PATCH: PR driver/46712: exec-tool.in doesn't work with -fuse-linker-plugin in a gcc+binutils combined tree

[H.J. Lu]

On Mon, Nov 29, 2010 at 2:00 PM, Ralf Wildenhues <Ralf.Wildenhues@gmx.de> wrote:
> * H.J. Lu wrote on Mon, Nov 29, 2010 at 09:36:28PM CET:
>> exec-tool.in uses LT_RCU to check recursive calls on as/ld in a
>> gcc+binutils combined tree. However, it doesn't work with
>> -fuse-linker-plugin, which calls ld, which calls as.  This patch
>> checks and exports LT_RCU_$id instead of LT_RCU.  OK for trunk?
>
> I'm not sure if a build maintainer can approve this, but it looks good

I think it is the part of build scripts.

> to me with one nit below.
>
> Thanks,
> Ralf
>
>> 2010-11-29  H.J. Lu  <hongjiu.lu@intel.com>
>>
>>       PR driver/46712
>>       * exec-tool.in (id): New.
>>       Check and export LT_RCU_$id instead of LT_RCU.
>
>> --- a/gcc/exec-tool.in
>> +++ b/gcc/exec-tool.in
>> @@ -28,6 +28,7 @@ fast_install=@enable_fast_install@
>>  objdir=@objdir@
>>
>>  invoked=`basename "$0"`
>> +id=$invoked
>>  case "$invoked" in
>>    as)
>>      original=$ORIGINAL_AS_FOR_TARGET
>> @@ -44,6 +45,7 @@ case "$invoked" in
>>      fi
>>      prog=ld-new$exeext
>>      dir=ld
>> +    id=ld
>>      ;;
>>    nm)
>>      original=$ORIGINAL_NM_FOR_TARGET
>> @@ -68,9 +70,11 @@ case "$original" in
>>        # libtool has not relinked ld-new yet, but we cannot just use the
>>        # previous stage (because then the relinking would just never happen!).
>>        # So we take extra care to use prev-ld/ld-new *on recursive calls*.
>> +      eval LT_RCU="\${LT_RCU_$id}"
>>        test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
>>
>> -      LT_RCU=1; export LT_RCU
>> +      eval LT_RCU_$id=1
>> +      eval export LT_RCU_$id
>
> FWIW, this last eval is not necessary.
>
>>        $scriptdir/../$dir/$prog ${1+"$@"}
>>        result=$?
>>        exit $result
>
>

I am checking in this patch.

Thanks.

-- 
H.J.
---
2010-11-29  H.J. Lu  <hongjiu.lu@intel.com>

	PR driver/46712
	* exec-tool.in (id): New.
	Check and export LT_RCU_$id instead of LT_RCU.

diff --git a/gcc/exec-tool.in b/gcc/exec-tool.in
index 0ae8f2a..dff73a6 100644
--- a/gcc/exec-tool.in
+++ b/gcc/exec-tool.in
@@ -28,6 +28,7 @@ fast_install=@enable_fast_install@
 objdir=@objdir@

 invoked=`basename "$0"`
+id=$invoked
 case "$invoked" in
   as)
     original=$ORIGINAL_AS_FOR_TARGET
@@ -44,6 +45,7 @@ case "$invoked" in
     fi
     prog=ld-new$exeext
     dir=ld
+    id=ld
     ;;
   nm)
     original=$ORIGINAL_NM_FOR_TARGET
@@ -68,9 +70,11 @@ case "$original" in
       # libtool has not relinked ld-new yet, but we cannot just use the
       # previous stage (because then the relinking would just never happen!).
       # So we take extra care to use prev-ld/ld-new *on recursive calls*.
+      eval LT_RCU="\${LT_RCU_$id}"
       test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}

-      LT_RCU=1; export LT_RCU
+      eval LT_RCU_$id=1
+      export LT_RCU_$id
       $scriptdir/../$dir/$prog ${1+"$@"}
       result=$?
       exit $result
@@ -83,5 +87,3 @@ case "$original" in
     exec $original ${1+"$@"}
     ;;
 esac
-
-