source: rtems/testsuites/aclocal/prog-cxx.m4 @ cf65bb00

dnl 
dnl Check for target g++
dnl 

AC_DEFUN([RTEMS_PROG_CXX_FOR_TARGET],
[
AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl
AC_REQUIRE([RTEMS_ENABLE_CXX])

# If CXXFLAGS is not set, default to CFLAGS
CXXFLAGS=${CXXFLAGS-${CFLAGS}}

RTEMS_CHECK_TOOL(CXX,g++)
if test "$RTEMS_HAS_CPLUSPLUS" = "yes";
then
dnl Only accept g++
dnl NOTE: This might be too restrictive
test -z "$CXX" \
  && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
AC_PROG_CXX
AC_PROG_CXXCPP

  if test "$ac_cv_prog_cc_cross" != "$ac_cv_prog_cxx_cross"; then
    AC_MSG_ERROR([***]
     [Inconsistency in compiler configuration:]
     [Target C compiler and target C++ compiler]
     [must both either be cross compilers or native compilers]
  fi
else
## Work-around to a bug in automake
AM_CONDITIONAL([am__fastdepCXX],[false])
fi
])