Handle missing files.

Any .java file that isn't in our source directory must be in a different source
directory and shoule be ignored. Example: src and test directories used to
separate unit tests from source code.

This isn't an elegant solution, but it fixes my problem. It won't work
correctly if you want your unit tests to recompile when your source code has
changed.

Author: pdex

jdep.c

@@ -24,6 +24,7 @@
   Written by Chip Morningstar.
 */
 
+#include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -153,6 +154,7 @@ analyzeClassFile(char *name)
 {
     FILE *outfyle;
     char outfilename[1000];
+    char depfilename[1000];
     char *deps[10000];
     int depCount;
     int i;
@@ -181,7 +183,10 @@ analyzeClassFile(char *name)
         fprintf(outfyle, "%s%s.class: \\\n", ClassRoot, name);
         for (i = 0; i < depCount; ++i) {
             if (index(deps[i], '$') == NULL) {
-                fprintf(outfyle, "  %s%s.java\\\n", JavaRoot, deps[i]);
+                snprintf(depfilename, sizeof(depfilename), "%s%s.java", JavaRoot, deps[i]);
+                if (access(depfilename, F_OK) != -1) {
+                    fprintf(outfyle, "  %s%s.java\\\n", JavaRoot, deps[i]);
+                }
             }
         }
         fprintf(outfyle, "\n");