Re: cannot make gcc report undeclared builtins

On 1/31/24 03:23, Simon Josefsson via Bug reports for autoconf wrote:

> https://buildd.debian.org/status/fetch.php?pkg=libidn2&arch=loong64&ver=2.3.7-1&stamp=1706360630&raw=0


Here's the crucial part of that log:

> configure:15961: checking for size_t
> configure:15961: gcc -c -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 conftest.c >&5
> In file included from /usr/include/linux/stat.h:5,
>                  from /usr/include/loongarch64-linux-gnu/bits/statx.h:31,
>                  from /usr/include/loongarch64-linux-gnu/sys/stat.h:465,
>                  from conftest.c:72:
> /usr/include/linux/types.h:5:10: fatal error: asm/types.h: No such file or directory
>     5 | #include <asm/types.h>
>       |          ^~~~~~~~~~~~~
> compilation terminated.


It appears that '#include <sys/stat.h>' doesn't work in some cases, and 
I suggest looking into why that is.