diff --git a/urjtag/src/bsdl/bsdl.c b/urjtag/src/bsdl/bsdl.c
index 0c761714..883e69e5 100644
--- a/urjtag/src/bsdl/bsdl.c
+++ b/urjtag/src/bsdl/bsdl.c
@@ -128,7 +128,7 @@ urj_bsdl_read_file (urj_chain_t *chain, const char *BSDL_File_Name,
     urj_vhdl_parser_priv_t *vhdl_parser_priv;
     urj_bsdl_jtag_ctrl_t jtag_ctrl;
     int Compile_Errors = 1;
-    int result;
+    int result = 0;
 
     if (globs->debug)
         proc_mode |= URJ_BSDL_MODE_MSG_ALL;
diff --git a/urjtag/src/bus/bf533_ezkit.c b/urjtag/src/bus/bf533_ezkit.c
index ac8e6d99..38e48c48 100644
--- a/urjtag/src/bus/bf533_ezkit.c
+++ b/urjtag/src/bus/bf533_ezkit.c
@@ -318,7 +318,8 @@ bf533_ezkit_bus_write (urj_bus_t *bus, uint32_t adr, uint32_t data)
     urj_part_t *p = bus->part;
     urj_chain_t *chain = bus->chain;
 
-    urj_log (URJ_LOG_LEVEL_COMM, "Writing %04X to %08X...\n", data, adr);
+    urj_log (URJ_LOG_LEVEL_COMM, "Writing %04lX to %08lX...\n",
+             (long unsigned) data, (long unsigned) adr);
 
     select_flash (bus);
     urj_part_set_signal (p, AOE, 1, 1);
diff --git a/urjtag/src/bus/bf533_stamp.c b/urjtag/src/bus/bf533_stamp.c
index 9c163072..fae19b87 100644
--- a/urjtag/src/bus/bf533_stamp.c
+++ b/urjtag/src/bus/bf533_stamp.c
@@ -320,7 +320,8 @@ bf533_stamp_bus_write (urj_bus_t *bus, uint32_t adr, uint32_t data)
     urj_part_t *p = bus->part;
     urj_chain_t *chain = bus->chain;
 
-    urj_log (URJ_LOG_LEVEL_COMM, "Writing %04X to %08X...\n", data, adr);
+    urj_log (URJ_LOG_LEVEL_COMM, "Writing %04lX to %08lX...\n",
+             (long unsigned) data, (long unsigned) adr);
 
     select_flash (bus);
     urj_part_set_signal (p, AOE, 1, 1);
diff --git a/urjtag/src/bus/ejtag_dma.c b/urjtag/src/bus/ejtag_dma.c
index b0a7e6e5..f8ef66de 100644
--- a/urjtag/src/bus/ejtag_dma.c
+++ b/urjtag/src/bus/ejtag_dma.c
@@ -208,16 +208,17 @@ ejtag_dma_write (urj_bus_t *bus, unsigned int addr, unsigned int data, int sz)
     for (i = 0; i < 32; i++)
         ejaddr->in->data[i] = (addr >> i) & 1;
     urj_tap_chain_shift_data_registers (bus->chain, 0); /* Push the address to write */
-    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to ejaddr->in      =%s %08X\n",
-             urj_tap_register_get_string (ejaddr->in), reg_value (ejaddr->in));
+    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to ejaddr->in      =%s %08lX\n",
+             urj_tap_register_get_string (ejaddr->in),
+             (long unsigned) reg_value (ejaddr->in));
     urj_part_set_instruction (bus->part, "EJTAG_DATA");
     urj_tap_chain_shift_instructions (bus->chain);
     for (i = 0; i < 32; i++)
         ejdata->in->data[i] = (data >> i) & 1;
     urj_tap_chain_shift_data_registers (bus->chain, 0); /* Push the data to write */
-    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to edata->in(%c)    =%s %08X\n",
+    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to edata->in(%c)    =%s %08lX\n",
              siz_ (sz), urj_tap_register_get_string (ejdata->in),
-             reg_value (ejdata->in));
+             (long unsigned) reg_value (ejdata->in));
     urj_part_set_instruction (bus->part, "EJTAG_CONTROL");
     urj_tap_chain_shift_instructions (bus->chain);
     urj_tap_register_fill (ejctrl->in, 0);
@@ -228,8 +229,9 @@ ejtag_dma_write (urj_bus_t *bus, unsigned int addr, unsigned int data, int sz)
     if (sz)
         ejctrl->in->data[sz] = 1;       // Size : can be WORD/HALFWORD or nothing for byte
     urj_tap_chain_shift_data_registers (bus->chain, 0); /* Do the operation */
-    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in      =%s %08X\n",
-             urj_tap_register_get_string (ejctrl->in), reg_value (ejctrl->in));
+    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in      =%s %08lX\n",
+             urj_tap_register_get_string (ejctrl->in),
+             (long unsigned) reg_value (ejctrl->in));
 
     do
     {
@@ -286,8 +288,9 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
     for (i = 0; i < 32; i++)
         ejaddr->in->data[i] = (addr >> i) & 1;
     urj_tap_chain_shift_data_registers (bus->chain, 0); /* Push the address to read */
-    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to ejaddr->in      =%s %08X\n",
-             urj_tap_register_get_string (ejaddr->in), reg_value (ejaddr->in));
+    urj_log (URJ_LOG_LEVEL_COMM, "Wrote to ejaddr->in      =%s %08lX\n",
+             urj_tap_register_get_string (ejaddr->in),
+             (long unsigned) reg_value (ejaddr->in));
     urj_part_set_instruction (bus->part, "EJTAG_CONTROL");
     urj_tap_chain_shift_instructions (bus->chain);
     urj_tap_register_fill (ejctrl->in, 0);
@@ -299,8 +302,9 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
         ejctrl->in->data[sz] = 1;       // Size : can be WORD/HALFWORD or nothing for byte
     ejctrl->in->data[DmaRwn] = 1;       // This is a read
     urj_tap_chain_shift_data_registers (bus->chain, 0); /* Do the operation */
-    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in      =%s %08X\n",
-             urj_tap_register_get_string (ejctrl->in), reg_value (ejctrl->in));
+    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in      =%s %08lX\n",
+             urj_tap_register_get_string (ejctrl->in),
+             (long unsigned) reg_value (ejctrl->in));
 
     do
     {
@@ -312,12 +316,12 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
         ejctrl->in->data[DmaAcc] = 1;
         urj_tap_chain_shift_data_registers (bus->chain, 1);
 
-        urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in   =%s %08X\n",
+        urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in   =%s %08lX\n",
                  urj_tap_register_get_string (ejctrl->in),
-                 reg_value (ejctrl->in));
-        urj_log (URJ_LOG_LEVEL_ALL, "Read from ejctrl->out =%s %08X\n",
+                 (long unsigned) reg_value (ejctrl->in));
+        urj_log (URJ_LOG_LEVEL_ALL, "Read from ejctrl->out =%s %08lX\n",
                  urj_tap_register_get_string (ejctrl->out),
-                 reg_value (ejctrl->out));
+                 (long unsigned) reg_value (ejctrl->out));
         timeout--;
         if (!timeout)
             break;
@@ -329,9 +333,9 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
     urj_tap_register_fill (ejdata->in, 0);
     urj_tap_chain_shift_data_registers (bus->chain, 1);
     ret = reg_value (ejdata->out);
-    urj_log (URJ_LOG_LEVEL_COMM, "Read from ejdata->out(%c) =%s %08X\n",
+    urj_log (URJ_LOG_LEVEL_COMM, "Read from ejdata->out(%c) =%s %08lX\n",
              siz_ (sz), urj_tap_register_get_string (ejdata->out),
-             reg_value (ejdata->out));
+             (long unsigned) reg_value (ejdata->out));
     urj_part_set_instruction (bus->part, "EJTAG_CONTROL");
     urj_tap_chain_shift_instructions (bus->chain);
     urj_tap_register_fill (ejctrl->in, 0);
@@ -339,10 +343,12 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
     ejctrl->in->data[ProbEn] = 1;
     urj_tap_chain_shift_data_registers (bus->chain, 1); // Disable DMA, reset state to previous one.
 
-    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in   =%s %08X\n",
-             urj_tap_register_get_string (ejctrl->in),reg_value (ejctrl->in));
-    urj_log (URJ_LOG_LEVEL_ALL, "Read from ejctrl->out =%s %08X\n",
-             urj_tap_register_get_string (ejctrl->out), reg_value(ejctrl->out));
+    urj_log (URJ_LOG_LEVEL_ALL, "Wrote to ejctrl->in   =%s %08lX\n",
+             urj_tap_register_get_string (ejctrl->in),
+             (long unsigned) reg_value (ejctrl->in));
+    urj_log (URJ_LOG_LEVEL_ALL, "Read from ejctrl->out =%s %08lX\n",
+             urj_tap_register_get_string (ejctrl->out),
+             (long unsigned) reg_value(ejctrl->out));
 
     if (ejctrl->out->data[Derr] == 1)
     {                           // Check for DMA error, i.e. incorrect address
@@ -626,7 +632,8 @@ get_sz (uint32_t adr)
 static void
 ejtag_dma_bus_write (urj_bus_t *bus, uint32_t adr, uint32_t data)
 {
-    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%x,data=0x%x\n", __func__, adr, data);
+    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%lx,got=0x%lx\n", __func__,
+             (long unsigned) adr, (long unsigned) data);
     ejtag_dma_write (bus, adr, data, get_sz (adr));
 }
 
@@ -638,7 +645,8 @@ static uint32_t
 ejtag_dma_bus_read (urj_bus_t *bus, uint32_t adr)
 {
     int data = ejtag_dma_read (bus, adr, get_sz (adr));
-    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%x,got=0x%x\n", __func__, adr, data);
+    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%lx,got=0x%lx\n", __func__,
+             (long unsigned) adr, (long unsigned) data);
     return data;
 }
 
@@ -651,8 +659,8 @@ static int
 ejtag_dma_bus_read_start (urj_bus_t *bus, uint32_t adr)
 {
     _data_read = ejtag_dma_read (bus, adr, get_sz (adr));
-    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%x, got=0x%x\n", __func__, adr,
-             _data_read);
+    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%lx, got=0x%lx\n", __func__,
+             (long unsigned) adr, (long unsigned) _data_read);
 
     return URJ_STATUS_OK;
 }
@@ -666,8 +674,8 @@ ejtag_dma_bus_read_next (urj_bus_t *bus, uint32_t adr)
 {
     uint32_t tmp_value = _data_read;
     _data_read = ejtag_dma_read (bus, adr, get_sz (adr));
-    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%x, got=0x%x\n", __func__, adr,
-             _data_read);
+    urj_log (URJ_LOG_LEVEL_ALL, "%s:adr=0x%lx, got=0x%lx\n", __func__,
+             (long unsigned) adr, (long unsigned) _data_read);
     return tmp_value;
 }
 
diff --git a/urjtag/src/bus/fjmem.c b/urjtag/src/bus/fjmem.c
index 4dd846ff..64decac2 100644
--- a/urjtag/src/bus/fjmem.c
+++ b/urjtag/src/bus/fjmem.c
@@ -339,8 +339,10 @@ fjmem_query_blocks (urj_chain_t *chain, urj_part_t *part, urj_bus_t *bus)
             bl->end = bl->start + (1 << (bl->addr_width + bl->ashift)) - 1;
 
             urj_log (URJ_LOG_LEVEL_DEBUG, "block # %d\n", block_num);
-            urj_log (URJ_LOG_LEVEL_DEBUG, " start 0x%08x\n", bl->start);
-            urj_log (URJ_LOG_LEVEL_DEBUG, " end   0x%08x\n", bl->end);
+            urj_log (URJ_LOG_LEVEL_DEBUG, " start 0x%08lx\n",
+                     (long unsigned) bl->start);
+            urj_log (URJ_LOG_LEVEL_DEBUG, " end   0x%08lx\n",
+                     (long unsigned) bl->end);
             urj_log (URJ_LOG_LEVEL_DEBUG, " addr len %d\n", bl->addr_width);
             urj_log (URJ_LOG_LEVEL_DEBUG, " data len %d\n", bl->data_width);
         }
diff --git a/urjtag/src/bus/s3c4510x.c b/urjtag/src/bus/s3c4510x.c
index f69d099f..30be7238 100644
--- a/urjtag/src/bus/s3c4510x.c
+++ b/urjtag/src/bus/s3c4510x.c
@@ -434,7 +434,8 @@ s3c4510_bus_write (urj_bus_t *bus, uint32_t adr, uint32_t data)
     s3c4510_bus_setup_ctrl (bus, 0x01ffff);     /* nOE=1, nRCS0 =1 */
     urj_tap_chain_shift_data_registers (chain, 0);
 
-    urj_log (URJ_LOG_LEVEL_DEBUG, "URJ_BUS_WRITE %08x @ %08x\n", data, adr);
+    urj_log (URJ_LOG_LEVEL_DEBUG, "URJ_BUS_WRITE %08lx @ %08lx\n",
+             (long unsigned) data, (long unsigned) adr);
 }
 
 const urj_bus_driver_t urj_bus_s3c4510_bus = {
diff --git a/urjtag/src/flash/cfi.c b/urjtag/src/flash/cfi.c
index 6befe7da..5ccc0279 100644
--- a/urjtag/src/flash/cfi.c
+++ b/urjtag/src/flash/cfi.c
@@ -249,7 +249,8 @@ urj_flash_cfi_detect (urj_bus_t *bus, uint32_t adr,
         {
             write1 (0, CFI_CMD_READ_ARRAY1);
             urj_error_set (URJ_ERROR_OUT_OF_MEMORY, "malloc(%zd) fails",
-                           tmp * sizeof (urj_flash_cfi_erase_block_region_t));
+                           (size_t) tmp
+                           * sizeof (urj_flash_cfi_erase_block_region_t));
             return URJ_STATUS_FAIL;
         }
 
diff --git a/urjtag/src/tap/cable/cmd_xfer.c b/urjtag/src/tap/cable/cmd_xfer.c
index 419d55c9..ec795e30 100644
--- a/urjtag/src/tap/cable/cmd_xfer.c
+++ b/urjtag/src/tap/cable/cmd_xfer.c
@@ -62,7 +62,7 @@ extend_cmd_buffer (urj_tap_cable_cx_cmd_t *cmd)
     if (cmd->buf == NULL)
     {
         urj_error_set (URJ_ERROR_OUT_OF_MEMORY, "realloc(%s,%zd) fails",
-                       "cmd->buf", cmd->buf_len);
+                       "cmd->buf", (size_t) cmd->buf_len);
     }
 
     return cmd->buf ? 1 : 0;