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config/cc/gcc.in.mips
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Mon May 05 23:29:48 2014 +0200 (2014-05-05)
changeset 3299 1ff943ae14d7
permissions -rw-r--r--
cc: add options to differentiate the need for pass-1 and pass-2

In some cases, building the core pass-1 is unneeded, as the C library
will not try to build anything when installing headers, or sill not
install anything at all.

This is for example the case for newlib, wihch does not require a core
pass-1 since it builds nothing and installs no header.

This should also be the case for newer glibc-es with newer gcc-es,
which no longer require a core pass-1, since the circular dependency
glibc <-> gcc (about TLS?) has been resolved.

Reported-by: Trevor Woerner <trevor.woerner@linaro.org>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> 
     1 # MIPS specific options for gcc

     2 

     3 config CC_GCC_HAS_ARCH_OPTIONS

     4     default y

     5 

     6 config CC_GCC_mips_llsc

     7     tristate

     8     prompt "Use llsc"

     9     default m

    10     help

    11       This configures how gcc will emit load-link, store-conditional and

    12       sync opcodes. Normally, you'd set this to 'M', and configure will do

    13       the correct thing (ie. enable llsc for Linux-based targets, disable

    14       for others). If you know better, you can force either using llsc or

    15       not using it (resp. 'Y' or 'N').

    16 

    17 config CC_GCC_mips_synci

    18     tristate

    19     prompt "Use synci"

    20     default m

    21     help

    22       This configures how gcc will emit the synci opcode. Normally, you'd

    23       set this to 'M', and configure will do the correct thing (ie. disable).

    24       If you know better, you can force using synci (say 'Y'), or not using

    25       it (say 'N').

    26 

    27 config CC_GCC_mips_plt

    28     bool

    29     prompt "Use copy relocations & PLTs"

    30     help

    31       This configures gcc to use copy relocations & PLTs. These are

    32       extensions to the traditional SVR4-based MIPS ABIs and require

    33       support from GNU binutils and the runtime C library.

    34       Say 'N' to keep the default and not use them, say 'Y' to use them.
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