Things to do for a release of LDC:

• compile release LLVM
  • Unless this LLVM bug is fixed, make sure llvm-config doesn't have -lffi in $SYSTEM_LIBS. (Assuming ctfe doesn't use the JIT yet :P)
• set ldc_version in dmd/mars.c to "?.?.?" (remember to revert later)
• compile release LDC
  • CMAKE_BUILD_TYPE Release
  • EXTRA_LLVM_MODULES arm
  • USE_BOEHM_GC on (put libgc.a into project dir)
  • LIBCONFIG_LDFLAGS (path to libconfig++.a)
  • CMAKE_INSTALL_PREFIX (empty, so the config file is located in /etc)
• compile release runtime
  • D_FLAGS -w;-d;-O3;-release
• compile release tango

• run minitests
• run dstress
• run tango unittests