warnings: Fix clang generated warnings

This patch ensures that it can compile with clang-22

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

Author: kraj

CMakeLists.txt

@@ -262,6 +262,11 @@ add_compile_options(
     -Wno-system-headers
     -Wno-unused-function
     -Wno-stringop-truncation
+    $<$<AND:$<COMPILE_LANGUAGE:C>,$<C_COMPILER_ID:Clang>>:-Wno-gnu-statement-expression-from-macro-expansion>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:Clang>>:-Wno-gnu-statement-expression-from-macro-expansion>
+    $<$<CXX_COMPILER_ID:Clang>:-Wno-gnu-zero-variadic-macro-arguments>
+    $<$<AND:$<COMPILE_LANGUAGE:C>,$<C_COMPILER_ID:GNU>>:-Wno-stringop-truncation>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:GNU>>:-Wno-stringop-truncation>
 )
 
 if(WITH_DOC STREQUAL "OFF")

examples/example1/example1.c

@@ -50,7 +50,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa1)
 
-int main()
+int main(void)
 {
     struct timespec ts;
 

examples/example1_v2/example1.c

@@ -50,7 +50,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa1);
 
-int main()
+int main(void)
 {
     struct timespec ts;
 

examples/example2/example2.c

@@ -52,7 +52,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa2)
 
-int main()
+int main(void)
 {
     int num;
     struct timespec ts;

examples/example2_v2/example2.c

@@ -52,7 +52,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa2);
 
-int main()
+int main(void)
 {
     int num;
     struct timespec ts;

examples/example3/example3.c

@@ -52,7 +52,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa3)
 
-int main()
+int main(void)
 {
     int num;
     struct timespec ts;

examples/example3_v2/example3.c

@@ -52,7 +52,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa3);
 
-int main()
+int main(void)
 {
     int num;
     struct timespec ts;

examples/example4/example4.c

@@ -50,7 +50,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa1)
 
-int main()
+int main(void)
 {
     unsigned char buffer[256];
     int num;

examples/example4_v2/example4.c

@@ -50,7 +50,7 @@
 
 DLT_DECLARE_CONTEXT(con_exa1);
 
-int main()
+int main(void)
 {
     unsigned char buffer[256];
     int num;

src/console/dlt-control-v2.c

@@ -129,7 +129,7 @@ typedef struct {
 /**
  * Print usage information of tool.
  */
-void usage()
+void usage(void)
 {
     char version[255];