If you are building android in ubuntu >10.04 you are gonna get this awesome error:
:0:0: warning: “_FORTIFY_SOURCE” redefined [enabled by default]
:0:0: note: this is the location of the previous definition
frameworks/base/libs/utils/RefBase.cpp: In member function ‘void android::RefBase::weakref_type::trackMe(bool, bool)’:
frameworks/base/libs/utils/RefBase.cpp:483:67: error: passing ‘const android::RefBase::weakref_impl’ as ‘this’ argument of ‘void android::RefBase::weakref_impl::trackMe(bool, bool)’ discards qualifiers [-fpermissive]
make: *** [out/host/linux-x86/obj/STATIC_LIBRARIES/libutils_intermediates/RefBase.o] Error 1
Like the error itself tell us, the fix is to add the flag fpermissive, so let’s editframeworks/base/libs/utils/Android.mk and change:
LOCAL_CFLAGS += -DLIBUTILS_NATIVE=1 $(TOOL_CFLAGS)
to
LOCAL_CFLAGS += -DLIBUTILS_NATIVE=1 $(TOOL_CFLAGS) -fpermissive
And let the compiler do its job.
ERROR#1Firstly need to enable to build android on a 32-bit system. Otherwise, you will see the following error message immediately when you start to build the source tree.
************************************************************
You are attempting to build on a 32-bit system.
Only 64-bit build environments are supported beyond froyo/2.2.
************************************************************
modify following files.
external/clearsilver/java-jni/Android.mk
external/clearsilver/util/Android.mk
external/clearsilver/cgi/Android.mk
external/clearsilver/cs/Android.mk
Find all lines of
LOCAL_CFLAGS += -m64
or
LOCAL_LDFLAGS += -m64
Change then with
LOCAL_CFLAGS += -m
32or
LOCAL_LDFLAGS += -m
32Need also change all lines in build/core/main.mk
ifneq (64,$(findstring 64,$(build_arch)))
to
ifneq (
i686,$(findstring
i686,$(build_arch)))
too.
ERROR#2host C++: libutils <= frameworks/base/libs/utils/RefBase.cpp
frameworks/base/libs/utils/RefBase.cpp: In member function ‘void android::RefBase::weakref_type::trackMe(bool, bool)’:
frameworks/base/libs/utils/RefBase.cpp:483:67: error: passing ‘const android::RefBase::weakref_impl’ as ‘this’ argument of ‘void android::RefBase::weakref_impl::trackMe(bool, bool)’ discards qualifiers [-fpermissive]
make: *** [out/host/linux-x86/obj/STATIC_LIBRARIES/libutils_intermediates/RefBase.o] Error 1
With file
frameworks/base/libs/utils/Android.mk
Change the line:
LOCAL_CFLAGS += -DLIBUTILS_NATIVE=1 $(TOOL_CFLAGS)
To:
LOCAL_CFLAGS += -DLIBUTILS_NATIVE=1 $(TOOL_CFLAGS)
-fpermissiveERROR#3host C++: obbtool <= frameworks/base/tools/obbtool/Main.cpp
:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
:0:0: note: this is the location of the previous definition
cc1plus: all warnings being treated as errors
make: *** [out/host/linux-x86/obj/EXECUTABLES/obbtool_intermediates/Main.o] Error 1
To fix this, refer to this patch.
https://github.com/CyanogenMod/android_build/commit/e9cbfa60c8dd60d04570d8bf7bd0d54a4304baf5
It will patch line 61 in /build/core/combo/HOST_linux-x86.mk as following.
-HOST_GLOBAL_CFLAGS += -D_FORTIFY_SOURCE=0
+HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
