diff -Nur guile-1.8.7.orig/libguile/guile-snarf-docs.in guile-1.8.7/libguile/guile-snarf-docs.in --- guile-1.8.7.orig/libguile/guile-snarf-docs.in 2009-07-03 18:19:00.000000000 -0400 +++ guile-1.8.7/libguile/guile-snarf-docs.in 2009-11-19 12:55:32.487266268 -0500 @@ -23,4 +23,4 @@ ## Let the user override the preprocessor autoconf found. test -n "${CPP+set}" || CPP="@CPP@" -${CPP} -DSCM_MAGIC_SNARF_DOCS "$@" +${CPP} -P -DSCM_MAGIC_SNARF_DOCS "$@"