Android NDK Makefile

(1) install NDK 1.6 in say
~/Android/android-ndk-1.6_r1

download http://developer.android.com/sdk/ndk/1.6_r1/index.html

(2) install SDK 1.6 in say
~/Android/android-sdk-linux_x86-1.6_r1

download http://developer.android.com/sdk/1.6_r1/index.html

(3) you can compile standalone C program like this hello.c using the Makefile below

#include <stdio.h>
int main() {
  printf("hello, NDK makefile world\n");
  return 0;
}


(4) Create Makefile

Makefile Select all


APP=hello

NDK_DIR := /cygdrive/c/Android/android-ndk-1.6_r1
#NDK_DIR := ~/Android/android-ndk-1.6_r1
NDK_HOST := windows
#NDK_HOST := linux-x86
#NDK_HOST := darwin-x86
SDKTOOL := /cygdrive/c/Android/android-sdk-windows-1.6_r1/tools
#SDKTOOL := ~/Android/android-sdk-linux_x86-1.6_r1/tools
#SDKTOOL := ~/Android/android-sdk-mac_x86-1.6_r1/tools

TOOLCHAIN_PREFIX := $(NDK_DIR)/build/prebuilt/$(NDK_HOST)/arm-eabi-4.2.1/bin/arm-eabi-
CC := $(TOOLCHAIN_PREFIX)gcc
CPP := $(TOOLCHAIN_PREFIX)g++
LD := $(CC)

COMMON_FLAGS := -mandroid -ffunction-sections -fdata-sections -Os -g --sysroot=$(NDK_DIR)/build/platforms/android-4/arch-arm \
-fPIC \
-fvisibility=hidden \
-D__NEW__

CFLAGS := $(COMMON_FLAGS)

CFLAGS += -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -DANDROID -DSK_RELEASE -DNDEBUG

CFLAGS += -UDEBUG -march=armv5te -mtune=xscale -msoft-float -mthumb-interwork -fpic -ffunction-sections -funwind-tables -fstack-protector -fmessage-length=0 -Bdynamic


CPPFLAGS := $(COMMON_FLAGS) \
-fno-rtti -fno-exceptions \
-fvisibility-inlines-hidden

LDFLAGS += --sysroot=$(NDK_DIR)/build/platforms/android-4/arch-arm
LDFLAGS += -Bdynamic -Wl,-dynamic-linker,/system/bin/linker -Wl,--gc-sections -Wl,-z,nocopyreloc
LDFLAGS += -L$(NDK_DIR)/build/prebuilt/$(NDK_HOST)/arm-eabi-4.2.1/lib/gcc/arm-eabi/4.2.1/android
LDFLAGS += -L$(NDK_DIR)/build/prebuilt/$(NDK_HOST)/arm-eabi-4.2.1/lib/gcc/arm-eabi/4.2.1
LDFLAGS += -L$(NDK_DIR)/build/prebuilt/$(NDK_HOST)/arm-eabi-4.2.1/lib/gcc
LDFLAGS += -L$(NDK_DIR)/build/prebuilt/$(NDK_HOST)/arm-eabi-4.2.1/arm-eabi/lib
LDFLAGS += -nostdlib -lc -llog -lgcc \
--no-undefined -z $(NDK_DIR)/build/platforms/android-4/arch-arm/usr/lib/crtbegin_dynamic.o $(NDK_DIR)/build/platforms/android-4/arch-arm/usr/lib/crtend_android.o

OBJS += $(APP).o

all: $(APP)

$(APP): $(OBJS)
$(LD) $(LDFLAGS) -o $@ $^

%.o: %.c
$(CC) -c $(CFLAGS) $< -o $@

%.o: %.cpp
$(CPP) -c $(CFLAGS) $(CPPFLAGS) $< -o $@

install: $(APP)
$(SDKTOOL)/adb push $(APP) /data/local/bin/$(APP)
$(SDKTOOL)/adb shell chmod 755 /data/local/bin/$(APP)

run:
$(SDKTOOL)/adb shell /data/local/bin/$(APP)

clean:
@rm -f $(APP).o $(APP)


(5) connect device and test using

make all
make install run


(6) compile C++ program example1.cpp (no STL)

make APP=example1 all install run


example1.cpp Select all


#include <stdio.h>

class counter {
public:
int some_data;
char some_other_data[100];
int i;

void increment_counter() {i++;}
void decrement_counter() {i--;}
int query_counter() {return i;}

void set_counter(int new_value);
};

void counter::set_counter(int new_value)
{
i = new_value;
}

main()
{
counter apples;
counter oranges;
counter *pointer_to_counter = NULL;
counter array_of_counters[10];
int x = 5;

apples.some_data = x;

apples.set_counter(10);
apples.increment_counter();
apples.increment_counter();

oranges.set_counter(5);
oranges.decrement_counter();

printf("%d apples and %d oranges\n",
apples.query_counter(),
oranges.query_counter());
}