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[glib: 2/3] Add Android CI

commit f83493f83d247e2c7a3f10f4361282b09aa1bd7e
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Sun May 20 00:14:56 2018 -0400

    Add Android CI
    
    This adds to the CI a cross build for Android NDK r16 API 21 (because
    thats what GStreamer currently use) for arm64.
    
    GNU iconv must be built manually into our docker image because Android
    NDK doesn't seems to ship it. The latest NDK r17 API 28 has iconv.h but
    iconv_open() symbol isn't found by the linker. Looks like broken NDK.
    
    libffi also needs to be built manually because the meson subproject
    doesn't support building for Android platform. It needs a recent RC
    release because latest stable release is 4 years old and fails to
    build.
    
    Fixes #1385.

 .gitlab-ci.yml                  |  14 +++++-
 .gitlab-ci/Dockerfile           |   6 +++
 .gitlab-ci/setup-android-ndk.sh | 106 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 125 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ccee2ed0c..7df974b3b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: registry.gitlab.gnome.org/gnome/glib/master:v1
+image: registry.gitlab.gnome.org/gnome/glib/master:v2
 
 stages:
   - build
@@ -32,6 +32,18 @@ fedora-meson-x86_64:
       - "${CI_PROJECT_DIR}/_build/meson-logs"
       - "${CI_PROJECT_DIR}/_coverage"
 
+fedora-meson-android_ndk_r16_api21_arm64:
+  stage: build
+  except:
+    - tags
+  script:
+    # FIXME: add --werror
+    - meson --cross-file=/opt/cross-file-android_ndk_r16_api21_arm64.txt -Diconv=gnu -Dinternal_pcre=true 
--buildtype debug _build
+    - ninja -C _build
+  artifacts:
+    paths:
+      - "${CI_PROJECT_DIR}/_build/meson-logs"
+
 msys2-mingw32:
   stage: build
   tags:
diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index dab235166..713cf095a 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -25,10 +25,16 @@ RUN dnf -y install \
     python3-wheel \
     systemtap-sdt-devel \
     zlib-devel \
+    wget \
+    unzip \
+    make \
  && dnf clean all
 
 RUN pip3 install meson
 
+COPY setup-android-ndk.sh .
+RUN ./setup-android-ndk.sh
+
 ARG HOST_USER_ID=5555
 ENV HOST_USER_ID ${HOST_USER_ID}
 RUN useradd -u $HOST_USER_ID -ms /bin/bash user
diff --git a/.gitlab-ci/setup-android-ndk.sh b/.gitlab-ci/setup-android-ndk.sh
new file mode 100755
index 000000000..0bce26b80
--- /dev/null
+++ b/.gitlab-ci/setup-android-ndk.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+#
+# Copyright 2018 Collabora ltd.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Xavier Claessens <xavier claessens collabora com>
+#
+
+set -e
+
+cd /opt
+
+# Download Android NDK
+wget --quiet https://dl.google.com/android/repository/android-ndk-r16-linux-x86_64.zip
+echo 
"5b9ec70eac78f6cef8572dff9a133c9b18c83155dc6d980237a6925df4ae65b7b2adb3d8ea55b3ce9f3f75868f20eefdb8c87da110683c2dd1a1a27c44dc5b91
  android-ndk-r16-linux-x86_64.zip" | sha512sum -c
+unzip android-ndk-r16-linux-x86_64.zip
+rm android-ndk-r16-linux-x86_64.zip
+
+# Setup cross build env
+export ANDROID_HOST=aarch64-linux-android
+export ANDROID_BUILD=linux-x86_64
+export ANDROID_ARCH=arm64
+export ANDROID_NDK=/opt/android-ndk-r16
+export ANDROID_VERSION=21
+export ANDROID_TOOLCHAIN_VERSION=4.9
+export ANDROID_SYSROOT=$ANDROID_NDK/platforms/android-$ANDROID_VERSION/arch-$ANDROID_ARCH
+export 
ANDROID_PREBUILT=$ANDROID_NDK/toolchains/$ANDROID_HOST-$ANDROID_TOOLCHAIN_VERSION/prebuilt/$ANDROID_BUILD/bin
+export CPPFLAGS="--sysroot=$ANDROID_SYSROOT -isystem $ANDROID_NDK/sysroot/usr/include/  -isystem 
$ANDROID_NDK/sysroot/usr/include/$ANDROID_HOST"
+export CFLAGS="$CPPFLAGS -D__ANDROID_API__=$ANDROID_VERSION"
+export AR=$ANDROID_HOST-ar
+export RANLIB=$ANDROID_HOST-ranlib
+export CPP=$ANDROID_HOST-cpp
+export PATH=$ANDROID_PREBUILT:$PATH
+
+# Cross build libiconv
+wget --quiet http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.15.tar.gz
+echo 
"1233fe3ca09341b53354fd4bfe342a7589181145a1232c9919583a8c9979636855839049f3406f253a9d9829908816bb71fd6d34dd544ba290d6f04251376b1a
  libiconv-1.15.tar.gz" | sha512sum -c
+tar xzf libiconv-1.15.tar.gz
+rm libiconv-1.15.tar.gz
+pushd libiconv-1.15
+./configure --host=$ANDROID_HOST --prefix=/opt/$ANDROID_HOST  --libdir=/opt/$ANDROID_HOST/lib64
+make
+make install
+popd
+
+# Cross build libffi
+wget --quiet https://github.com/libffi/libffi/releases/download/v3.3-rc0/libffi-3.3-rc0.tar.gz
+echo 
"e6e695d32cd6eb7d65983f32986fccdfc786a593d2ea18af30ce741f58cfa1eb264b1a8d09df5084cb916001aea15187b005c2149a0620a44397a4453b6137d4
  libffi-3.3-rc0.tar.gz" | sha512sum -c
+tar xzf libffi-3.3-rc0.tar.gz
+rm libffi-3.3-rc0.tar.gz
+pushd libffi-3.3-rc0
+./configure --host=$ANDROID_HOST --prefix=/opt/$ANDROID_HOST --libdir=/opt/$ANDROID_HOST/lib64
+make
+make install
+popd
+
+# Create a pkg-config wrapper that won't pick fedora libraries
+export PKG_CONFIG=/opt/${ANDROID_HOST}/bin/pkg-config
+cat > $PKG_CONFIG <<- EOM
+#!/bin/sh
+SYSROOT=/opt/${ANDROID_HOST}
+export PKG_CONFIG_DIR=
+export PKG_CONFIG_LIBDIR=\${SYSROOT}/lib64/pkgconfig
+export PKG_CONFIG_SYSROOT_DIR=\${SYSROOT}
+exec pkg-config "\$@"
+EOM
+chmod +x $PKG_CONFIG
+
+# Create a cross file that can be passed to meson
+cat > /opt/cross-file-android_ndk_r16_api21_arm64.txt <<- EOM
+[host_machine]
+system = 'android'
+cpu_family = 'arm64'
+cpu = 'arm64'
+endian = 'little'
+
+[properties]
+c_args = ['--sysroot=${ANDROID_SYSROOT}',
+          '-isystem', '/opt/${ANDROID_HOST}/include',
+          '-isystem', '${ANDROID_NDK}/sysroot/usr/include/',
+          '-isystem', '${ANDROID_NDK}/sysroot/usr/include/${ANDROID_HOST}',
+          '-D__ANDROID_API__=${ANDROID_VERSION}']
+c_link_args = ['--sysroot=${ANDROID_SYSROOT}',
+               '-L/opt/${ANDROID_HOST}/lib64',
+               '-fuse-ld=gold']
+
+[binaries]
+c = '${ANDROID_PREBUILT}/${ANDROID_HOST}-gcc'
+cpp = '${ANDROID_PREBUILT}/${ANDROID_HOST}-g++'
+ar = '${ANDROID_PREBUILT}/${ANDROID_HOST}-ar'
+strip = '${ANDROID_PREBUILT}/${ANDROID_HOST}-strip'
+pkgconfig = '${PKG_CONFIG}'
+EOM
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