[RFC] Kill CONFIG_BUILD_ELF64 from Kconfig

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Hi,

This patchset results from the following thread we had a couple weeks
ago:

http://marc.theaimsgroup.com/?l=linux-mips&m=117000798317188&w=2

Once this patchset is applied, we do not need to configure
CONFIG_BUILD_ELF64 manually. Instead, the makefile should do the right
thing for us:

    - It passes '-msym32' switch to gcc according to the platform's
      load address.

    - We can still force Kbuild to not use '-msym32' whatever the
      value of the load address by passing "BUILD_ELF32=no" when
      invoking make.

Patch #3 renames CONFIG_BUILD_ELF64 into CONFIG_64BIT_BUILD_ELF32. It
simplifies the places where it's used.

This patchset assumes that the compiler will fail if it doesn't
support '-msym32' switch. Therefore we needn't to test gcc's version
when testing CONFIG_64BIT_BUILD_ELF32 value.

Please, consider.

		Franck

---
 arch/mips/Kconfig             |   15 ---------------
 arch/mips/Makefile            |   23 ++++++++++++++++++-----
 include/asm-mips/page.h       |    2 +-
 include/asm-mips/pgtable-64.h |    2 +-
 include/asm-mips/stackframe.h |   12 ++++++------
 5 files changed, 26 insertions(+), 28 deletions(-)







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