How to get my installed lib recognized by R - r

Question

To put it simply, my R could not recognize my "libssl.so.1.0.0" installed.
Wondering any one has any suggestion.
For the details:
I was trying to install a R package "devtools",
but had one issue.
install.packages("devtools")
...
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared object '/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/git2r/libs/git2r.so':
libssl.so.1.0.0: cannot open shared object file: No such file or directory
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/git2r’
ERROR: dependency ‘openssl’ is not available for package ‘httr’
* removing ‘/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/httr’
ERROR: dependencies ‘httr’, ‘git2r’ are not available for package ‘devtools’
* removing ‘/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/devtools’
...
it seemed that "libssl.so.1.0.0" is required.
But when I checked which "openssl" I am using:
$ which openssl
~/.anaconda/bin/openssl
$ ldd ~/.anaconda/bin/openssl
linux-vdso.so.1 => (0x00007fffb0de8000)
libssl.so.1.0.0 => /somewhere/Jun/.anaconda/bin/../lib/libssl.so.1.0.0 (0x00002b0618dca000)
libcrypto.so.1.0.0 => /somewhere/Jun/.anaconda/bin/../lib/libcrypto.so.1.0.0 (0x00002b0619041000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000003cae000000)
libc.so.6 => /lib64/libc.so.6 (0x0000003cad800000)
/lib64/ld-linux-x86-64.so.2 (0x0000003cad400000)
So it seems to me that "libssl.so.1.0.0" was there, the problem is that R could not find it.
Any suggestion to solve this?
Update:
Another tempt (following 42-'s kind suggestion in the comments)
Adding dependencies=TRUE for "install.packages" command
install.packages("devtools", dependencies=TRUE)
1: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘openssl’ had non-zero exit status
2: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘git2r’ had non-zero exit status
3: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘httr’ had non-zero exit status
4: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘covr’ had non-zero exit status
5: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘gmailr’ had non-zero exit status
6: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘devtools’ had non-zero exit status
7: In install.packages("devtools", dependencies = TRUE) :
installation of package ‘lintr’ had non-zero exit status
tried to install "git2r" first:
install.packages("git2r",dependencies=TRUE)
** R
** inst
** preparing package for lazy loading
Creating a generic function for ‘summary’ from package ‘base’ in package ‘git2r’
Creating a generic function for ‘diff’ from package ‘base’ in package ‘git2r’
Creating a generic function for ‘merge’ from package ‘base’ in package ‘git2r’
Creating a generic function for ‘plot’ from package ‘graphics’ in package ‘git2r’
Creating a generic function for ‘head’ from package ‘utils’ in package ‘git2r’
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared object '/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/git2r/libs/git2r.so':
libssl.so.1.0.0: cannot open shared object file: No such file or directory
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/host/somewhere/Jun/Programme/R-3.3.1/lib64/R/library/git2r’
The downloaded source packages are in
‘/tmp/Rtmp55IwjF/downloaded_packages’
Warning message:
In install.packages("git2r", dependencies = TRUE) :
installation of package ‘git2r’ had non-zero exit status