snc: do not hard-code main, instead include seqMain.c

Of course we also provide a default seqMain.c and install it.

src/snc/Makefile

@@ -3,6 +3,8 @@ include $(TOP)/configure/CONFIG
 #----------------------------------------
 #  ADD MACRO DEFINITIONS AFTER THIS LINE
 
+INC += seqMain.c
+
 #  Internal debug control
 #USR_CPPFLAGS = -DDEBUG
 

src/snc/gen_code.c

@@ -87,33 +87,8 @@ void generate_code(Program *p)
 /* Generate main program */
 static void gen_main(char *prog_name)
 {
-	printf("\n/* Main program */\n");
-	printf("#include \"epicsThread.h\"\n");
-	printf("#include \"iocsh.h\"\n");
-	printf("\n");
-	printf("int main(int argc,char *argv[]) {\n");
-	printf("    char * macro_def;\n");
-	printf("    int callIocsh = TRUE;\n");
-	printf("\n");
-	printf("    if(argc>1 && strcmp(argv[1],\"-s\")==0) {\n");
-	printf("        callIocsh = TRUE;\n");
-	printf("        --argc; ++argv;\n");
-	printf("    }\n");
-	printf("    if(argc>1 && strcmp(argv[1],\"-S\")==0) {\n");
-	printf("        --argc; ++argv;\n");
-	printf("        callIocsh = FALSE;\n");
-	printf("    }\n");
-	printf("    macro_def = (argc>1)?argv[1]:NULL;\n");
-	printf("    seqRegisterSequencerProgram(&%s);\n", prog_name);
-	printf("    seq(&%s, macro_def, 0);\n", prog_name);
-	printf("    if(callIocsh) {\n");
-	printf("        seqRegisterSequencerCommands();\n");
-	printf("        iocsh(0);\n");
-	printf("    } else {\n");
-	printf("        epicsThreadExitMain();\n");
-	printf("    }\n");
-	printf("    return(0);\n");
-	printf("}\n");
+	printf("\n#define PROG_NAME %s\n", prog_name);
+	printf("#include \"seqMain.c\"\n");
 }
 
 /* Generate preamble (includes, defines, etc.) */

src/snc/seqMain.c

+/* Default main program */
+#include "epicsThread.h"
+#include "iocsh.h"
+
+int main(int argc,char *argv[]) {
+    char * macro_def;
+    int callIocsh = TRUE;
+
+    if(argc>1 && strcmp(argv[1],"-s")==0) {
+        callIocsh = TRUE;
+        --argc; ++argv;
+    }
+    if(argc>1 && strcmp(argv[1],"-S")==0) {
+        --argc; ++argv;
+        callIocsh = FALSE;
+    }
+    macro_def = (argc>1)?argv[1]:NULL;
+    seqRegisterSequencerProgram(&PROG_NAME);
+    seq(&PROG_NAME, macro_def, 0);
+    if(callIocsh) {
+        seqRegisterSequencerCommands();
+        iocsh(0);
+    } else {
+        epicsThreadExitMain();
+    }
+    return(0);
+}