Can't compile pcre2 on sparc

Hi,

It seems pcre2 (prerequisite to git-base) fails to compile on NetBSD 7.1.1 on sparc :

--- libpcre2-16.la ---
CCLD libpcre2-16.la
--- libpcre2-32.la ---
CCLD libpcre2-32.la
--- src/libpcre2_8_la-pcre2_match.lo ---
gcc: internal compiler error: Killed (program cc1)
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
*** [src/libpcre2_8_la-pcre2_match.lo] Error code 1

make[1]: stopped in /usr/pkgsrc/devel/pcre2/work/pcre2-10.30
1 error

make[1]: stopped in /usr/pkgsrc/devel/pcre2/work/pcre2-10.30
*** [all] Error code 2

make: stopped in /usr/pkgsrc/devel/pcre2/work/pcre2-10.30
1 error

make: stopped in /usr/pkgsrc/devel/pcre2/work/pcre2-10.30
*** Error code 2

Stop.
make[1]: stopped in /usr/pkgsrc/devel/pcre2
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/pcre2

Tried on ADM64 on a fresh OS install and it compiles without any error. Any idea ?