Hello,

When built with OpenSSL support enabled (which happens to be the default configuration) the libzrtpcpp port included in FreeBSD does not produce a functional shared library, because a bug in src/CMakeLists.txt in the source code of libzrtpcpp prevents the shared library from including essential object files.

The problem can be reproduced using the shell snippets in the "How to repeat the problem" section.

Please note: the linker warnings related to the version of libcrypto and libssl are not related to this bug.

Thank you,

M. Vefa Bicakci

Fix: Please find attached a patch which fixes this issue.


Patch attached with submission follows:
How-To-Repeat: # # install the libzrtpcpp port or the package.
$ touch abc.c
$ gcc46 -o abc abc.c -L/usr/local/lib -lzrtpcpp  -lcrypto -lssl
/usr/local/bin/ld: warning: libssl.so.7, needed by //usr/local/lib/libcommoncpp.so.6, may conflict with libssl.so.8
/usr/local/bin/ld: warning: libcrypto.so.7, needed by //usr/local/lib/libcommoncpp.so.6, may conflict with libcrypto.so.8
/usr/lib/crt1.o: In function `_start':
/root/pcbsd-build10.0/git/freebsd/lib/csu/amd64/crt1.c:(.text+0x14b): undefined reference to `main'
/usr/local/lib/libzrtpcpp.so: undefined reference to `closeSha384Context(void*, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::ZrtpDH(char const*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::computeSecretKey(unsigned char*, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha256(unsigned char**, unsigned int*, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `randomZRTP(unsigned char*, int)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `hmac_sha256(unsigned char*, unsigned int, unsigned char*, int, unsigned char*, unsigned int*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::getPubKeyBytes(unsigned char*) const'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha256Ctx(void*, unsigned char**, unsigned int*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `aesCfbEncrypt(unsigned char*, int, unsigned char*, unsigned char*, int)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha384Ctx(void*, unsigned char*, unsigned int)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `createSha256Context()'
/usr/local/lib/libzrtpcpp.so: undefined reference to `createSha384Context()'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::~ZrtpDH()'
/usr/local/lib/libzrtpcpp.so: undefined reference to `closeSha256Context(void*, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha384(unsigned char**, unsigned int*, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `hmac_sha384(unsigned char*, unsigned int, unsigned char*, int, unsigned char*, unsigned int*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `hmac_sha384(unsigned char*, unsigned int, unsigned char**, unsigned int*, unsigned char*, unsigned int*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::checkPubKey(unsigned char*) const'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha256(unsigned char*, unsigned int, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha384Ctx(void*, unsigned char**, unsigned int*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `aesCfbDecrypt(unsigned char*, int, unsigned char const*, unsigned char*, int)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::getDHtype()'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::generatePublicKey()'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha384(unsigned char*, unsigned int, unsigned char*)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `ZrtpDH::getDhSize() const'
/usr/local/lib/libzrtpcpp.so: undefined reference to `sha256Ctx(void*, unsigned char*, unsigned int)'
/usr/local/lib/libzrtpcpp.so: undefined reference to `hmac_sha256(unsigned char*, unsigned int, unsigned char**, unsigned int*, unsigned char*, unsigned int*)'
collect2: ld returned 1 exit status