Makefile: sla_test about presto

[chrisjwilliams]

I'm seeing this too (on ubuntu 9.10 and 10.10).
The library is created, but it's seems like it is not sync'ed to disk before the attempt to link the test code. Running make again does work, but this isn't a very good solution when you want to automate this process!

[cs150bf]

People without sudo/root might use a quick fix by just adding the lib path to the environment variable. Like adding an export line before slalib/sla_test, like

slalib: libsla$(LIBSUFFIX)
     cd slalib ; $(FC) -o sla_test sla_test.f -fno-second-underscore -L$(PRESTO)/lib -lsla
     export LD_LIBRARY_PATH=$(LD_LIBRARY_PATH):$(PRESTO)/lib &&  \
     slalib/sla_test

https://github.com/scottransom/presto/blob/master/src/Makefile#L130

[bretonr]

I concur with @cs150bf: one needs to add $PRESTO/lib to the LD_LIBRARY_PATH. You can do it by editing the Presto Makefile like @cs150bf suggested or -- this is what I do -- you can add it to your .bashrc:

export LD_LIBRARY_PATH=$(LD_LIBRARY_PATH):$(PRESTO)/lib

Note: if you want to run the Presto build using sudo, your user's environment variables won't follow when you do sudo make. Instead, you can try sudo -E make, which will attempt to preserve them. It might not work under your system though, depending how sudo is configured.