altcross-2stage: check if newly build compilers work

altcross-2stage.sh

@@ -166,3 +166,16 @@ mv $BUILDDIR/specs "$INSTALLDIR/lib/gcc/$TARGET/${GCC_MAJOR_VERSION}/"
 # relocate libgcc_s
 mv $INSTALLDIR/lib/gcc/$TARGET/lib64/libgcc_s.so* "$INSTALLDIR/lib/gcc/$TARGET/${GCC_MAJOR_VERSION}/"
 rmdir "$INSTALLDIR/lib/gcc/$TARGET/lib64"
+
+
+$INSTALLDIR/bin/${target}-gcc -o ${BUILDDIR}/hello_c hello.c || exit 2
+$INSTALLDIR/bin/${target}-g++ -o ${BUILDDIR}/hello_cpp hello.cpp || exit 3
+
+gcc_runtime_libdir=`$INSTALLDIR/bin/${target}-gcc --print-libgcc-file-name`
+gcc_runtime_libdir="${gcc_runtime_libdir%/*}"
+
+env LD_LIBRARY_PATH=$INSTALLDIR${SYSROOT}/lib64:${gcc_runtime_libdir} \
+	qemu-${arch}-static -L ${INSTALLDIR}${SYSROOT} ${BUILDDIR}/hello_c || exit 5
+env LD_LIBRARY_PATH=$INSTALLDIR${SYSROOT}/lib64:${gcc_runtime_libdir} \
+	qemu-${arch}-static -L ${INSTALLDIR}${SYSROOT} ${BUILDDIR}/hello_cpp || exit 7
+

hello.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+	printf("Hello, %s!\n", argc > 1 ? argv[1] : "world");
+	return 0;
+}

hello.cpp

@@ -0,0 +1,6 @@
+#include <iostream>
+
+int main(int argc, char** argv) {
+	std::cout << "Hello, " << (argc > 1 ? argv[1] : "world") << '!' << std::endl;
+	return 0;
+}