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>

 2011-03-01  Aurelien Jarno  <aurelien@aurel32.net>

 	* sysdeps/alpha/fpu/feupdateenv.c (feupdateenv): Add

 	libm_hidden_def.

 	* sysdeps/alpha/fpu/ftestexcept.c (fetestexcept): Likewise.

 diff --git glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/feupdateenv.c glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/feupdateenv.c

 index c798070..9abbf11 100644

 --- glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/feupdateenv.c

 +++ glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/feupdateenv.c

 @@ -46,4 +46,5 @@ strong_alias (__feupdateenv, __old_feupdateenv)

  compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);

  #endif

 +libm_hidden_ver (__feupdateenv, feupdateenv)

  versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);

 diff --git glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/ftestexcept.c glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/ftestexcept.c

 index a4b3081..34d8113 100644

 --- glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/ftestexcept.c

 +++ glibc-2.13/glibc-ports-2.13/sysdeps/alpha/fpu/ftestexcept.c

 @@ -30,3 +30,4 @@ fetestexcept (int excepts)

    return tmp & excepts & SWCR_STATUS_MASK;

  }

 +libm_hidden_def (fetestexcept)