gcc -Wl,--gc-sections -o build/sambamba build/sambamba.o -Lhtslib -Llz4/lib -Wl,-Bstatic -lhts -llz4 -Wl,-Bdynamic -l:libphobos2-ldc.a -l:libdruntime-ldc.a -lrt -lpthread -lm
build/sambamba.o: In function `_D6undead6stream6Stream16doFormatCallbackMFwZv':
/no_backup_isis/rg/epalumbo/tmp/bamsort-test/sambamba/undeaD/src/undead/stream.d:1217: undefined reference to `_D6undead3utf6toUTF8FNaNbNiNfNkJG4awZAa'
collect2: error: ld returned 1 exit status
make: *** [sambamba-ldmd2-64] Error 1
immutable LDC_VERSION_STRING = "1.7.0";
immutable BOOTSTRAP_VERSION_STRING = "LDC - the LLVM D compiler (1.7.0)";
immutable DMD_VERSION_STRING = "v2.077.1";
immutable LLVM_VERSION_STRING = "5.0.1";