50-moves rule improvement for transposition table

[stockfish] / src / Makefile

diff --git a/src/Makefile b/src/Makefile
index 285d314ec302d34e9d200bce53fa5c42ad243fdf..679eb8d90fcb740c183660ed9eae3682e9a2c6f7 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -290,7 +290,7 @@ ifeq ($(optimize),yes)
                        CXXFLAGS += -fno-gcse -mthumb -march=armv7-a -mfloat-abi=softfp
                endif
        endif
-       
+
        ifeq ($(comp),$(filter $(comp),gcc clang icc))
                ifeq ($(KERNEL),Darwin)
                        CXXFLAGS += -mdynamic-no-pic
@@ -328,7 +328,7 @@ endif
 ifeq ($(pext),yes)
        CXXFLAGS += -DUSE_PEXT
        ifeq ($(comp),$(filter $(comp),gcc clang mingw))
-               CXXFLAGS += -mbmi2
+               CXXFLAGS += -msse4 -mbmi2
        endif
 endif
 
@@ -379,10 +379,10 @@ help:
        @echo ""
        @echo "Supported archs:"
        @echo ""
-       @echo "x86-64                  > x86 64-bit"
-       @echo "x86-64-modern           > x86 64-bit with popcnt support"
-       @echo "x86-64-bmi2             > x86 64-bit with pext support"
-       @echo "x86-32                  > x86 32-bit with SSE support"
+       @echo "x86-64-bmi2             > x86 64-bit with pext support (also enables SSE4)"
+       @echo "x86-64-modern           > x86 64-bit with popcnt support (also enables SSE3)"
+       @echo "x86-64                  > x86 64-bit generic"
+       @echo "x86-32                  > x86 32-bit (also enables SSE)"
        @echo "x86-32-old              > x86 32-bit fall back for old hardware"
        @echo "ppc-64                  > PPC 64-bit"
        @echo "ppc-32                  > PPC 32-bit"
@@ -405,7 +405,7 @@ help:
        @echo "Advanced examples, for experienced users: "
        @echo ""
        @echo "make build ARCH=x86-64 COMP=clang"
-       @echo "make profile-build ARCH=x86-64-modern COMP=gcc COMPCXX=g++-4.8"
+       @echo "make profile-build ARCH=x86-64-bmi2 COMP=gcc COMPCXX=g++-4.8"
        @echo ""