<fix>(project): fix strict prototype compile bug.

.github/workflows/workflow.yml

@@ -149,6 +149,7 @@ jobs:
       - name: install CentOS dependencies
         run: |
           yum install -y epel-release centos-release-scl
+          yum install https://packages.endpointdev.com/rhel/7/os/x86_64/endpoint-repo.x86_64.rpm
           yum install -y java-11-openjdk-devel wget git make gcc gcc-c++ glibc-static glibc-devel openssl openssl-devel ccache devtoolset-11 llvm-toolset-7.0 rh-perl530-perl libzstd-devel zlib-devel flex bison python-devel python3-devel
       - name: reinstall cmake
         run: |

bcos-c-sdk/bcos_sdk_c.h

@@ -37,7 +37,7 @@ extern "C" {
  *
  * @return const char*
  */
-const char* bcos_sdk_version();
+const char* bcos_sdk_version(void);
 
 /**
  * @brief: create bcos sdk object by config object

bcos-c-sdk/bcos_sdk_c_common.h

@@ -101,7 +101,7 @@ struct bcos_sdk_c_config
  * @brief create bcos_sdk_c_config in default value
  * @return struct bcos_sdk_c_config*
  */
-struct bcos_sdk_c_config* bcos_sdk_c_config_create_empty();
+struct bcos_sdk_c_config* bcos_sdk_c_config_create_empty(void);
 
 /**
  * @brief duplicate string

bcos-c-sdk/bcos_sdk_c_error.h

@@ -53,15 +53,15 @@ extern "C" {
  *
  * @return int
  */
-extern int bcos_sdk_is_last_opr_success();
+extern int bcos_sdk_is_last_opr_success(void);
 
 /**
  * @brief gets status of the recent sync operation
  *  Note: thread safe operation
  *
  * @return int
  */
-extern int bcos_sdk_get_last_error();
+extern int bcos_sdk_get_last_error(void);
 
 /**
  * @brief gets error message of the recent sync operation, effect if bcos_sdk_get_last_error,
@@ -70,12 +70,12 @@ extern int bcos_sdk_get_last_error();
  *
  * @return const char*
  */
-extern const char* bcos_sdk_get_last_error_msg();
+extern const char* bcos_sdk_get_last_error_msg(void);
 
 /**
  * @brief clear the last error
  */
-extern void bcos_sdk_clear_last_error();
+extern void bcos_sdk_clear_last_error(void);
 
 /**
  * @brief set the last error and error message

sample/amop/broadcast.c

@@ -31,7 +31,7 @@
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-void usage()
+void usage(void)
 {
     printf("Desc: broadcast amop message by command params\n");
     printf("Usage: broadcast <config> <topic> <message>\n");

sample/amop/publish.c

@@ -31,7 +31,7 @@
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-void usage()
+void usage(void)
 {
     printf("Desc: publish amop message by command params\n");
     printf("Usage: publish <config> <topic> <message>\n");

sample/amop/subscribe.c

@@ -29,7 +29,7 @@
 #include <unistd.h>
 
 //------------------------------------------------------------------------------
-void usage()
+void usage(void)
 {
     printf("Desc: subscribe amop topic by command params\n");
     printf("Usage: subscribe <config> <topic>\n");

sample/eventsub/eventsub.c

@@ -31,7 +31,7 @@
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-void usage()
+void usage(void)
 {
     printf("Desc: subscribe contract events by command params\n");
     printf("Usage: eventsub <config> <group_id> <from> <to> <address>[Optional]\n");

sample/rpc/rpc.c

@@ -30,7 +30,7 @@
 
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
-void usage()
+void usage(void)
 {
     printf("Desc: rpc methods call test\n");
     printf("Usage: rpc <host> <port> <ssl type> <group_id>\n");

sample/tx/hello_sample.c

@@ -127,7 +127,7 @@ const char* g_hw_abi =
 }
 */
 
-void usage()
+void usage(void)
 {
     printf("Desc: HelloWorld contract sample\n");
     printf("Usage: hello_sample <config> <group_id>\n");

sample/tx/hello_sample_hsm.c

@@ -128,7 +128,7 @@ const char* g_hw_abi =
 }
 */
 
-void usage()
+void usage(void)
 {
     printf("Desc: HelloWorld contract sample with hsm key pair\n");
     printf(

sample/tx/tx_struct_test.c

@@ -129,7 +129,7 @@ const char* g_hw_abi =
 }
 */
 
-void usage()
+void usage(void)
 {
     printf("Desc: tx struct test sample\n");
     printf("Usage: tx_struct_test <config> <group_id>\n");