shithub: scc

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Add #error to cc1

--- a/cc1/cpp.c

+++ b/cc1/cpp.c

@@ -57,6 +57,13 @@

 	return s;

 }

+static char *

+usererr(char *s)

+{

+	fprintf(stderr, "%s:%u:error: #error %s\n", filename(), fileline(), s);

+	exit(-1);

+}

+

 char *

 preprocessor(char *p)

 {

@@ -65,11 +72,13 @@

 	static char **bp, *cmds[] = {

 		"include",

 		"pragma",

+		"error",

 		NULL

 	};

 	static char *(*funs[])(char *) = {

 		include,

-		pragma

+		pragma,

+		usererr

 	};

 	while (isspace(*p))