where is the interface header file of HIDL in AOSP?












0















I studied the HIDL using Nfc code in AOSP .



As i know, when INfc.hal is compiled, INfc.h is autogenerated like following picture.
enter image description here



In NxpService.cpp, there is code like following



#include <android/hardware/nfc/1.1/INfc.h>


But, I couldn't find that path.
where is the real path of android/hardware/nfc/1.1/INfc.h?



In addition, I became curious how gcc compile works in NxpService.cpp that uses INfc.h.
Could you explain how gcc compiler can find INfc.h and work without compile error?



INfc.hal
Path: /hardware/interfaces/nfc/1.1/INfc.hal



Android.bp



hidl_interface {
name: "android.hardware.nfc@1.1",
root: "android.hardware",


NxpService.cpp
Path: /hardware/nxp/nfc/1.1/NxpService.cpp



#include <android/hardware/nfc/1.1/INfc.h>  
...
int main(){
sp<INfc> nfc_service = new Nfc();
status_t status = nfc_service->registerAsService();









share|improve this question























  • What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

    – Chris Stratton
    Jan 6 at 8:00


















0















I studied the HIDL using Nfc code in AOSP .



As i know, when INfc.hal is compiled, INfc.h is autogenerated like following picture.
enter image description here



In NxpService.cpp, there is code like following



#include <android/hardware/nfc/1.1/INfc.h>


But, I couldn't find that path.
where is the real path of android/hardware/nfc/1.1/INfc.h?



In addition, I became curious how gcc compile works in NxpService.cpp that uses INfc.h.
Could you explain how gcc compiler can find INfc.h and work without compile error?



INfc.hal
Path: /hardware/interfaces/nfc/1.1/INfc.hal



Android.bp



hidl_interface {
name: "android.hardware.nfc@1.1",
root: "android.hardware",


NxpService.cpp
Path: /hardware/nxp/nfc/1.1/NxpService.cpp



#include <android/hardware/nfc/1.1/INfc.h>  
...
int main(){
sp<INfc> nfc_service = new Nfc();
status_t status = nfc_service->registerAsService();









share|improve this question























  • What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

    – Chris Stratton
    Jan 6 at 8:00
















0












0








0








I studied the HIDL using Nfc code in AOSP .



As i know, when INfc.hal is compiled, INfc.h is autogenerated like following picture.
enter image description here



In NxpService.cpp, there is code like following



#include <android/hardware/nfc/1.1/INfc.h>


But, I couldn't find that path.
where is the real path of android/hardware/nfc/1.1/INfc.h?



In addition, I became curious how gcc compile works in NxpService.cpp that uses INfc.h.
Could you explain how gcc compiler can find INfc.h and work without compile error?



INfc.hal
Path: /hardware/interfaces/nfc/1.1/INfc.hal



Android.bp



hidl_interface {
name: "android.hardware.nfc@1.1",
root: "android.hardware",


NxpService.cpp
Path: /hardware/nxp/nfc/1.1/NxpService.cpp



#include <android/hardware/nfc/1.1/INfc.h>  
...
int main(){
sp<INfc> nfc_service = new Nfc();
status_t status = nfc_service->registerAsService();









share|improve this question














I studied the HIDL using Nfc code in AOSP .



As i know, when INfc.hal is compiled, INfc.h is autogenerated like following picture.
enter image description here



In NxpService.cpp, there is code like following



#include <android/hardware/nfc/1.1/INfc.h>


But, I couldn't find that path.
where is the real path of android/hardware/nfc/1.1/INfc.h?



In addition, I became curious how gcc compile works in NxpService.cpp that uses INfc.h.
Could you explain how gcc compiler can find INfc.h and work without compile error?



INfc.hal
Path: /hardware/interfaces/nfc/1.1/INfc.hal



Android.bp



hidl_interface {
name: "android.hardware.nfc@1.1",
root: "android.hardware",


NxpService.cpp
Path: /hardware/nxp/nfc/1.1/NxpService.cpp



#include <android/hardware/nfc/1.1/INfc.h>  
...
int main(){
sp<INfc> nfc_service = new Nfc();
status_t status = nfc_service->registerAsService();






gcc android-source hal






share|improve this question













share|improve this question











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asked Jan 2 at 22:47









bongsubongsu

356




356













  • What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

    – Chris Stratton
    Jan 6 at 8:00





















  • What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

    – Chris Stratton
    Jan 6 at 8:00



















What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

– Chris Stratton
Jan 6 at 8:00







What are you actually trying to do here? Find the file to examine it? Just search for it. Or learn how to set compiler flags when building your project and accomplish the equivalent of this method of getting the compiler to output such information: stackoverflow.com/questions/11946294/dump-include-paths-from-g

– Chris Stratton
Jan 6 at 8:00














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