build/debug.mk

   1 DEBUG ?= y
   2
   3 ifeq ($(DEBUG),y)
   4 OPTIMIZE := -O0
   5 OPTIMIZE += -funit-at-a-time
   6 else
   7 OPTIMIZE := -Os -DNDEBUG -Wuninitialized
   8 endif
   9
  10 ifeq ($(CLANG),y)
  11   OPTIMIZE += -g
  12 else
  13 ifeq ($(HAVE_WIN32),y)
  14   # WINE works best with stabs debug symbols
  15   OPTIMIZE += -gstabs
  16 else
  17   OPTIMIZE += -g
  18 endif
  19 endif
  20
  21 # Enable fast floating point math.  XCSoar does not rely on strict
  22 # IEEE/ISO semantics, for example it is not interested in "errno" or
  23 # the difference between -0 and +0.  This allows using non-conforming
  24 # vector units on some platforms, e.g. ARM NEON.
  25 OPTIMIZE += -ffast-math
  26
  27 ifeq ($(CLANG)$(DEBUG),nn)
  28 # Enable gcc auto-vectorisation on some architectures (e.g. ARM NEON).
  29 # This requires -ffast-math, because some vector units don't conform
  30 # stricly with IEEE/ISO (see above).
  31 OPTIMIZE += -ftree-vectorize
  32
  33 OPTIMIZE += -funsafe-loop-optimizations
  34 endif
  35
  36 ifeq ($(LTO),y)
  37 OPTIMIZE += -flto -fwhole-program
  38
  39 # workaround for gcc 4.5.0 bug, see
  40 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43898
  41 OPTIMIZE := $(filter-out -ggdb -gstabs,$(OPTIMIZE))
  42 endif
  43
  44 ifeq ($(LLVM),y)
  45 # generate LLVM bitcode
  46 OPTIMIZE += -emit-llvm
  47 endif
  48
  49 ifeq ($(PROFILE),y)
  50 FLAGS_PROFILE := -pg
  51 else
  52 FLAGS_PROFILE :=
  53 endif