config/cc/gcc.in.mips
author Daniel Price <daniel.price@gmail.com>
Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126 333d3e40cbd1
permissions -rw-r--r--
scripts: refine static linking check to better guide the user

The current mechanism to check if static linking is possible, and the mesage
displayed on failure, can be puzzling to the unsuspecting user.

Also, the current implementation is not using the existing infrastructure,
and is thus difficult to enhance with new tests.

So, switch to using the standard CT_DoExecLog infra, and use four tests to
check for the host compiler:
- check we can run it
- check it can build a trivial program
- check it can statically link that program
- check if it statically link with libstdc++

That should cover most of the problems. Hopefully.

(At the same time, fix a typo in a comment)

Signed-off-by: Daniel Price <daniel.price@gmail.com>
[yann.morin.1998@free.fr: split original patch for self-contained changes]
[yann.morin.1998@free.fr: use steps to better see gcc's output]
[yann.morin.1998@free.fr: commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <163f86b5216fc08c672a.1353459722@nipigon.dssd.com>
Patchwork-Id: 200536
     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.