The secret on my Linux to getting the qt wallet to not crash, was to follow the instructions in the build-cryptopp.md file which was included with the February 6 version of clients-master from the official github site.  Here it is in full, with double-spacing taken out:

Building Crypto++ on Linux
==========================
Install the dependencies
$ sudo apt-get install unzip

Set up the development folder by downloading the Crypto++ 5.6.2 source
$ mkdir cryptopp
$ cd cryptopp
$ wget http://www.cryptopp.com/cryptopp562.zip
$ unzip -a cryptopp562.zip

Uncomment the line "CXXFLAGS += -fPIC", by removing the preceeding #, inside GNUmakefile and build the library
$ make static dynamic test

Install it on your system
$ sudo make install

Troubleshooting:
----------------
If you have issues with an "Illegal instruction" error, as we experienced on one test machine, modify GNUmakefile and set the line "CXXFLAGS += -march=native" to "CXXFLAGS += "

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Worked for me.