[llvm-dev] Cross-compile Android

[Wehrli Johan via llvm-dev]

Hi all,

I have a question about the cross-compilation on an Android application.

I try to compile the open-source application ChatSecureAndroid (https://github.com/guardianproject/ChatSecureAndroid) with the last clang and the following parameter : --sysroot=/Users/users/Library/Android/ndk/platforms/android-19/arch-arm/ -target armv7-a-none-linux-androideabi

During the link I get the following error multiple time : 

`.text._ZN7android12SharedBuffer14bufferFromDataEPv' referenced in section `.data.rel.ro' of /Users/jowehrli/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/String8.o: defined in discarded section `.text._ZN7android12SharedBuffer14bufferFromDataEPv[_ZN7android12SharedBuffer14bufferFromDataEPv]' of /Users/jowehrli/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/String8.o

It seem that every function is put into a section (in order to optimise the code size) with the argument -ffunction-section.

When I try to compile without it, the result is the same.

Does someone have any ideas?

Greetings,

Johan

PS : This is the line used for the linking process :

/Users/users/Code/build/llvm3.7/bin/clang++ -Wl,-soname,libsqlcipher_android.so -shared --sysroot=/Users/users/Library/Android/ndk/platforms/android-3/arch-arm /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/android-sqlite/android/sqlite3_android.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/android-sqlite/android/PhonebookIndex.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/android-sqlite/android/PhoneNumberUtils.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/android-sqlite/android/OldPhoneNumberUtils.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/android-sqlite/android/PhoneticStringUtils.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/String16.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/objs/sqlcipher_android/String8.o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/libsqlcipher.a /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/libicui18n.a /Users/users/Code/src/original/android-database-sqlcipher/external/android-libs/armeabi/libcrypto.a /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/libicuuc.a -lgcc /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/libstlport_shared.so  -gcc-toolchain /Users/users/Library/Android/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64 -no-canonical-prefixes -target armv5te-none-linux-androideabi -fuse-ld=gold -fuse-ld=bfd -L/Users/users/Code/src/original/android-database-sqlcipher/external/android-libs/armeabi/ -L/Users/users/Code/src/original/android-database-sqlcipher/external/libs/armeabi/ -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -mthumb  -L/Users/users/Library/Android/ndk/platforms/android-3/arch-arm/usr/lib -llog -lutils -lcutils -lc -lm -o /Users/users/Code/src/original/android-database-sqlcipher/obj/local/armeabi/libsqlcipher_android.so