improve verilator

Author: waruqi

tests/projects/embed/verilator/hello/src/sim_main.cpp

@@ -1,6 +1,8 @@
 #include "hello.h"
 #include "verilated.h"
 
+double sc_time_stamp() { return 0; }
+
 int main(int argc, char** argv) {
     VerilatedContext* contextp = new VerilatedContext;
     contextp->commandArgs(argc, argv);

tests/projects/embed/verilator/hello/xmake.lua

@@ -1,4 +1,4 @@
-add_requires("verilator 5.016")
+add_requires("verilator")
 
 target("hello")
     add_rules("verilator.binary")

tests/projects/embed/verilator/hello_vcd/xmake.lua

@@ -1,4 +1,4 @@
-add_requires("verilator 5.016")
+add_requires("verilator")
 
 target("hello")
     add_rules("verilator.binary")

tests/projects/embed/verilator/static/src/sim_main.cpp

@@ -1,6 +1,8 @@
 #include "hello.h"
 #include "verilated.h"
 
+double sc_time_stamp() { return 0; }
+
 int main(int argc, char** argv) {
     VerilatedContext* contextp = new VerilatedContext;
     contextp->commandArgs(argc, argv);

tests/projects/embed/verilator/static/xmake.lua

@@ -1,4 +1,4 @@
-add_requires("verilator 5.016")
+add_requires("verilator")
 
 target("hello")
     add_rules("verilator.static")