This patch fixes two problems:
- it cleanups linux-user variants (for instance ppc64-linux-user
  and ppc64le-linux-user)
- it removes the .o file when it removes the .d file, otherwise the .o
  file is never updated

Fixes: 5f29856b852d ("linux-user, configure: improve syscall_nr.h dependencies checking")
Fixes: 4d6a835dea47 ("linux-user: introduce parameters to generate syscall_nr.h")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 configure | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index da09c3589572..89fe881dd46f 100755
--- a/configure
+++ b/configure
@@ -1910,9 +1910,11 @@ 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
-    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 {} \;
+    for target in ${arch}*-linux-user ; do
+        test -d "${target}" && find "${target}" -type f -name "*.d" \
+             -exec grep -q "${source_path}/linux-user/${arch}/syscall_nr.h" {} \; \
+             -print | while read file ; do rm "${file}" "${file%.d}.o" ; done
+    done
 done
 
 if test -z "$python"
-- 
2.25.1

On 3/25/20 12:57 AM, Laurent Vivier wrote:
> This patch fixes two problems:
> - it cleanups linux-user variants (for instance ppc64-linux-user
>   and ppc64le-linux-user)
> - it removes the .o file when it removes the .d file, otherwise the .o
>   file is never updated
> 
> Fixes: 5f29856b852d ("linux-user, configure: improve syscall_nr.h dependencies checking")
> Fixes: 4d6a835dea47 ("linux-user: introduce parameters to generate syscall_nr.h")
> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
> ---
>  configure | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

I haven't been able to reproduce the same failure from master, but this looks
right.


r~

Le 25/03/2020 à 17:01, Richard Henderson a écrit :
> On 3/25/20 12:57 AM, Laurent Vivier wrote:
>> This patch fixes two problems:
>> - it cleanups linux-user variants (for instance ppc64-linux-user
>>   and ppc64le-linux-user)
>> - it removes the .o file when it removes the .d file, otherwise the .o
>>   file is never updated
>>
>> Fixes: 5f29856b852d ("linux-user, configure: improve syscall_nr.h dependencies checking")
>> Fixes: 4d6a835dea47 ("linux-user: introduce parameters to generate syscall_nr.h")
>> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
>> ---
>>  configure | 8 +++++---
>>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> 
> I haven't been able to reproduce the same failure from master, but this looks
> right.
> 

To reproduce the failure (either the one with the vsyscalls or the one
with missing TARGET_NR_XXX define reported by dgilbert/imammedo on the
IRC), I did:

git checkout -f v4.2.0 && \
./build.sh reset && \
git checkout master && \
./build.sh

and build.sh is:
------8<------------------------------------------------------------------
SRC=$PWD
OBJ=$SRC/build
DIR=test-linux-user
TEST=/backup/linux-user-test-0.3

set -x
if [ "$1" = "reset" ] ; then
    (cd $OBJ && \
     rm -fr $DIR && \
     mkdir $DIR && \
     cd $DIR && \
     "$SRC/configure" '--cc=ccache gcc' '--enable-debug' '--static'
'--disable-system' '--disable-gnutls' '--disable-tools')
fi

make --output-sync -C $OBJ/$DIR -j 17 && \
make --output-sync -C $OBJ/$DIR -j check V=1 && \
make --output-sync BUILDDIR=$OBJ/$DIR -C $TEST test
------8<------------------------------------------------------------------

Thanks,
Laurent