Building issues

[Carlos A. Garcia]

Dear users,

I'd tried to compile GNC V3. on Linux Mint  18.3 Sylvia, (Spanish 
language) and blocked in this stage:

[ 30%] Generating ../../lib/gnucash/scm/ccache/2.2/gnucash/core-utils.go
Backtrace:
In /usr/bin/guild:
     74:17 19 (main _)
In srfi/srfi-1.scm:
     640:9 18 (for-each #<procedure 563ec4171080 at scripts/compile.…> …)
In scripts/compile.scm:
    251:26 17 (_ _)
In system/base/target.scm:
      57:6 16 (with-target _ _)
In system/base/compile.scm:
     152:6 15 (compile-file _ #:output-file _ #:from _ #:to _ #:env _ …)
      43:4 14 (call-once _)
In ice-9/boot-9.scm:
     841:4 13 (with-throw-handler _ _ _)
In system/base/compile.scm:
     59:11 12 (_)
    155:11 11 (_ #<closed: file 563ec4393690>)
    235:18 10 (read-and-compile #<input: core-utils.scm 13> #:from _ # …)
    183:32  9 (compile-fold (#<procedure compile-tree-il (x e opts)>) …)
In ice-9/boot-9.scm:
    2312:4  8 (save-module-excursion #<procedure 563ec45eb840 at lang…>)
In language/scheme/compile-tree-il.scm:
     31:15  7 (_)
In ice-9/psyntax.scm:
   1235:36  6 (expand-top-sequence ((re-export #)) _ _ #f c (# load …) …)
   1182:24  5 (parse _ (("placeholder" placeholder)) ((top) #(# # …)) …)
    285:10  4 (parse _ (("placeholder" placeholder)) (()) _ c&e (# #) #)
In ice-9/boot-9.scm:
   2071:24  3 (call-with-deferred-observers #<procedure 563ec45eb640 …>)
    260:13  2 (for-each #<procedure 563ec45eb580 at ice-9/boot-9.scm…> …)
In unknown file:
            1 (scm-error misc-error #f "~A ~S" ("Undefined variab…" …) …)
In ice-9/boot-9.scm:
    752:25  0 (dispatch-exception _ _ _)

ice-9/boot-9.scm:752:25: In procedure dispatch-exception:
Undefined variable: gnc-build-userdata-path
libgnucash/core-utils/CMakeFiles/scm-core-utils.dir/build.make:61: fallo 
en las instrucciones para el objetivo 
'lib/gnucash/scm/ccache/2.2/gnucash/core-utils.go'
make[2]: *** [lib/gnucash/scm/ccache/2.2/gnucash/core-utils.go] Error 1
CMakeFiles/Makefile2:3847: fallo en las instrucciones para el objetivo 
'libgnucash/core-utils/CMakeFiles/scm-core-utils.dir/all'
make[1]: *** [libgnucash/core-utils/CMakeFiles/scm-core-utils.dir/all] 
Error 2
Makefile:160: fallo en las instrucciones para el objetivo 'all'
make: *** [all] Error 2


I could solved previous errors, but this is a mystery for me (I'm not an 
expert).

Any indication to follow?

Best Regards