Force linking in standard mode (might be unnecessary here since the 
compilation of the C code has been disabled, but..)
Index: camlpdf/makefile
===================================================================
--- camlpdf.orig/makefile	2009-06-02 18:34:18.000000000 +0200
+++ camlpdf/makefile	2009-06-02 18:35:15.000000000 +0200
@@ -28,6 +28,9 @@
 
 RESULT = camlpdf
 
+# Avoid custom binary
+NO_CUSTOM = yes
+
 TRASH = tl prog.tex camlpdf.tex camlpdf.aux camlpdf.log camlpdf.toc 
 
 # ML Libraries