本文最后更新于：May 7, 2023 pm
[TOC]
CImg for Android
Add the following code in CImg.h from https://github.com/dtschump/CImg.git to NOT use Xlib.h:
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| #undef cimg_display
#define cimg_display 0
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build OpenCV for Android
- https://blog.csdn.net/u011178262/article/details/78209791#for_Android_127
build Suitsparse for Android
- https://github.com/cggos/suitesparse_for_android
build Google Ceres-Solver for Android
ceres-solver-1.14.0
ref: How to Compile Ceres Android Library with NDK under Mac
替换 ceres-solver-1.14.0/jni 下 Application.mk 中的内容为
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| APP_BUILD_SCRIPT := $(call my-dir)/Android.mk
APP_PROJECT_PATH := $(call my-dir)
APP_CPPFLAGS := -frtti -fexceptions -std=c++0x
APP_OPTIM := release
APP_STL := gnustl_static
APP_ABI := armeabi-v7a
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在 ceres-solver-1.14.0/jni 下
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| EIGEN_PATH=/home/cg/projects/3rdparty/eigen-3.3.7 ndk-build -j1
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编译完后，在 ceres-solver-1.14.0/obj/local/armeabi-v7a 下生成 libceres.a 文件。
build FFTW for Android
It is best to download official tarballs from http://fftw.org/, other than using its github repository!!!
Build Reference: fftw_android( from he-kai github )
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| #!/bin/sh
set -o errexit
PROJECT_ROOT="`pwd`/../"
INSTALL_DIR="$PROJECT_ROOT/jni/ndk-modules/fftw3"
mkdir -p $INSTALL_DIR
NDK_DIR=${ANDROID_NDK}
export PATH="$NDK_DIR/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/:$PATH"
export SYS_ROOT="$NDK_DIR/platforms/android-9/arch-arm/"
export CC="arm-linux-androideabi-gcc --sysroot=$SYS_ROOT"
export CXX="arm-linux-androideabi-g++"
export LD="arm-linux-androideabi-ld"
export AR="arm-linux-androideabi-ar"
export RANLIB="arm-linux-androideabi-ranlib"
export STRIP="arm-linux-androideabi-strip"
export CFLAGS="-mfpu=neon -march=armv7-a -mfloat-abi=softfp"
export CXXFLAGS="-lstdc++"
export LDFLAGS="-lc -lgcc"
SRC_DIR="./fftw-3.3.3"
cd $SRC_DIR
./configure --host=arm-eabi --prefix=$INSTALL_DIR --enable-float --enable-neon
make -j$(nproc)
make install -j$(nproc)
exit 0
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