[El Craigo]

Hi guys, hope you can help

Is it possible to use 2 versions of GLIBC on RedHat Enterprise 3? We use a product called Informix, but they only have a ports for RedHat E2. They have been telling us for months that there is going to be a port (Oracle had a port for RH E3 in October last year, but thats another story), but are yet to produce one. I would rather use RH E3 as it is the most current O/S, use and older GLIBC library for Informix, and then upgrade the version of Informix when they get their act together. I can install an older version of GLIBC, but am not sure how to make the "make" command use this version, and not the newer version.

[codejockey]

Typically, the makefile will either supply a pointer to the location of the libraries to be used or rely on the default for the compiler (most common). You can specify libraries/directories to be used/searched with the -B option to gcc; you should review the makefile and modify any options associated with the CC variable to add -B to the invocation. You'll have to look at each (highest-level) makefile to accomplish this, which will not be pretty. Alternatively, you can set the LD_LIBRARY_PATH environment variable to point to the location of the libraries you want to use for a specific compilation/build (consider setting up a separate ID for this purpose, to keep things organized).

Hope this helps.

[El Craigo]

thanks. I will give it a try