Fix QNX compiler references

ferrocene/ci/configure.sh

@@ -142,12 +142,14 @@ add --release-description="Ferrocene by Ferrous Systems"
 #
 # Assumes `qnxsdp-env.sh` has been sourced or the binaries are otherwise
 # already on path
-add --set target.aarch64-unknown-nto-qnx710.cc=aarch64-unknown-nto-qnx7.1.0-gcc
-add --set target.aarch64-unknown-nto-qnx710.cxx=aarch64-unknown-nto-qnx7.1.0-g++
-add --set target.aarch64-unknown-nto-qnx710.ar=aarch64-unknown-nto-qnx7.1.0-ar
-add --set target.x86_64-pc-nto-qnx710.cc=x86_64-pc-nto-qnx7.1.0-gcc
-add --set target.x86_64-pc-nto-qnx710.cxx=x86_64-pc-nto-qnx7.1.0-g++
-add --set target.x86_64-pc-nto-qnx710.ar=x86_64-pc-nto-qnx7.1.0-ar
+add --set target.aarch64-unknown-nto-qnx710.cc=qcc
+add --set target.aarch64-unknown-nto-qnx710.cxx=q++
+# `qar` is searched for, but doesn't exist, so override it.
+add --set target.aarch64-unknown-nto-qnx710.ar=ar
+add --set target.x86_64-pc-nto-qnx710.cc=qcc
+add --set target.x86_64-pc-nto-qnx710.cxx=q++
+# `qar` is searched for, but doesn't exist, so override it.
+add --set target.x86_64-pc-nto-qnx710.ar=ar
 
 # Set the host platform to build. The environment variable is set from the CI
 # configuration (see the .circleci directory).