crosstool-ng: patches/glibc/ports-2.10.1/390-cross-compile-nptl.patch@a70abdbfa342

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 A little hack for cross-compiling NPTL

     3 http://sourceware.org/ml/libc-alpha/2005-02/msg00043.html

     5 diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/configure glibc-2.10.1/nptl/sysdeps/pthread/configure

     6 --- glibc-2.10.1.orig/nptl/sysdeps/pthread/configure	2009-05-17 14:19:31.000000000 +0200

     7 +++ glibc-2.10.1/nptl/sysdeps/pthread/configure	2009-11-13 00:50:43.000000000 +0100

     8 @@ -78,6 +78,10 @@

     9  fi

    10  { echo "$as_me:$LINENO: result: $libc_cv_forced_unwind" >&5

    11  echo "${ECHO_T}$libc_cv_forced_unwind" >&6; }

    12 +if test $libc_cv_forced_unwind = no -a $build_cpu != $host_cpu; then

    13 +  echo "$as_me:$LINENO: forcing libc_cv_forced_unwind = yes for cross-compile"

    14 +  libc_cv_forced_unwind=yes

    15 +fi

    16  if test $libc_cv_forced_unwind = yes; then

    17    cat >>confdefs.h <<\_ACEOF

    18  #define HAVE_FORCED_UNWIND 1

    19 @@ -141,6 +145,10 @@

    20  { echo "$as_me:$LINENO: result: $libc_cv_c_cleanup" >&5

    21  echo "${ECHO_T}$libc_cv_c_cleanup" >&6; }

    22    CFLAGS="$old_CFLAGS"

    23 +  if test $libc_cv_c_cleanup = no -a $build_cpu != $host_cpu; then

    24 +    echo "$as_me:$LINENO: result: forcing libc_cv_c_cleanup = yes for cross-compile"

    25 +    libc_cv_c_cleanup=yes

    26 +  fi

    27    if test $libc_cv_c_cleanup = no; then

    28      { { echo "$as_me:$LINENO: error: the compiler must support C cleanup handling" >&5

    29  echo "$as_me: error: the compiler must support C cleanup handling" >&2;}

    30 diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/configure.in glibc-2.10.1/nptl/sysdeps/pthread/configure.in

    31 --- glibc-2.10.1.orig/nptl/sysdeps/pthread/configure.in	2003-12-03 07:50:01.000000000 +0100

    32 +++ glibc-2.10.1/nptl/sysdeps/pthread/configure.in	2009-11-13 00:50:43.000000000 +0100

    33 @@ -28,6 +28,9 @@

    34  struct _Unwind_Context *context;

    35  _Unwind_GetCFA (context)],

    36  libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])

    37 +if test $libc_cv_forced_unwind = no -a $build_cpu != $host_cpu; then

    38 +  libc_cv_forced_unwind=yes

    39 +fi

    40  if test $libc_cv_forced_unwind = yes; then

    41    AC_DEFINE(HAVE_FORCED_UNWIND)

    42  dnl Check for C cleanup handling.

    43 @@ -41,6 +44,9 @@

    44    puts ("test")],

    45  libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])

    46    CFLAGS="$old_CFLAGS"

    47 +  if test $libc_cv_c_cleanup = no -a $build_cpu != $host_cpu; then

    48 +    libc_cv_c_cleanup=yes

    49 +  fi

    50    if test $libc_cv_c_cleanup = no; then

    51      AC_MSG_ERROR([the compiler must support C cleanup handling])

    52    fi

author	"Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
	Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854	a70abdbfa342
permissions	-rw-r--r--