Bug 1869 – prefer local build libraries to other build libraries

Bug 1869 - prefer local build libraries to other build libraries


Summary:	prefer local build libraries to other build libraries

Status:	RESOLVED FIXED

Product:	ns-3
Classification:	Unclassified
Component:	build system
Version:	pre-release
Hardware:	PC All

Importance:	P5 normal
Assigned To:	Gustavo J. A. M. Carneiro

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2014-03-02 12:17 UTC by Tom Henderson
Modified:	2014-03-13 09:55 UTC (History)
CC List:	1 user (show)

See Also:

Attachments
patch to fix (1.34 KB, patch) 2014-03-02 12:42 UTC, Tom Henderson	Details \| Diff
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Description Tom Henderson 2014-03-02 12:17:54 UTC

When using bake to build ns-3, I encountered some unexpected behavior in which I could not get the loader to use newly modified shared libraries that I had later built in the ns-3-dev directory.  Instead, it would always prefer the libraries found in the bake/build directory (built during the bake build step).  I had to move out of the way the ../../build directory to get it to use the local build directory.

The problem turned out to be the configuration environment variable NS3_MODULE_PATH, which appended bake build paths before the ns-3-dev/build path was appended.  These bake build paths are appended when waf recurses into the various ns-3 modules that rely on external libraries (brite, click, openflow, internet).  

Additionally, the various modules append duplicate paths to NS3_MODULE_PATH.

Comment 1 Tom Henderson 2014-03-02 12:42:18 UTC

Created attachment 1789 [details]
patch to fix

- append local build directory before recursing into src/ modules
- remove duplicate path entries

Comment 2 Tom Henderson 2014-03-13 09:55:41 UTC

pushed in changeset 10658:2a407999964e