if [ $cc_version -ge 43 ]; then

			# Use gnu++0x mode so static_assert() is available.

			# Don't use c++0x, it breaks mingw (with gcc 4.4.0).

			cxxflags="$cxxflags -std=gnu++0x"

		fi

		if [ $cc_version -ge 47 ]; then

			# Disable -Wnarrowing which gives many warnings, such as:

			# warning: narrowing conversion of '...' from 'unsigned int' to 'int' inside { } [-Wnarrowing]

			# They are valid according to the C++ standard, but useless.

			cxxflags="$cxxflags -Wno-narrowing"

		fi

		if [ "$enable_lto" != "0" ]; then

			# GCC 4.5 outputs '%{flto}', GCC 4.6 outputs '%{flto*}'

			has_lto=`$1 -dumpspecs | grep '\%{flto'`

			if [ -n "$has_lto" ]; then

				# Use LTO only if we see LTO exists and is requested

				if [ $cc_version -lt 46 ]; then

					flags="$flags -flto"

				else

					flags="$flags -flto=jobserver"

				fi

Tycoon Deluxe graphics you need GRFCodec (which includes NFORenum) as well.

GRFCodec can be found at: http://www.openttd.org/download-grfcodec

The compilation of these extra graphics does generally not happen, unless

you remove the graphics file using "make maintainer-clean".

7.2) Supported compilers

---- -------------------

The following compilers are known to compile OpenTTD:

  - Microsoft Visual C++ (MSVC) 2005, 2008 and 2010.

    Version 2005 gives bogus warnings about scoping issues.

  - GNU Compiler Collection (GCC) 3.3 - 4.7.

    Versions 4.1 and earlier give bogus warnings about uninitialised variables.

    Versions 4.5 and later give invalid warnings when lto is enabled.

  - Intel C++ Compiler (ICC) 12.0.

The following compilers are known not to compile OpenTTD:

  - Microsoft Visual C++ (MSVC) 2003 and earlier.

  - GNU Compiler Collection (GCC) 3.2 and earlier.

    These old versions fail due to OpenTTD's template usage.

  - Intel C++ Compiler (ICC) 11.1 and earlier.

    Version 10.0 and earlier fail a configure check and fail with recent system

        headers.

    Version 10.1 fails to compile station_gui.cpp.

    Version 11.1 fails with internal error when compiling network.cpp.