--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/make/toolchain.sh Sun Sep 24 18:43:58 2023 +0200
@@ -0,0 +1,186 @@
+#!/bin/sh
+#
+# toolchain detection
+#
+
+C_COMPILERS="gcc clang suncc cc"
+CPP_COMPILERS="g++ clang++ sunCC CC"
+unset TOOLCHAIN_NAME
+unset TOOLCHAIN_CC
+unset TOOLCHAIN_CXX
+
+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
+}
+
+check_cpp_compiler()
+{
+ cat > "$TEMP_DIR/test.cpp" << __EOF__
+/* test file */
+#include <iostream>
+int main(int argc, char **argv) {
+#if defined(__clang__)
+ std::cout << "clang" << std::endl;
+#elif defined(__GNUC__)
+ std::cout << "gcc" << std::endl;
+#elif defined(__sun)
+ std::cout << "suncc" << std::endl;
+#else
+ std::cout << "cc" << std::endl;
+#endif
+ return 0;
+}
+__EOF__
+ rm -f "$TEMP_DIR/checkcc"
+ $1 -o "$TEMP_DIR/checkcc" $CXXFLAGS $LDFLAGS "$TEMP_DIR/test.cpp" 2> /dev/null
+}
+
+create_libtest_source()
+{
+ # $1: filename
+ # $2: optional include
+ cat > "$TEMP_DIR/$1" << __EOF__
+/* libtest file */
+int main(int argc, char **argv) {
+ return 0;
+}
+__EOF__
+ if [ -n "$2" ]; then
+ echo "#include <$2>" >> "$TEMP_DIR/$1"
+ fi
+}
+
+check_c_lib()
+{
+ # $1: libname
+ # $2: optional include
+ if [ -z "$TOOLCHAIN_CC" ]; then
+ return 1
+ fi
+ create_libtest_source "test.c" "$2"
+ rm -f "$TEMP_DIR/checklib"
+ $TOOLCHAIN_CC -o "$TEMP_DIR/checklib" $CFLAGS $LDFLAGS "-l$1" "$TEMP_DIR/test.c" 2> /dev/null
+}
+
+check_cpp_lib()
+{
+ # $1: libname
+ # $2: optional include
+ if [ -z "$TOOLCHAIN_CXX" ]; then
+ return 1
+ fi
+ create_libtest_source "test.cpp" "$2"
+ rm -f "$TEMP_DIR/checklib"
+ $TOOLCHAIN_CXX -o "$TEMP_DIR/checklib" $CXXFLAGS $LDFLAGS "-l$1" "$TEMP_DIR/test.cpp" 2> /dev/null
+}
+
+check_lib()
+{
+ # $1: libname
+ # $2: optional include
+ if [ -n "$TOOLCHAIN_CC" ]; then
+ check_c_lib "$1" "$2"
+ elif [ -n "$TOOLCHAIN_CXX" ]; then
+ check_cpp_lib "$1" "$2"
+ fi
+}
+
+detect_c_compiler()
+{
+ if [ -n "$TOOLCHAIN_CC" ]; then
+ return 0
+ fi
+ printf "detect C compiler... "
+ if [ -n "$CC" ]; then
+ if check_c_compiler "$CC"; then
+ TOOLCHAIN_CC=$CC
+ TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+ echo "$CC"
+ return 0
+ else
+ echo "$CC is not a working C compiler"
+ return 1
+ fi
+ else
+ for COMP in $C_COMPILERS
+ do
+ if check_c_compiler "$COMP"; then
+ TOOLCHAIN_CC=$COMP
+ TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+ echo "$COMP"
+ return 0
+ fi
+ done
+ echo "not found"
+ return 1
+ fi
+}
+
+detect_cpp_compiler()
+{
+ if [ -n "$TOOLCHAIN_CXX" ]; then
+ return 0
+ fi
+ printf "detect C++ compiler... "
+
+ if [ -n "$CXX" ]; then
+ if check_cpp_compiler "$CXX"; then
+ TOOLCHAIN_CXX=$CXX
+ TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+ echo "$CXX"
+ return 0
+ else
+ echo "$CXX is not a working C++ compiler"
+ return 1
+ fi
+ else
+ for COMP in $CPP_COMPILERS
+ do
+ if check_cpp_compiler "$COMP"; then
+ TOOLCHAIN_CXX=$COMP
+ TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+ echo "$COMP"
+ return 0
+ fi
+ done
+ echo "${TOOLCHAIN_CXX:-"not found"}"
+ return 1
+ fi
+}
+
+write_toolchain_defaults()
+{
+ echo "# toolchain" >> "$1"
+ if [ -n "$TOOLCHAIN_CC" ]; then
+ echo "CC = ${TOOLCHAIN_CC}" >> "$1"
+ fi
+ if [ -n "$TOOLCHAIN_CXX" ]; then
+ echo "CXX = ${TOOLCHAIN_CXX}" >> "$1"
+ fi
+ echo >> "$1"
+ if [ -f "make/${TOOLCHAIN_NAME}.mk" ]; then
+ cat "make/${TOOLCHAIN_NAME}.mk" >> "$1"
+ elif [ -f "make/cc.mk" ]; then
+ cat "make/cc.mk" >> "$1"
+ else
+ echo "!!! WARNING !!! Default toolchain flags not found. Configuration might be incomplete."
+ fi
+}