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Subject: bug#15276: libtool.mk incorrectly resolves lt_sysroot?
Resent-From: Hans =?UTF-8?Q?Beck=C3=A9rus?= <hans.beckerus@HIDDEN>
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I am having problem running a SDK cross-compilation toolchain built
through Yocto.
After some digging I discovered that the root cause of the problem is
the fact that the sysroot is incorrectly resolved if --with-sysroot is
not specified when running configure. Actually in Yocto --with-sysroot
is replaced by -with-libtool-sysroot but that is irrelevant in this
case. I believe the error is in libtool.mk. Specifically the following
piece of code:

# _LT_WITH_SYSROOT
# ----------------
AC_DEFUN([_LT_WITH_SYSROOT],
[AC_MSG_CHECKING([for sysroot])
AC_ARG_WITH([sysroot],
[  --with-sysroot[=DIR] Search for dependent libraries within DIR
                        (or the compiler's sysroot if not specified).],
[], [with_sysroot=no])

dnl lt_sysroot will always be passed unquoted.  We quote it here
dnl in case the user passed a directory name.
lt_sysroot=
case ${with_sysroot} in #(
 yes)
   if test "$GCC" = yes; then
     lt_sysroot=`$CC --print-sysroot 2>/dev/null`
   fi
   ;; #(
 /*)
   lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
   ;; #(
 no|'')
   ;; #(
 *)
   AC_MSG_RESULT([${with_sysroot}])
   AC_MSG_ERROR([The sysroot must be an absolute path.])
   ;;
esac

If --with-sysroot is *not* set it should be picked-up from the
compiler. But the switch statement above is wrong since the yes) and
no) cases are swapped.

Here is my configuration:

        host-triplet: arm-poky-linux-gnueabi
        shell: /bin/sh
        compiler: arm-poky-linux-gnueabi-gcc  -march=armv7-a
-mthumb-interwork -mfloat-abi=softfp -mtune=cortex-a9
--sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi
        compiler flags: -O2 -pipe -g -feliminate-unused-debug-types
        linker: arm-poky-linux-gnueabi-ld
--sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi
(gnu? yes)
        arm-poky-linux-gnueabi-libtool: (GNU libtool) 2.4.2
        automake: automake (GNU automake) 1.12.6
        autoconf: autoconf (GNU Autoconf) 2.69

Thanks.
Hans

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To: Hans =?UTF-8?Q?Beck=C3=A9rus?= <hans.beckerus@HIDDEN>
Subject: bug#15276: Acknowledgement (libtool.mk incorrectly resolves
 lt_sysroot?)
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Date: Thu, 05 Sep 2013 15:34:04 +0000

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Subject: bug#15276: libtool.mk incorrectly resolves lt_sysroot?
Resent-From: Hans =?UTF-8?Q?Beck=C3=A9rus?= <hans.beckerus@HIDDEN>
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Date: Thu, 5 Sep 2013 14:33:20 +0200
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Sorry for the typo in previous mail, libtool,mk should of course be
libtool.m4. Nothing else.

Thanks.
Hans

On Thu, Sep 5, 2013 at 2:19 PM, Hans Beck=E9rus <hans.beckerus@HIDDEN> w=
rote:
> I am having problem running a SDK cross-compilation toolchain built
> through Yocto.
> After some digging I discovered that the root cause of the problem is
> the fact that the sysroot is incorrectly resolved if --with-sysroot is
> not specified when running configure. Actually in Yocto --with-sysroot
> is replaced by -with-libtool-sysroot but that is irrelevant in this
> case. I believe the error is in libtool.mk. Specifically the following
> piece of code:
>
> # _LT_WITH_SYSROOT
> # ----------------
> AC_DEFUN([_LT_WITH_SYSROOT],
> [AC_MSG_CHECKING([for sysroot])
> AC_ARG_WITH([sysroot],
> [  --with-sysroot[=3DDIR] Search for dependent libraries within DIR
>                         (or the compiler's sysroot if not specified).],
> [], [with_sysroot=3Dno])
>
> dnl lt_sysroot will always be passed unquoted.  We quote it here
> dnl in case the user passed a directory name.
> lt_sysroot=3D
> case ${with_sysroot} in #(
>  yes)
>    if test "$GCC" =3D yes; then
>      lt_sysroot=3D`$CC --print-sysroot 2>/dev/null`
>    fi
>    ;; #(
>  /*)
>    lt_sysroot=3D`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
>    ;; #(
>  no|'')
>    ;; #(
>  *)
>    AC_MSG_RESULT([${with_sysroot}])
>    AC_MSG_ERROR([The sysroot must be an absolute path.])
>    ;;
> esac
>
> If --with-sysroot is *not* set it should be picked-up from the
> compiler. But the switch statement above is wrong since the yes) and
> no) cases are swapped.
>
> Here is my configuration:
>
>         host-triplet: arm-poky-linux-gnueabi
>         shell: /bin/sh
>         compiler: arm-poky-linux-gnueabi-gcc  -march=3Darmv7-a
> -mthumb-interwork -mfloat-abi=3Dsoftfp -mtune=3Dcortex-a9
> --sysroot=3D/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/c=
ortexa9-vfp-poky-linux-gnueabi
>         compiler flags: -O2 -pipe -g -feliminate-unused-debug-types
>         linker: arm-poky-linux-gnueabi-ld
> --sysroot=3D/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/c=
ortexa9-vfp-poky-linux-gnueabi
> (gnu? yes)
>         arm-poky-linux-gnueabi-libtool: (GNU libtool) 2.4.2
>         automake: automake (GNU automake) 1.12.6
>         autoconf: autoconf (GNU Autoconf) 2.69
>
> Thanks.
> Hans

Message sent to bug-libtool@HIDDEN:

Subject: bug#15276: libtool.m4 incorrectly resolves lt_sysroot?
Resent-From: Hans Beckerus <hans.beckerus@HIDDEN>
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Date: Thu, 05 Sep 2013 19:59:55 +0200
From: Hans Beckerus <hans.beckerus@HIDDEN>
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On 2013-09-05 2:33, Hans Beck�rus wrote:
> Sorry for the typo in previous mail, libtool,mk should of course be
> libtool.m4. Nothing else.
>
> Thanks.
> Hans
>
>
> On Thu, Sep 5, 2013 at 2:19 PM, Hans Beck�rus <hans.beckerus@HIDDEN> wrote:
>> I am having problem running a SDK cross-compilation toolchain built
>> through Yocto.
>> After some digging I discovered that the root cause of the problem is
>> the fact that the sysroot is incorrectly resolved if --with-sysroot is
>> not specified when running configure. Actually in Yocto --with-sysroot
>> is replaced by -with-libtool-sysroot but that is irrelevant in this
>> case. I believe the error is in libtool.mk. Specifically the following
>> piece of code:
>>
>> # _LT_WITH_SYSROOT
>> # ----------------
>> AC_DEFUN([_LT_WITH_SYSROOT],
>> [AC_MSG_CHECKING([for sysroot])
>> AC_ARG_WITH([sysroot],
>> [  --with-sysroot[=DIR] Search for dependent libraries within DIR
>>                          (or the compiler's sysroot if not specified).],
>> [], [with_sysroot=no])
>>
>> dnl lt_sysroot will always be passed unquoted.  We quote it here
>> dnl in case the user passed a directory name.
>> lt_sysroot=
>> case ${with_sysroot} in #(
>>   yes)
>>     if test "$GCC" = yes; then
>>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>>     fi
>>     ;; #(
>>   /*)
>>     lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
>>     ;; #(
>>   no|'')
>>     ;; #(
>>   *)
>>     AC_MSG_RESULT([${with_sysroot}])
>>     AC_MSG_ERROR([The sysroot must be an absolute path.])
>>     ;;
>> esac
>>
>> If --with-sysroot is *not* set it should be picked-up from the
>> compiler. But the switch statement above is wrong since the yes) and
>> no) cases are swapped.
>>
>> Here is my configuration:
>>
>>          host-triplet: arm-poky-linux-gnueabi
>>          shell: /bin/sh
>>          compiler: arm-poky-linux-gnueabi-gcc  -march=armv7-a
>> -mthumb-interwork -mfloat-abi=softfp -mtune=cortex-a9
>> --sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi
>>          compiler flags: -O2 -pipe -g -feliminate-unused-debug-types
>>          linker: arm-poky-linux-gnueabi-ld
>> --sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi
>> (gnu? yes)
>>          arm-poky-linux-gnueabi-libtool: (GNU libtool) 2.4.2
>>          automake: automake (GNU automake) 1.12.6
>>          autoconf: autoconf (GNU Autoconf) 2.69
>>
>> Thanks.
>> Hans
Here is a patch that corrects the problem. This patch has also been sent 
to Yocto for review.
Thanks.
Hans

--

diff -ur libtool-2.4.2.orig/configure libtool-2.4.2/configure
--- libtool-2.4.2.orig/configure 2013-09-05 10:37:50.982677000 +0200
+++ libtool-2.4.2/configure 2013-09-05 10:12:24.551681000 +0200
@@ -6814,7 +6814,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -6822,7 +6822,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/libltdl/configure libtool-2.4.2/libltdl/configure
--- libtool-2.4.2.orig/libltdl/configure 2013-09-05 10:37:24.738048000 +0200
+++ libtool-2.4.2/libltdl/configure 2013-09-05 10:38:44.540026000 +0200
@@ -6027,7 +6027,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -6035,7 +6035,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/libltdl/m4/libtool.m4
libtool-2.4.2/libltdl/m4/libtool.m4
--- libtool-2.4.2.orig/libltdl/m4/libtool.m4 2013-09-05 10:37:24.690013000 +0200
+++ libtool-2.4.2/libltdl/m4/libtool.m4 2013-09-05 12:05:51.560281000 +0200
@@ -1234,7 +1234,7 @@
  dnl in case the user passed a directory name.
  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -1242,7 +1242,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     AC_MSG_RESULT([${with_libtool_sysroot}])
diff -ur libtool-2.4.2.orig/tests/cdemo/configure
libtool-2.4.2/tests/cdemo/configure
--- libtool-2.4.2.orig/tests/cdemo/configure 2013-09-05 10:37:24.793021000 +0200
+++ libtool-2.4.2/tests/cdemo/configure 2013-09-05 10:39:01.039463000 +0200
@@ -5907,7 +5907,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5915,7 +5915,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/demo/configure
libtool-2.4.2/tests/demo/configure
--- libtool-2.4.2.orig/tests/demo/configure 2013-09-05 10:37:24.878048000 +0200
+++ libtool-2.4.2/tests/demo/configure 2013-09-05 10:39:15.357833000 +0200
@@ -5905,7 +5905,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5913,7 +5913,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/depdemo/configure
libtool-2.4.2/tests/depdemo/configure
--- libtool-2.4.2.orig/tests/depdemo/configure 2013-09-05
10:37:25.003086000 +0200
+++ libtool-2.4.2/tests/depdemo/configure 2013-09-05 10:39:33.424217000 +0200
@@ -5902,7 +5902,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5910,7 +5910,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/f77demo/configure
libtool-2.4.2/tests/f77demo/configure
--- libtool-2.4.2.orig/tests/f77demo/configure 2013-09-05
10:37:25.232029000 +0200
+++ libtool-2.4.2/tests/f77demo/configure 2013-09-05 12:02:54.749911000 +0200
@@ -6887,7 +6887,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -6895,7 +6895,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/fcdemo/configure
libtool-2.4.2/tests/fcdemo/configure
--- libtool-2.4.2.orig/tests/fcdemo/configure 2013-09-05
10:37:25.320032000 +0200
+++ libtool-2.4.2/tests/fcdemo/configure 2013-09-05 12:03:34.350859000 +0200
@@ -6986,7 +6986,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -6994,7 +6994,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/mdemo/configure
libtool-2.4.2/tests/mdemo/configure
--- libtool-2.4.2.orig/tests/mdemo/configure 2013-09-05 10:37:25.458028000 +0200
+++ libtool-2.4.2/tests/mdemo/configure 2013-09-05 12:04:04.233622000 +0200
@@ -5934,7 +5934,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5942,7 +5942,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/mdemo2/configure
libtool-2.4.2/tests/mdemo2/configure
--- libtool-2.4.2.orig/tests/mdemo2/configure 2013-09-05
10:37:25.564096000 +0200
+++ libtool-2.4.2/tests/mdemo2/configure 2013-09-05 12:04:36.688447000 +0200
@@ -5907,7 +5907,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5915,7 +5915,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/pdemo/configure
libtool-2.4.2/tests/pdemo/configure
--- libtool-2.4.2.orig/tests/pdemo/configure 2013-09-05 10:37:25.619085000 +0200
+++ libtool-2.4.2/tests/pdemo/configure 2013-09-05 12:04:50.578801000 +0200
@@ -5910,7 +5910,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -5918,7 +5918,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5
diff -ur libtool-2.4.2.orig/tests/tagdemo/configure
libtool-2.4.2/tests/tagdemo/configure
--- libtool-2.4.2.orig/tests/tagdemo/configure 2013-09-05
10:37:25.727040000 +0200
+++ libtool-2.4.2/tests/tagdemo/configure 2013-09-05 12:05:11.896353000 +0200
@@ -6926,7 +6926,7 @@

  lt_sysroot=
  case ${with_libtool_sysroot} in #(
- yes)
+ no)
     if test "$GCC" = yes; then
       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
     fi
@@ -6934,7 +6934,7 @@
   /*)
     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
     ;; #(
- no|'')
+ yes|'')
     ;; #(
   *)
     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
${with_libtool_sysroot}" >&5

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On 2013-09-05 7:59, Hans Beckerus wrote:
> On 2013-09-05 2:33, Hans Beck�rus wrote:
>> Sorry for the typo in previous mail, libtool,mk should of course be
>> libtool.m4. Nothing else.
>>
>> Thanks.
>> Hans
>>
>>
>> On Thu, Sep 5, 2013 at 2:19 PM, Hans Beck�rus 
>> <hans.beckerus@HIDDEN> wrote:
>>> I am having problem running a SDK cross-compilation toolchain built
>>> through Yocto.
>>> After some digging I discovered that the root cause of the problem is
>>> the fact that the sysroot is incorrectly resolved if --with-sysroot is
>>> not specified when running configure. Actually in Yocto --with-sysroot
>>> is replaced by -with-libtool-sysroot but that is irrelevant in this
>>> case. I believe the error is in libtool.mk. Specifically the following
>>> piece of code:
>>>
>>> # _LT_WITH_SYSROOT
>>> # ----------------
>>> AC_DEFUN([_LT_WITH_SYSROOT],
>>> [AC_MSG_CHECKING([for sysroot])
>>> AC_ARG_WITH([sysroot],
>>> [  --with-sysroot[=DIR] Search for dependent libraries within DIR
>>>                          (or the compiler's sysroot if not 
>>> specified).],
>>> [], [with_sysroot=no])
>>>
>>> dnl lt_sysroot will always be passed unquoted.  We quote it here
>>> dnl in case the user passed a directory name.
>>> lt_sysroot=
>>> case ${with_sysroot} in #(
>>>   yes)
>>>     if test "$GCC" = yes; then
>>>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>>>     fi
>>>     ;; #(
>>>   /*)
>>>     lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
>>>     ;; #(
>>>   no|'')
>>>     ;; #(
>>>   *)
>>>     AC_MSG_RESULT([${with_sysroot}])
>>>     AC_MSG_ERROR([The sysroot must be an absolute path.])
>>>     ;;
>>> esac
>>>
>>> If --with-sysroot is *not* set it should be picked-up from the
>>> compiler. But the switch statement above is wrong since the yes) and
>>> no) cases are swapped.
>>>
>>> Here is my configuration:
>>>
>>>          host-triplet: arm-poky-linux-gnueabi
>>>          shell: /bin/sh
>>>          compiler: arm-poky-linux-gnueabi-gcc  -march=armv7-a
>>> -mthumb-interwork -mfloat-abi=softfp -mtune=cortex-a9
>>> --sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi 
>>>
>>>          compiler flags: -O2 -pipe -g -feliminate-unused-debug-types
>>>          linker: arm-poky-linux-gnueabi-ld
>>> --sysroot=/proj/nci_up/cpri_splitter/poky-chris/1.4+snapshot/sysroots/cortexa9-vfp-poky-linux-gnueabi 
>>>
>>> (gnu? yes)
>>>          arm-poky-linux-gnueabi-libtool: (GNU libtool) 2.4.2
>>>          automake: automake (GNU automake) 1.12.6
>>>          autoconf: autoconf (GNU Autoconf) 2.69
>>>
>>> Thanks.
>>> Hans
> Here is a patch that corrects the problem. This patch has also been 
> sent to Yocto for review.
> Thanks.
> Hans
>
> -- 
>
> diff -ur libtool-2.4.2.orig/configure libtool-2.4.2/configure
> --- libtool-2.4.2.orig/configure 2013-09-05 10:37:50.982677000 +0200
> +++ libtool-2.4.2/configure 2013-09-05 10:12:24.551681000 +0200
> @@ -6814,7 +6814,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -6822,7 +6822,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/libltdl/configure 
> libtool-2.4.2/libltdl/configure
> --- libtool-2.4.2.orig/libltdl/configure 2013-09-05 10:37:24.738048000 
> +0200
> +++ libtool-2.4.2/libltdl/configure 2013-09-05 10:38:44.540026000 +0200
> @@ -6027,7 +6027,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -6035,7 +6035,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/libltdl/m4/libtool.m4
> libtool-2.4.2/libltdl/m4/libtool.m4
> --- libtool-2.4.2.orig/libltdl/m4/libtool.m4 2013-09-05 
> 10:37:24.690013000 +0200
> +++ libtool-2.4.2/libltdl/m4/libtool.m4 2013-09-05 12:05:51.560281000 
> +0200
> @@ -1234,7 +1234,7 @@
>  dnl in case the user passed a directory name.
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -1242,7 +1242,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     AC_MSG_RESULT([${with_libtool_sysroot}])
> diff -ur libtool-2.4.2.orig/tests/cdemo/configure
> libtool-2.4.2/tests/cdemo/configure
> --- libtool-2.4.2.orig/tests/cdemo/configure 2013-09-05 
> 10:37:24.793021000 +0200
> +++ libtool-2.4.2/tests/cdemo/configure 2013-09-05 10:39:01.039463000 
> +0200
> @@ -5907,7 +5907,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5915,7 +5915,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/demo/configure
> libtool-2.4.2/tests/demo/configure
> --- libtool-2.4.2.orig/tests/demo/configure 2013-09-05 
> 10:37:24.878048000 +0200
> +++ libtool-2.4.2/tests/demo/configure 2013-09-05 10:39:15.357833000 
> +0200
> @@ -5905,7 +5905,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5913,7 +5913,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/depdemo/configure
> libtool-2.4.2/tests/depdemo/configure
> --- libtool-2.4.2.orig/tests/depdemo/configure 2013-09-05
> 10:37:25.003086000 +0200
> +++ libtool-2.4.2/tests/depdemo/configure 2013-09-05 
> 10:39:33.424217000 +0200
> @@ -5902,7 +5902,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5910,7 +5910,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/f77demo/configure
> libtool-2.4.2/tests/f77demo/configure
> --- libtool-2.4.2.orig/tests/f77demo/configure 2013-09-05
> 10:37:25.232029000 +0200
> +++ libtool-2.4.2/tests/f77demo/configure 2013-09-05 
> 12:02:54.749911000 +0200
> @@ -6887,7 +6887,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -6895,7 +6895,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/fcdemo/configure
> libtool-2.4.2/tests/fcdemo/configure
> --- libtool-2.4.2.orig/tests/fcdemo/configure 2013-09-05
> 10:37:25.320032000 +0200
> +++ libtool-2.4.2/tests/fcdemo/configure 2013-09-05 12:03:34.350859000 
> +0200
> @@ -6986,7 +6986,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -6994,7 +6994,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/mdemo/configure
> libtool-2.4.2/tests/mdemo/configure
> --- libtool-2.4.2.orig/tests/mdemo/configure 2013-09-05 
> 10:37:25.458028000 +0200
> +++ libtool-2.4.2/tests/mdemo/configure 2013-09-05 12:04:04.233622000 
> +0200
> @@ -5934,7 +5934,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5942,7 +5942,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/mdemo2/configure
> libtool-2.4.2/tests/mdemo2/configure
> --- libtool-2.4.2.orig/tests/mdemo2/configure 2013-09-05
> 10:37:25.564096000 +0200
> +++ libtool-2.4.2/tests/mdemo2/configure 2013-09-05 12:04:36.688447000 
> +0200
> @@ -5907,7 +5907,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5915,7 +5915,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/pdemo/configure
> libtool-2.4.2/tests/pdemo/configure
> --- libtool-2.4.2.orig/tests/pdemo/configure 2013-09-05 
> 10:37:25.619085000 +0200
> +++ libtool-2.4.2/tests/pdemo/configure 2013-09-05 12:04:50.578801000 
> +0200
> @@ -5910,7 +5910,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -5918,7 +5918,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
> diff -ur libtool-2.4.2.orig/tests/tagdemo/configure
> libtool-2.4.2/tests/tagdemo/configure
> --- libtool-2.4.2.orig/tests/tagdemo/configure 2013-09-05
> 10:37:25.727040000 +0200
> +++ libtool-2.4.2/tests/tagdemo/configure 2013-09-05 
> 12:05:11.896353000 +0200
> @@ -6926,7 +6926,7 @@
>
>  lt_sysroot=
>  case ${with_libtool_sysroot} in #(
> - yes)
> + no)
>     if test "$GCC" = yes; then
>       lt_sysroot=`$CC --print-sysroot 2>/dev/null`
>     fi
> @@ -6934,7 +6934,7 @@
>   /*)
>     lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
>     ;; #(
> - no|'')
> + yes|'')
>     ;; #(
>   *)
>     { $as_echo "$as_me:${as_lineno-$LINENO}: result:
> ${with_libtool_sysroot}" >&5
>
>
And oh, note that this patch is based on the Yocto baseline which means 
"with_sysroot" was replaced with "with_libtool_sysroot" and thus can not 
be applied directly on upstream libtool.

Thanks.
Hans

Message sent to bug-libtool@HIDDEN:

X-Loop: help-debbugs@HIDDEN
Subject: bug#15276: libtool.m4 incorrectly resolves lt_sysroot?
Resent-From: Hans Beckerus <hans.beckerus@HIDDEN>
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Date: Sat, 14 Sep 2013 12:28:43 +0200
From: Hans Beckerus <hans.beckerus@HIDDEN>
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The previous suggested patch was no good. Due to some unknown reason some distributions of gcc reports the built-in sysroot as "/" and some does
not report a sysroot at all. Both should work in equal ways. However, on some hosts libtool does not seem to like having "/" as sysroot and that results in build failures. If sysroot is left unset it works fine. This patch has now been updated to workaround also this behavior by detecting a simple "/" and
unset lt_sysroot if that is the case.  Still note that this patch is not written for upstream version of libtool, it only shows what changes have been suggested so far in oe-core.

Thanks.
Hans

---

diff -ur libtool-2.4.2.orig/libltdl/m4/libtool.m4 libtool-2.4.2/libltdl/m4/libtool.m4
--- libtool-2.4.2.orig/libltdl/m4/libtool.m4    2013-09-13 22:37:43.647282945 +0200
+++ libtool-2.4.2/libltdl/m4/libtool.m4 2013-09-14 10:27:37.168178605 +0200
@@ -1234,16 +1234,21 @@
 dnl in case the user passed a directory name.
 lt_sysroot=
 case ${with_libtool_sysroot} in #(
- yes)
+ no)
    if test "$GCC" = yes; then
      lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+     # Treat "/" the same a an unset sysroot. It seems to be more
+     # compatible across host platforms that way!?
+     if test "$lt_sysroot" = /; then
+       lt_sysroot=
+     fi
    fi
    ;; #(
+ yes|''|/)
+   ;; #(
  /*)
    lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
    ;; #(
- no|'')
-   ;; #(
  *)
    AC_MSG_RESULT([${with_libtool_sysroot}])
    AC_MSG_ERROR([The sysroot must be an absolute path.])

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