pg_ctl: error while loading shared libraries: libpq.so.5 - postgresql

I'm trying to get postgres server status with:
sudo /etc/init.d/postgres status -u postgres
But getting following error:
/home/alex/olddisk/usr/local/pgsql/bin/pg_ctl: error while loading shared libraries: libpq.so.5: cannot open shared object file: No such file or directory
I added:
export LD_LIBRARY_PATH=""
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib/"
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/home/alex/olddisk/usr/local/pgsql/lib/"
to my .bashrc, but it didn't help.
Thank you.

I ran into this error when I built postgresql from source using the --prefix flag. Building from source installs the necessary shared libs to the libs folder under the prefix directory you specified, instead of the usual place installations put shared libs. To solve the problem I just added the [prefix].libs folder to the LD_LIBRARY_PATH environment variable. For example, after building postgres using --prefix /mike/sandbox/postgres, the below command solved the issue:
export LD_LIBRARY_PATH=/mike/sandbox/postgres/lib:$LD_LIBRARY_PATH

I think this issue is duplicated, I faced the same problem and posted a solution here.
try this:
1: Know the path of "libpq.so.5"
find / -name libpq.so.5
Output example: "/usr/pgsql-9.4/lib/libpq.so.5" If found nothing, check if you have already installed the suitable postgresql-libs for your postgresql version and your OS platform
2: Symbolic link that library in a "well known" library path like "/usr/lib":
ln -s /usr/pgsql-9.4/lib/libpq.so.5 /usr/lib/libpq.so.5
Attention: If your platform is 64 bit, you MUST also symbolic link to 64 bit libraries path:
ln -s /usr/pgsql-9.4/lib/libpq.so.5 /usr/lib64/libpq.so.5
3: Be happy !

Please ensure you have 'postgresql94' package installed as well (in addition to postgresql94-server, postgresql94-lib, postgresql94-devel and whatever other PG related package you already have). These libraries get installed along with that package.

Some ideas:
Your modified ~/.bashrc only takes effect when you start a new (interactive) shell. Though catching up on that will not help you because:
/etc/sudoers, your configuration file of sudo, probably specifies env_reset. This means, that /etc/init.d/postgres will not see the content of $LD_LIBRARY_PATH of your shell.
Insert debug statements in /etc/init.d/postgres to verify what I told you: echo "LDPATH: $LD_LIBRARY_PATH" >&2
Check /etc/init.d/postgres. Probably you will have to insert the third one of your export statements near the start of this script. Or you will have to update an existing export LD_LIBRARY_PATH= statement.

Have you installed the necessary libraries?
If you are using ubuntu try:
sudo apt-get install libpq libpq-dev

Related

How to fix diesel_cli link libpq.lib error with Postgres tools installed in Docker?

I'm trying (for hours now) to install the cargo crate diesel_cli for postgres. However, every time I run the recommended cargo command:
cargo install diesel_cli --no-default-features --features postgres
I wait a few minutes just to see the same build fail with this message:
note: LINK : fatal error LNK1181: cannot open input file 'libpq.lib'
error: aborting due to previous error
error: failed to compile `diesel_cli v1.4.1`, intermediate artifacts can be found at `C:\Users\<user name here>\AppData\Local\Temp\cargo-installUU2DtT`
Caused by:
could not compile `diesel_cli`.
I'm running postgres in a docker container and have the binaries on my C:\pgsql with the lib and bin directories both on the PATH so I can't figure out why it's not linking. What else could be required they didn't mention in the docs?
In my case the installation was successful but when I tried to run it this error occured.
maybe this would work for others who have the same problem:
open PowerShell
type in setx PQ_LIB_DIR "C:\Program Files\PostgreSQL\13\lib" (or any other path to your PostgreSQL lib)
restart your PC
run again
I had the same issue with WSL, if you're on Linux probably you could find PostgreSQL lib location and add it to your environment variables.
Update:
The answer below is a work around for older versions. Please check the possibility to execute cargo clean first
Original Version
Adding the folder to the PATH variable didn't help, at least in my case, as by some reason it is not used in the /LIBPATH parameter passed to link.exe.
In my case it was C:\Users\<username>\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib
You can see it in the beginning of the error message.
Copy libpq.lib in there and it will be used from there.
After installation diesel would require some other assemblies. Copy libcrypto-1_1-x64.dll, libiconv-2.dll and libssl-1_1-x64.dll into the folder showed after where diesel command execution
I had the same error on Ubuntu and for me the following install fixed the issue:
sudo apt install libpq-dev
No need to move files around, just add C:\Program Files\PostgreSQL\14\lib and C:\Program Files\PostgreSQL\14\bin to your PATH. Installing and running diesel should have no problems.
Note: your paths may be different, and remember to close/reopen your terminal so the PATH variable is updated.
(Tested on Windows 10)
To give clear steps for windows:
Add C:\Users<username>.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib in the path in environment variables
Copy libpq.lib that is in C:\Program Files\PostgreSQL\14\lib (obviously this is with version 14) and paste it in C:\Users<username>.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib
If you've attempted to cargo build (or anything that runs the build scripts for libpq rust crate) when your environment was invalid, then you need to do a cargo clean after fixing your environment otherwise you'll still get the libpq.lib not found error even when it's in your PATH. The other answers where you copy the file into another directory are just hacks
You can instead add the path to .../lib to the compilers' library search paths, using RUSTFLAGS environment variable. It works both for installing diesel_cli and for building your projects.
RUSTFLAGS='-L /usr/local/pgsql/lib' cargo build
On Windows with EDB installer, the path contains a space, so use CARGO_ENCODED_RUSTFLAGS instead. For PowerShell:
$env:CARGO_ENCODED_RUSTFLAGS = "-L`u{1f}C:\Program Files\PostgreSQL\14\lib"

Docker: kafka confluent go client error

I am trying to use apache kafka with go, things look good when i execute the project with go run but when i use docker build i get error....
# pkg-config --cflags rdkafka
Package rdkafka was not found in the pkg-config search path.
Perhaps you should add the directory containing `rdkafka.pc'
to the PKG_CONFIG_PATH environment variable
No package 'rdkafka' found
pkg-config: exit status 1
I installed librdkafka from https://github.com/confluentinc/confluent-kafka-go
git clone https://github.com/edenhill/librdkafka.git
cd librdkafka
./configure --prefix /usr
make
sudo make install
I tried
PKG_CONFIG_PATH=/usr/lib/pkgconfig
source ~/.bashrc
but not luck. Any help is appreciated.
Probably you should include librdkafka.dll, msvcr120.dll and zlib.dll in your project root. At least this is what i should do to get this work on Windows. Not sure about Linux.
This below line inside the Dockerfile worked for me as this sets the environmental variable and this will persist when a container is run from the resulting image.
ENV PKG_CONFIG_PATH ${PKG_CONFIG_PATH}:/usr/lib/pkgconfig/

Error: version `GLIBCXX_3.4.21' not found

I am trying to compile matconvnet-1.0-beta20 with Matlab 2016a on Ubuntu 16.04. Initial phase of compilation works fine:
untar('http://www.vlfeat.org/matconvnet/download/matconvnet-1.0-beta20.tar.gz') ;
cd matconvnet-1.0-beta20
run matlab/vl_compilenn
The error happens when I run vl_simplenn(network, image) which gives following error:
Invalid MEX-file '/home/matconvnet-1.0-beta20/matlab/mex/vl_nnconv.mexa64':
/usr/local/MATLAB/R2016a/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6: version
`GLIBCXX_3.4.21' not found (required by /home/matconvnet-1.0-beta20/matlab/mex/vl_nnconv.mexa64)
To understand the cause of problem, I run /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBC which doesn't give any output bash: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: Permission denied
Also more /usr/lib/x86_64-linux-gnu/libstdc++.so.6 gives no output:
******** /usr/lib/x86_64-linux-gnu/libstdc++.so.6: Not a text file ********
I did some research and found some possible solutions:
http://it.mathworks.com/matlabcentral/newsreader/view_thread/162466
The problem is that MATLAB secretly changes LD_LIBRARY_PATH on startup
to point to the MATLAB version of GLIBC++, so that GLIBC++ 3.4.9 can
no longer be found. The solution is to modify matlab/bin/.matlab7rc.sh
so that "LDPATH_PREFIX" contains the path to the version of GLIB
installed with your compiler, then this is found before the
matlab-supplied library.
so I edited /usr/local/MATLAB/R2016a/bin/.matlab7rc.sh and modified LDPATH_PREFIX='' in 195th line to LDPATH_PREFIX='/usr/lib/x86_64-linux-gnu'.
After applying this change, the problem still exist.
As suggested here, I copied .matlab7rc.sh to current working directory of project, but still error persist.
https://askubuntu.com/questions/719028/version-glibcxx-3-4-21-not-found
According to first answer, running this command
ln -s /usr/lib/x86_64-linux-gnu/libstdc++.so.6 usr/local/MATLAB/R2014a/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6
gives an error:
ln: failed to create symbolic link 'usr/local/MATLAB/R2014a/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6': No such file or directory
Seems like second solution suggests changes of LD_PRELOAD path in .matlab7rc.sh, but it is not anywhere inside the file.
How to tell mex to link with the libstdc++.so.6 in /usr/lib instead of the one in the MATLAB directory?
From Matlab directory in /usr/local/MATLAB/R2016a/bin$ I run
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/x86_64-linux-gnu/libstdc++.so.6
but the problem still exist.
Maybe there I didn't apply the solution in the correct way Or maybe there is another solution elsewhere that I didn't find. Please let me know, I am very confused!!!
You need before execute (matlab in my case) add path of library:
In console execute this:
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libstdc++.so.6 matlab
I had the same problem.
In my case, to solve it, I first ran "locate" to list all the possible versions of the library in the system.
locate libstdc++
As an example, I report the result on my system
I then set the most recent version of "lib" by exporting the environment variable:
export LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21"
So, the fullpath of the library to be set depends on where it is allocated in your system.
There are 2 possible solutions:
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/x86_64-linux-gnu/libstdc++.so.6
Install this package:
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
MAYBE the second solution you mentioned really works, but you have done it before. So you cannot operate in the same way again because you have ever linked /usr/lib/x86_64-linux-gnu/libstdc++.so.6 to usr/local/MATLAB/R2014a/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6. TRY rebooting?
Also, you use MATLAB R2016a, but this command applies to R2014a. Was it that you ignore this point?

PL/R does not find shared library after install on postgres 9.2

I am trying to get PL/R running on a linux server where I do not have root access. The installation itself works fine using the command below:
LD_INCLUDE_PATH="$HOME/pgsql/include" LD_LIBRARY_PATH="$HOME/pgsql/lib:$HOME/lib/R/lib" PGDATA="$HOME/usr/pgsql/data" PG_LIB_DIR="$HOME/pgsql/lib" R_HOME="$HOME/lib/R" USE_PGXS=1 make
When I try to add the plr extension to a database with CREATE EXTENSION plr; however, I get the following error:
ERROR: could not load library "~/lib/postgresql/plr.so": libR.so: cannot open shared object file: No such file or directory
I read on the bottom of the install documentation page that I should add the library path to the LD config file /etc/ld.so.conf, but I do not have root access and I can not change this file.
Is there a workaround for this?
thanks in advance
You need to set LD_LIBRARY_PATH="$HOME/pgsql/lib:$HOME/lib/R/lib" at run-time in the PostgreSQL server's environment. Since you appear to be running PostgreSQL out of your home directory under your own user ID that should be as easy as exporting the environment variable before running pg_ctl, eg:
LD_LIBRARY_PATH="$HOME/pgsql/lib:$HOME/lib/R/lib" pg_ctl -D the_datadir start
Alternately you could see if you can re-compile PL/R with rpath linking enabled, so plr.so has a path to libR.so embedded in it by the linker at compile time. Pass the -rpath option in LDFLAGS or pass -Wl,-rpath in CFLAGS. See -rpath in man ld and -Wl in man gcc.

libgfortran: version `GFORTRAN_1.4' not found

I am getting the following error when I trying to a run mex file in MATLAB:
??? Invalid MEX-file
'findimps3.mexa64':
/MATLAB/bin/glnxa64/../../sys/os/glnxa64/libgfortran.so.3: version `GFORTRAN_1.4' not found (required by /usr/lib/libblas.so.3gf)
Any ideas how to solve this problem?
update:
I found out that "strings MATLAB/.../libgfortran.so.3 | grep GFORTRAN" output GFORTRAN_1.0. I tried to changed libgfortran inside MATLAB but it didn't work. Not I think it's better to find a suitable libblas that works with GFORTRAN_1.0.
read this link, it explains how to configure matlab on some linux systems.
here the steps that are relevant to you:
To enable running external programs, […] fortran libraries need to be properly updated and linked. Look at the output of this command:
ll "$MATLABDIR/bin/glnxa64/"
It is likely that [this link] exist:
libgfortran.so.3 -> libgfortran.so.3.0.0
Search for [this library] on your machine:
locate libgfortran.so
[…] Update Matlab's links to point to these newer versions:
sudo ln -sf [location of libgfortran.so.3.0.0] "$MATLABDIR/bin/glnxa64/libgfortran.so.3"
I (think I) fixed this problem by running matlab with LD_PRELOAD, like this
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libfreetype.so:/usr/lib/x86_64-linux-gnu/libgfortran.so.3 matlab
Notice freetype was another library I was having a similar problem with.
In my case the following command worked:
sudo ln -sf /usr/lib/gcc/i686-linux-gnu/4.7/libgfortran.so /usr/local/MATLAB/R2012a/sys/os/glnx86/libgfortran.so.3
Matlab was complaining it couldn't find the GFORTRAN1.4 in the following location:
/usr/lib/gcc/i686-linux-gnu/4.7/libgfortran.so
So I linked this location to the library I had :
/usr/local/MATLAB/R2012a/sys/os/glnx86/libgfortran.so.3
I found the location of this library by using the locate command as given above:) Thanks for the help:)
In my case, fixed by
$ ln -sf /usr/lib64/libgfortran.so.3.0.0 /opt/matlab/sys/os/glnxa64/libgfortran.so.3
Errors I meet when using CDSP:
csdp: /opt/matlab/sys/os/glnxa64/libgfortran.so.3: version GFORTRAN_1.4' not found (required by /usr/lib64/atlas/libptf77blas.so.3)
csdp: /opt/matlab/sys/os/glnxa64/libgfortran.so.3: versionGFORTRAN_1.4' not found (required by /usr/lib64/atlas/libf77blas.so.3)
I just ran into the same problem (error usr/lib64/libgfortran.so.3: version `gfortran_1.4' not found) and it was actually not hard to fix. The problem seems to be that gfortran_1.4 version of libgfortran.so.3 comes from the release gcc-4.6.2 (i.e. fortran 4.6).
What I did was downloaded gcc-4.6.2 and built, using the steps: tar -xvf gcc-4.6.2.tar.gz cd gcc-4.6.2 ./contrib/download_prerequisites cd .. mkdir objdir cd objdir $PWD/../gcc-4.6.2/configure --prefix=$HOME/gcc-4.6.2 --enable-languages=c,fortran,c++,go make make install
Then, once everything was made, I went to the directory where the new, fresh libgfortran.so.3 was sitting (in my case it was /home/testuser/objdir/x86_64-unknown-linux-gnu/32/libgfortran/.libs/)
I copied this version of libgfortran.so.3, and went to the directory where my program was expecting to find libgfortran.so.3. I replaced the old one (the old libgfortran.so.3) with the new one (the one we just copied).
The problem instantly went away. I hope this helps you too!