Could you point to me where I can get ACML 4.3 libraries?
You can download the ACML SDK package from the AMD website. However, the new version is 6.1 and it's recommended to be used instead of an obsolete version. Access the page to download the version 4.3 as well as others up to 6.1.
Official website of the SDK libraries: http://developer.amd.com/tools-and-sdks/cpu-development/amd-core-math-library-acml/