+# Disable libatomic on unsupported systems.
+if test -d ${srcdir}/libatomic; then
+ if test x$enable_libatomic = x; then
+ AC_MSG_CHECKING([for libatomic support])
+ if (srcdir=${srcdir}/libatomic; \
+ . ${srcdir}/configure.tgt; \
+ test -n "$UNSUPPORTED")
+ then
+ AC_MSG_RESULT([no])
+ noconfigdirs="$noconfigdirs target-libatomic"
+ else
+ AC_MSG_RESULT([yes])
+ fi
+ fi
+fi
+
+# Disable libcilkrts on unsupported systems.
+if test -d ${srcdir}/libcilkrts; then
+ if test x$enable_libcilkrts = x; then
+ AC_MSG_CHECKING([for libcilkrts support])
+ if (srcdir=${srcdir}/libcilkrts; \
+ . ${srcdir}/configure.tgt; \
+ test -n "$UNSUPPORTED")
+ then
+ AC_MSG_RESULT([no])
+ noconfigdirs="$noconfigdirs target-libcilkrts"
+ else
+ AC_MSG_RESULT([yes])
+ fi
+ fi
+fi
+
+# Disable libitm on unsupported systems.
+if test -d ${srcdir}/libitm; then
+ if test x$enable_libitm = x; then
+ AC_MSG_CHECKING([for libitm support])
+ if (srcdir=${srcdir}/libitm; \
+ . ${srcdir}/configure.tgt; \
+ test -n "$UNSUPPORTED")
+ then
+ AC_MSG_RESULT([no])
+ noconfigdirs="$noconfigdirs target-libitm"
+ else
+ AC_MSG_RESULT([yes])
+ fi
+ fi
+fi
+
+# Disable libsanitizer on unsupported systems.
+if test -d ${srcdir}/libsanitizer; then
+ if test x$enable_libsanitizer = x; then
+ AC_MSG_CHECKING([for libsanitizer support])
+ if (srcdir=${srcdir}/libsanitizer; \
+ . ${srcdir}/configure.tgt; \
+ test -n "$UNSUPPORTED")
+ then
+ AC_MSG_RESULT([no])
+ noconfigdirs="$noconfigdirs target-libsanitizer"
+ else
+ AC_MSG_RESULT([yes])
+ fi
+ fi
+fi
+
+# Disable libvtv on unsupported systems.
+if test -d ${srcdir}/libvtv; then
+ if test x$enable_libvtv = x; then
+ AC_MSG_CHECKING([for libvtv support])
+ if (srcdir=${srcdir}/libvtv; \
+ . ${srcdir}/configure.tgt; \
+ test "$VTV_SUPPORTED" != "yes")
+ then
+ AC_MSG_RESULT([no])
+ noconfigdirs="$noconfigdirs target-libvtv"
+ else
+ AC_MSG_RESULT([yes])
+ fi
+ fi
+fi
+
+# Disable libquadmath for some systems.
+case "${target}" in
+ avr-*-*)
+ noconfigdirs="$noconfigdirs target-libquadmath"
+ ;;
+ # libquadmath is unused on AIX and libquadmath build process use of
+ # LD_LIBRARY_PATH can break AIX bootstrap.
+ powerpc-*-aix* | rs6000-*-aix*)
+ noconfigdirs="$noconfigdirs target-libquadmath"
+ ;;
+esac
+