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config/libc/newlib.in.2
author Daniel Price <daniel.price@gmail.com>
Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126 333d3e40cbd1
parent 2781 504b0759c149
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 # newlib second-part options

     2 

     3 config LIBC_NEWLIB_IO_C99FMT

     4     bool

     5     prompt "Enable IOs on C99 formats"

     6     help

     7       Enable support for IOs on C99 formats.

     8 

     9 config LIBC_NEWLIB_IO_LL

    10     bool

    11     prompt "Enable IOs on long long"

    12     help

    13       Enable support for IOs on long long integers.

    14 

    15 config LIBC_NEWLIB_IO_FLOAT

    16     bool

    17     prompt "Enable IOs on floats and doubles"

    18     help

    19       Enable support for IOs on floating point

    20       values (float and double).

    21 

    22 config LIBC_NEWLIB_IO_LDBL

    23     bool

    24     prompt "Enable IOs on long doubles"

    25     depends on LIBC_NEWLIB_IO_FLOAT

    26     help

    27       Enable support for IOs on long doubles.

    28 

    29 config LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS

    30     bool

    31     prompt "Disable the syscalls supplied with newlib"

    32     help

    33       Disable the syscalls that come with newlib. You

    34 	  will have to implement your own _sbrk, _read,

    35 	  _write... If you plan to port newlib to a new

    36 	  platform/board, say Yes.

    37 

    38 config LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE

    39     bool

    40     prompt "Optimize newlib for size"

    41     default y

    42     help

    43       Pass --enable-target-optspace to newlib configure.

    44       

    45       This will compile newlib with -Os.

    46 

    47 config LIBC_NEWLIB_EXTRA_CONFIG_ARRAY

    48     string

    49     prompt "Extra config for newlib"

    50     default ""

    51     help

    52       Extra flags to pass onto ./configure when configuring the newlib.
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