Use LLVM OStream wrapper instead of <iostream> in the logger. llvm::OStream provides all std::ostream functionality (by holding a std::ostream* internally), but * doesn't include <iostream>, avoiding per-file overhead. * allows the stream pointer to be null, and the (inlined) operators do nothing when that's the case. (This also allows removal of the ofstream("/dev/null") hack Logger used when disabled, which presumably wasn't very portable)

#!/bin/sh
export PATH=$PATH:/opt/llvm/bin
export FILE=$1; shift
export LDC_PATH=~/ldc
PARAM=$(for p_file in $($LDC_PATH/bin/ldc $FILE -I~/ldc/lphobos -c -v -of/dev/null |grep import \
        |sed -e "s/import *//" -e "s/\t.*//" \
        |sed -e "s/\./\//g" -e "s/$/\.d/"); do if [ -f $p_file ]; then echo $p_file; fi; done)
echo ldc $FILE $@ $PARAM
$LDC_PATH/bin/ldc $FILE $@ $PARAM