Makefile++

Makefile

@@ -1,5 +1,5 @@
 PREFIX=/usr/local
-TARGET=posix
+TARGET=$(shell uname|tr '[A-Z]' '[a-z]')$(shell getconf LONG_BIT)
 INCLUDE=
 LIBDIRS=
 LIBS=
@@ -25,30 +25,49 @@ OBJ=\
 CC=gcc
 LD=$(CC)
 COMMON_CFLAGS=-Wall -Werror -Wextra -std=gnu99 -O2 -g $(INCLUDE) $(LIBDIRS) -D_FILE_OFFSET_BITS=64
-CFLAGS=$(COMMON_CFLAGS) -pedantic
+POSIX_CFLAGS=$(COMMON_CFLAGS) -pedantic
+CFLAGS=$(POSIX_CFLAGS)
+WINDOWS_CFLAGS=$(COMMON_CFLAGS) -DWINVER=0x500
+WINDOWS_LIBS=-lws2_32 -liberty
 APPNAME=audioextract
 BIN=$(BUILDDIR)/$(APPNAME)
 
 ifeq ($(TARGET),win32)
 	PLATFORM=windows
 	CC=i686-pc-mingw32-gcc
-	CFLAGS=$(COMMON_CFLAGS) -m32 -DWINVER=0x500
-	LIBS=-lws2_32 -liberty
+	CFLAGS=$(WINDOWS_CFLAGS) -m32
+	LDFLAGS=-m32
+	LIBS=$(WINDOWS_LIBS)
 	APPNAME=audioextract.exe
 else
 ifeq ($(TARGET),win64)
 	PLATFORM=windows
 	CC=x86_64-w64-mingw32-gcc
-	CFLAGS=$(COMMON_CFLAGS) -m64 -DWINVER=0x500
-	LIBS=-lws2_32 -liberty
-	APPNAME=audioextract64.exe
+	CFLAGS=$(WINDOWS_CFLAGS) -m64
+	LDFLAGS=-m64
+	LIBS=$(WINDOWS_LIBS)
+else
+ifeq ($(TARGET),linux32)
+	CFLAGS=$(POSIX_CFLAGS) -m32
+	LDFLAGS=-m32
+else
+ifeq ($(TARGET),linux64)
+	CFLAGS=$(POSIX_CFLAGS) -m64
+	LDFLAGS=-m64
+endif
+endif
 endif
 endif
 
-.PHONY: all clean install uninstall
+.PHONY: all clean install uninstall builddir
 
 all: $(BIN)
 
+builddir: $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)
+
 $(BIN): $(OBJ)
 	$(LD) $(LIBDIRS) $(LDFLAGS) $(OBJ) -o $@ $(LIBS)
 

README.md

@@ -6,18 +6,18 @@ Extract audio files that are embedded within other files.
 Setup
 -----
 
-	mkdir build-posix
+	make builddir
 	make
 	make install PREFIX=/usr
 
-Cross compile for Windows:
+Cross compile for Windows (uses `i686-pc-mingw32-gcc`):
 
-	mkdir build-win32
+	make TARGET=win32 builddir
 	make TARGET=win32
 
-Or:
+Or (uses `x86_64-w64-mingw32-gcc`):
 
-	mkdir build-win64
+	make TARGET=win64 builddir
 	make TARGET=win64
 
 **NOTE:** 32bit binaries can only process 2 GB of a file at once. The rest of
@@ -28,8 +28,8 @@ This also means that using a 32bit binary extracted files can never be larger
 than 2 GB.
 
 This is because `audioextract` uses `mmap` to read files, wich maps files to
-memory. On 32bit the address space of the main memory is simply not big enough.
-64bit binaries can read up to 8 EB (8 Exabytes) at once.
+memory. On 32bit platforms the address space of the main memory is simply not
+big enough. 64bit binaries can read up to 8 EB (8 Exabytes) at once.
 
 Usage
 -----