Update toolchain file

Author: alemart

src/misc/toolchain-mingw.cmake

@@ -1,33 +1,35 @@
-# ------------------------------------------------------------------------------
+# --------------------------
 # Cross-compiling with MinGW
-# ------------------------------------------------------------------------------
-# Use the commands below to build the Windows version of Open Surge with MinGW:
+# --------------------------
+# Use the commands below to build the 32-bit Windows version of Open Surge with MinGW:
 #
-#   $ mkdir build && cd build
-#   $ cmake .. \
+#     mkdir build && cd build
+#     cmake .. \
 #         -DCMAKE_TOOLCHAIN_FILE=../src/misc/toolchain-mingw.cmake
-#   $ make && sudo make install
+#     make && sudo make install
 #
 # This is for cross-compiling only.
-# ------------------------------------------------------------------------------
 
 # Set the system name
 set(CMAKE_SYSTEM_NAME Windows)
 
+# Set the target architecture
+set(CMAKE_SYSTEM_PROCESSOR X86)
+
 # Set the location of the C compiler and of the target environment (MINGDIR)
 # The paths below are taken from the Allegro 5 build system; if MinGW isn't
 # found automatically in your system, please adjust the paths manually:
-if(EXISTS /usr/i586-mingw32msvc)
-    set(CMAKE_C_COMPILER i586-mingw32msvc-gcc)
-    set(CMAKE_CXX_COMPILER i586-mingw32msvc-g++)
-    set(CMAKE_RC_COMPILER i586-mingw32msvc-windres)
-    set(CMAKE_FIND_ROOT_PATH /usr/i586-mingw32msvc)
-elseif(EXISTS /usr/i686-w64-mingw32)
+if(EXISTS /usr/i686-w64-mingw32)
     set(CMAKE_C_COMPILER i686-w64-mingw32-gcc)
     set(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)
     set(CMAKE_RC_COMPILER i686-w64-mingw32-windres)
     set(CMAKE_FIND_ROOT_PATH /usr/i686-w64-mingw32)
     set(CMAKE_AR:FILEPATH /usr/bin/i686-w64-mingw32-ar)
+elseif(EXISTS /usr/i586-mingw32msvc)
+    set(CMAKE_C_COMPILER i586-mingw32msvc-gcc)
+    set(CMAKE_CXX_COMPILER i586-mingw32msvc-g++)
+    set(CMAKE_RC_COMPILER i586-mingw32msvc-windres)
+    set(CMAKE_FIND_ROOT_PATH /usr/i586-mingw32msvc)
 elseif(EXISTS /opt/mingw)
     set(CMAKE_C_COMPILER /opt/mingw/usr/bin/i686-pc-mingw32-gcc)
     set(CMAKE_CXX_COMPILER /opt/mingw/usr/bin/i686-pc-mingw32-g++)