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 -durN gcc-4.4.5.orig/contrib/regression/objs-gcc.sh gcc-4.4.5/contrib/regression/objs-gcc.sh

--- gcc-4.4.5.orig/contrib/regression/objs-gcc.sh	2009-04-10 01:23:07.000000000 +0200

+++ gcc-4.4.5/contrib/regression/objs-gcc.sh	2010-10-09 23:10:32.000000000 +0200

@@ -106,6 +106,10 @@

  then

   make all-gdb all-dejagnu all-ld || exit 1

   make install-gdb install-dejagnu install-ld || exit 1

+elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]

+ then

+  make all-gdb all-dejagnu all-ld || exit 1

+  make install-gdb install-dejagnu install-ld || exit 1

 elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then

   make bootstrap || exit 1

   make install || exit 1

diff -durN gcc-4.4.5.orig/libjava/classpath/ltconfig gcc-4.4.5/libjava/classpath/ltconfig

--- gcc-4.4.5.orig/libjava/classpath/ltconfig	2007-06-04 01:18:43.000000000 +0200

+++ gcc-4.4.5/libjava/classpath/ltconfig	2010-10-09 23:10:32.000000000 +0200

@@ -603,7 +603,7 @@

 # Transform linux* to *-*-linux-gnu*, to support old configure scripts.

 case $host_os in

-linux-gnu*) ;;

+linux-gnu*|linux-uclibc*) ;;

 linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`

 esac

@@ -1251,7 +1251,7 @@

   ;;

 # This must be Linux ELF.

-linux-gnu*)

+linux*)

   version_type=linux

   need_lib_prefix=no

   need_version=no