问题
I am trying to install R-Package RPostgreSQL, but getting the following error,
Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared object '/usr/lib64/R/library/RPostgreSQL/libs/RPostgreSQL.so':
/usr/lib64/R/library/RPostgreSQL/libs/RPostgreSQL.so: undefined symbol: PQpass
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/usr/lib64/R/library/RPostgreSQL’
I have libpq and postgresql-dev installed. All the library files are in the directory
/usr/lib64/pgsql/ and all header files are in the directory
/usr/include/pgsql/
Postgre Version - 9.3.4
R Version - 3.0.2
Operating System - CentOS-6.4
I am missing some small thing, but unable to find out why this is happening.
What am I doing wrong? How to correct this?
Thanks :)
回答1:
Looks like the pgsql libraries are no longer installed in their previous locations. I linked both:
ln -s /usr/pgsql-9.3/lib /usr/lib/pgsql
ln -s /usr/pgsql-9.3/include /usr/include/pgsql
This worked for me :)
回答2:
The package RPostgreSQL checks for PostgreSQL libraries only in the following directory paths,
/usr/lib
/usr/lib/pgsql
/usr/lib/postgresql
/usr/local/lib
/usr/local/lib/pgsql
/usr/local/lib/postgresql
/usr/local/pgsql/lib
/usr/local/postgresql/lib
/opt/lib
/opt/lib/pgsql
/opt/lib/postgresql
/opt/local/lib
/opt/local/lib/postgresql
/opt/local/lib/postgresql84
/sw/opt/postgresql-8.4/lib
/Library/PostgresPlus/8.4SS/lib
/sw/lib
It does not check for the directories either in LD_LIBRARY_PATH or in /etc/ld.so.conf.
So RPostgreSQL installation will be successful only if the PostgreSQL libraries exist in any of the above directories.
When I copied the libraries from /usr/lib64/pgsql to /usr/lib/pgsql and tried installing the package. It worked. :)
来源：https://stackoverflow.com/questions/23821506/rpostgresql-installation-error-rpostgresql-so-undefined-symbol-pqpass