Add source files

cpu_features.sh

@@ -0,0 +1,6 @@
+
+if [ `uname` == Darwin ]; then
+	sysctl -n machdep.cpu.features | tr 'A-Z' 'a-z' | sed -E 's/[[:space:]]+/'$'\\\n/g'
+else
+	cat /proc/cpuinfo | sed -n '/^flags\s*:\s*/s/^[^:]*:\s*//p' | uniq | tr 'A-Z' 'a-z' | sed 's/\s\+/\n/g'
+fi

cpu_has_bmi2.sh

@@ -0,0 +1,11 @@
+
+mydir=`dirname $0`
+bash $mydir/cpu_features.sh | grep -qs bmi2
+bmi2_status=${PIPESTATUS[1]}
+if [ $bmi2_status -eq 0 ] # 0 indicate success
+then
+	echo 1
+else
+	echo 0
+fi
+

gen_env_conf.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+#set -x
+
+CXX=$1
+COMPILER=$2
+EnvConf=$3
+echo COMPILER=$COMPILER 1>&2
+
+#EnvConf=Make.env.conf-${COMPILER}
+
+rm -f $EnvConf
+mkdir -p `dirname $EnvConf`
+
+cat > is_cygwin.cpp << "EOF"
+#include <stdio.h>
+int main() {
+  #ifdef __CYGWIN__
+    printf("1");
+  #else
+    printf("0");
+  #endif
+    return 0;
+}
+EOF
+if $CXX is_cygwin.cpp -o is_cygwin.exe; then
+	IS_CYGWIN=`./is_cygwin.exe`
+	echo IS_CYGWIN=$IS_CYGWIN >> $EnvConf
+fi
+rm -f is_cygwin.*
+
+if [ "$IS_CYGWIN" -eq 1 ]; then
+	rm -f a.exe
+else
+	rm -f a.out
+fi
+