configure.ac | 2 1 1 - 0 !
1 file changed, 1 insertion( ), 1 deletion(-)

 fixes ftbfs with automake (>= 1.13.2)
 Error: "using '$(srcdir)' in TESTS is currently broken"

configure.ac | 2 1 1 - 0 !
1 file changed, 1 insertion( ), 1 deletion(-)

 don't build -werror=nested-externs
 as this breaks a test used for GLIB_WITH_NLS
 which in turn makes the locales directory come out wrong.

src/mathfunc.h | 1 0 1 - 0 !
1 file changed, 1 deletion(-)

 fixes ftbfs thrown by dh_girepository
```
girepository-1.0/Gnm-1.12.typelib.c:3113:1: error: too few arguments to function 'trunc'
 3113 | trunc ();
      | ^~~~~
```