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config/arch/alpha.in.2
author Bryan Hundven <bryanhundven@gmail.com>
Sun Jun 26 03:26:54 2011 -0700 (2011-06-26)
changeset 2515 364b06df9e3a
parent 1716 6bbf206a5b57
permissions -rw-r--r--
glibc: Refactor startfiles/headers into do_libc_backend()

Refactor the contents of 'do_libc_start_files()' and 'do_libc()' into a
parameterized 'do_libc_backend()'. 'do_libc_start_files()' and 'do_libc()'
call 'do_libc_backend()' with either 'libc_mode=startfiles' or
'libc_mode=final' (respectively) so that the startfiles/headers and
the final libc builds are configured and built with the same options.

One example of where this is needed is when building a mips toolchain.
Previously, if you were building an n32 toolchain, you wouldn't have
noticed an issue, because if '-mabi' is not in CFLAGS, n32 is the
default:

http://sourceware.org/git/?p=glibc-ports.git;a=blob;f=sysdeps/mips/preconfigure;hb=HEAD

But when trying to build an o32 or n64 toolchain the build would
have failed. This is because (e)glibc expects "-mabi={o32,n32,n64}" to be
in CFLAGS, but was not previously provided in 'do_libc_start_files()'.
The build failure would happen in the shared-core gcc when it tries to
configure an n64 or o32 gcc with an n32 libc.

A simpler solution would have been to just add TARGET_CFLAGS to configure
in 'do_libc_start_files()', but this way makes configure and make
consistent for both steps.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> 
     1 # Alpha specific configuration file

     2 

     3 choice

     4     bool

     5     prompt "Variant"

     6 

     7 config ARCH_ALPHA_EV4

     8     bool

     9     prompt "EV4"

    10 

    11 config ARCH_ALPHA_EV45

    12     bool

    13     prompt "EV45"

    14 

    15 config ARCH_ALPHA_EV5

    16     bool

    17     prompt "EV5"

    18 

    19 config ARCH_ALPHA_EV56

    20     bool

    21     prompt "EV56"

    22 

    23 config ARCH_ALPHA_EV6

    24     bool

    25     prompt "EV6"

    26 

    27 config ARCH_ALPHA_EV67

    28     bool

    29     prompt "EV67"

    30 

    31 endchoice

    32 

    33 config ARCH_ALPHA_VARIANT

    34     string

    35     default "ev4"   if ARCH_ALPHA_EV4

    36     default "ev45"  if ARCH_ALPHA_EV45

    37     default "ev5"   if ARCH_ALPHA_EV5

    38     default "ev56"  if ARCH_ALPHA_EV56

    39     default "ev6"   if ARCH_ALPHA_EV6

    40     default "ev67"  if ARCH_ALPHA_EV67

    41 

    42 config ARCH_CPU

    43     default "ev4"   if ARCH_ALPHA_EV4

    44     default "ev45"  if ARCH_ALPHA_EV45

    45     default "ev5"   if ARCH_ALPHA_EV5

    46     default "ev56"  if ARCH_ALPHA_EV56

    47     default "ev6"   if ARCH_ALPHA_EV6

    48     default "ev67"  if ARCH_ALPHA_EV67

    49 

    50 config ARCH_TUNE

    51     default "ev4"   if ARCH_ALPHA_EV4

    52     default "ev45"  if ARCH_ALPHA_EV45

    53     default "ev5"   if ARCH_ALPHA_EV5

    54     default "ev56"  if ARCH_ALPHA_EV56

    55     default "ev6"   if ARCH_ALPHA_EV6

    56     default "ev67"  if ARCH_ALPHA_EV67
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