postgresql pg_curl bug?

Hello,

I have install postgresql15 in jail.
I need the postgresql extension pg_curl.

cd pg_curl-2.1.1/
gmake install
cc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-
statement -Werror=vla -Werror=unguarded-availability-new -Wendif-labels
-Wmissing-format-attribute -Wcast-function-type -Wformat-security -fno-
strict-aliasing -fwrapv -Wno-unused-command-line-argument -Wno-
compound-token-split-by-macro -O2 -pipe  -fstack-protector-strong -fno-
strict-aliasing  -fPIC -DPIC -I. -I./ -
I/usr/local/include/postgresql/server -
I/usr/local/include/postgresql/internal  -I/usr/local/include -
I/usr/local/include -I/usr/local/include  -c -o pg_curl.o pg_curl.c
cc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-
statement -Werror=vla -Werror=unguarded-availability-new -Wendif-labels
-Wmissing-format-attribute -Wcast-function-type -Wformat-security -fno-
strict-aliasing -fwrapv -Wno-unused-command-line-argument -Wno-
compound-token-split-by-macro -O2 -pipe  -fstack-protector-strong -fno-
strict-aliasing  -fPIC -DPIC -shared -o pg_curl.so pg_curl.o -
L/usr/local/lib   -L/usr/local/lib -lpthread -L/usr/local/lib  -fstack-
protector-strong   -L/usr/local/lib -Wl,--as-needed -Wl,-
R'/usr/local/lib'  -lcurl
/bin/mkdir -p '/usr/local/lib/postgresql'
/bin/mkdir -p '/usr/local/share/postgresql/extension'
/bin/mkdir -p '/usr/local/share/postgresql/extension'
/usr/bin/install -c -m 755  pg_curl.so
'/usr/local/lib/postgresql/pg_curl.so'
/usr/bin/install -c -m 644 .//pg_curl.control
'/usr/local/share/postgresql/extension/'
/usr/bin/install -c -m 644 .//pg_curl--1.0--2.0.sql .//pg_curl--1.0.sql
.//pg_curl--2.0--2.1.sql .//pg_curl--2.0.sql .//pg_curl--2.1.sql 
'/usr/local/share/postgresql/extension/'

find /usr -name "*pg_curl*"
/usr/local/share/postgresql/extension/pg_curl--2.0.sql
/usr/local/share/postgresql/extension/pg_curl.control
/usr/local/share/postgresql/extension/pg_curl--2.1.sql
/usr/local/share/postgresql/extension/pg_curl--2.0--2.1.sql
/usr/local/share/postgresql/extension/pg_curl--1.0.sql
/usr/local/share/postgresql/extension/pg_curl--1.0--2.0.sql


In postgresql, the command:
 create extension pg_curl;
get the errormessage:

ftc=# create extension pg_curl;
FEHLER:  konnte Bibliothek »/usr/local/lib/postgresql/pg_curl.so« nicht
laden: /usr/local/lib/libidn2.so.0: Undefined symbol "strversc
mp@FBSD_1.7"

libidn2 is installed:

ls -l /usr/local/lib/libidn2*
root  wheel  281986 Feb  9  2023 /usr/local/lib/libidn2.a
root  wheel      16 Feb  9  2023 /usr/local/lib/libidn2.so ->
        libidn2.so.0.3.8
root  wheel      16 Feb  9  2023 /usr/local/lib/libidn2.so.0 ->
        libidn2.so.0.3.8
root  wheel  202256 Feb  9  2023 /usr/local/lib/libidn2.so.0.3.8

uname -a
FreeBSD ftc 13.2-RELEASE-p2 FreeBSD 13.2-RELEASE-p2 GENERIC amd64

Do you need more information?
What should I do?

Franz