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config/arch/mips.in.2
author "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854 a70abdbfa342
permissions -rw-r--r--
complibs/cloog: fix linking with libm

In Ubuntu 11.04 and 11.10, the default options for ld have changed.
--no-copy-dt-needed-entries and --as-needed are now enabled by default, which
causes errors like:

[EXTRA] Checking CLooG/ppl
[DEBUG] ==> Executing: 'make' '-j3' '-s' 'check'
[ALL ] Making check in .
[ALL ] config.status: creating include/cloog/cloog-config.h
[ALL ] config.status: include/cloog/cloog-config.h is unchanged
[ALL ] libtool: link: i686-build_pc-linux-gnu-gcc -Wall -fomit-frame-pointer
-pipe -o cloog cloog.o -L/<snip>/build/static/lib ./.libs/libcloog.a -lm
/<snip>/build/static/lib/libppl_c.a /<snip>/build/static/lib/libpwl.a
/<snip>/build/static/lib/libppl.a /<snip>/build/static/lib/libgmpxx.a
/<snip>/build/static/lib/libgmp.a -lstdc++
[ALL ] /usr/bin/ld: /<snip>/build/static/lib/libppl.a(MIP_Problem.o):
undefined reference to symbol 'sqrt@@GLIBC_2.0'
[ALL ] /usr/bin/ld: note: 'sqrt@@GLIBC_2.0' is defined in DSO
/usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so so try adding
it to the linker command line
[ALL ] /usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so:
could not read symbols: Invalid operation
[ALL ] collect2: ld returned 1 exit status
[ERROR] make[2]: *** [cloog] Error 1
[ERROR] make[1]: *** [check-recursive] Error 1

See:
https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition

This patch fixes these errors by placing '-lm' at the right place on the command
line as libppl requires libm when linking cloog.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com> 
     1 # MIPS specific config options

     2 

     3 choice

     4     bool

     5     prompt "ABI"

     6 

     7 config ARCH_mips_o32

     8     bool

     9     prompt "o32"

    10     depends on ARCH_32

    11     help

    12       This is the -mabi=32 gcc option.

    13 

    14 config ARCH_mips_n32

    15     bool

    16     prompt "n32"

    17     depends on ARCH_64

    18     help

    19       This is the -mabi=n32 gcc option.

    20 

    21 config ARCH_mips_n64

    22     bool

    23     prompt "n64"

    24     depends on ARCH_64

    25     help

    26       This is the -mabi=64 gcc option.

    27 

    28 # Not supported on Linux:

    29 # o64   : seems related to *BSD

    30 # eabi  : seems related to bare-metal

    31 

    32 endchoice

    33 

    34 config ARCH_mips_ABI

    35     string

    36     default "32"    if ARCH_mips_o32

    37     default "n32"   if ARCH_mips_n32

    38     default "64"    if ARCH_mips_n64
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