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patches/dmalloc/5.5.2/160-strdup_macro.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
parent 569 147a29d2e81f
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 --- dmalloc-5.5.2.orig/configure	2008-06-17 13:10:09.000000000 +0200

     2 +++ dmalloc-5.5.2/configure	2008-06-17 13:11:25.000000000 +0200

     3 @@ -4691,8 +4691,35 @@

     4  echo "$as_me:$LINENO: checking strdup macro" >&5

     5  echo $ECHO_N "checking strdup macro... $ECHO_C" >&6

     6  if test "$cross_compiling" = yes; then

     7 -  ac_cv_strdup_macro=no

     8 +  cat >conftest.$ac_ext <<_ACEOF

     9 +/* confdefs.h */

    10 +_ACEOF

    11 +cat confdefs.h >>conftest.$ac_ext

    12 +cat >>conftest.$ac_ext <<_ACEOF

    13 +/* end confdefs.h.  */

    14 +

    15 +#if HAVE_STDLIB_H

    16 +#  include <string.h>

    17 +#endif

    18 +

    19 +#ifndef strdup

    20 +       choke me

    21 +#endif

    22  

    23 +main() { exit(0); }

    24 +

    25 +_ACEOF

    26 +rm -f conftest.o conftest.obj

    27 +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5

    28 +  (eval $ac_compile) 2>&5

    29 +  ac_status=$?

    30 +  echo "$as_me:$LINENO: \$? = $ac_status" >&5

    31 +  (exit $ac_status); }; then

    32 +  ac_cv_strdup_macro=yes

    33 +else

    34 +  ac_cv_strdup_macro=no

    35 +fi

    36 +  

    37  else

    38    cat >conftest.$ac_ext <<_ACEOF

    39  /* confdefs.h.  */
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