-gxx_include_dir=
-if test -n "${with_gxx_include_dir}"; then
- case "${with_gxx_include_dir}" in
- yes )
- echo "configure.in: error: bad value ${withval} given for g++ include directory" 1>&2
- exit 1
- ;;
- no )
- ;;
- * )
- gxx_include_dir=${with_gxx_include_dir}
- ;;
- esac
-fi
-if test x${gxx_include_dir} = x; then
- if test x${enable_version_specific_runtime_libs} = xyes; then
- gxx_include_dir='${libsubdir}/include/c++'
- else
- . ${srcdir}/config.if
- gxx_include_dir='${prefix}/include/${libstdcxx_incdir}'
- fi
-else
- gxx_include_dir=${gxx_include_dir}
-fi
+case "${with_gxx_include_dir}" in
+ yes)
+ AC_MSG_ERROR([--with-gxx-include-dir=[[dir]] requires a directory])
+ ;;
+ no | "")
+ case "${enable_version_specific_runtime_libs}" in
+ yes) gxx_include_dir='${libsubdir}/include/c++' ;;
+ *)
+ . ${srcdir}/config.if
+ gxx_include_dir='${prefix}/include/'${libstdcxx_incdir} ;;
+ esac ;;
+ *) gxx_include_dir=${with_gxx_include_dir} ;;
+esac