scl_error_log(4scl)scl_error_log(4scl)NAMEscl_error_log - describes the Solaris Compatibility Library error log‐
The Solaris Compatibility Libraries for Tru64 UNIX will, as much as
possible, return the same error codes that are returned on Solaris,
even though there may be different errors occuring within the implemen‐
tation. In this case the actual error is mapped to the "best-fit" error
that the Solaris function can return.
In order to aid debugging, when an error within the implementation
occurs and is mapped to a different error code, SCL will write an entry
to the SCL error logfile that indicates which actual error occurred.
This error log can thus be used to aid application debugging or when
reporting problems with SCL.
Use of the SCL error log is enabled by defining the SCL_LOG_FILE envi‐
ronment variable to be the name of the file to which errors are writ‐
ten, or stdout or stderr. No messages will be output if SCL_LOG_FILE is
The content of the error log is similar to the following: 0.00008|0001:
SCL Logfile initialized 0.00016|0001: Failed to initialize aio routines
0.00016|0001: SCL Logfile being closed
The numbers prefixing the message represent the time since the log file
was initialized (in seconds) and the thread sequence number that is
logging the message.
The messages written to the log file are obtained from a message cata‐
log named scl_message.cat. This catalog resides in the lib/nls/msg
directory beneath the SCL root directory. There is no support for
In order to locate the message file, one of two mechanisms can be used:
If the LANG environment variable is defined when SCL is installed, a
link will be created in /usr/lib/nls/msg/$LANG to the catalog residing
beneath the SCL root directory. This directory is searched by default.
If LANG is not defined, or is different when applications using SCL
execute, then NLSPATH environment variable must be used to specify the
location of the catalog. Define or modify NLSPATH to reference the mes‐
sage directory beneath the SCL root directory. This can be achieved
with a command similar to the following:
# export NLSPATH=$NLSPATH:/usr/opt/solcomplib/lib/nls/msg/%N
If a process that has enabled use of SCL error log forks then error
logging is consequently disabled for the new process. It remains
enabled for the existing process.
Overviews: scl_intro(3scl), scl_rpc(3scl), scl_thread_intro(3scl)
Manual: Solaris Compatibility Library User's Guide