Re: In tree configure errors since 6116aea9

[Laurent Vivier]

Le 21/03/2020 à 19:31, BALATON Zoltan a écrit :
> On Sat, 21 Mar 2020, Laurent Vivier wrote:
>> Le 21/03/2020 à 18:29, BALATON Zoltan a écrit :
>>> Hello,
>>>
>>> Since 6116aea99, or actually 4d6a835d (linux-user: introduce parameters
>>> to generate syscall_nr.h) but only next commit starts to enable it I get
>>> these errors when running configure in source tree:
>>>
>>> grep: ./.gitlab-ci.d: Is a directory
>>> grep: ./scripts/qemu-guest-agent/fsfreeze-hook.d: Is a directory
>>>
>>> for each entry in that loop over arches. Could this be silenced?
>>
>> I didn't see that because I always do an out-of-tree build.
> 
> Isn't there a test for that or should there be one?
> 
>> Could you try this?
>>
>> --- a/configure
>> +++ b/configure
>> @@ -1911,6 +1911,7 @@ for arch in alpha hppa m68k xtensa sh4 microblaze
>> arm ppc s390x sparc sparc64 \
>>     rm -f "${source_path}/linux-user/${arch}/syscall_nr.h"
>>     # remove the dependency files
>>     find . -name "*.d" \
>> +           -type f \
>>            -exec grep -q
>> "${source_path}/linux-user/${arch}/syscall_nr.h" {} \; \
>>            -exec rm {} \;
>> done
> 
> This gets rid of the errors but seems to be much slower:
> 
> with 4d6a835d running my usual configure script:
> 
> real    0m5.968s
> user    0m4.642s
> sys    0m1.402s
> 
> with HEAD and above patch:
> 
> real    0m20.246s
> user    0m14.143s
> sys    0m6.152s
> 
> Given that configure is rerun when some files change if there's a way to
> get at least the previous speed back might be better if possible.
> 
> Regards,
> BALATON Zoltan

Could you try this:

--- a/configure
+++ b/configure
@@ -1910,9 +1910,9 @@ for arch in alpha hppa m68k xtensa sh4 microblaze
arm ppc s390x sparc sparc64 \
     # remove the file if it has been generated in the source directory
     rm -f "${source_path}/linux-user/${arch}/syscall_nr.h"
     # remove the dependency files
-    find . -name "*.d" \
-           -exec grep -q
"${source_path}/linux-user/${arch}/syscall_nr.h" {} \; \
-           -exec rm {} \;
+    test -d ${arch}-linux-user && find ${arch}-linux-user -type f -name
"*.d" \
+         -exec grep -q "${source_path}/linux-user/${arch}/syscall_nr.h"
{} \; \
+         -exec rm {} \;
 done

 if test -z "$python"

Thanks,
Laurent