#598 Project does not compile

[HyP3r]

Hi, I am trying to compile the project with Debian 11 and I get the following error:

make[1]: Entering directory '/root/opalvoip-opal'
make -C /root/opalvoip-opal/src/rtp/libsrtp
ar cr libsrtp2.a srtp/srtp.o srtp/ekt.o crypto/cipher/cipher.o crypto/cipher/null_cipher.o crypto/cipher/aes_icm_ossl.o crypto/cipher/aes_gcm_ossl.o crypto/hash/null_auth.o crypto/hash/auth.o crypto/hash
/hmac_ossl.o crypto/math/datatypes.o crypto/math/stat.o crypto/kernel/crypto_kernel.o crypto/kernel/alloc.o crypto/kernel/key.o crypto/kernel/err.o crypto/replay/rdb.o crypto/replay/rdbx.o crypto/replay/
ut_sim.o
ranlib libsrtp2.a
gcc -DHAVE_CONFIG_H -Icrypto/include -I./include -I./crypto/include  -fPIC -Wall -pedantic -Wstrict-prototypes -O4 -fexpensive-optimizations -funroll-loops  -L.  -o crypto/test/cipher_driver crypto/test/
cipher_driver.c test/getopt_s.c libsrtp2.a -lcrypto -ldl -pthread  -lsrtp2
gcc -DHAVE_CONFIG_H -Icrypto/include -I./include -I./crypto/include  -fPIC -Wall -pedantic -Wstrict-prototypes -O4 -fexpensive-optimizations -funroll-loops  -I./test -L.  -o crypto/test/datatypes_driver
crypto/test/datatypes_driver.c test/util.c libsrtp2.a -lcrypto -ldl -pthread  -lsrtp2
/usr/bin/ld: libsrtp2.a(datatypes.o):(.bss+0x0): multiple definition of `bit_string'; /tmp/ccF9Usjy.o:(.bss+0x0): first defined here
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:215: crypto/test/datatypes_driver] Error 1
make[2]: *** [/root/opalvoip-opal/make/toplevel.mak:508: /root/opalvoip-opal/src/rtp/libsrtp/libsrtp2.a] Error 2
make[2]: *** Deleting file '/root/opalvoip-opal/src/rtp/libsrtp/libsrtp2.a'
make[1]: *** [/usr/local/share/ptlib/make/post.mak:115: optshared] Error 2
make[1]: Leaving directory '/root/opalvoip-opal'
make: *** [/usr/local/share/ptlib/make/autoconf.mak:179: build_top_level] Error 2

It seems that in the file test/util.c and in the file crypto/math/datatypes.c the same variable is defined.