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Unidata / LDM

The Unidata Local Data Manager (LDM) system includes network client and server programs designed for event-driven data distribution, and is the fundamental component of the Unidata Internet Data Distribution (IDD) system.
http://www.unidata.ucar.edu/software/ldm
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LDM configure should check for presence of `dc`, needed for scour to work #55

Closed akrherz closed 8 years ago

akrherz commented 8 years ago

Perhaps the scour utility is not considered intrinsic to the installation of LDM, but it would be nice if configure reported an error when the dc program is not found in the current $PATH. On a base install of RHEL7, the bc RPM is not installed :(

semmerson commented 8 years ago

The scour(1) utility is a supported one in the LDM package.

Operating systems that claim X/Open compliance are required to have the bc(1) utility. I'm saddened (but not all that surprised) that RHEL-7 doesn't.

A fix will be in the next release (after 6.13.5). In the meantime, you can replace these lines in the file $LDMHOME/src/scour/scour.in:

sed 's/\([0-9]*\) \([0-9]*\).*/b=\1;a=\2;d=0;if(a<b)d=b-a;d/'|\
 bc`

with this line:

awk '{diff=$1-$2; print (diff < 0) ? 0 : diff;}'`

Then, execute the command make install in the directory that contains the file to install the modified scour(1) script.

Thanks for sending this in.