Android, C++, C4droid, and makefiles

Make files are a complete programming language in themselves.

There are automatic rules in place that know .o files are generated from their source files. Just add the new .o file to the list of dependencies and the magic should happen.

Details for make and how the rules work are available in the documentation.

This is an Android.mk makefile taken from the NATIVE_ACTIVITY.HTML help doc:

8/ Create an Android.mk file in the jni/ directory of your project to describe your native module
to the build system. An Android.mk file is essentially a snippet of a GNU Make file. For
example:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := my_native_module
LOCAL_SRC_FILES := my_native_code.c
include $(BUILD_SHARED_LIBRARY)


To add more .c or .cpp files, you can add them to the LOCAL_SRC_FILES section like so:

LOCAL_SRC_FILES := my_native_code.c my_native_code_2.c my_native_code_3.c my_native_code_N.c


OR like so:

LOCAL_SRC_FILES := my_native_code.c \
my_native_code_2.c \
my_native_code_3.c \
my_native_code_N.c




There's also the "wildcard" keyword so you can avoid listing all the files manually:

http://stackoverflow.com/questions/8350878/using-makes-wildcard-function-in-android-mk


Hope this helps!

This is an Android.mk makefile taken from the NATIVE_ACTIVITY.HTML help doc:

How did I not go and find that? *faceplam*

Two beaut answers guys thank you!

Hope this style of makefile compiles with C4Droid, I shall try it out!

I cant seem to make the magic happen within c4droid, could somebody show me how to extend the makefile i've put above, just to include another .h and .cpp?

I did try on Mint and managed to compile a .cpp and its .h, which was cool however I didnt have a LOCAL_SOURCE_FILES field..

Sorry to be picky / a git.

Thanks!