libceres.a universal build

build.sh

#!/bin/bash

#brew install eigen3
EIGEN_PATH=/opt/local/include/eigen3

# build for device
cmake . -DCMAKE_TOOLCHAIN_FILE=./cmake/iOS.cmake -DEIGEN_INCLUDE_DIR=${EIGEN_PATH} -DIOS_PLATFORM=OS -DEIGENSPARSE=ON 
make -j8
# install headers in ..
make install
# delete the installed lib (we want a universal one)
rm ../lib/libceres.a


# build for simulator
cmake . -DCMAKE_TOOLCHAIN_FILE=./cmake/iOS.cmake -DEIGEN_INCLUDE_DIR=${EIGEN_PATH} -DEIGENSPARSE=ON -DIOS_PLATFORM=SIMULATOR
make -j8


mkdir -p build_simulator
cp ./lib/libceres.a ./build_simulator

# build for simulator64
cmake . -DCMAKE_TOOLCHAIN_FILE=./cmake/iOS.cmake -DEIGEN_INCLUDE_DIR=${EIGEN_PATH} -DEIGENSPARSE=ON -DIOS_PLATFORM=SIMULATOR64
make -j8

mkdir -p build_simulator64
cp ./lib/libceres.a ./build_simulator64

# create universal library
lipo -create build/ build_simulator/lib/libceres.a build_simulator64/lib/libceres.a -output lib/libceres-universal.a

# clean up
#rm -rf build build_simulator build_simulator64