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androidcandroid-ndkandroid.mk

Android can't include linux in C program with Android.mk

I'm trying to compile a C program for Android 6. This is my Android.mk:

APP_PLATFORM := android-23
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
# Enable PIE manually. Will get reset on $(CLEAR_VARS). This
# is what enabling PIE translates to behind the scenes.
LOCAL_CFLAGS += -fPIE -DHAVE_FANOTIFY=1 -DHAVE_SYS_FANOTIFY=0
LOCAL_LDFLAGS += -fPIE -pie
# give module name
LOCAL_MODULE := fsmon
# list your C files to compile
LOCAL_SRC_FILES := inotify.c fanotify.c util.c main.c
# this option will build executables instead of building library for android application.
include $(BUILD_EXECUTABLE)

In the fanotify.c following include is written:

#include <linux/fanotify.h>

When I try to use ndk-build, following error appears:

fsmon/jni/fanotify.c:51:10: fatal error: 'linux/fanotify.h' file not found
#include <linux/fanotify.h>
         ^

The header fanotify.h is present in the ndk path /Android/Sdk/ndk-bundle/sysroot/usr/include/linux

Any suggestions?

EDIT: Same error if I try to include sys/fanotify.h

Solution

  • You can specify additional include paths for your module using LOCAL_C_INCLUDES.

    LOCAL_C_INCLUDES := /Android/Sdk/ndk-bundle/sysroot/usr/include/

    https://developer.android.com/ndk/guides/android_mk.html#mdv