[Mesa-dev] [PATCH] anv: vulkan: remove the anv_device.$(OBJEXT) rule

[Jason Ekstrand]

So here's a thought: could we make anv_timestamp.h generation trigger off
of libvulkan_intel.so getting rebuilt?  I'm not quite sure how one would
even do that but it seems like a thing you might be able to do...
On Jul 6, 2016 8:18 AM, "Emil Velikov" <emil.l.velikov at gmail.com> wrote:

> From: Emil Velikov <emmil.velikov at collabora.com>
>
> Atm the actual rule will expand to foo.o which is used for static
> libraries only.
>
> Thus the automake manual recommendation [to use OBJEXT] won't help us,
> since since we're working with a shared library.
>
> Thus let's 'demote' the file and add it back to BUILT_SOURCES. This will
> manage all the complexity for us, at the (existing expense) of working
> only with the all, check and install targets.
>
> The crazy (why the issue was hard to spot):
> If the dependencies (.deps/*.Plo) are already created one can alter the
> anv_device.$(OBJEXT) line and/or nuke it all together. That won't lead
> to any warnings/issues, even though the Makefile is regenerated.
>
> Moral of the story:
> Always rm -rf top_builddir or don't resolve the dependencies manually
> and use BUILT_SOURCES.
>
> Cc: "12.0" <mesa-stable at lists.freedesktop.org>
> Cc: Vinson Lee <vlee at freedesktop.org>
> Cc: Kenneth Graunke <kenneth at whitecape.org>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96825
> Fixes: d7a604c3f7a ("anv: use cache uuid based on the build timestamp.")
> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
> ---
> Just checking if make distcheck will find any fall-outs, but should work
> like a charm.
>
>  src/intel/vulkan/Makefile.am      | 4 +---
>  src/intel/vulkan/Makefile.sources | 3 ++-
>  2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/src/intel/vulkan/Makefile.am b/src/intel/vulkan/Makefile.am
> index b605c08..0e521cf 100644
> --- a/src/intel/vulkan/Makefile.am
> +++ b/src/intel/vulkan/Makefile.am
> @@ -144,10 +144,8 @@ anv_timestamp.h:
>         @echo "Updating anv_timestamp.h"
>         $(AM_V_GEN) echo "#define ANV_TIMESTAMP \"$(TIMESTAMP_CMD)\"" > $@
>
> -anv_device.$(OBJEXT): anv_timestamp.h
> -
>  BUILT_SOURCES = $(VULKAN_GENERATED_FILES)
> -CLEANFILES = $(BUILT_SOURCES) dev_icd.json anv_timestamp.h
> +CLEANFILES = $(BUILT_SOURCES) dev_icd.json
>  EXTRA_DIST = \
>         $(top_srcdir)/include/vulkan/vk_icd.h \
>         anv_entrypoints_gen.py \
> diff --git a/src/intel/vulkan/Makefile.sources
> b/src/intel/vulkan/Makefile.sources
> index aa1459a..7303995 100644
> --- a/src/intel/vulkan/Makefile.sources
> +++ b/src/intel/vulkan/Makefile.sources
> @@ -66,7 +66,8 @@ VULKAN_GEM_STUB_FILES := \
>
>  VULKAN_GENERATED_FILES := \
>         anv_entrypoints.c \
> -       anv_entrypoints.h
> +       anv_entrypoints.h \
> +       anv_timestamp.h
>
>
>  GEN7_FILES := \
> --
> 2.8.2
>
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