/lib/cpp not found in c-mode

[Nick Roberts]

 > I just got the following backtrace.  Any idea what's up?
 > I indeed don't have /lib/cpp (this is on MacOSX) but it shouldn't prevent me
 > from opening a C file,

In this case, how does your system find c-macro-preprocessor?. Do you have
/usr/ccs/lib/cpp? If so, oes it support the -dM switch option (or equivalent)?

Nick


(defcustom c-macro-preprocessor
  ;; Cannot rely on standard directory on MS-DOS to find CPP.  In
  ;; fact, cannot rely on having cpp.exe, either, in latest GCC
  ;; versions.
  (cond ((eq system-type 'ms-dos) "gcc -E -C -o - -")
        ;; Solaris has it in an unusual place.
        ((and (string-match "^[^-]*-[^-]*-\\(solaris\\|sunos5\\)"
                            system-configuration)
              (file-exists-p "/opt/SUNWspro/SC3.0.1/bin/acomp"))
         "/opt/SUNWspro/SC3.0.1/bin/acomp -C -E")
        ((file-exists-p "/usr/ccs/lib/cpp") "/usr/ccs/lib/cpp -C")
        (t "/lib/cpp -C"))
  "The preprocessor used by the cmacexp package.

If you change this, be sure to preserve the `-C' (don't strip comments)
option, or to set an equivalent one."
  :type 'string
  :group 'c-macro)