Non-system libssl.so is not properly loaded

[Chi Lei]

I tried to compiled monit v5.17.1 from source code with a non-system openssl by specifying configure options, --with-ssl-incl-dir and --with-ssl-lib-dir, on my linux development box:

Linux 3.10.0-229.20.1.el7.x86_64 #1 SMP Tue Nov 3 19:10:07 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

The installation ran smoothly without any issues and from the make output I could tell the ssl libraries were found correctly from the specified locations. However, when I tried to run the monit binary I got error below:

/opt/luban/env/development.uber/.luban/pkg/monit/versions/5.17.1/bin/monit -V
/opt/luban/env/development.uber/.luban/pkg/monit/versions/5.17.1/bin/monit: error while loading shared libraries: libssl.so.1.0.0: cannot open shared object file: No such file or directory

then I ran "ldd" command and confirmed that monit couldn't find libssl properly:

ldd /opt/luban/env/development.uber/.luban/pkg/monit/versions/5.17.1/bin/monit
        linux-vdso.so.1 =>  (0x00007ffd1fd99000)
        libm.so.6 => /lib64/libm.so.6 (0x00007ff95f747000)
        libpam.so.0 => /lib64/libpam.so.0 (0x00007ff95f538000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ff95f31b000)
        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007ff95f0e4000)
        libresolv.so.2 => /lib64/libresolv.so.2 (0x00007ff95eeca000)
        libnsl.so.1 => /lib64/libnsl.so.1 (0x00007ff95ecb0000)
        libssl.so.1.0.0 => not found
        libcrypto.so.1.0.0 => not found
        libc.so.6 => /lib64/libc.so.6 (0x00007ff95e8ee000)
        libaudit.so.1 => /lib64/libaudit.so.1 (0x00007ff95e6c7000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007ff95e4c3000)
        /lib64/ld-linux-x86-64.so.2 (0x00007ff95fa51000)
        libfreebl3.so => /lib64/libfreebl3.so (0x00007ff95e2bf000)

I then tried installing monit with the system openssl and the installation was successfully, monit could run properly without any errors like above.

Therefore, I suspect the given ssl header and lib locations were not properly handled in run-time although they were used during compilation.

Feel free to let me know if you want me to provide extra information.

Thank you very much!

Chi

[Tildeslash]

It is not monit issue - you just need to set the path to non-system library in loader (e.g. via LD_LIBRARY_PATH environment variable when executing monit).

Other option is to link monit with static SSL library.

[Chi Lei]

Thanks a lot for the quick reply! I didn't notice there was an option to link monit with static SSL library. Tried it and worked fine.

Thanks again for the great support!

Chi