cc.sh

#!/bin/bash
# Compile curl for android with NDK.
# Copyright (C) 2019  linarcx <linarcx@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

APP_ABI=(armeabi-v7a x86 arm64-v8a)

BASE_PATH=$(pwd)
BUILD_PATH="$BASE_PATH/build"

## Android NDK
export ANDROID_NDK_HOME="$ANDROID_NDK_HOME"

if [ -z "$ANDROID_NDK_HOME" ]; then
    echo "Please set your ANDROID_NDK_HOME environment variable first"
    exit 1
fi

safeMakeDir() {
	if [ ! -x "$1" ]; then
		mkdir -p "$1"
	fi
}


# compile $1 ABI $2 SYSROOT $3 TOOLCHAIN $4 TARGET $5 CFLAGS
compile() {
    ABI=$1
    SYSROOT=$2
    TOOLCHAIN=$3
    TARGET=$4
    CFLAGS=$5

    # https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
    export SYSROOT="$SYSROOT"
    export CFLAGS="$CFLAGS --sysroot=$SYSROOT"
    export CPPFLAGS="-I$SYSROOT/usr/include --sysroot=$SYSROOT"
    export CC="$TOOLCHAIN/$TARGET-gcc"
    export CPP="$TOOLCHAIN/$TARGET-cpp"
    export CXX="$TOOLCHAIN/$TARGET-g++"
    export LD="$TOOLCHAIN/$TARGET-ld"
    export AS="$TOOLCHAIN/$TARGET-as"
    export AR="$TOOLCHAIN/$TARGET-ar"
    export NM="$TOOLCHAIN/$TARGET-nm"
    export STRIP="$TOOLCHAIN/$TARGET-strip"
    export RANLIB="$TOOLCHAIN/$TARGET-ranlib"

    # config
    ./buildconf
    safeMakeDir $BUILD_PATH/curl/$ABI

    # https://stackoverflow.com/questions/12636536/install-curl-with-openssl
    ./configure --host=$TARGET \
        --prefix=$BUILD_PATH/curl/$ABI \
        --enable-static \
        --enable-shared \
        --disable-verbose \
        --enable-threaded-resolver \
        --enable-libgcc \
        --enable-ipv6
}

# check system
host=$(uname | tr 'A-Z' 'a-z')
if [ $host = "darwin" ] || [ $host = "linux" ]; then
	echo "system: $host"
else
	echo "unsupport system, only support Mac OS X and Linux now."
	exit 1
fi

for abi in ${APP_ABI[*]}; do
	case $abi in
	armeabi-v7a)
		# https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#ARM-Options
		compile $abi "$ANDROID_NDK_HOME/platforms/android-21/arch-arm" "$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/$host-x86_64/bin" "arm-linux-androideabi" "-march=armv7-a -mfloat-abi=softfp -mfpu=neon"
		;;
	x86)
		# http://gcc.gnu.org/onlinedocs/gcc/x86-Options.html
		compile $abi "$ANDROID_NDK_HOME/platforms/android-21/arch-x86" "$ANDROID_NDK_HOME/toolchains/x86-4.9/prebuilt/$host-x86_64/bin" "i686-linux-android" "-march=i686"
		;;
	arm64-v8a)
		# https://gcc.gnu.org/onlinedocs/gcc/AArch64-Options.html#AArch64-Options
		compile $abi "$ANDROID_NDK_HOME/platforms/android-21/arch-arm64" "$ANDROID_NDK_HOME/toolchains/aarch64-linux-android-4.9/prebuilt/$host-x86_64/bin" "aarch64-linux-android" "-march=armv8-a"
		;;
	*)
		echo "Error APP_ABI"
		;;
	esac
done

echo "== build success =="
exit 0