From: Tomasz Sobczyk <tomasz.sobczyk1997@gmail.com>
Date: Sat, 27 Feb 2021 10:52:18 +0000 (+0100)
Subject: Allow using Intel SDE for PGO builds.
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=f28303d214645e37ee13b5c285d33142dd71bcb1

Allow using Intel SDE for PGO builds.

The software development emulator (SDE) allows to run binaries compiled
for architectures not supported by the actual CPU. This is useful to
do PGO builds for newer architectures. The SDE can currently be obtained from
https://software.intel.com/content/www/us/en/develop/articles/intel-software-development-emulator.html

This patch introduces a new optional makefile argument SDE_PATH.
If not empty it should contain the path to the sde executable

closes https://github.com/official-stockfish/Stockfish/pull/3373

No functional change.
---

diff --git a/src/Makefile b/src/Makefile
index eb32758f..cdd2007f 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -31,7 +31,11 @@ PREFIX = /usr/local
 BINDIR = $(PREFIX)/bin
 
 ### Built-in benchmark for pgo-builds
-PGOBENCH = ./$(EXE) bench
+ifeq ($(SDE_PATH),)
+	PGOBENCH = ./$(EXE) bench
+else
+	PGOBENCH = $(SDE_PATH) -- ./$(EXE) bench
+endif
 
 ### Source and object files
 SRCS = benchmark.cpp bitbase.cpp bitboard.cpp endgame.cpp evaluate.cpp main.cpp \