--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/make/toolchain.sh Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,181 @@
+#!/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(__clang__)
+ printf("clang\n");
+#elif defined(__GNUC__)
+ printf("gcc\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(__clang__)
+ std::cout << "clang" << std::endl;
+#elif defined(__GNUC__)
+ std::cout << "gcc" << 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 C compiler... "
+
+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=`$TEMP_DIR/checkcc`
+ USE_TOOLCHAIN=$TOOLCHAIN_NAME
+ 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
+ USE_TOOLCHAIN="gcc"
+ fi
+ fi
+ if [ $TOOLCHAIN_NAME = "clang" ]; then
+ check_c_compiler "clang"
+ if [ $? -eq 0 ]; then
+ COMP=clang
+ USE_TOOLCHAIN="clang"
+ fi
+ fi
+ fi
+
+ TOOLCHAIN_NAME=$USE_TOOLCHAIN
+ TOOLCHAIN_CC=$COMP
+ echo $COMP
+ 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`
+ USE_TOOLCHAIN=$TOOLCHAIN_NAME
+ if [ $TOOLCHAIN_NAME = "gcc" ]; then
+ check_cpp_compiler "g++"
+ if [ $? -eq 0 ]; then
+ COMP=g++
+ USE_TOOLCHAIN="gcc"
+ fi
+ fi
+ if [ $TOOLCHAIN_NAME = "clang" ]; then
+ check_cpp_compiler "clang++"
+ if [ $? -eq 0 ]; then
+ COMP=clang++
+ USE_TOOLCHAIN="clang"
+ fi
+ fi
+ fi
+
+ TOOLCHAIN_NAME=$USE_TOOLCHAIN
+ TOOLCHAIN_CXX=$COMP
+ echo $COMP
+ 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
+ echo >> $TEMP_DIR/config.mk
+
+ cat "make/${TOOLCHAIN_NAME}.mk" > /dev/null 2>&1
+ if [ $? -eq 0 ]; then
+ echo "include \$(BUILD_ROOT)/make/${TOOLCHAIN_NAME}.mk" >> $TEMP_DIR/config.mk
+ else
+ echo "SHLIB_CFLAGS = -fPIC" >> $TEMP_DIR/config.mk
+ echo "SHLIB_LDFLAGS = -shared" >> $TEMP_DIR/config.mk
+ fi
+fi