COMP: reduce compiler warnings for gcc-7

- ignore implicit-fallthrough for ragel generated code.

- add -Wno-deprecated-declarations for c++LESSWARN.
  These principally associated with older CGAL versions and their use
  of particular mpfr routines.

src/fileFormats/stl/STLAsciiParseRagel.rl

@@ -33,6 +33,9 @@ Description
 #include "STLReader.H"
 #include "OSspecific.H"
 
+// Ragel switch/case logic may have several implicit fallthroughs
+#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+
 // https://en.wikipedia.org/wiki/STL_%28file_format%29#ASCII_STL
 //
 // Format

wmake/rules/General/Gcc/c++

@@ -14,4 +14,5 @@ c++WARN     = \
 
 c++LESSWARN = \
     -Wno-old-style-cast -Wno-unused-local-typedefs -Wno-array-bounds \
+    -Wno-deprecated-declarations \
     -fpermissive

wmake/src/wmkdepend.cpp

@@ -73,6 +73,9 @@ Note
 #include <unordered_set>
 #include <vector>
 
+// Ragel switchs may have several implicit fallthroughs
+#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+
 // Length of the input read buffer
 #define INBUFLEN 16384
 
@@ -309,7 +312,7 @@ namespace Files
 // Can use 'variable p xxx;' etc to change these names
 
 
-#line 334 "wmkdepend.rl"
+#line 337 "wmkdepend.rl"
 
 
 
@@ -318,14 +321,14 @@ namespace Files
 //
 
 
-#line 322 "wmkdepend.cpp"
+#line 325 "wmkdepend.cpp"
 static const int wmkdep_start = 21;
 static const int wmkdep_error = 0;
 
 static const int wmkdep_en_main = 21;
 
 
-#line 342 "wmkdepend.rl"
+#line 345 "wmkdepend.rl"
 
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -348,7 +351,7 @@ void processFile(const std::string& fileName)
     int act, cs;
 
     
-#line 352 "wmkdepend.cpp"
+#line 355 "wmkdepend.cpp"
 	{
 	cs = wmkdep_start;
 	ts = 0;
@@ -356,7 +359,7 @@ void processFile(const std::string& fileName)
 	act = 0;
 	}
 
-#line 363 "wmkdepend.rl"
+#line 366 "wmkdepend.rl"
    /* ^^^ FSM initialization here ^^^ */;
 
     // Local token start
@@ -401,7 +404,7 @@ void processFile(const std::string& fileName)
         }
 
         
-#line 405 "wmkdepend.cpp"
+#line 408 "wmkdepend.cpp"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -420,35 +423,35 @@ tr0:
 	}
 	goto st21;
 tr2:
-#line 332 "wmkdepend.rl"
+#line 335 "wmkdepend.rl"
 	{te = p+1;}
 	goto st21;
 tr17:
-#line 332 "wmkdepend.rl"
+#line 335 "wmkdepend.rl"
 	{{p = ((te))-1;}}
 	goto st21;
 tr21:
-#line 327 "wmkdepend.rl"
+#line 330 "wmkdepend.rl"
 	{te = p+1;}
 	goto st21;
 tr29:
-#line 330 "wmkdepend.rl"
+#line 333 "wmkdepend.rl"
 	{te = p+1;}
 	goto st21;
 tr31:
-#line 329 "wmkdepend.rl"
+#line 332 "wmkdepend.rl"
 	{te = p+1;}
 	goto st21;
 tr36:
-#line 324 "wmkdepend.rl"
+#line 327 "wmkdepend.rl"
 	{te = p;p--;}
 	goto st21;
 tr37:
-#line 332 "wmkdepend.rl"
+#line 335 "wmkdepend.rl"
 	{te = p;p--;}
 	goto st21;
 tr38:
-#line 330 "wmkdepend.rl"
+#line 333 "wmkdepend.rl"
 	{te = p;p--;}
 	goto st21;
 st21:
@@ -461,7 +464,7 @@ st21:
 case 21:
 #line 1 "NONE"
 	{ts = p;}
-#line 465 "wmkdepend.cpp"
+#line 468 "wmkdepend.cpp"
 	switch( (*p) ) {
 		case 10: goto st23;
 		case 11: goto tr34;
@@ -482,14 +485,14 @@ case 1:
 tr32:
 #line 1 "NONE"
 	{te = p+1;}
-#line 324 "wmkdepend.rl"
+#line 327 "wmkdepend.rl"
 	{act = 1;}
 	goto st22;
 st22:
 	if ( ++p == pe )
 		goto _test_eof22;
 case 22:
-#line 493 "wmkdepend.cpp"
+#line 496 "wmkdepend.cpp"
 	switch( (*p) ) {
 		case 10: goto st23;
 		case 11: goto tr34;
@@ -511,14 +514,14 @@ case 23:
 tr34:
 #line 1 "NONE"
 	{te = p+1;}
-#line 324 "wmkdepend.rl"
+#line 327 "wmkdepend.rl"
 	{act = 1;}
 	goto st24;
 st24:
 	if ( ++p == pe )
 		goto _test_eof24;
 case 24:
-#line 522 "wmkdepend.cpp"
+#line 525 "wmkdepend.cpp"
 	switch( (*p) ) {
 		case 10: goto st23;
 		case 32: goto tr34;
@@ -616,14 +619,14 @@ case 10:
 	}
 	goto tr12;
 tr12:
-#line 312 "wmkdepend.rl"
+#line 315 "wmkdepend.rl"
 	{ tok = p; /* Local token start */ }
 	goto st11;
 st11:
 	if ( ++p == pe )
 		goto _test_eof11;
 case 11:
-#line 627 "wmkdepend.cpp"
+#line 630 "wmkdepend.cpp"
 	switch( (*p) ) {
 		case 10: goto tr15;
 		case 34: goto tr16;
@@ -632,7 +635,7 @@ case 11:
 tr13:
 #line 1 "NONE"
 	{te = p+1;}
-#line 312 "wmkdepend.rl"
+#line 315 "wmkdepend.rl"
 	{ tok = p; /* Local token start */ }
 	goto st25;
 tr15:
@@ -643,7 +646,7 @@ st25:
 	if ( ++p == pe )
 		goto _test_eof25;
 case 25:
-#line 647 "wmkdepend.cpp"
+#line 650 "wmkdepend.cpp"
 	if ( (*p) == 34 )
 		goto tr19;
 	goto st12;
@@ -655,26 +658,26 @@ case 12:
 		goto tr19;
 	goto st12;
 tr19:
-#line 313 "wmkdepend.rl"
+#line 316 "wmkdepend.rl"
 	{ processFile(std::string(tok, (p - tok))); }
 	goto st13;
 st13:
 	if ( ++p == pe )
 		goto _test_eof13;
 case 13:
-#line 666 "wmkdepend.cpp"
+#line 669 "wmkdepend.cpp"
 	if ( (*p) == 10 )
 		goto tr21;
 	goto st13;
 tr16:
-#line 313 "wmkdepend.rl"
+#line 316 "wmkdepend.rl"
 	{ processFile(std::string(tok, (p - tok))); }
 	goto st14;
 st14:
 	if ( ++p == pe )
 		goto _test_eof14;
 case 14:
-#line 678 "wmkdepend.cpp"
+#line 681 "wmkdepend.cpp"
 	if ( (*p) == 10 )
 		goto tr21;
 	goto st14;
@@ -705,7 +708,7 @@ st26:
 	if ( ++p == pe )
 		goto _test_eof26;
 case 26:
-#line 709 "wmkdepend.cpp"
+#line 712 "wmkdepend.cpp"
 	if ( (*p) == 42 )
 		goto st18;
 	goto st17;
@@ -738,14 +741,14 @@ case 19:
 tr30:
 #line 1 "NONE"
 	{te = p+1;}
-#line 330 "wmkdepend.rl"
+#line 333 "wmkdepend.rl"
 	{act = 4;}
 	goto st27;
 st27:
 	if ( ++p == pe )
 		goto _test_eof27;
 case 27:
-#line 749 "wmkdepend.cpp"
+#line 752 "wmkdepend.cpp"
 	if ( (*p) == 10 )
 		goto tr2;
 	goto st1;
@@ -820,7 +823,7 @@ cs = 0;
 	_out: {}
 	}
 
-#line 406 "wmkdepend.rl"
+#line 409 "wmkdepend.rl"
        /* ^^^ FSM execution here ^^^ */;
 
         if (0 == cs)

wmake/src/wmkdepend.rl

@@ -71,6 +71,9 @@ Note
 #include <unordered_set>
 #include <vector>
 
+// Ragel switchs may have several implicit fallthroughs
+#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+
 // Length of the input read buffer
 #define INBUFLEN 16384