Script for build pdfium for Android

build_pdfium.sh

#! /bin/bash

# current the latest stable android branch (from Jan 2020)
githash=daabea6ba6c09f72e956e826b132f1d1b77acb9b
# if want to run this from somewhere other then /data adjust below
basedir=/data

# exit when any command fails
set -e

# keep track of the last executed command
trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG
# echo an error message before exiting
trap 'echo "\"${last_command}\" command filed with exit code $?."' EXIT

apt-get update

apt-get install -y  build-essential git subversion pkg-config python libtool cmake glib2.0-dev libatspi2.0-dev wget lsb-release sudo

cd $basedir

mkdir -p build/source

if [ ! -e depot_tools ]; then
	git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
fi

export PATH=$PATH:$basedir/depot_tools/

cd build/source/

gclient config --unmanaged https://pdfium.googlesource.com/pdfium.git@$githash

echo "target_os = [ 'android' ]" >> .gclient

if [ ! -e pdfium ]; then
	ln -s pdfium.git@$githash pdfium
fi

gclient sync

cd pdfium
./build/install-build-deps.sh

gclient runhooks

tmpfile=$(mktemp /tmp/build_pdfium.XXXXXX)

sed '/.*"PNG_USE_READ_MACROS",.*/a          "FPDFSDK_EXPORTS",'  BUILD.gn | uniq > $tmpfile
mv $tmpfile BUILD.gn

for arch in  x86 x64 arm arm64; do
gn gen out/$arch --args="target_os=\"android\" target_cpu=\"$arch\"  is_debug = false pdf_is_standalone = true is_component_build = true pdf_enable_xfa = false pdf_enable_v8 = false pdf_use_skia = false symbol_level = 1"
ninja -C out/$arch/ pdfium
done