cmake/Tests/CustomCommand/wrapper.cxx

#include <stdio.h>
#include <string.h>

int main(int argc, char* argv[])
{
  if (argc < 3) {
    fprintf(stderr, "Usage: %s <file1> <file2>\n", argv[0]);
    return 1;
  }
  FILE* fp = fopen(argv[1], "w");
  fprintf(fp, "extern int wrapped_help();\n");
  fprintf(fp, "int wrapped() { return wrapped_help(); }\n");
  fclose(fp);
  fp = fopen(argv[2], "w");
  fprintf(fp, "int wrapped_help() { return 5; }\n");
  fclose(fp);
#ifdef CMAKE_INTDIR
  const char* cfg = (argc >= 4) ? argv[3] : "";
  if (strcmp(cfg, CMAKE_INTDIR) != 0) {
    fprintf(stderr, "Did not receive expected configuration argument:\n"
                    "  expected [" CMAKE_INTDIR "]\n"
                    "  received [%s]\n",
            cfg);
    return 1;
  }
#endif
  return 0;
}