Something

/usr/bin/guile-snarf -o core.x core.c -DHAVE_CONFIG_H  -I../../lib/includes -I../../lib/includes -I../../libextra/includes -I../.. -I.  -O2 -march=native -pipe -I/usr/include/p11-kit-1   -Wno-strict-prototypes  -pthread
make[3]: Leaving directory `/usr/src/gnutls-2.12.11/guile/src'
make[3]: Leaving directory `/usr/src/gnutls-2.12.11/guile/src'
extracting Texinfo doc from `../guile/src/extra.c'...  Backtrace:
In unknown file:
   ?: 0* [parse-documentation-item " loca"]
   ?: 1* (letrec ((read-strings #)) (let* (# #) (if # # #)))
In ../guile/modules/system/documentation/c-snarf.scm:
 103: 2  (let* (# #) (if # # #))
In unknown file:
   ...
   ?: 3  [scm-error misc-error #f "~A ~S" ("invalid documentation item" "loca") #f]

<unnamed port>: In procedure scm-error in expression (scm-error (quote misc-error) #f ...):
<unnamed port>: invalid documentation item "loca"
make[2]: *** [extra.c.texi] Error 1
make[2]: *** Waiting for unfinished jobs....
extracting Texinfo doc from `../guile/src/core.c'...  Backtrace:
In unknown file:
   ?: 0* [parse-documentation-item " loca"]
   ?: 1* (letrec ((read-strings #)) (let* (# #) (if # # #)))
In ../guile/modules/system/documentation/c-snarf.scm:
 103: 2  (let* (# #) (if # # #))
In unknown file:
   ...
   ?: 3  [scm-error misc-error #f "~A ~S" ("invalid documentation item" "loca") #f]

<unnamed port>: In procedure scm-error in expression (scm-error (quote misc-error) #f ...):
<unnamed port>: invalid documentation item "loca"
make[2]: *** [core.c.texi] Error 1
make[2]: Leaving directory `/usr/src/gnutls-2.12.11/doc'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/gnutls-2.12.11'
make: *** [all] Error 2
Creating /var/log/lunar/compile/gnutls-2.12.11.bz2