init: fix compile warning

Signed-off-by: Nxionglei6 <xionglei6@huawei.com>

services/BUILD.gn

@@ -172,7 +172,7 @@ if (defined(ohos_lite)) {
     if (defined(product_name) && product_name == "rk3568") {
       defines += [ "PRODUCT_RK" ]
     }
-
+    defines += [ "_GNU_SOURCE" ]
     install_images = [
       "system",
       "updater",

services/utils/BUILD.gn

@@ -47,5 +47,6 @@ ohos_static_library("libinit_utils") {
     "//base/startup/init_lite/services/log:init_log",
     "//third_party/bounds_checking_function:libsec_static",
   ]
+  defines = [ "_GNU_SOURCE" ]
   part_name = "init"
 }

test/unittest/common/cmd_func_test.cpp

@@ -61,7 +61,6 @@ const int TEST_MAX_ONE_ARG_LEN = 64;                  // max length of one param
 const int CAT_BUF_SIZE = 512;                         // standard Cat buffer size from vfs_shell_cmd
 
 // job test releated
-const pid_t INVALID_PID = -1;
 const std::string PRE_INIT_DIR = ROOT_DIR + "preInitDir/";
 const std::string INIT_DIR = PRE_INIT_DIR + "initDir";
 const std::string POST_INIT_DIR = INIT_DIR + "postInitDir";

watchdog/BUILD.gn

@@ -25,6 +25,7 @@ if (defined(ohos_lite)) {
     deps = [ "//base/startup/init_lite/services/log:init_log" ]
     if (ohos_kernel_type == "linux") {
       defines = [ "LINUX_WATCHDOG" ]
+      defines += [ "_GNU_SOURCE" ]
     }
   }
 } else {
@@ -37,6 +38,7 @@ if (defined(ohos_lite)) {
     ]
     deps = [ "//base/startup/init_lite/services/log:init_log" ]
     defines = [ "LINUX_WATCHDOG" ]
+    defines += [ "_GNU_SOURCE" ]
     install_enable = true
     part_name = "init"
   }