Added Readme.md and license. Updated Makefile so that it creates the

required output directories. Added resource file for executable.

.gitignore

@@ -1,5 +1,4 @@
 # Ignore compiled binaries
+/bin/
+/lib/
 /obj/
-*.exe
-*.dll
-*.a

License.txt

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

Makefile

@@ -1,15 +1,57 @@
-# This Makefile will build a DLL and an application using the DLL.
+# This Makefile will build a DLL and an application which makes use of the DLL.
 
-all: AddLib.dll AddTest.exe
+# Object files to create for the executable
+DLL_OBJS = obj/add.o obj/dllres.o
+EXE_OBJS = obj/addtest.o obj/exeres.o
 
-AddLib.dll: include/add.h
-	gcc -O3 -std=c99 -D ADD_EXPORTS -Wall -I.\include -c src/add.c -o obj/add.o
-	windres -i res/resource.rc -o obj/resource.o
-	gcc -o AddLib.dll obj/add.o obj/resource.o -shared -s -Wl,--subsystem,windows,--out-implib,libaddlib.a
+# Warnings to be raised by the C compiler
+WARNS = -Wall
 
-AddTest.exe: include/add.h AddLib.dll
-	gcc -O3 -std=c99 -Wall -I.\include -c src/addtest.c -o obj/addtest.o
-	gcc -o AddTest.exe obj/addtest.o -s -L. -lAddLib
+# Names of tools to use when building
+CC = gcc
+RC = windres
+EXE = AddTest.exe
+DLL = AddLib.dll
 
+# Compiler flags
+EXE_CFLAGS = -O2 -std=c99 ${WARNS} -Iinclude
+DLL_CFLAGS = ${EXE_CFLAGS} -D ADD_EXPORTS
+
+# Linker flags
+DLL_LDFLAGS = -shared -s -Wl,--subsystem,windows,--out-implib,lib/libaddlib.a
+EXE_LDFLAGS = -Llib -laddlib -s -Wl,--subsystem,console
+
+.PHONY: all clean
+
+# Build DLL and executable by default
+all: bin/${DLL} bin/${EXE}
+
+# Delete all build output
 clean:
-	del obj\*.o *.exe *.dll *.a
+	if exist bin\* del /q bin\*
+	if exist lib\* del /q lib\*
+	if exist obj\* del /q obj\*
+
+# Create build output directories if they don't exist
+bin lib obj:
+	@if not exist "$@" mkdir "$@"
+
+# Compile object files for DLL
+obj/add.o: src/add.c include/add.h | obj
+	${CC} ${DLL_CFLAGS} -c "$<" -o "$@"
+
+# Compile object files for executable
+obj/addtest.o: src/addtest.c include/add.h | obj
+	${CC} ${EXE_CFLAGS} -c "$<" -o "$@"
+
+# Build the resource files
+obj/%.o: res/%.rc | obj
+	${RC} -Iinclude -Ires -i "$<" -o "$@"
+
+# Build the DLL
+bin/${DLL}: ${DLL_OBJS} | bin lib
+	${CC} -o "$@" ${DLL_OBJS} ${DLL_LDFLAGS}
+
+# Buld the executable
+bin/${EXE}: ${EXE_OBJS} | bin
+	${CC} -o "$@" ${EXE_OBJS} ${EXE_LDFLAGS}

Readme.md

@@ -0,0 +1,47 @@
+# MinGW DLL Example
+
+## Table of Contents
+
+- [Introduction](#introduction)
+- [Terms of Use](#terms-of-use)
+- [Problems?](#problems)
+- [Changelog](#changelog)
+
+## Introduction
+
+This is an example Win32 DLL and console application. It is intended to demonstrate how to build DLLs using MinGW, and
+utilise their functionality within a client application. It accompanies the
+[Building Windows DLLs with MinGW](http://www.transmissionzero.co.uk/computing/building-dlls-with-mingw/) article.
+
+To build the application on a Windows machine, extract the contents of this archive to a folder on your computer. Open a
+command prompt, change to the directory where you extracted the files, and type "mingw32-make". The DLL and executable
+should be compiled, linked, and output as "AddLib.dll" and "AddTest.exe" in the "bin" directory. The import library will
+be created as "libaddlib.a" in the "lib" directory.
+
+To build under another operating system, the Makefile will probably require some small changes. For example, under
+Fedora the 32 bit C compiler and resource compiler are named "i686-w64-mingw32-gcc" and "i686-w64-mingw32-windres".
+Also, your version of the make utility may be named differently--please check the documentation which came with your
+MinGW packages.
+
+## Terms of Use
+
+Refer to "License.txt" for terms of use.
+
+## Problems?
+
+If you have any problems or questions, please ensure you have read this readme
+file and the
+[Building Windows DLLs with MinGW](http://www.transmissionzero.co.uk/computing/building-dlls-with-mingw/)
+article. If you are still having trouble, you can
+[get in contact](http://www.transmissionzero.co.uk/contact/).
+
+## Changelog
+
+2. 2013-08-26: Version 1.1
+   - Minor tweaks to the VERSIONINFO resource so that it uses constants rather than magic numbers.
+
+1. 2011-04-16: Version 1.0
+   - First release.
+
+Transmission Zero
+2017-11-10

res/resource.rc → res/dllres.rc

@@ -22,7 +22,7 @@ BEGIN
       VALUE "FileDescription", "A library to perform addition."
       VALUE "FileVersion", "1.0.0.0"
       VALUE "InternalName", "AddLib"
-      VALUE "LegalCopyright", "�2013 Transmission Zero"
+      VALUE "LegalCopyright", "�2017 Transmission Zero"
       VALUE "OriginalFilename", "AddLib.dll"
       VALUE "ProductName", "Addition Library"
       VALUE "ProductVersion", "1.0.0.0"

res/exeres.rc

@@ -0,0 +1,35 @@
+#include <windows.h>
+
+// DLL version information.
+VS_VERSION_INFO    VERSIONINFO
+FILEVERSION        1,0,0,0
+PRODUCTVERSION     1,0,0,0
+FILEFLAGSMASK      VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+  FILEFLAGS        VS_FF_DEBUG | VS_FF_PRERELEASE
+#else
+  FILEFLAGS        0
+#endif
+FILEOS             VOS_NT_WINDOWS32
+FILETYPE           VFT_APP
+FILESUBTYPE        VFT2_UNKNOWN
+BEGIN
+  BLOCK "StringFileInfo"
+  BEGIN
+    BLOCK "080904b0"
+    BEGIN
+      VALUE "CompanyName", "Transmission Zero"
+      VALUE "FileDescription", "Application which uses the Addition Library."
+      VALUE "FileVersion", "1.0.0.0"
+      VALUE "InternalName", "AddTest"
+      VALUE "LegalCopyright", "�2017 Transmission Zero"
+      VALUE "OriginalFilename", "AddTest.exe"
+      VALUE "ProductName", "Addition Test"
+      VALUE "ProductVersion", "1.0.0.0"
+    END
+  END
+  BLOCK "VarFileInfo"
+  BEGIN
+    VALUE "Translation", 0x809, 1200
+  END
+END