[Gc] Re: gc 7.4.0 on Android

Ivan Maidanski ivmai at mail.ru
Wed Dec 4 00:51:55 PST 2013

 Hi Manuel,

1. please check you NDK, it should have link.h file.

2. dynamic register is not working on Android (looks like the condition "tag == DT_DEBUG" is never satisfied on bionic), so you just skip the code by -D IGNORE_DYNAMIC_LOADING. I use a workaround (works only on ARM platform) - insert GC_INIT() call into initialization code of each dynamicakky loaded library.


Wed,  4 Dec 2013, 8:51 +01:00 from Manuel.Serrano at inria.fr:
>Hi everyone,
>I have tried to compile the GC version 7.4.0 on Android but it has failed with 
>the following error message. I'm using the NDK version r8e and the eclair
>version of bionic.
>libtool: compile:  /users/serrano/android/bigloo4.1a/arch/android/droid-gcc -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -O3 -fdata-sections -ffunction-sections -DBGL_ANDROID -DPLATFORM_ANDROID -DFINALIZE_ON_DEMAND -I/users/serrano/android/bigloo4.1a/lib/4.1a -fPIC -MT dyn_load.lo -MD -MP -MF .deps/dyn_load.Tpo -c dyn_load.c  -fPIC -DPIC -o .libs/dyn_load.o
>dyn_load.c:111:21: error: link.h: No such file or directory
>dyn_load.c:432: warning: 'struct dl_phdr_info' declared inside parameter list
>Makefile-gc-7.4.0:13: recipe for target 'boot-gc' failed
>make[1]: *** [boot-gc] Error 2
>Makefile:165: recipe for target 'boot' failed
>make: *** [boot] Error 2
>Line 112 of dyn_load.c there is this guard
>#   if !defined(GC_DONT_DEFINE_LINK_MAP)
>but I don't see any piece of code that could potentially defines 
>GC_DONT_DEFINE_LINK_MAP. Hence I'm not sure about what to do. I will be glad
>to help. Just tell me what you would like me to try.
>Thanks in advance for your help.
>ps: For your information, I have never been able to have an operational GC
>on Android that supports dynamic loading and multithreading. Using only
>multithreading works like a charm but multithreading+dynamic loading crashes
>for me all the time.

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