Add cross-compile support

Makefile.am

@@ -27,3 +27,20 @@ clean-local:
 # First target made
 BUILT_SOURCES = language-data.cpp graph.cpp
 
+#############################
+# Platform specific setup
+#############################
+windres_prefix=""
+if MINGW 
+hyperrogue_SOURCES += hyper.res
+hyperrogue_CPPFLAGS += ${wincppflags}
+#hyperrogue_LDFLAGS = "-static-libgcc -static-libstdc++"
+windres_prefix += "${host_cpu}-w64-mingw32-"
+
+endif MINGW
+
+#############################
+# Arch specific setup
+#############################
+hyper.res: hyper.rc hr-icon.ico
+	${windres_prefix}windres hyper.rc -O coff -o hyper.res

configure.ac

@@ -11,24 +11,35 @@ AC_CONFIG_SRCDIR([hyperpoint.cpp])
 AC_PROG_CXX
 AC_PROG_CC
 
+# Check for which host we are on and setup a few things
+# specifically based on the host
+AC_CANONICAL_HOST
+AM_CONDITIONAL(DARWIN, test ["${host_os#*darwin}" != "$host_os"])
+
+AM_CONDITIONAL(LINUX, test ["${host_os#*linux}" != "$host_os"])
+
+AM_CONDITIONAL(MINGW, test ["${host_os#*mingw}" != "$host_os"])
+export wincppflags=""
+AS_IF( test ["${host_os#*mingw}" != "$host_os"], [export EXEEXT=".exe"],[])
+
 # Checks for libraries.
 # FIXME: Replace `main' with a function in `-lGL':
-AC_CHECK_LIB([GL], [main], [], [AC_MSG_ERROR([GL library was not found])])
+AC_CHECK_LIB([GL], [main], [], AC_MSG_ERROR([GL library was not found]))
 # FIXME: Replace `main' with a function in `-lSDL':
-AC_CHECK_LIB([SDL], [main], [], [AC_MSG_ERROR([SDL library was not found])])
-# FIXME: Replace `main' with a function in `-lSDL_gfx':
-AC_CHECK_LIB([SDL_gfx], [main], [], [AC_MSG_ERROR([SDL_gfx library was not found])])
+AC_CHECK_LIB([SDL], [main], [], AC_MSG_ERROR([SDL library was not found]))
 # FIXME: Replace `main' with a function in `-lSDL_mixer':
-AC_CHECK_LIB([SDL_mixer], [main], [], [AC_MSG_ERROR([SDL_mixer library was not found])])
+AC_CHECK_LIB([SDL_mixer], [main], [], AC_MSG_ERROR([SDL_mixer library was not found]))
+# FIXME: Replace `main' with a function in `-lSDL_gfx':
+AC_CHECK_LIB([SDL_gfx], [main], [], [AS_IF( test ["${host_os#*mingw}" != "$host_os"], [export wincppflags=$wincppflags" dll/SDL_gfx.dll" && AC_MSG_RESULT([Building for windows, ignoring])] ,AC_MSG_ERROR([SDL_gfx library was not found]))])
 # FIXME: Replace `main' with a function in `-lSDL_ttf':
-AC_CHECK_LIB([SDL_ttf], [main], [], [AC_MSG_ERROR([SDL_ttf library was not found])])
+AC_CHECK_LIB([SDL_ttf], [main], [], [AS_IF( test ["${host_os#*mingw}" != "$host_os"], [export wincppflags=$wincppflags" dll/SDL_ttf.dll" && AC_MSG_RESULT([Building for windows, ignoring])] ,AC_MSG_ERROR([SDL_ttf library was not found]))])
 
 # Checks for header files.
 AC_CHECK_HEADERS([stdlib.h unistd.h])
-AC_CHECK_HEADERS([SDL/SDL.h], [], [AC_MSG_ERROR([SDL/SDL.h header was not found])])
+AC_CHECK_HEADERS([SDL/SDL.h], [], AC_MSG_ERROR([SDL/SDL.h header was not found]))
 #AC_CHECK_HEADERS([SDL/SDL_gfx.h], [], [AC_MSG_ERROR([SDL/SDL_gfx.h header was not found])])
-AC_CHECK_HEADERS([SDL/SDL_mixer.h], [], [AC_MSG_ERROR([SDL/SDL_mixer.h header was not found])])
-AC_CHECK_HEADERS([SDL/SDL_ttf.h], [], [AC_MSG_ERROR([SDL/SDL_ttf.h header was not found])])
+AC_CHECK_HEADERS([SDL/SDL_mixer.h], [], AC_MSG_ERROR([SDL/SDL_mixer.h header was not found]))
+AC_CHECK_HEADERS([SDL/SDL_ttf.h], [], AS_IF( test ["${host_os#*mingw}" != "$host_os"], [] ,AC_MSG_ERROR([SDL/SDL_ttf.h header was not found])))
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_CHECK_HEADER_STDBOOL
@@ -38,23 +49,7 @@ AC_TYPE_SIZE_T
 # Checks for library functions.
 AC_CHECK_FUNCS([memset sqrt strstr])
 
-#############################
-# Platform specific setup
-#############################
-AC_CANONICAL_HOST
-# Check for which host we are on and setup a few things
-# specifically based on the host
-case $host_os in
-  darwin* )
-        SYSTEM=DARWIN
-        ;;
-  linux*)
-        SYSTEM=LINUX
-        ;;
-   *mingw*)
-        SYSTEM=MINGW
-        ;;
-esac
+AC_SUBST([wincppflags])
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT