Some warnings that can be solved: the "warning: conversion to [...] may alter its value [-Wconversion]" warnings that are seen e.g. when executing
cmake ../krusader -DCMAKE_INSTALL_PREFIX=/usr/ -DCMAKE_C_FLAGS:STRING="-O2 -fPIC" -DCMAKE_CXX_FLAGS:STRING="-O2 -fPIC -Wconversion" make