[hackers] [scc] [driver] add support for building from intermediary files || Quentin Rameau

[git]

commit e353903fa9ba4bbd405ca46c6ac651c8c8fb3cc2
Author:     Quentin Rameau <quinq@fifth.space>
AuthorDate: Fri Jun 3 01:00:00 2016 +0200
Commit:     Quentin Rameau <quinq@fifth.space>
CommitDate: Fri Jun 3 01:10:26 2016 +0200

    [driver] add support for building from intermediary files

diff --git a/driver/posix/scc.c b/driver/posix/scc.c
index d3edc38..7c1a57a 100644
--- a/driver/posix/scc.c
+++ b/driver/posix/scc.c
@@ -99,6 +99,7 @@ inittool(int tool)
                        strcat(t->cmd, t->bin);
                        break;
                case AS:
+                       t->nargs = 2;
                        t->args[1] = "-o";
                        break;
                default:
@@ -142,12 +143,10 @@ settool(int tool, char *input, int output)
        static int fdin;
 
        switch (tool) {
-       case CC1:
-               t->args[t->nargs + 1] = input;
-               break;
        case AS:
                outfiles[output] = newfileext(input, "o");
-               t->args[2] = outfiles[output];
+               t->args[t->nargs] = outfiles[output];
+               t->args[3] = NULL;
                break;
        case TEE:
                switch (output) {
@@ -171,6 +170,8 @@ settool(int tool, char *input, int output)
        if (fdin) {
                t->in = fdin;
                fdin = 0;
+       } else {
+               t->args[t->nargs + 1] = input;
        }
 
        if (output < NR_TOOLS) {
@@ -208,6 +209,22 @@ spawn(int t)
                break;
        }
 }
+static int
+toolfor(char *file)
+{
+       char *dot = strrchr(file, '.');
+
+       if (dot) {
+               if (!strcmp(dot, ".c"))
+                       return CC1;
+               if (!strcmp(dot, ".qbe"))
+                       return QBE;
+               if (!strcmp(dot, ".as"))
+                       return AS;
+       }
+
+       die("scc: do not recognize filetype of %s", file);
+}
 
 static void
 build(char *file)
@@ -216,7 +233,7 @@ build(char *file)
        int i, st, tool, out, keepfile;
        static int preout;
 
-       for (tool = CC1; tool < NR_TOOLS; tool = out) {
+       for (tool = toolfor(file); tool < NR_TOOLS; tool = out) {
                keepfile = 0;
 
                switch (tool) {