Add sse4 if bmi2 is enabled

[stockfish] / src / Makefile

diff --git a/src/Makefile b/src/Makefile
index 285d314ec302d34e9d200bce53fa5c42ad243fdf..6deb0e27a6a9faed0acb938267a1dfa11ef260dd 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -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
 
@@ -379,9 +379,9 @@ 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 "x86-64-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 with SSE support"
        @echo "x86-32-old              > x86 32-bit fall back for old hardware"
        @echo "ppc-64                  > PPC 64-bit"