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2017-04-30[ag] eliminate hacky workaround for 64-bit buildsaguestuser
* HACK: replace all toolchain references to `linux-x86_64` with `linux-x86` * FIX: provide dependency on `file` package that will allow `ndk-build` to detect 32-bit userland, making this * side-effects: * group sdk/env vars with installation code that uses them * add explanatory note about why we use outdated version of `android-ndk` ------------------ *Explanation:* More careful analysis of the meaning of the word `file` in this (subtle!) error message: ```shell /opt/android-sdk-linux/android-ndk-r12b/build/ndk-build: 143: /opt/android-sdk-linux/android-ndk-r12b/build/ndk-build: file: not found ``` led to inspecting line 143 of `ndk-build`, revealing an undefined variable called `file` that would allow `ndk-build` to detect a 32-bit userland: ```shell file -L "$SHELL" | grep -q "x86[_-]64" ``` Thus the error messsage was *not* trying to tell us that a file could not be found, but that the program called `file` could not be found. FUN! :)
2017-04-30[ag] Fix native build step with revised dockerfileaguestuser
* PROBLEM: * most recent version (r14b) of `android-ndk` uses `clang` for cross-compilation * BUT: `openssl` cannot compile successfully w/ `clang` * AND: we depend on `openssl` transitively through `ics-openvpn` while trying to use `android-ndk` r14b * FIX: * downgrade to `android-ndk` (12b) (most recent versoin that still uses `gcc` instead of `clang`) * modify some of the default * REMAINING PROBLEMS: * some string translations for Jamaica now break the build (unclear why -- outdated country abbreviation? ja for jm???) * we are now using a version of ndk that is 2 versions old and a version of ics-openvpn (pinned to a 3.1.2016 commit via submodule) that depends on an outdated version of `openssl`, which raises security concerns. updating to the most recent version will force us to wade into all the dependency problems amongst `ics-openvpn`/`openssl`/`ndk` * REFERENCES: * on `openssl` incompatibility w/ clang: https://github.com/openssl/openssl/pull/2229 * on `ics-openvpn` problems with `ndk`: https://github.com/android-ndk/ndk/issues/144
2017-04-30[ag] Update dockerfile to match config in passing local buildaguestuser
* PROBLEM: the build fails on gitlab in a debian-based docker container * BUT: i (@aguestuser) have a recently-achieved passing build on a debian laptop * ATTEMPTED SOLUTION: construct a dockerfile that matches my local configuration as precisely as possible * PROGRESS: the build gets further than it did before -- getting part of the way through the `buildNative` gradle script before failing * REMAINING FAILURE: several arm64 cross-compile steps in the `ndk-build` step fail because they depend on [neon](https://developer.android.com/ndk/guides/cpu-arm-neon.html): ```shell [arm64-v8a] Compile : crypto_static <= aesv8-armx-64.S openssl/crypto/aes/asm/aesv8-armx-64.S:35:2: error: instruction requires: neon eor v0.16b,v0.16b,v0.16b ^ openssl/crypto/aes/asm/aesv8-armx-64.S:36:2: error: instruction requires: neon ld1 {v3.16b},[x0],#16 ^ openssl/crypto/aes/asm/aesv8-armx-64.S:38:2: error: instruction requires: neon ld1 {v1.4s,v2.4s},[x3],#32 ``` * PROPOSED NEXT STEPS: * consult team to see if there's any collective wisdom about `neon` * look for ways to analyze diff of c dependencies in local machine v. docker instance * consider using ubuntu or debian:sid as the base image for the android container?