SystemC 2.3.0 or newer (SYSTEMC_VERSION >= 20111121) is now required.

Changes

@@ -7,6 +7,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
 
 **    C++11 or newer compilers are now required.
 
+**    SystemC 2.3.0 or newer (SYSTEMC_VERSION >= 20111121) is now required.
+
 **    Support hierarchical Verilation (#2206). [Yutetsu TAKATSUKASA]
 
 ****  Support (with limitations) class extern, class extends, virtual class.

bin/verilator

@@ -3690,10 +3690,11 @@ for more information.
 
 =item /*verilator sc_clock*/
 
-Deprecated.  Used after an input declaration to indicate the signal
+Deprecated and ignored.  Previously used after an input declaration to
-should be declared in SystemC as a sc_clock instead of a bool.  This was
+indicate the signal should be declared in SystemC as a sc_clock instead of
-needed in SystemC 1.1 and 1.2 only; versions 2.0 and later do not require
+a bool.  This was needed in SystemC 1.1 and 1.2 only; versions 2.0 and
-clock pins to be sc_clocks and this is no longer needed.
+later do not require clock pins to be sc_clocks and this is no longer
+needed and is ignored.
 
 =item /*verilator sc_bv*/
 
@@ -5056,13 +5057,6 @@ Verilator currently requires C++11 or newer compilers.  Verilator will
 require C++14 or newer compilers for both compiling Verilator and compiling
 Verilated models no sooner than January 2022.
 
-=item SystemC 2.2 and earlier support
-
-Support for SystemC versions 2.2 and earlier including the related sc_clock
-variable attribute will be removed no sooner than September 2020.  The
-supported versions will be SystemC 2.3.0 (SYSTEMC_VERSION 20111121) and
-later (presently 2.3.0, 2.3.1, 2.3.2, 2.3.3).
-
 =item Configuration File -msg
 
 The -msg argument to lint_off has been replaced with -rule.  -msg is

examples/make_hello_sc/sc_main.cpp

@@ -29,19 +29,11 @@ int sc_main(int argc, char* argv[]) {
     Vtop* top = new Vtop("top");
 
     // Initialize SC model
-#if (SYSTEMC_VERSION >= 20070314)
     sc_start(1, SC_NS);
-#else
-    sc_start(1);
-#endif
 
     // Simulate until $finish
     while (!Verilated::gotFinish()) {
-#if (SYSTEMC_VERSION >= 20070314)
         sc_start(1, SC_NS);
-#else
-        sc_start(1);
-#endif
     }
 
     // Final model cleanup

examples/make_tracing_sc/sc_main.cpp

@@ -44,21 +44,9 @@ int sc_main(int argc, char* argv[]) {
     // General logfile
     ios::sync_with_stdio();
 
-    // Defaults time
-#if (SYSTEMC_VERSION > 20011000)
-#else
-    sc_time dut(1.0, sc_ns);
-    sc_set_default_time_unit(dut);
-#endif
-
     // Define clocks
-#if (SYSTEMC_VERSION >= 20070314)
     sc_clock clk("clk", 10, SC_NS, 0.5, 3, SC_NS, true);
     sc_clock fastclk("fastclk", 2, SC_NS, 0.5, 2, SC_NS, true);
-#else
-    sc_clock clk("clk", 10, 0.5, 3, true);
-    sc_clock fastclk("fastclk", 2, 0.5, 2, true);
-#endif
 
     // Define interconnect
     sc_signal<bool> reset_l;
@@ -89,11 +77,7 @@ int sc_main(int argc, char* argv[]) {
 
     // You must do one evaluation before enabling waves, in order to allow
     // SystemC to interconnect everything for testing.
-#if (SYSTEMC_VERSION >= 20070314)
     sc_start(1, SC_NS);
-#else
-    sc_start(1);
-#endif
 
 #if VM_TRACE
     // If verilator was invoked with --trace argument,
@@ -125,11 +109,7 @@ int sc_main(int argc, char* argv[]) {
         }
 
         // Simulate 1ns
-#if (SYSTEMC_VERSION >= 20070314)
         sc_start(1, SC_NS);
-#else
-        sc_start(1);
-#endif
     }
 
     // Final model cleanup

include/verilated.h

@@ -61,7 +61,7 @@
 
 // Version check
 #if defined(SYSTEMC_VERSION) && (SYSTEMC_VERSION < 20111121)
-# warning "Verilator soon requires SystemC 2.3.*; see manual for deprecated other versions."
+# warning "Verilator requires SystemC 2.3.* or newer."
 #endif
 // clang-format on
 
@@ -846,13 +846,8 @@ extern int VL_TIME_STR_CONVERT(const char* strp) VL_PURE;
 
 /// Return current simulation time
 #if defined(SYSTEMC_VERSION)
-# if SYSTEMC_VERSION > 20011000
 // Already defined: extern sc_time sc_time_stamp();
 inline vluint64_t vl_time_stamp64() { return sc_time_stamp().value(); }
-# else  // Before SystemC changed to integral time representation
-// Already defined: extern double sc_time_stamp();
-inline vluint64_t vl_time_stamp64() { return static_cast<vluint64_t>(sc_time_stamp()); }
-# endif
 #else  // Non-SystemC
 # ifdef VL_TIME_STAMP64
 extern vluint64_t vl_time_stamp64();

include/verilated_vcd_sc.cpp

@@ -25,22 +25,21 @@
 //======================================================================
 
 //--------------------------------------------------
-#if (SYSTEMC_VERSION >= 20050714)
 // SystemC 2.1.v1
 // cppcheck-suppress unusedFunction
 void VerilatedVcdSc::write_comment(const std::string&) {}
 void VerilatedVcdSc::trace(const unsigned int&, const std::string&, const char**) {}
 
-// clang-format off
+#define DECL_TRACE_METHOD_A(tp) \
-# define DECL_TRACE_METHOD_A(tp) \
     void VerilatedVcdSc::trace(const tp& object, const std::string& name) {}
-# define DECL_TRACE_METHOD_B(tp) \
+#define DECL_TRACE_METHOD_B(tp) \
     void VerilatedVcdSc::trace(const tp& object, const std::string& name, int width) {}
 
-# if (SYSTEMC_VERSION >= 20171012)
+// clang-format off
+#if (SYSTEMC_VERSION >= 20171012)
     DECL_TRACE_METHOD_A( sc_event )
     DECL_TRACE_METHOD_A( sc_time )
-# endif
+#endif
 
     DECL_TRACE_METHOD_A( bool )
     DECL_TRACE_METHOD_A( sc_dt::sc_bit )
@@ -50,9 +49,9 @@ void VerilatedVcdSc::trace(const unsigned int&, const std::string&, const char**
     DECL_TRACE_METHOD_B( unsigned short )
     DECL_TRACE_METHOD_B( unsigned int )
     DECL_TRACE_METHOD_B( unsigned long )
-# ifdef SYSTEMC_64BIT_PATCHES
+#ifdef SYSTEMC_64BIT_PATCHES
     DECL_TRACE_METHOD_B( unsigned long long)
-# endif
+#endif
     DECL_TRACE_METHOD_B( char )
     DECL_TRACE_METHOD_B( short )
     DECL_TRACE_METHOD_B( int )
@@ -76,92 +75,6 @@ void VerilatedVcdSc::trace(const unsigned int&, const std::string&, const char**
     DECL_TRACE_METHOD_A( sc_dt::sc_lv_base )
 // clang-format on
 
-//--------------------------------------------------
-#elif (SYSTEMC_VERSION > 20011000)
-// SystemC 2.0.1
-// cppcheck-suppress unusedFunction
-void VerilatedVcdSc::write_comment(const sc_string&) {}
-void VerilatedVcdSc::trace(const unsigned int&, const sc_string&, const char**) {}
-
-#define DECL_TRACE_METHOD_A(tp) \
-    void VerilatedVcdSc::trace(const tp& object, const sc_string& name) {}
-#define DECL_TRACE_METHOD_B(tp) \
-    void VerilatedVcdSc::trace(const tp& object, const sc_string& name, int width) {}
-
-// clang-format off
-    DECL_TRACE_METHOD_A( bool )
-    DECL_TRACE_METHOD_A( sc_bit )
-    DECL_TRACE_METHOD_A( sc_logic )
-    DECL_TRACE_METHOD_B( unsigned char )
-    DECL_TRACE_METHOD_B( unsigned short )
-    DECL_TRACE_METHOD_B( unsigned int )
-    DECL_TRACE_METHOD_B( unsigned long )
-#ifdef SYSTEMC_64BIT_PATCHES
-    DECL_TRACE_METHOD_B( unsigned long long)
-#endif
-#if (SYSTEMC_VERSION > 20041000)
-    DECL_TRACE_METHOD_B( unsigned long long)
-    DECL_TRACE_METHOD_B( long long)
-#endif
-    DECL_TRACE_METHOD_B( char )
-    DECL_TRACE_METHOD_B( short )
-    DECL_TRACE_METHOD_B( int )
-    DECL_TRACE_METHOD_B( long )
-    DECL_TRACE_METHOD_A( float )
-    DECL_TRACE_METHOD_A( double )
-    DECL_TRACE_METHOD_A( sc_int_base )
-    DECL_TRACE_METHOD_A( sc_uint_base )
-    DECL_TRACE_METHOD_A( sc_signed )
-    DECL_TRACE_METHOD_A( sc_unsigned )
-    DECL_TRACE_METHOD_A( sc_fxval )
-    DECL_TRACE_METHOD_A( sc_fxval_fast )
-    DECL_TRACE_METHOD_A( sc_fxnum )
-    DECL_TRACE_METHOD_A( sc_fxnum_fast )
-    DECL_TRACE_METHOD_A( sc_bv_base )
-    DECL_TRACE_METHOD_A( sc_lv_base )
-// clang-format on
-
-//--------------------------------------------------
-#else
-// SystemC 1.2.1beta
-// cppcheck-suppress unusedFunction
-void VerilatedVcdSc::write_comment(const sc_string&) {}
-void VerilatedVcdSc::trace(const unsigned int&, const sc_string&, const char**) {}
-
-#define DECL_TRACE_METHOD_A(tp) \
-    void VerilatedVcdSc::trace(const tp& object, const sc_string& name) {}
-#define DECL_TRACE_METHOD_B(tp) \
-    void VerilatedVcdSc::trace(const tp& object, const sc_string& name, int width) {}
-
-// clang-format off
-    DECL_TRACE_METHOD_A( bool )
-    DECL_TRACE_METHOD_B( unsigned char )
-    DECL_TRACE_METHOD_B( short unsigned int )
-    DECL_TRACE_METHOD_B( unsigned int )
-    DECL_TRACE_METHOD_B( long unsigned int )
-    DECL_TRACE_METHOD_B( char )
-    DECL_TRACE_METHOD_B( short int )
-    DECL_TRACE_METHOD_B( int )
-    DECL_TRACE_METHOD_B( long int )
-    DECL_TRACE_METHOD_A( float )
-    DECL_TRACE_METHOD_A( double )
-    DECL_TRACE_METHOD_A( sc_bit )
-    DECL_TRACE_METHOD_A( sc_logic )
-    DECL_TRACE_METHOD_A( sc_bool_vector )
-    DECL_TRACE_METHOD_A( sc_logic_vector )
-    DECL_TRACE_METHOD_A( sc_signal_bool_vector )
-    DECL_TRACE_METHOD_A( sc_signal_logic_vector )
-    DECL_TRACE_METHOD_A( sc_uint_base )
-    DECL_TRACE_METHOD_A( sc_int_base )
-    DECL_TRACE_METHOD_A( sc_unsigned )
-    DECL_TRACE_METHOD_A( sc_signed )
-    DECL_TRACE_METHOD_A( sc_signal_resolved )
-    DECL_TRACE_METHOD_A( sc_signal_resolved_vector )
-    DECL_TRACE_METHOD_A( sc_bv_ns::sc_bv_base )
-    DECL_TRACE_METHOD_A( sc_bv_ns::sc_lv_base )
-// clang-format on
-#endif
-
 #undef DECL_TRACE_METHOD_A
 #undef DECL_TRACE_METHOD_B
 

include/verilated_vcd_sc.h

@@ -38,7 +38,6 @@ class VerilatedVcdSc : sc_trace_file, public VerilatedVcdC {
 public:
     VerilatedVcdSc() {
         sc_get_curr_simcontext()->add_trace_file(this);
-#if (SYSTEMC_VERSION >= 20060505)
         // We want to avoid a depreciated warning, but still be back compatible.
         // Turning off the message just for this still results in an
         // annoying "to turn off" message.
@@ -48,25 +47,13 @@ public:
             spTrace()->set_time_unit(tunits.to_string());
         }
         spTrace()->set_time_resolution(sc_get_time_resolution().to_string());
-#elif (SYSTEMC_VERSION > 20011000)
-        // To confuse matters 2.1.beta returns a char* here, while 2.1.v1 returns a std::string
-        // we allow both flavors with overloaded set_time_* functions.
-        spTrace()->set_time_unit(sc_get_default_time_unit().to_string());
-        spTrace()->set_time_resolution(sc_get_time_resolution().to_string());
-#endif
     }
     virtual ~VerilatedVcdSc() { close(); }
 
     // METHODS
     /// Called by SystemC simulate()
     virtual void cycle(bool delta_cycle) {
-#if (SYSTEMC_VERSION > 20011000)
         if (!delta_cycle) { this->dump(sc_time_stamp().to_double()); }
-#else
-        // VCD files must have integer timestamps, so we write all times in
-        // increments of time_resolution
-        if (!delta_cycle) { this->dump(sc_time_stamp().to_double()); }
-#endif
     }
 
 private:
@@ -76,14 +63,10 @@ private:
     // Cadence Incisive has these as abstract functions so we must create them
     virtual void set_time_unit(int exponent10_seconds) {}  // deprecated
 #endif
-#if defined(NC_SYSTEMC) || (SYSTEMC_VERSION >= 20111100)
     virtual void set_time_unit(double v, sc_time_unit tu) {}  // LCOV_EXCL_LINE
-#endif
 
 //--------------------------------------------------
-#if (SYSTEMC_VERSION >= 20050714)
     // SystemC 2.1.v1
-    // clang-format off
 # define DECL_TRACE_METHOD_A(tp) virtual void trace(const tp& object, const std::string& name);
 # define DECL_TRACE_METHOD_B(tp) \
     virtual void trace(const tp& object, const std::string& name, int width);
@@ -91,11 +74,12 @@ private:
     virtual void write_comment(const std::string&);
     virtual void trace(const unsigned int&, const std::string&, const char**);
 
+    // clang-format off
     // Formatting matches that of sc_trace.h
-# if (SYSTEMC_VERSION >= 20171012)
+#if (SYSTEMC_VERSION >= 20171012)
     DECL_TRACE_METHOD_A( sc_event )
     DECL_TRACE_METHOD_A( sc_time )
-# endif
+#endif
 
     DECL_TRACE_METHOD_A( bool )
     DECL_TRACE_METHOD_A( sc_dt::sc_bit )
@@ -105,9 +89,9 @@ private:
     DECL_TRACE_METHOD_B( unsigned short )
     DECL_TRACE_METHOD_B( unsigned int )
     DECL_TRACE_METHOD_B( unsigned long )
-# ifdef SYSTEMC_64BIT_PATCHES
+#ifdef SYSTEMC_64BIT_PATCHES
     DECL_TRACE_METHOD_B( unsigned long long)
-# endif
+#endif
     DECL_TRACE_METHOD_B( char )
     DECL_TRACE_METHOD_B( short )
     DECL_TRACE_METHOD_B( int )
@@ -131,90 +115,6 @@ private:
     DECL_TRACE_METHOD_A( sc_dt::sc_lv_base )
     // clang-format on
 
-//--------------------------------------------------
-#elif (SYSTEMC_VERSION > 20011000)
-    // SystemC 2.0.1
-    // clang-format off
-# define DECL_TRACE_METHOD_A(tp) virtual void trace(const tp& object, const sc_string& name);
-# define DECL_TRACE_METHOD_B(tp) \
-    virtual void trace(const tp& object, const sc_string& name, int width);
-
-    virtual void write_comment(const sc_string&);
-    virtual void trace(const unsigned int&, const sc_string&, const char**);
-    virtual void delta_cycles(bool) {}
-    virtual void space(int n) {}
-
-    DECL_TRACE_METHOD_A( bool )
-    DECL_TRACE_METHOD_A( sc_bit )
-    DECL_TRACE_METHOD_A( sc_logic )
-    DECL_TRACE_METHOD_B( unsigned char )
-    DECL_TRACE_METHOD_B( unsigned short )
-    DECL_TRACE_METHOD_B( unsigned int )
-    DECL_TRACE_METHOD_B( unsigned long )
-# ifdef SYSTEMC_64BIT_PATCHES
-    DECL_TRACE_METHOD_B( unsigned long long)
-# endif
-# if (SYSTEMC_VERSION > 20041000)
-    DECL_TRACE_METHOD_B( unsigned long long)
-    DECL_TRACE_METHOD_B( long long)
-# endif
-    DECL_TRACE_METHOD_B( char )
-    DECL_TRACE_METHOD_B( short )
-    DECL_TRACE_METHOD_B( int )
-    DECL_TRACE_METHOD_B( long )
-    DECL_TRACE_METHOD_A( float )
-    DECL_TRACE_METHOD_A( double )
-    DECL_TRACE_METHOD_A( sc_int_base )
-    DECL_TRACE_METHOD_A( sc_uint_base )
-    DECL_TRACE_METHOD_A( sc_signed )
-    DECL_TRACE_METHOD_A( sc_unsigned )
-    DECL_TRACE_METHOD_A( sc_fxval )
-    DECL_TRACE_METHOD_A( sc_fxval_fast )
-    DECL_TRACE_METHOD_A( sc_fxnum )
-    DECL_TRACE_METHOD_A( sc_fxnum_fast )
-    DECL_TRACE_METHOD_A( sc_bv_base )
-    DECL_TRACE_METHOD_A( sc_lv_base )
-    // clang-format on
-
-//--------------------------------------------------
-#else
-    // SystemC 1.2.1beta
-    // clang-format off
-# define DECL_TRACE_METHOD_A(tp) virtual void trace(const tp& object, const sc_string& name);
-# define DECL_TRACE_METHOD_B(tp) \
-    virtual void trace(const tp& object, const sc_string& name, int width);
-
-    virtual void write_comment(const sc_string&);
-    virtual void trace(const unsigned int&, const sc_string&, const char**);
-
-    DECL_TRACE_METHOD_A( bool )
-    DECL_TRACE_METHOD_B( unsigned char )
-    DECL_TRACE_METHOD_B( short unsigned int )
-    DECL_TRACE_METHOD_B( unsigned int )
-    DECL_TRACE_METHOD_B( long unsigned int )
-    DECL_TRACE_METHOD_B( char )
-    DECL_TRACE_METHOD_B( short int )
-    DECL_TRACE_METHOD_B( int )
-    DECL_TRACE_METHOD_B( long int )
-    DECL_TRACE_METHOD_A( float )
-    DECL_TRACE_METHOD_A( double )
-    DECL_TRACE_METHOD_A( sc_bit )
-    DECL_TRACE_METHOD_A( sc_logic )
-    DECL_TRACE_METHOD_A( sc_bool_vector )
-    DECL_TRACE_METHOD_A( sc_logic_vector )
-    DECL_TRACE_METHOD_A( sc_signal_bool_vector )
-    DECL_TRACE_METHOD_A( sc_signal_logic_vector )
-    DECL_TRACE_METHOD_A( sc_uint_base )
-    DECL_TRACE_METHOD_A( sc_int_base )
-    DECL_TRACE_METHOD_A( sc_unsigned )
-    DECL_TRACE_METHOD_A( sc_signed )
-    DECL_TRACE_METHOD_A( sc_signal_resolved )
-    DECL_TRACE_METHOD_A( sc_signal_resolved_vector )
-    DECL_TRACE_METHOD_A( sc_bv_ns::sc_bv_base )
-    DECL_TRACE_METHOD_A( sc_bv_ns::sc_lv_base )
-# endif
-    // clang-format on
-
 #undef DECL_TRACE_METHOD_A
 #undef DECL_TRACE_METHOD_B
 };

src/V3Ast.h

@@ -343,7 +343,6 @@ public:
         TYPENAME,                       // V3Width processes
         //
         VAR_BASE,                       // V3LinkResolve creates for AstPreSel, V3LinkParam removes
-        VAR_CLOCK,                      // V3LinkParse moves to AstVar::attrScClocked
         VAR_CLOCK_ENABLE,               // V3LinkParse moves to AstVar::attrClockEn
         VAR_PUBLIC,                     // V3LinkParse moves to AstVar::sigPublic
         VAR_PUBLIC_FLAT,                // V3LinkParse moves to AstVar::sigPublic
@@ -369,7 +368,7 @@ public:
             "ENUM_NEXT", "ENUM_PREV", "ENUM_NAME",
             "MEMBER_BASE",
             "TYPENAME",
-            "VAR_BASE", "VAR_CLOCK", "VAR_CLOCK_ENABLE", "VAR_PUBLIC",
+            "VAR_BASE", "VAR_CLOCK_ENABLE", "VAR_PUBLIC",
             "VAR_PUBLIC_FLAT", "VAR_PUBLIC_FLAT_RD", "VAR_PUBLIC_FLAT_RW",
             "VAR_ISOLATE_ASSIGNMENTS", "VAR_SC_BV", "VAR_SFORMAT", "VAR_CLOCKER",
             "VAR_NO_CLOCKER", "VAR_SPLIT_VAR"

src/V3EmitC.cpp

@@ -1858,7 +1858,6 @@ void EmitCStmts::emitVarCtors(bool* firstp) {
     if (!m_ctorVarsVec.empty()) {
         ofp()->indentInc();
         puts("\n");
-        puts("#if (SYSTEMC_VERSION>20011000)\n");  // SystemC 2.0.1 and newer
         for (const AstVar* varp : m_ctorVarsVec) {
             bool isArray = !VN_CAST(varp->dtypeSkipRefp(), BasicDType);
             if (isArray) {
@@ -1873,7 +1872,7 @@ void EmitCStmts::emitVarCtors(bool* firstp) {
                 puts(")");
             }
         }
-        puts("\n#endif\n");
+        puts("\n");
         ofp()->indentDec();
     }
 }

src/V3EmitXml.cpp

@@ -160,7 +160,6 @@ class EmitXmlFileVisitor : public AstNVisitor {
             puts(" localparam=\"true\"");
         }
         if (nodep->attrScBv()) puts(" sc_bv=\"true\"");
-        if (nodep->attrScClocked()) puts(" sc_clock=\"true\"");
         if (nodep->attrSFormat()) puts(" sformat=\"true\"");
         outputChildrenEnd(nodep, "");
     }

src/V3LinkParse.cpp

@@ -266,11 +266,6 @@ private:
             UASSERT_OBJ(typep, nodep, "Attribute not attached to typedef");
             typep->attrPublic(true);
             VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
-        } else if (nodep->attrType() == AstAttrType::VAR_CLOCK) {
-            UASSERT_OBJ(m_varp, nodep, "Attribute not attached to variable");
-            nodep->v3warn(DEPRECATED, "sc_clock is deprecated and will be removed");
-            m_varp->attrScClocked(true);
-            VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
         } else if (nodep->attrType() == AstAttrType::VAR_CLOCK_ENABLE) {
             UASSERT_OBJ(m_varp, nodep, "Attribute not attached to variable");
             m_varp->attrClockEn(true);

src/V3PreShell.cpp

@@ -61,8 +61,6 @@ protected:
             s_preprocp->defineCmdLine(prefl, "VERILATOR", "1");  // LEAK_OK
             s_preprocp->defineCmdLine(prefl, "verilator", "1");  // LEAK_OK
             s_preprocp->defineCmdLine(prefl, "verilator3", "1");  // LEAK_OK
-            s_preprocp->defineCmdLine(prefl, "systemc_clock",
-                                      "/*verilator systemc_clock*/");  // LEAK_OK
             s_preprocp->defineCmdLine(prefl, "coverage_block_off",
                                       "/*verilator coverage_block_off*/");  // LEAK_OK
             if (prefl->language().systemVerilog()) {

src/verilog.l

@@ -716,10 +716,9 @@ vnum    {vnum1}|{vnum2}|{vnum3}|{vnum4}|{vnum5}
   "/*verilator public_flat_rw*/"        { FL; return yVL_PUBLIC_FLAT_RW; }  // The @(edge) is converted by the preproc
   "/*verilator public_module*/"         { FL; return yVL_PUBLIC_MODULE; }
   "/*verilator sc_bv*/"                 { FL; return yVL_SC_BV; }
-  "/*verilator sc_clock*/"              { FL; return yVL_CLOCK; }
+  "/*verilator sc_clock*/"              { FL; yylval.fl->v3warn(DEPRECATED, "sc_clock is ignored"); FL_BRK; }
   "/*verilator sformat*/"               { FL; return yVL_SFORMAT; }
   "/*verilator split_var*/"             { FL; return yVL_SPLIT_VAR; }
-  "/*verilator systemc_clock*/"         { FL; return yVL_CLOCK; }
   "/*verilator tag"[^*]*"*/"            { FL; yylval.strp = PARSEP->newString(V3ParseImp::lexParseTag(yytext));
                                           return yVL_TAG; }
   "/*verilator tracing_off*/"           { FL_FWD; PARSEP->lexFileline()->tracingOn(false); FL_BRK; }

src/verilog.y

@@ -800,7 +800,6 @@ BISONPRE_VERSION(3.7,%define api.header.include {"V3ParseBison.h"})
 %token<fl>              yD_WRITEMEMH    "$writememh"
 %token<fl>              yD_WRITEO       "$writeo"
 
-%token<fl>              yVL_CLOCK               "/*verilator sc_clock*/"
 %token<fl>              yVL_CLOCKER             "/*verilator clocker*/"
 %token<fl>              yVL_CLOCK_ENABLE        "/*verilator clock_enable*/"
 %token<fl>              yVL_COVERAGE_BLOCK_OFF  "/*verilator coverage_block_off*/"
@@ -2563,8 +2562,7 @@ sigAttrList<nodep>:
 	;
 
 sigAttr<nodep>:
-		yVL_CLOCK				{ $$ = new AstAttrOf($1,AstAttrType::VAR_CLOCK); }
+		yVL_CLOCKER				{ $$ = new AstAttrOf($1,AstAttrType::VAR_CLOCKER); }
-	|	yVL_CLOCKER				{ $$ = new AstAttrOf($1,AstAttrType::VAR_CLOCKER); }
 	|	yVL_NO_CLOCKER				{ $$ = new AstAttrOf($1,AstAttrType::VAR_NO_CLOCKER); }
 	|	yVL_CLOCK_ENABLE			{ $$ = new AstAttrOf($1,AstAttrType::VAR_CLOCK_ENABLE); }
 	|	yVL_PUBLIC				{ $$ = new AstAttrOf($1,AstAttrType::VAR_PUBLIC); v3Global.dpi(true); }

test_regress/driver.pl

@@ -1848,11 +1848,7 @@ sub _print_advance_time {
     else { $set = "topp->"; }
 
     if ($self->sc) {
-        print $fh "#if (SYSTEMC_VERSION>=20070314)\n";
         print $fh "        sc_start(${time}, $Self->{sc_time_resolution});\n";
-        print $fh "#else\n";
-        print $fh "        sc_start(${time});\n";
-        print $fh "#endif\n";
     } else {
         if ($action) {
             print $fh "        ${set}eval();\n";

test_regress/t/t_clk_first_bad.out

@@ -1,4 +1,4 @@
-%Warning-DEPRECATED: t/t_clk_first_deprecated.v:12:14: sc_clock is deprecated and will be removed
+%Warning-DEPRECATED: t/t_clk_first_deprecated.v:12:14: sc_clock is ignored
    12 |    input clk /*verilator sc_clock*/ ;
       |              ^~~~~~~~~~~~~~~~~~~~~~
                      ... Use "/* verilator lint_off DEPRECATED */" and lint_on around source to disable this message.

test_regress/t/t_preproc_defines.out

@@ -20,6 +20,5 @@
 `define VERILATOR 1
 `define WITH_ARG(a) (a)(a)
 `define coverage_block_off /*verilator coverage_block_off*/
-`define systemc_clock /*verilator systemc_clock*/
 `define verilator 1
 `define verilator3 1

test_regress/t/t_trace_two_sc.cpp

@@ -48,19 +48,11 @@ int sc_main(int argc, char** argv) {
 #endif
     {
         clk = false;
-#if (SYSTEMC_VERSION>=20070314)
         sc_start(10, SC_NS);
-#else
-        sc_start(10);
-#endif
     }
     while (sc_time_stamp() < sim_time && !Verilated::gotFinish()) {
         clk = !clk;
-#if (SYSTEMC_VERSION>=20070314)
         sc_start(5, SC_NS);
-#else
-        sc_start(5);
-#endif
     }
     if (!Verilated::gotFinish()) {
         vl_fatal(__FILE__, __LINE__, "main", "%Error: Timeout; never got a $finish");