Re: [PATCH i-g-t 1/7] intel-gpu-overlay: Move local perf implementation to a library

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On 29/09/2017 14:43, Petri Latvala wrote:
On Fri, Sep 29, 2017 at 01:39:33PM +0100, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Idea is to avoid duplication across multiple users in
upcoming patches.

v2: Commit message and use a separate library instead of piggy-
     backing to libintel_tools. (Chris Wilson)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
  lib/Makefile.am                  | 6 +++++-
  overlay/perf.c => lib/igt_perf.c | 2 +-
  overlay/perf.h => lib/igt_perf.h | 2 ++
  overlay/Makefile.am              | 6 ++----
  overlay/gem-interrupts.c         | 3 ++-
  overlay/gpu-freq.c               | 3 ++-
  overlay/gpu-perf.c               | 3 ++-
  overlay/gpu-top.c                | 3 ++-
  overlay/power.c                  | 3 ++-
  overlay/rc6.c                    | 3 ++-
  10 files changed, 22 insertions(+), 12 deletions(-)
  rename overlay/perf.c => lib/igt_perf.c (94%)
  rename overlay/perf.h => lib/igt_perf.h (99%)


This one was more of a doozey to mesonize for a newbie.

This is ugly but hopefully will make someone more knowledgeable point
out better ways and practices for using build targets vs. just lib
names around...

(Now sent with X-Patchwork-Hint, hopefully patchwork doesn't get
confused)

diff --git a/benchmarks/meson.build b/benchmarks/meson.build
index 9ab738f7..9f2672eb 100644
--- a/benchmarks/meson.build
+++ b/benchmarks/meson.build
@@ -31,6 +31,11 @@ endif
  foreach prog : benchmark_progs
  	# FIXME meson doesn't like binaries with the same name
  	# meanwhile just suffix with _bench
+	link = []
+	if prog == 'gem_wsim'
+	   link += lib_igt_perf
+	endif
  	executable(prog + '_bench', prog + '.c',
-			dependencies : test_deps)
+			dependencies : test_deps,
+			link_with : link)
  endforeach
diff --git a/lib/meson.build b/lib/meson.build
index 203be520..2c33493d 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -178,4 +178,8 @@ lib_igt = declare_dependency(link_with : lib_igt_build,
igt_deps = [ lib_igt ] + lib_deps +lib_igt_perf = static_library('igt_perf',
+    ['igt_perf.c']
+)
+
  subdir('tests')
diff --git a/overlay/meson.build b/overlay/meson.build
index a92ef895..ffc011cc 100644
--- a/overlay/meson.build
+++ b/overlay/meson.build
@@ -10,7 +10,6 @@ gpu_overlay_src = [
  	'gpu-freq.c',
  	'igfx.c',
  	'overlay.c',
-	'perf.c',
  	'power.c',
  	'rc6.c',
  ]
@@ -56,5 +55,6 @@ if xrandr.found() and cairo.found()
  			include_directories : inc,
  			c_args : gpu_overlay_cflags,
  			dependencies : gpu_overlay_deps,
+			link_with : lib_igt_perf,
  			install : true)
  endif

Grumble, can we have a switch over day where it all gets converted to meson by the people in the know, and until then not concern ourselves with a two-headed build system?

At the moment it is just a distraction and time waste if everybody working on IGT has to test both build systems.

I know meson is great and all that by I'd rather focus on the actual work than having to maintain parallel build systems. Especially since I am clueless on it, so it would be one more thing competing for limited brain resources.

Regards,

Tvrtko
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