clang: warning: argument unused during compilation: '-rdynamic'
[-Wunused-command-line-argument]
warning: unknown warning option '-Wunused-but-set-parameter'; did you mean
      '-Wunused-parameter'? [-Wunknown-warning-option]
warning: unknown warning option '-Wmissing-parameter-type'
[-Wunknown-warning-option]
In file included from htscore.c:40:
In file included from ./htscore.h:81:
In file included from ./htslib.h:67:
./htsbasenet.h:76:10: fatal error: 'openssl/ssl.h' file not found
#include <openssl/ssl.h>
         ^
2 warnings and 1 error generated.
make[2]: *** [libhttrack_la-htscore.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2