RTL-SDR Support package installer failure on mac

I have a ML R2016a installed on my mac with the OS version 10.11.4. When I want to install CST SPKG for RTL-SDR (Communication System Toolbox Support Package for RTL-SDR), I encounter this error in the Support Package Installer window. Here is the error log:

Download Failed: sun.security.validator.ValidatorException: PKIS path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Please let me know why this error occurs while it did not happen before, and how I can resolve this stopping-work issue.

[Amir Tadayon]

Surprisingly, this error happens only when I want to install the support package for RTL-SDR. For example, I'm able to install SPKG for Arduino from internet.

[Daniel OMalley]

This appears to be a problem with the certificate of one of the dependencies, probably from the freedesktop.org site. I have the same problem.

Answer 1

[Amir Tadayon]

I found the problem. The JAVA version that MATLAB uses does not recognize the SSL certificate authority (CA) for the https://pkg-config.freedesktop.org website as a legitimate CA. However, I can download the pkg-config source code using a web browser (e.g. Safari). The following workaround let's me download and install the RTL-SDR support package successfully.

1. Go through all steps for installing the RTL-SDR support package until getting the error message mentioned.

2. In Documents/MATLAB/SupportPackages/R201xx/downloads/rtlsdrradio_download, a few xml files have been downloaded.

3. Find the file whose name starts with pkgconfig_version_maci64.xml. The file to be downloaded is specified between xml tags "downloadUrl" ... "/downloadUrl" in the xml file.

4. Download pkg-config manually using a web browser from https://pkg-config.freedesktop.org/releases/pkg-config-0.28.tar.gz.

5. Save .gz file in Documents/MATLAB/SupportPackages/R201xx/downloads/rtlsdrradio_download.

6. Redo step 1.

These steps should resolve the issue.

HTH

[Daniel OMalley]

This procedure worked perfectly. Thank you.