[PATCH 1 of 1] complibs/cloog: fix linking with libm

[BenoÃt ThÃbaudeau <benoit dot thebaudeau at advansee dot com>]

# HG changeset patch
# User "BenoÃt ThÃbaudeau" <benoit.thebaudeau@advansee.com>
# Date 1323806269 -3600
# Node ID 445b9783369e9cae789a0ce1504430b97d8f4637
# Parent  096845dbd877af023a2f52cfcd1e41f282266034
complibs/cloog: fix linking with libm

libppl requires libm when linking cloog, so place '-lm' at the right place on
the command line.

This fixes the following error:

[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

Signed-off-by: "BenoÃt ThÃbaudeau" <benoit.thebaudeau@advansee.com>

diff --git a/patches/cloog-ppl/0.15.11/100-add_on_libs_position.patch b/patches/cloog-ppl/0.15.11/100-add_on_libs_position.patch
new file mode 100644
--- /dev/null
+++ b/patches/cloog-ppl/0.15.11/100-add_on_libs_position.patch
@@ -0,0 +1,24 @@
+diff -Naurd cloog-ppl-0.15.11-a/configure cloog-ppl-0.15.11-b/configure
+--- cloog-ppl-0.15.11-a/configure	2011-04-01 06:22:53.000000000 +0200
++++ cloog-ppl-0.15.11-b/configure	2011-12-13 20:31:14.101586671 +0100
+@@ -11238,7 +11238,7 @@
+ fi
+ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ 
+-	LIBS="$LIBS -lppl_c -lppl -lgmpxx"
++	LIBS="-lppl_c -lppl -lgmpxx $LIBS"
+ 
+ $as_echo "#define CLOOG_PPL_BACKEND 1" >>confdefs.h
+ 
+diff -Naurd cloog-ppl-0.15.11-a/configure.in cloog-ppl-0.15.11-b/configure.in
+--- cloog-ppl-0.15.11-a/configure.in	2010-08-27 21:13:48.000000000 +0200
++++ cloog-ppl-0.15.11-b/configure.in	2011-12-13 20:30:59.885586623 +0100
+@@ -343,7 +343,7 @@
+ 	#endif
+ 	], [AC_MSG_RESULT([yes])], [AC_MSG_ERROR(Can't find correct version of PPL.) ])
+ 
+-	LIBS="$LIBS -lppl_c -lppl -lgmpxx"
++	LIBS="-lppl_c -lppl -lgmpxx $LIBS"
+ 	AC_DEFINE([CLOOG_PPL_BACKEND], 1, [Use the PPL backend])
+ 
+ else
diff --git a/scripts/build/companion_libs/cloog.sh b/scripts/build/companion_libs/cloog.sh
--- a/scripts/build/companion_libs/cloog.sh
+++ b/scripts/build/companion_libs/cloog.sh
@@ -45,7 +45,7 @@
 
     CT_DoExecLog CFG                            \
     CFLAGS="${CT_CFLAGS_FOR_HOST}"              \
-    LDFLAGS="-lm"                               \
+    LIBS="-lm"                                  \
     "${cloog_src_dir}/configure"                \
         --build=${CT_BUILD}                     \
         --host=${CT_HOST}                       \