diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Kconfig | 15 | ||||
| -rw-r--r-- | arch/mips/Makefile | 23 |
2 files changed, 20 insertions, 18 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b09eee2281c5..492f581fe6ba 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1853,21 +1853,6 @@ source "fs/Kconfig.binfmt" config TRAD_SIGNALS bool -config BUILD_ELF64 - bool "Use 64-bit ELF format for building" - depends on 64BIT - help - A 64-bit kernel is usually built using the 64-bit ELF binary object - format as it's one that allows arbitrary 64-bit constructs. For - kernels that are loaded within the KSEG compatibility segments the - 32-bit ELF format can optionally be used resulting in a somewhat - smaller binary, but this option is not explicitly supported by the - toolchain and since binutils 2.14 it does not even work at all. - - Say Y to use the 64-bit format or N to use the 32-bit one. - - If unsure say Y. - config BINFMT_IRIX bool "Include IRIX binary compatibility" depends on CPU_BIG_ENDIAN && 32BIT && BROKEN diff --git a/arch/mips/Makefile b/arch/mips/Makefile index d5d5831b6e24..4337c492ed1b 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -60,9 +60,6 @@ vmlinux-32 = vmlinux.32 vmlinux-64 = vmlinux cflags-y += -mabi=64 -ifndef CONFIG_BUILD_ELF64 -cflags-y += $(call cc-option,-msym32) -endif endif all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) @@ -576,6 +573,26 @@ else JIFFIES = jiffies_64 endif +# +# Automatically detect the build format. By default we choose +# the elf format according to the load address. +# We can always force a build with a 64-bits symbol format by +# passing 'BUILD_ELF32=no' option to the make's command line. +# +ifdef CONFIG_64BIT + ifndef BUILD_ELF32 + ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) + BUILD_ELF32 = y + endif + endif + + ifeq ($(BUILD_ELF32), y) + cflags-y += -msym32 + else + cflags-y += -DCONFIG_BUILD_ELF64 + endif +endif + AFLAGS += $(cflags-y) CFLAGS += $(cflags-y) \ -D"VMLINUX_LOAD_ADDRESS=$(load-y)" |