diff --git a/script/detect_gcc b/script/detect_gcc
new file mode 100755
index 0000000000000000000000000000000000000000..87b5e510a77b34ccd7128b26861b1591a92e4ed9
--- /dev/null
+++ b/script/detect_gcc
@@ -0,0 +1,115 @@
+#! /bin/bash
+
+function detect_gcc_or_clang()
+{
+ command -v $1 >/dev/null 2>&1
+ if [ $? -ne 0 ]; then
+ dgc_ret=0
+ return
+ fi
+
+ # First we try to understand if g++ command line is linked to clang
+
+ $1 --version | grep "Apple LLVM"
+ if [ $? == 0 ]; then
+ echo "Apple LLVM based g++"
+
+ # we try the detect the version
+ major=$(g++ --version | grep LLVM | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*(.*/\1/g')
+
+ # we check if the detection is garbage
+ echo "$major" | egrep -q '^[0-9]+$'
+ if [ $? == 0 ]; then
+ dgc_major=$($1 --version | grep LLVM | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*(.*/\1/g')
+ dgc_middle=$($1 --version | grep LLVM | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*(.*/\2/g')
+ dgc_minor=$($1 --version | grep LLVM | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*(.*/\3/g')
+
+ if [ $dgc_major -gt 6 ]; then
+ echo -e "clang++ $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=1
+ elif [ $dgc_major -lt 6 ]; then
+ echo -e "clang++ $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your Apple clang $major.middle;$minor is too old, 6.1.0 or higher is required"
+ dgc_ret=0
+ elif [ $dgc_middle -gt 1 ]; then
+ echo -e "clang++ $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=1
+ elif [ $dgc_minor -lt 1 ]; then
+ echo -e "clang++ $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your Apple clang $major.middle;$minor is too old, 6.1.0 or higher is required"
+ dgc_ret=0
+ else
+ echo -e "Apple clang++ version $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=1
+ fi
+ return
+ fi
+ dgc_ret=2
+ return
+ fi
+
+ $1 --version | grep $1
+ if [ $? == 0 -a x"$1" == x"gcc" ]; then
+ dgc_major=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1/g')
+ dgc_middle=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\2/g')
+ dgc_minor=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\3/g')
+
+ if [ $dgc_major -gt 4 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=g++
+ dgc_ret=1
+ elif [ $dgc_major -lt 4 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your g++ version is too old, 4.8.2 at least required"
+ dgc_ret=0
+ elif [ $dgc_middle -gt 8 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=g++
+ dgc_ret=1
+ elif [ $dgc_middle -lt 8 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your g++ version is too old, 4.8.2 at least required"
+ dgc_ret=0
+ elif [ $dgc_minor -gt 1 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=g++
+ dgc_ret=1
+ else
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m FAILED \033[0m your g++ version is too old, 4.8.2 at least required"
+ dgc_ret=0
+ fi
+ return
+ fi
+
+ $1 --version | grep $1
+ if [ $? == 0 -a x"$1" == x"clang" ]; then
+ dgc_major=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1/g')
+ dgc_middle=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\2/g')
+ dgc_minor=$($1 --version | grep $1 | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\3/g')
+
+ if [ $dgc_major -gt 3 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=1
+ elif [ $dgc_major -lt 3 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your clang version is too old 3.6.0 at least required"
+ dgc_ret=0
+ elif [ $dgc_middle -gt 6 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=1
+ elif [ $dgc_middle -lt 6 ]; then
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[91;5;1m FAILED \033[0m your clang version is too old 3.6.0 at least required"
+ dgc_ret=0
+ else
+ echo -e "$1 $dgc_major.$dgc_middle.$dgc_minor \033[92;1m SUCCESS \033[0m"
+ dgc_compiler=clang++
+ dgc_ret=0
+ fi
+ return
+ fi
+
+
+ dgc_ret=0
+}
+
+
diff --git a/script/detect_osx b/script/detect_osx
new file mode 100755
index 0000000000000000000000000000000000000000..8dcba235c2b14f9230a17b7d9a1aab3abef485eb
--- /dev/null
+++ b/script/detect_osx
@@ -0,0 +1,50 @@
+#! /bin/bash
+
+function detect_osx()
+{
+ if [ x"$1" != x"osx" ]; then
+ return
+ fi
+
+ # Try first pattern
+
+ version=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1/g')
+ echo "$version" | egrep -q '^[0-9]+$'
+ if [ $? == 0 ]; then
+ dosx_major=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1/g')
+ dosx_middle=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\2/g')
+ dosx_minor=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\3/g')
+
+ if [ $dosx_major -gt 10 ]; then
+ dosx_ret=1
+ elif [ $dosx_major -lt 10 ]; then
+ dosx_ret=0
+ elif [ $dosx_middle -gt 10 ]; then
+ dosx_ret=1
+ elif [ $dosx_middle -lt 10 ]; then
+ dosx_ret=1
+ else
+ dosx_ret=0
+ fi
+ fi
+
+ version=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\).*/\1/g')
+ echo "$version" | egrep -q '^[0-9]+$'
+ if [ $? == 0 ]; then
+ dosx_major=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\).*/\1/g')
+ dosx_middle=$(sw_vers | grep ProductVersion | sed 's/.*\([0-9][0-9]\)\.\([0-9][0-9]*\).*/\2/g')
+
+ if [ $dosx_major -gt 10 ]; then
+ dosx_ret=1
+ elif [ $dosx_major -lt 10 ]; then
+ dosx_ret=0
+ elif [ $dosx_middle -gt 10 ]; then
+ dosx_ret=1
+ elif [ $dosx_middle -lt 10 ]; then
+ dosx_ret=1
+ else
+ dosx_ret=0
+ fi
+ fi
+}
+