3.5 Building Applications with the DECthreads Archive Library on DIGITAL UNIX Versions 4.0 and Above

DIGITAL recommends that you use the kf77 -fkapargs='- conc' DIGITAL UNIX linker switch default -call_ shared which causes an image to be linked with the DECthreads shared library libpthread.so . The shared library default eliminates the need for you to rebuild images each time a new version of DIGITAL UNIX is released. However, in the case where you want to link the image to the DECthreads archive library libpthread.a , use the -non_shared switch and the following procedure:

DIGITAL UNIX Versions 4.0B and above:
You should have installed the CMPDEVENH subset (Development Enhancements for DIGITAL UNIX) from the DIGITAL UNIX 4.0B and above operating system CD-ROM. The DECthreads archive library is at the following location:
```
/usr/opt/alt/user/lib/threads/libpthread.a
```
To link to libpthread.a when you are building a parallel program, use the following command:
```
kf77 -fkapargs='-conc' -non_shared \
/usr/opt/alt/usr/lib/threads/libpthread.a myprog.f
```

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