Fix precomp build script
If ${ICMAKE_CPPSTD} macro is set, the build failed due to a minor issue in the g++ command.
Signed-off-by: vlefebvre valentin.lefebvre@suse.com
If ${ICMAKE_CPPSTD} macro is set, the build failed due to a minor issue in the g++ command.
Signed-off-by: vlefebvre valentin.lefebvre@suse.com