gen.sh

#!/bin/sh

#armeabi-v7a -> armv7a-linux-androideabi
#arm64-v8a -> aarch64-linux-android
#x86 -> i686-linux-android
#x86-64 -> x86_64-linux-android
# https://developer.android.com/ndk/guides/other_build_systems

#set these!
API=31
QPDF_VERSION=10.6.3
JPEG_VERSION=9d
ROOT=$(pwd)

#ARCH=armeabi-v7a
#HOST=armv7a-linux-androideabi

#ARCH=arm64-v8a
#HOST=aarch64-linux-android

#ARCH=x86
#HOST=i686-linux-android

#ARCH=x86-64
#HOST=x86_64-linux-android

wget https://www.ijg.org/files/jpegsrc.v${JPEG_VERSION}.tar.gz
tar -xvf jpegsrc.v${JPEG_VERSION}.tar.gz
wget https://github.com/qpdf/qpdf/archive/refs/tags/release-qpdf-${QPDF_VERSION}.tar.gz
tar -xvf release-qpdf-${QPDF_VERSION}.tar.gz

compile_jpeg () {
    cd ${JPEG}
    make clean
    ./configure --host ${HOST}
    make
    cd .libs
    llvm-strip libjpeg.so
    cp libjpeg.so ${LIBFOLDER}
    cd ${ROOT}
}

compile_qpdf () {
    echo 'compiling QPDF'
    cp disable_validation.patch qpdf-release-qpdf-${QPDF_VERSION}
    cd qpdf-release-qpdf-${QPDF_VERSION}
    make clean
    patch -f --verbose < disable_validation.patch
    QPDF_CONF="./configure --host ${HOST} --enable-crypto-native --disable-implicit-crypto CXXFLAGS='-L${LIBFOLDER} -I${JPEG}'"
    echo ${QPDF_CONF}
    eval ${QPDF_CONF}
    make
    llvm-strip libqpdf/build/.libs/libqpdf.so
    cp libqpdf/build/.libs/libqpdf.so ${LIBFOLDER}
    cd ${ROOT}
}

set_compiler_and_paths () {
    LIBFOLDER=${ROOT}/libs/${ARCH}/
    mkdir -p ${LIBFOLDER}
    JPEG=${ROOT}/jpeg-${JPEG_VERSION}/
    export CC=${NDK}toolchains/llvm/prebuilt/linux-x86_64/bin/${HOST}${API}-clang
    export CXX=${NDK}toolchains/llvm/prebuilt/linux-x86_64/bin/${HOST}${API}-clang++
    export PATH=${NDK}toolchains/llvm/prebuilt/linux-x86_64/bin/:$PATH
}

####################################
ARCH=armeabi-v7a
HOST=armv7a-linux-androideabi
set_compiler_and_paths

compile_jpeg
compile_qpdf
####################################

####################################
ARCH=arm64-v8a
HOST=aarch64-linux-android
set_compiler_and_paths

compile_jpeg
compile_qpdf
####################################

####################################
ARCH=x86
HOST=i686-linux-android
set_compiler_and_paths

compile_jpeg
compile_qpdf
####################################

####################################
ARCH=x86-64
HOST=x86_64-linux-android
set_compiler_and_paths

compile_jpeg
compile_qpdf
####################################