Mac Java Ld_library_path
Note: The java.library.path is initialized from the LDLIBRARYPATH environment variable. The loadLibrary method may be used when the directory containing the shared library is in java.library.path. To load 'libchilkat.so', call System.loadLibrary('chilkat'), as shown below. Jul 28, 2015 Where to Set Environment Variables in Mac OS X Jul 28, 2015 - 11 Comments At the command line, environmental variables are defined for the current shell and become inherited by any running command or process. To run Java, add the folder matlabroot/bin/ to your system environment variable. Is your computer architecture. For example, win64 for 64–bit Microsoft ® Windows ® machines, maci64 on macOS, or glnxa64 on Linux ®. Matlabroot is the value returned by the MATLAB ® matlabroot command.
I am using g++ 3.3 on os X 10.3.9. I have created my own library
using
ar ruv *.o files
After this I try to compile a test program using,
g++ -pg -O -Wno-deprecated -ansi -pedantic -o test test.C
-DANSI_HEADERS -D_G_HAVE_BOOL -I. -I/ALLINCLUDEDIRS -lmylib -llpsolve51
-lm -L.
And the compilation works fine.
But when i try to run the executable ./test, I get the following error
message:
dyld: ./test_grid can't open library: liblpsolve51.dylib (No such file
or directory, errno = 2)
Trace/BPT trap
The library liblpsolve.dylib is NOT located in the current directory. I tried checking the value of LD_LIBRARY_PATH using echo$LD_LIBRARY_PATH, but nothing showed up.
It seems that LD_LIBRARY_PATH is not set, and moreover I am not even sure if it is used on darwin? On posting to a newsgroup, I was told that I need DYLD_LIBRARY_PATH instead. On doing echo $DYLD_LIBRARY_PATH I do not see any paths. Isn't a default value set for them already?
How can I resolve this problem?
thanks,
amit.
(Linux/CentOS/Solaris)
How to Load a Java Native/Shared Library (.so)
There are several ways to make it possible for the Java runtime to find and load a native shared library (.so) at runtime. I will list them briefly here, followed by examples with more explanation below.
Windows Ld Library Path
- Call System.load to load the .so from an explicitly specified absolute path.
- Copy the shared library to one of the paths already listed in java.library.path
- Modify the LD_LIBRARY_PATH environment variable to include the directory where the shared library is located.
- Specify the java.library.path on the command line by using the -D option.
1. Call System.load to load the shared library from an explicitly specified absolute path.
This choice removes all uncertainty, but embeds a hard-coded path within your Java application. Example:
2. Copy the shared library to one of the paths already listed in java.library.path
To view the paths listed in java.library.path, run this Java code:
Note: The java.library.path is initialized from the LD_LIBRARY_PATH environment variable.
The loadLibrary method may be used when the directory containing the shared library is in java.library.path. To load 'libchilkat.so', call System.loadLibrary('chilkat'), as shown below.
3. Modify the LD_LIBRARY_PATH environment variable to include the path where the Chilkat shared library is located.
Mac Java Ld_library_path Windows 10
For Bourne Shell, K Shell or Bash, type:
For C Shell, type:
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4. Specify the java.library.path on the command line by using the -D option.
Mac Java Ld_library_path Update
For example: