[PATCH] elf: Use a temporary file to generate Makefile fragments [BZ #28550]
H.J. Lu
hjl.tools@gmail.com
Tue Nov 16 04:48:47 GMT 2021
On Mon, Nov 15, 2021 at 12:18 PM Adhemerval Zanella
<adhemerval.zanella@linaro.org> wrote:
>
>
>
> On 15/11/2021 16:51, H.J. Lu wrote:
> > On Mon, Nov 15, 2021 at 10:59 AM Adhemerval Zanella
> > <adhemerval.zanella@linaro.org> wrote:
> >>
> >>
> >>
> >> On 08/11/2021 12:42, H.J. Lu via Libc-alpha wrote:
> >>> Generate Makefile fragment for DSO sorting tests at configure time.
> >>>
> >>> This partially fixes BZ #28550.
> >>
> >> I am not sure if configure.ac is the right place to generate the Makefile
> >> fragment required for tests. Can we use 'avoid-generated' instead?
> >>
> >>
> >> diff --git a/elf/Makefile b/elf/Makefile
> >> index a311c3e23c..8556105a20 100644
> >> --- a/elf/Makefile
> >> +++ b/elf/Makefile
> >> @@ -491,6 +491,7 @@ tests-special += $(objpfx)order-cmp.out $(objpfx)tst-array1-cmp.out \
> >> $(objpfx)tst-unused-dep-cmp.out
> >> endif
> >>
> >> +ifndef avoid-generated
> >> # DSO sorting tests:
> >> # The dso-ordering-test.py script generates testcase source files in $(objpfx),
> >> # creating a $(objpfx)<testcase-name>-dir for each testcase, and creates a
> >> @@ -507,6 +508,7 @@ ifeq (yes,$(have-tunables))
> >> $(eval $(call include_dsosort_tests,dso-sort-tests-1.def))
> >> $(eval $(call include_dsosort_tests,dso-sort-tests-2.def))
> >> endif
> >> +endif
> >
> > It doesn't work. "make check -j28" on a machine with 112 cores failed:
> >
> > /export/users/hjl/build/gnu/tools-build/glibc-cet-gitlab/build-x86_64-linux/elf/dso-sort-tests-1.def.generated-makefile:938:
> > warning: ignoring old recipe for target
> > '/export/users/hjl/build/gnu/tools-build/glibc-cet-gitlab/build-x86_64-linux/elf/tst-dso-ordering9-dir/tst-dso-ordering9_25-bacde-b.so'
> > ...
> > make[3]: *** [Makefile:483: elf/tests] Error 2
> >
> > I couldn't find the exact error message in a very long make log file.
> This is usual way to create other auto-generated Makefile fragments, such as
> sysd-sycalls and time64-compat.mk. Maybe the below helps (I forgot to use
> '-include' and add the fragments on postclean-generated).
>
>
> diff --git a/elf/Makefile b/elf/Makefile
> index a311c3e23c..0e6d7ffb51 100644
> --- a/elf/Makefile
> +++ b/elf/Makefile
> @@ -491,6 +491,7 @@ tests-special += $(objpfx)order-cmp.out $(objpfx)tst-array1-cmp.out \
> $(objpfx)tst-unused-dep-cmp.out
> endif
>
> +ifndef avoid-generated
> # DSO sorting tests:
> # The dso-ordering-test.py script generates testcase source files in $(objpfx),
> # creating a $(objpfx)<testcase-name>-dir for each testcase, and creates a
> @@ -499,7 +500,7 @@ define include_dsosort_tests
> $(objpfx)$(1).generated-makefile: $(1)
> $(PYTHON) $(..)scripts/dso-ordering-test.py \
> --description-file $$< --objpfx $(objpfx) --output-makefile $$@
> -include $(objpfx)$(1).generated-makefile
> +-include $(objpfx)$(1).generated-makefile
> endef
>
> # Generate from each testcase description file
> @@ -507,6 +508,10 @@ ifeq (yes,$(have-tunables))
> $(eval $(call include_dsosort_tests,dso-sort-tests-1.def))
> $(eval $(call include_dsosort_tests,dso-sort-tests-2.def))
> endif
> +endif
> +
> +postclean-generated += $(objpfx)/dso-sort-tests-2.generated-makefile \
> + $(objpfx)/dso-sort-tests-2.generated-makefile
>
> check-abi: $(objpfx)check-abi-ld.out
> tests-special += $(objpfx)check-abi-ld.out
This works for me.
Thanks.
--
H.J.
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