diff -r 7fe53d5d587c -r e870a7c8f223 make/toolchain.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/toolchain.sh	Sat Aug 03 17:54:54 2019 +0200
@@ -0,0 +1,170 @@
+#!/bin/sh
+#
+# toolchain detection
+#
+
+C_COMPILERS="cc gcc clang suncc"
+CPP_COMPILERS="CC g++ clang++ sunCC"
+unset CC_ARG_CHECKED
+unset TOOLCHAIN_DETECTION_ERROR
+unset TOOLCHAIN_NAME
+
+check_c_compiler()
+{
+    cat > $TEMP_DIR/test.c << __EOF__
+/* test file */
+#include <stdio.h>
+int main(int argc, char **argv) {
+#if defined(__GNUC__)
+    printf("gcc\n");
+#elif defined(__clang__)
+    printf("clang\n");
+#elif defined(__sun)
+    printf("suncc\n");
+#else
+    printf("unknown\n");
+#endif
+    return 0;
+}
+__EOF__
+    rm -f $TEMP_DIR/checkcc
+    $1 -o $TEMP_DIR/checkcc $CFLAGS $LDFLAGS $TEMP_DIR/test.c 2> /dev/null
+    
+    if [ $? -ne 0 ]; then
+        return 1
+    fi
+    return 0
+}
+
+check_cpp_compiler()
+{
+    cat > $TEMP_DIR/test.cpp << __EOF__
+/* test file */
+#include <iostream>
+int main(int argc, char **argv) {
+#if defined(__GNUC__)
+    std::cout << "gcc" << std::endl;
+#elif defined(__clang__)
+    std::cout << "clang" << std::endl;
+#elif defined(__sun)
+	std::cout << "suncc" << std::endl;
+#else
+    std::cout << "unknown" << std::endl;
+#endif
+    return 0;
+}
+__EOF__
+    rm -f $TEMP_DIR/checkcc
+    $1 -o $TEMP_DIR/checkcc $CXXFLAGS $LDFLAGS $TEMP_DIR/test.cpp 2> /dev/null
+    
+    if [ $? -ne 0 ]; then
+        return 1
+    fi
+    return 0
+}
+
+printf "detect toolchain... "
+
+for COMP in $C_COMPILERS
+do
+    check_c_compiler $COMP
+    if [ $? -ne 0 ]; then
+	    if [[ ! -z $CC ]]; then
+        	if [ $COMP = $CC ]; then
+            	echo "$CC is not a working C Compiler"
+            	TOOLCHAIN_DETECTION_ERROR="error"
+            	break
+        	fi
+		fi
+    else
+        TOOLCHAIN_NAME=`$TEMP_DIR/checkcc`
+		if [ $COMP = "cc" ]; then
+		   # we have found a working compiler, but in case
+		   # the compiler is gcc or clang, we try to use
+		   # these commands and not 'cc'
+		   TOOLCHAIN_NAME=`$TEMP_DIR/checkcc`
+		   if [ $TOOLCHAIN_NAME = "gcc" ]; then
+		       check_c_compiler "gcc"
+			   if [ $? -eq 0 ]; then
+			       COMP=gcc
+			   fi
+		   fi
+		   if [ $TOOLCHAIN_NAME = "clang" ]; then
+		       check_c_compiler "clang"
+			   if [ $? -eq 0 ]; then
+			       COMP=clang
+			   fi
+		   fi
+		fi
+		
+		TOOLCHAIN_NAME=`$TEMP_DIR/checkcc`
+        TOOLCHAIN_CC=$COMP
+        echo $TOOLCHAIN_NAME 
+        break
+    fi
+done
+if [ -z $TOOLCHAIN_CC ]; then
+    echo "not found"
+fi
+
+printf "detect C++ compiler... "
+
+for COMP in $CPP_COMPILERS
+do
+    check_cpp_compiler $COMP
+    if [ $? -ne 0 ]; then
+		if [[ ! -z $CXX ]]; then
+        	if [ $COMP = $CXX ]; then
+                echo "$CC is not a working C++ Compiler"
+                TOOLCHAIN_DETECTION_ERROR="error"
+                break
+            fi
+		fi
+    else
+        if [ $COMP = "CC" ]; then
+		   # we have found a working compiler, but in case
+		   # the compiler is gcc or clang, we try to use
+		   # these commands and not 'cc'
+		   TOOLCHAIN_NAME=`$TEMP_DIR/checkcc`
+		   if [ $TOOLCHAIN_NAME = "gcc" ]; then
+		       check_c_compiler "gcc"
+			   if [ $? -eq 0 ]; then
+			       COMP=gcc
+			   fi
+		   fi
+		   if [ $TOOLCHAIN_NAME = "clang" ]; then
+		       check_c_compiler "clang"
+			   if [ $? -eq 0 ]; then
+			       COMP=clang
+			   fi
+		   fi
+		fi
+		
+		TOOLCHAIN_NAME=`$TEMP_DIR/checkcc`
+        TOOLCHAIN_CXX=$COMP
+        echo $TOOLCHAIN_NAME 
+        break
+    fi
+done
+if [ -z $TOOLCHAIN_CXX ]; then
+    echo "not found"
+fi
+
+TOOLCHAIN_LD=$TOOLCHAIN_CC
+
+if [ -z TOOLCHAIN_NAME ]; then
+    TOOLCHAIN_DETECTION_ERROR="error"
+else
+    cat >> $TEMP_DIR/config.mk << __EOF__
+# toolchain
+__EOF__
+	echo "CC = ${TOOLCHAIN_CC}" >> $TEMP_DIR/config.mk
+	if [[ ! -z $TOOLCHAIN_CXX ]]; then
+		echo "CXX = ${TOOLCHAIN_CXX}" >> $TEMP_DIR/config.mk
+	fi
+    echo "LD = ${TOOLCHAIN_LD}" >> $TEMP_DIR/config.mk
+    
+    if [ -e "make/${TOOLCHAIN_NAME}.mk" ]; then 
+        echo "include \$(BUILD_ROOT)/make/${TOOLCHAIN_NAME}.mk" >> $TEMP_DIR/config.mk
+    fi
+fi