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config/companion_libs/mpc.in
author "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854 a70abdbfa342
parent 1985 f04a1f18c2bb
child 2957 3e2f2100a76d
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 # MPC options

     2 

     3 choice

     4     bool

     5     prompt "MPC version"

     6 # Don't remove next line

     7 # CT_INSERT_VERSION_BELOW

     8 

     9 config MPC_V_0_9

    10     bool

    11     prompt "0.9 (EXPERIMENTAL)"

    12     depends on EXPERIMENTAL

    13 

    14 config MPC_V_0_8_2

    15     bool

    16     prompt "0.8.2 (EXPERIMENTAL)"

    17     depends on EXPERIMENTAL

    18 

    19 config MPC_V_0_8_1

    20     bool

    21     prompt "0.8.1"

    22 

    23 config MPC_V_0_7

    24     bool

    25     prompt "0.7"

    26 

    27 config MPC_V_0_6

    28     bool

    29     prompt "0.6 (OBSOLETE)"

    30     depends on OBSOLETE

    31 

    32 endchoice

    33 

    34 config MPC_VERSION

    35     string

    36 # Don't remove next line

    37 # CT_INSERT_VERSION_STRING_BELOW

    38     default "0.9" if MPC_V_0_9

    39     default "0.8.2" if MPC_V_0_8_2

    40     default "0.8.1" if MPC_V_0_8_1

    41     default "0.7" if MPC_V_0_7

    42     default "0.6" if MPC_V_0_6
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