On Fri, Jun 24, 2016 at 11:59 AM, Emil Velikov <emil.l.veli...@gmail.com>
wrote:
> From: Emil Velikov <emil.veli...@collabora.com>
>
> Do not rely on the git sha1:
> - its current truncated form makes it less unique
> - it does not attribute for local (Vulkand or otherwise) changes
>
> Use a timestamp produced at the time of build. It's perfectly unique,
> unless someone explicitly thinkers with their system clock. Even then
> chances of producing the exact same one are very small, if not zero.
>
> v2: Remove .tmp rule. Its not needed since we want for the header to be
> regenerated on each time we call make (Eric).
>
> v3:
> - Honour SOURCE_DATE_EPOCH, to make the build reproducible (Michel)
> - Replace the generated header with a define, to prevent needless
> builds on consecutive `make' and/or `make install' calls. (Dave)
>
> v4:
> - Keep the timestamp generation at make time. (Jason)
>
> Cc: Michel Dänzer <mic...@daenzer.net>
> Cc: Dave Airlie <airl...@gmail.com>
> Cc: Jason Ekstrand <ja...@jlekstrand.net>
> Cc: mesa-sta...@lists.freedesktop.org
> Signed-off-by: Emil Velikov <emil.veli...@collabora.com>
> ---
> This should resolve the incremental builds, yet the solution looks quite
> nasty. As always, input on a cleaner one is appreciated.
> ---
> configure.ac | 2 ++
> src/intel/vulkan/Makefile.am | 12 ++++++++----
> src/intel/vulkan/Makefile.sources | 4 +++-
> src/intel/vulkan/anv_device.c | 3 +--
> 4 files changed, 14 insertions(+), 7 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index cc9bc47..acdb8c0 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2593,6 +2593,8 @@ AC_SUBST([XA_MINOR], $XA_MINOR)
> AC_SUBST([XA_TINY], $XA_TINY)
> AC_SUBST([XA_VERSION], "$XA_MAJOR.$XA_MINOR.$XA_TINY")
>
> +AC_SUBST([TIMESTAMP_CMD], '`test $(SOURCE_DATE_EPOCH) && echo
> $(SOURCE_DATE_EPOCH) || date +%s`')
> +
> AC_ARG_ENABLE(valgrind,
> [AS_HELP_STRING([--enable-valgrind],
> [Build mesa with valgrind support (default:
> auto)])],
> diff --git a/src/intel/vulkan/Makefile.am b/src/intel/vulkan/Makefile.am
> index 4d9ff90..c2ebc28 100644
> --- a/src/intel/vulkan/Makefile.am
> +++ b/src/intel/vulkan/Makefile.am
> @@ -33,10 +33,11 @@ lib_LTLIBRARIES = libvulkan_intel.la
> check_LTLIBRARIES = libvulkan-test.la
>
> PER_GEN_LIBS = \
> - libanv-gen7.la \
> - libanv-gen75.la \
> - libanv-gen8.la \
> - libanv-gen9.la
> + libanv-device.la \
> + libanv-gen7.la \
> + libanv-gen75.la \
> + libanv-gen8.la \
> + libanv-gen9.la
>
> noinst_LTLIBRARIES = $(PER_GEN_LIBS)
>
> @@ -63,6 +64,9 @@ AM_CPPFLAGS = \
>
> AM_CFLAGS = -Wno-override-init -msse2
>
> +libanv_device_la_CPPFLAGS = $(AM_CPPFLAGS)
> -DANV_TIMESTAMP=\"$(TIMESTAMP_CMD)\"
>
How does doing it this way fix the "make && make install" problem? It
needs to update the timestamp even if anv_device.c doesn't change.
> +libanv_device_la_SOURCES = $(ANV_DEVICE_FILES)
> +
> libanv_gen7_la_CFLAGS = $(AM_CFLAGS) -DGEN_VERSIONx10=70
> libanv_gen7_la_SOURCES = $(GEN7_FILES)
>
> diff --git a/src/intel/vulkan/Makefile.sources
> b/src/intel/vulkan/Makefile.sources
> index aa1459a..e4e4884 100644
> --- a/src/intel/vulkan/Makefile.sources
> +++ b/src/intel/vulkan/Makefile.sources
> @@ -24,7 +24,6 @@ VULKAN_FILES := \
> anv_batch_chain.c \
> anv_cmd_buffer.c \
> anv_descriptor_set.c \
> - anv_device.c \
> anv_dump.c \
> anv_formats.c \
> anv_genX.h \
> @@ -52,6 +51,9 @@ VULKAN_FILES := \
> genX_pipeline_util.h \
> vk_format_info.h
>
> +ANV_DEVICE_FILES := \
> + anv_device.c
> +
> VULKAN_WSI_WAYLAND_FILES := \
> anv_wsi_wayland.c
>
> diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
> index ea8e875..b463d44 100644
> --- a/src/intel/vulkan/anv_device.c
> +++ b/src/intel/vulkan/anv_device.c
> @@ -28,7 +28,6 @@
> #include <fcntl.h>
>
> #include "anv_private.h"
> -#include "git_sha1.h"
> #include "util/strtod.h"
> #include "util/debug.h"
>
> @@ -426,7 +425,7 @@ void
> anv_device_get_cache_uuid(void *uuid)
> {
> memset(uuid, 0, VK_UUID_SIZE);
> - snprintf(uuid, VK_UUID_SIZE, "anv-%s", MESA_GIT_SHA1 + 4);
> + snprintf(uuid, VK_UUID_SIZE, "anv-%s", ANV_TIMESTAMP);
> }
>
> void anv_GetPhysicalDeviceProperties(
> --
> 2.8.2
>
>
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