Mingw example makefile for console app and DLL

Here is a basic Makefile to use with mingw to compile some common types of windows binaries - a windows console app, a non-console 'windows' subsystem app, and a DLL.

# Example mingw makefile

TARGETNAME=myapp

CC = i586-mingw32msvc-gcc

# A basic windows app (won't bring up a console window)
CFLAGS = -Wall -O -Wl,--subsystem,windows

# for debugging make this a console app (so we can write to stdout/stderr) easily;
# turn off optimisations and include symbols to help with running in a debugger
CFLAGS_DEBUG = -Wall -O0 -g -Wl,--subsystem,console -DDEBUG

# Create a dll instead of an exe
CFLAGS_DLL = -Wall -O0 -g -shared -Wl,--subsystem,windows -DDLL

# Any libraries you need - in this case wininet for communicating to the internet
LIBS = -lwininet

# Strip the binary for our prod build
STRIP = i586-mingw32msvc-strip

# UPX pack to minimise size for our prod build
UPX=upx -9

# Leave symbols, turn off optimisation, and send output to console
debug: $(TARGETNAME).c
        $(CC) -o $(TARGETNAME)_dbg $(CFLAGS_DEBUG) $^ $(LIBS)

# No debug symbols, debug statements removed, subsystem windows means we won't pop a window
$(TARGETNAME): $(TARGETNAME).c
        $(CC) -o $@ $(CFLAGS) $^ $(LIBS)

$(TARGETNAME).dll: $(TARGETNAME).c
        $(CC) -o $@ $(CFLAGS_DLL) $^ $(LIBS)

release: $(TARGETNAME)
        $(STRIP) $<
        $(UPX) $<