scripts/Makefile.debug

   1 DEBUG_CFLAGS    :=
   2 DEBUG_RUSTFLAGS :=
   3
   4 debug-flags-y   := -g
   5
   6 ifdef CONFIG_DEBUG_INFO_SPLIT
   7 DEBUG_CFLAGS    += -gsplit-dwarf
   8 endif
   9
  10 debug-flags-$(CONFIG_DEBUG_INFO_DWARF4) += -gdwarf-4
  11 debug-flags-$(CONFIG_DEBUG_INFO_DWARF5) += -gdwarf-5
  12 ifeq ($(CONFIG_CC_IS_CLANG)$(CONFIG_AS_IS_GNU),yy)
  13 # Clang does not pass -g or -gdwarf-* option down to GAS.
  14 # Add -Wa, prefix to explicitly specify the flags.
  15 KBUILD_AFLAGS   += $(addprefix -Wa$(comma), $(debug-flags-y))
  16 endif
  17 DEBUG_CFLAGS    += $(debug-flags-y)
  18 KBUILD_AFLAGS   += $(debug-flags-y)
  19
  20 ifdef CONFIG_DEBUG_INFO_DWARF4
  21 DEBUG_RUSTFLAGS += -Zdwarf-version=4
  22 else ifdef CONFIG_DEBUG_INFO_DWARF5
  23 DEBUG_RUSTFLAGS += -Zdwarf-version=5
  24 endif
  25
  26 ifdef CONFIG_DEBUG_INFO_REDUCED
  27 DEBUG_CFLAGS    += -fno-var-tracking
  28 DEBUG_RUSTFLAGS += -Cdebuginfo=1
  29 ifdef CONFIG_CC_IS_GCC
  30 DEBUG_CFLAGS    += -femit-struct-debug-baseonly
  31 endif
  32 else
  33 DEBUG_RUSTFLAGS += -Cdebuginfo=2
  34 endif
  35
  36 ifdef CONFIG_DEBUG_INFO_COMPRESSED_ZLIB
  37 DEBUG_CFLAGS    += -gz=zlib
  38 DEBUG_RUSTFLAGS += -Zdebuginfo-compression=zlib
  39 KBUILD_AFLAGS   += -gz=zlib
  40 KBUILD_LDFLAGS  += --compress-debug-sections=zlib
  41 else ifdef CONFIG_DEBUG_INFO_COMPRESSED_ZSTD
  42 DEBUG_CFLAGS    += -gz=zstd
  43 DEBUG_RUSTFLAGS += -Zdebuginfo-compression=zstd
  44 KBUILD_AFLAGS   += -gz=zstd
  45 KBUILD_LDFLAGS  += --compress-debug-sections=zstd
  46 endif
  47
  48 KBUILD_CFLAGS   += $(DEBUG_CFLAGS)
  49 export DEBUG_CFLAGS
  50
  51 KBUILD_RUSTFLAGS += $(DEBUG_RUSTFLAGS)
  52 export DEBUG_RUSTFLAGS