include <string>
 #include <boost/uuid/uuid.hpp>
 
diff --git a/src/cryptonote_core/CMakeLists.txt b/src/cryptonote_core/CMakeLists.txt
index 72844db66..231489fdb 100644
--- a/src/cryptonote_core/CMakeLists.txt
+++ b/src/cryptonote_core/CMakeLists.txt
@@ -41,12 +41,6 @@ set(cryptonote_core_private_headers
   tx_pool.h
   cryptonote_tx_utils.h)
 
-if(PER_BLOCK_CHECKPOINT)
-  set(Blocks "blocks")
-else()
-  set(Blocks "")
-endif()
-
 monero_private_headers(cryptonote_core
   ${cryptonote_core_private_headers})
 monero_add_library(cryptonote_core
@@ -69,5 +63,4 @@ target_link_libraries(cryptonote_core
     ${Boost_SYSTEM_LIBRARY}
     ${Boost_THREAD_LIBRARY}
   PRIVATE
-    ${Blocks}
     ${EXTRA_LIBRARIES})
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index eb869b795..6c6e024e4 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -53,9 +53,6 @@
 #include "ringct/rctSigs.h"
 #include "common/perf_timer.h"
 #include "common/notify.h"
-#if defined(PER_BLOCK_CHECKPOINT)
-#include "blocks/blocks.h"
-#endif
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "blockchain"
@@ -341,7 +338,7 @@ uint64_t Blockchain::get_current_blockchain_height() const
 //------------------------------------------------------------------
 //FIXME: possibly move this into the constructor, to avoid accidentally
 //       dereferencing a null BlockchainDB pointer
-bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline, const cryptonote::test_options *test_options, difficulty_type fixed_difficulty)
+bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline, const cryptonote::test_options *test_options, difficulty_type fixed_difficulty, const GetCheckpointsCallback get_checkpoints/* = nullptr*/)
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_tx_pool);
@@ -439,7 +436,7 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
 
 #if defined(PER_BLOCK_CHECKPOINT)
   if (m_nettype != FAKECHAIN)
-    load_compiled_in_block_hashes();
+    load_compiled_in_block_hashes(get_checkpoints);
 #endif
 
   MINFO("Blockchain initialized. last block: " << m_db->height() - 1 << ", " << epee::misc_utils::get_time_interval_string(timestamp_diff) << " time ago, current difficulty: " << get_difficulty_for_next_block());
@@ -4404,19 +4401,21 @@ void Blockchain::cancel()
 
 #if defined(PER_BLOCK_CHECKPOINT)
 static const char expected_block_hashes_hash[] = "954cb2bbfa2fe6f74b2cdd22a1a4c767aea249ad47ad4f7c9445f0f03260f511";
-void Blockchain::load_compiled_in_block_hashes()
+void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback get_checkpoints)
 {
-  const bool testnet = m_nettype == TESTNET;
-  const bool stagenet = m_nettype == STAGENET;
-  if (m_fast_sync && get_blocks_dat_start(testnet, stagenet) != nullptr && get_blocks_dat_size(testnet, stagenet) > 0)
+  if (get_checkpoints == nullptr || !m_fast_sync)
   {
-    MINFO("Loading precomputed blocks (" << get_blocks_dat_size(testnet, stagenet) << " bytes)");
-
+    return;
+  }
+  const epee::span<const unsigned char> checkpoints = get_checkpoints(m_nettype);
+  if (!checkpoints.empty())
+  {
+    MINFO("Loading precomputed blocks (" << checkpoints.size() << " bytes)");
     if (m_nettype == MAINNET)
     {
       // first check hash
       crypto::hash hash;
-      if (!tools::sha256sum(get_blocks_dat_start(testnet, stagenet), get_blocks_dat_size(testnet, stagenet), hash))
+      if (!tools::sha256sum(checkpoints.data(), checkpoints.size(), hash))
       {
         MERROR("Failed to hash precomputed blocks data");
         return;
@@ -4436,9 +4435,9 @@ void Blockchain::load_compiled_in_block_hashes()
       }
     }
 
-    if (get_blocks_dat_size(testnet, stagenet) > 4)
+    if (checkpoints.size() > 4)
     {
-      const unsigned char *p = get_blocks_dat_start(testnet, stagenet);
+      const unsigned char *p = checkpoints.data();
       const uint32_t nblocks = *p | ((*(p+1))<<8) | ((*(p+2))<<16) | ((*(p+3))<<24);
       if (nblocks > (std::numeric_limits<uint32_t>::max() - 4) / sizeof(hash))
       {
@@ -4446,7 +4445,7 @@ void Blockchain::load_compiled_in_block_hashes()
         return;
       }
       const size_t size_needed = 4 + nblocks * sizeof(crypto::hash);
-      if(nblocks > 0 && nblocks > (m_db->height() + HASH_OF_HASHES_STEP - 1) / HASH_OF_HASHES_STEP && get_blocks_dat_size(testnet, stagenet) >= size_needed)
+      if(nblocks > 0 && nblocks > (m_db->height() + HASH_OF_HASHES_STEP - 1) / HASH_OF_HASHES_STEP && checkpoints.size() >= size_needed)
       {
         p += sizeof(uint32_t);
         m_blocks_hash_of_hashes.reserve(nblocks);
diff --git a/src/cryptonote_core/blockchain.h b/src/cryptonote_core/blockchain.h
index ab66fac8b..9b67765b5 100644
--- a/src/cryptonote_core/blockchain.h
+++ b/src/cryptonote_core/blockchain.h
@@ -38,9 +38,11 @@
 #include <boost/multi_index/hashed_index.hpp>
 #include <boost/multi_index/member.hpp>
 #include <atomic>
+#include <functional>
 #include <unordered_map>
 #include <unordered_set>
 
+#include "span.h"
 #include "syncobj.h"
 #include "string_tools.h"
 #include "cryptonote_basic/cryptonote_basic.h"
@@ -73,6 +75,15 @@ namespace cryptonote
     db_nosync //!< Leave syncing up to the backing db (safest, but slowest because of disk I/O)
   };
 
+  /** 
+   * @brief Callback routine that returns checkpoints data for specific network type
+   * 
+   * @param network network type
+   * 
+   * @return checkpoints data, empty span if there ain't any checkpoints for specific network type
+   */
+  typedef std::function<const epee::span<const unsigned char>(cryptonote::network_type network)> GetCheckpointsCallback;
+
   /************************************************************************/
   /*                                                                      */
   /************************************************************************/
@@ -117,10 +128,11 @@ namespace cryptonote
      * @param offline true if running offline, else false
      * @param test_options test parameters
      * @param fixed_difficulty fixed difficulty for testing purposes; 0 means disabled
+     * @param get_checkpoints if set, will be called to get checkpoints data
      *
      * @return true on success, false if any initialization steps fail
      */
-    bool init(BlockchainDB* db, const network_type nettype = MAINNET, bool offline = false, const cryptonote::test_options *test_options = NULL, difficulty_type fixed_difficulty = 0);
+    bool init(BlockchainDB* db, const network_type nettype = MAINNET, bool offline = false, const cryptonote::test_options *test_options = NULL, difficulty_type fixed_difficulty = 0, const GetCheckpointsCallback get_checkpoints = nullptr);
 
     /**
      * @brief Initialize the Blockchain state
@@ -1369,8 +1381,10 @@ namespace cryptonote
      * A (possibly empty) set of block hashes can be compiled into the
      * monero daemon binary.  This function loads those hashes into
      * a useful state.
+     * 
+     * @param get_checkpoints if set, will be called to get checkpoints data
      */
-    void load_compiled_in_block_hashes();
+    void load_compiled_in_block_hashes(const GetCheckpointsCallback get_checkpoints);
 
     /**
      * @brief expands v2 transaction data from blockchain
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 69e3c708b..3882a14ae 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -389,7 +389,7 @@ namespace cryptonote
     return m_blockchain_storage.get_alternative_blocks_count();
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::init(const boost::program_options::variables_map& vm, const char *config_subdir, const cryptonote::test_options *test_options)
+  bool core::init(const boost::program_options::variables_map& vm, const char *config_subdir, const cryptonote::test_options *test_options, const GetCheckpointsCallback get_checkpoints/* = nullptr */)
   {
     start_time = std::time(nullptr);
 
@@ -567,7 +567,7 @@ namespace cryptonote
       regtest_hard_forks
     };
     const difficulty_type fixed_difficulty = command_line::get_arg(vm, arg_fixed_difficulty);
-    r = m_blockchain_storage.init(db.release(), m_nettype, m_offline, regtest ? &regtest_test_options : test_options, fixed_difficulty);
+    r = m_blockchain_storage.init(db.release(), m_nettype, m_offline, regtest ? &regtest_test_options : test_options, fixed_difficulty, get_checkpoints);
 
     r = m_mempool.init(max_txpool_weight);
     CHECK_AND_ASSERT_MES(r, false, "Failed to initialize memory pool");
diff --git a/src/cryptonote_core/cryptonote_core.h b/src/cryptonote_core/cryptonote_core.h
index 58fe5b7b5..882568330 100644
--- a/src/cryptonote_core/cryptonote_core.h
+++ b/src/cryptonote_core/cryptonote_core.h
@@ -244,10 +244,11 @@ namespace cryptonote
       * @param vm command line parameters
       * @param config_subdir subdirectory for config storage
       * @param test_options configuration options for testing
+      * @param get_checkpoints if set, will be called to get checkpoints data, must return checkpoints data pointer and size or nullptr if there ain't any checkpoints for specific network type
       *
       * @return false if one of the init steps fails, otherwise true
       */
-     bool init(const boost::program_options::variables_map& vm, const char *config_subdir = NULL, const test_options *test_options = NULL);
+     bool init(const boost::program_options::variables_map& vm, const char *config_subdir = NULL, const test_options *test_options = NULL, const GetCheckpointsCallback get_checkpoints = nullptr);
 
      /**
       * @copydoc Blockchain::reset_and_set_genesis_block
diff --git a/src/daemon/CMakeLists.txt b/src/daemon/CMakeLists.txt
index f645836a4..117790455 100644
--- a/src/daemon/CMakeLists.txt
+++ b/src/daemon/CMakeLists.txt
@@ -26,20 +26,6 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set(blocksdat "")
-if(PER_BLOCK_CHECKPOINT)
-  if(APPLE AND DEPENDS)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} --target=x86_64-apple-darwin11 -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
-  elseif(APPLE AND NOT DEPENDS)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
-  elseif(LINUX_32)
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} -m elf_i386 ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
-  else()
-    add_custom_command(OUTPUT blocksdat.o MAIN_DEPENDENCY ../blocks/checkpoints.dat COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} ${LD_RAW_FLAGS} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
-  endif()
-  set(blocksdat "blocksdat.o")
-endif()
-
 set(daemon_sources
   command_parser_executor.cpp
   command_server.cpp
@@ -81,9 +67,7 @@ monero_private_headers(daemon
 monero_add_executable(daemon
   ${daemon_sources}
   ${daemon_headers}
-  ${daemon_private_headers}
-  ${blocksdat}
-)
+  ${daemon_private_headers})
 target_link_libraries(daemon
   PRIVATE
     rpc
@@ -106,7 +90,8 @@ target_link_libraries(daemon
     ${CMAKE_THREAD_LIBS_INIT}
     ${ZMQ_LIB}
     ${GNU_READLINE_LIBRARY}
-    ${EXTRA_LIBRARIES})
+    ${EXTRA_LIBRARIES}
+    ${Blocks})
 set_property(TARGET daemon
   PROPERTY
     OUTPUT_NAME "monerod")
diff --git a/src/daemon/core.h b/src/daemon/core.h
index 475f418d6..eda8894a6 100644
--- a/src/daemon/core.h
+++ b/src/daemon/core.h
@@ -28,6 +28,7 @@
 
 #pragma once
 
+#include "blocks/blocks.h"
 #include "cryptonote_core/cryptonote_core.h"
 #include "cryptonote_protocol/cryptonote_protocol_handler.h"
 #include "misc_log_ex.h"
@@ -85,7 +86,12 @@ public:
     //initialize core here
     MGINFO("Initializing core...");
     std::string config_subdir = get_config_subdir();
-    if (!m_core.init(m_vm_HACK, config_subdir.empty() ? NULL : config_subdir.c_str()))
+#if defined(PER_BLOCK_CHECKPOINT)
+    cryptonote::GetCheckpointsCallback get_checkpoints = blocks::GetCheckpointsData;
+#else
+    cryptonote::GetCheckpointsCallback get_checkpoints = nullptr;
+#endif
+    if (!m_core.init(m_vm_HACK, config_subdir.empty() ? NULL : config_subdir.c_str(), nullptr, get_checkpoints))
     {
       return false;
     }
diff --git a/src/device/CMakeLists.txt b/src/device/CMakeLists.txt
index 8f446f42a..727134f75 100644
--- a/src/device/CMakeLists.txt
+++ b/src/device/CMakeLists.txt
@@ -58,12 +58,6 @@ endif()
 set(device_private_headers)
 
 
-if(PER_BLOCK_CHECKPOINT)
-  set(Blocks "blocks")
-else()
-  set(Blocks "")
-endif()
-
 monero_private_headers(device
   ${device_private_headers})
 
@@ -79,5 +73,4 @@ target_link_libraries(device
     ringct_basic
     ${OPENSSL_CRYPTO_LIBRARIES}
   PRIVATE
-    ${Blocks}
     ${EXTRA_LIBRARIES})