crosstool-ng: patches/dmalloc/5.5.2/160-strdup

scripts: refine static linking check to better guide the user

The current mechanism to check if static linking is possible, and the mesage
displayed on failure, can be puzzling to the unsuspecting user.

Also, the current implementation is not using the existing infrastructure,
and is thus difficult to enhance with new tests.

So, switch to using the standard CT_DoExecLog infra, and use four tests to
check for the host compiler:
- check we can run it
- check it can build a trivial program
- check it can statically link that program
- check if it statically link with libstdc++

That should cover most of the problems. Hopefully.

(At the same time, fix a typo in a comment)

Signed-off-by: Daniel Price <daniel.price@gmail.com>
[yann.morin.1998@free.fr: split original patch for self-contained changes]
[yann.morin.1998@free.fr: use steps to better see gcc's output]
[yann.morin.1998@free.fr: commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <163f86b5216fc08c672a.1353459722@nipigon.dssd.com>
Patchwork-Id: 200536

     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

    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.  */

author	Daniel Price <daniel.price@gmail.com>
	Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126	333d3e40cbd1
parent 569	147a29d2e81f
permissions	-rw-r--r--