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config/libc.in
author Oron Peled <oron@actcom.co.il>
Mon Aug 03 00:49:25 2009 +0200 (2009-08-03)
changeset 1449 8ad2773e7ae3
parent 1178 41a84f7d3b4f
child 1371 802c132f1f71
permissions -rw-r--r--
[complib:mpfr] Fix building MPFR in some weird cases

The tmul test uses a compiled-in input file in $(srcdir).
The problem is that the Makefile passes it unquoted. The C code
tries to stringify it using clever macros, which may *usually* work.

In my case the source directory was named:
.../toolchain-powerpc-e500v2-linux-gnuspe-1.0-2.fc10/.../tests
And guess what? During testing I found out the program fails because
it tries to open:
.../toolchain-powerpc-e500v2-1-gnuspe-1.0-2.fc10/.../tests

Yes, CPP tokenized the macro before stringifying it and not surprisingly
the 'linux' part was converted to 1.
[on Fedora-10: cpp (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)]

So the attached patch simplify the macros and pass the path as string
from the Makefile. 
     1 # C library options

     2 

     3 config LIBC

     4     string

     5     default "none" if BARE_METAL

     6 

     7 menu "C-library"

     8 

     9 config LIBC_VERSION

    10     string

    11     help

    12       Enter the date of the snapshot you want to use in the form: YYYYMMDD

    13       where YYYY is the 4-digit year, MM the 2-digit month and DD the 2-digit

    14       day in the month.

    15       

    16       Please note:

    17       - glibc has snapshots done every monday, and only the last ten are kept.

    18       - uClibc has daily snapshots, and only the last 30-or-so are kept.

    19       

    20       So if you want to be able to re-build your toolchain later, you will

    21       have to save your C library tarball by yourself.

    22 

    23 source config.gen/libc.in

    24 

    25 comment "Common C library options"

    26 

    27 config LIBC_SUPPORT_NPTL

    28     bool

    29     default n

    30 

    31 config LIBC_SUPPORT_LINUXTHREADS

    32     bool

    33     default n

    34 

    35 config THREADS

    36     string

    37     default "nptl"          if THREADS_NPTL

    38     default "linuxthreads"  if THREADS_LINUXTHREADS

    39     default "none"          if THREADS_NONE

    40 

    41 choice

    42     bool

    43     prompt "Threading implementation to use:"

    44     default THREADS_NPTL           if LIBC_SUPPORT_NPTL

    45     default THREADS_LINUXTHREADS   if LIBC_SUPPORT_LINUXTHREADS && ! LIBC_SUPPORT_NPTL

    46     default THREADS_NONE           if ! LIBC_SUPPORT_LINUXTHREADS && ! LIBC_SUPPORT_NPTL

    47 

    48 config THREADS_NPTL

    49     bool

    50     prompt "nptl"

    51     depends on LIBC_SUPPORT_NPTL

    52 

    53 config THREADS_LINUXTHREADS

    54     bool

    55     prompt "linuxthreads"

    56     depends on LIBC_SUPPORT_LINUXTHREADS

    57 

    58 config THREADS_NONE

    59     bool

    60     prompt "none"

    61 

    62 endchoice

    63 

    64 endmenu
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