goffice 0.10.12 requires, as per configure.ac lasem-0.4 >= 0.4.1 (or lasem-0.6).

A build with lasem 0.4.1 though fails like this

[ 1172s] make[2]: Entering directory '/home/abuild/rpmbuild/BUILD/goffice-0.10.12/plugins/lasem'
[ 1172s]   CC       component.lo
[ 1172s]   ITMRG  plugin.xml
[ 1174s] component.c: In function 'go_lasem_component_edit':
[ 1174s] component.c:194:40: warning: 'GtkStock' is deprecated [-Wdeprecated-declarations]
[ 1174s]                                         GTK_STOCK_CLOSE, GTK_RESPONSE_CANCEL,
[ 1174s]                                         ^
[ 1174s] component.c:195:40: warning: 'GtkStock' is deprecated [-Wdeprecated-declarations]
[ 1174s]                                         GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
[ 1174s]                                         ^
[ 1174s] component.c: In function 'go_lasem_component_get_data':
[ 1174s] component.c:240:3: error: implicit declaration of function 'lsm_itex_to_mathml' [-Werror=implicit-function-declaration]
[ 1174s]    *data = lsm_itex_to_mathml (buf, strlen (buf));
[ 1174s]    ^
[ 1174s] component.c:240:3: error: nested extern declaration of 'lsm_itex_to_mathml' [-Werror=nested-externs]
[ 1174s] component.c:240:9: warning: assignment makes pointer from integer without a cast [enabled by default]
[ 1174s]    *data = lsm_itex_to_mathml (buf, strlen (buf));
[ 1174s]          ^
[ 1174s] component.c:243:33: error: 'lsm_itex_free_mathml_buffer' undeclared (first use in this function)
[ 1174s]    *clearfunc = (GDestroyNotify) lsm_itex_free_mathml_buffer;
[ 1174s]                                  ^
[ 1174s] component.c:243:33: note: each undeclared identifier is reported only once for each function it appears in
[ 1174s] cc1: some warnings being treated as errors
[ 1174s] Makefile:520: recipe for target 'component.lo' failed