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>

diff -Naurd mpfr-2.4.1-a/tests/tfprintf.c mpfr-2.4.1-b/tests/tfprintf.c

--- mpfr-2.4.1-a/tests/tfprintf.c	2009-02-20 09:43:15.000000000 +0000

+++ mpfr-2.4.1-b/tests/tfprintf.c	2009-03-10 01:12:45.000000000 +0000

@@ -195,7 +195,7 @@

   check_vfprintf (fout, "a. %Pu, b. %c, c. %Zi%Zn", prec, ch, mpz, &mpz);

   check_length_with_cmp (6, mpz, 17, mpz_cmp_ui (mpz, 17), Zi);

   check_vfprintf (fout, "%% a. %#.0RNg, b. %Qx%Rn, c. %p", mpfr, mpq, &mpfr,

-                  &i);

+                  (void *) &i);

   check_length_with_cmp (7, mpfr, 16, mpfr_cmp_ui (mpfr, 16), Rg);

 #ifndef NPRINTF_T

diff -Naurd mpfr-2.4.1-a/tests/tprintf.c mpfr-2.4.1-b/tests/tprintf.c

--- mpfr-2.4.1-a/tests/tprintf.c	2009-02-20 09:43:15.000000000 +0000

+++ mpfr-2.4.1-b/tests/tprintf.c	2009-03-10 01:12:45.000000000 +0000

@@ -191,7 +191,8 @@

   check_length (5, sz, 34, zu);

   check_vprintf ("a. %Pu, b. %c, c. %RUG, d. %Zi%Zn", prec, ch, mpfr, mpz, &mpz);

   check_length_with_cmp (6, mpz, 24, mpz_cmp_ui (mpz, 24), Zi);

-  check_vprintf ("%% a. %#.0RNg, b. %Qx%Rn c. %p", mpfr, mpq, &mpfr, &i);

+  check_vprintf ("%% a. %#.0RNg, b. %Qx%Rn c. %p",

+                 mpfr, mpq, &mpfr, (void *) &i);

   check_length_with_cmp (7, mpfr, 16, mpfr_cmp_ui (mpfr, 16), Rg);

 #ifndef NPRINTF_T