update README.md

README.md

@@ -79,3 +79,57 @@ $ docker run -it --net=host openiothub/gateway-go:latest -t <your Token>
 Note that the image will almost always have the last stable Go version.
 
 [releases]: https://github.com/OpenIoTHub/gateway-go/releases
+## Build dynamic/static Library
+```shell
+#build and push mobile lib
+#install gomobile(at system cli)
+go install golang.org/x/mobile/cmd/gobind@latest
+go install golang.org/x/mobile/cmd/gomobile@latest
+gomobile init
+gomobile version
+go get -u golang.org/x/mobile/...
+#
+export GO111MODULE="off"
+gomobile bind -target=android  -o gateway.aar
+gomobile bind -ldflags '-w -s -extldflags "-lresolve"' --target=ios,macos,iossimulator -o OpenIoTHubGateway.xcframework ./client
+#
+#https://gitee.com/OpenIoThub/mobile-lib-podspec
+#git tag -a 0.0.1 -m '0.0.1'
+#git pus --tags
+#pod trunk push ./OpenIoTHubGateway.podspec --skip-import-validation --allow-warnings
+#
+mvn gpg:sign-and-deploy-file -DrepositoryId=ossrh -Dfile=gateway.aar -DpomFile=gateway.pom -Durl=https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/
+mvn deploy:deploy-file -Dfile=client.aar -DgroupId=cloud.iothub -DartifactId=gateway -Dversion=0.0.1 -Dpackaging=aar -DrepositoryId=github -Durl=https://maven.pkg.github.com/OpenIoTHub/gateway-go
+```
+```shell
+#for build windows dll
+echo "building windows dll"
+#brew install mingw-w64
+#sudo apt-get install binutils-mingw-w64
+# shellcheck disable=SC2034
+export CGO_ENABLED=1
+export CC=x86_64-w64-mingw32-gcc
+export CXX=x86_64-w64-mingw32-g++
+export GOOS=windows GOARCH=amd64
+go build -tags windows -ldflags=-w -trimpath -o ./build/windows/gateway_amd64.dll -buildmode=c-shared main.go
+```
+```shell
+#for build linux/android so file
+echo "building linux/android so file"
+#linux和Android共用动态链接库
+export CGO_ENABLED=1
+export GOARCH=amd64
+export GOOS=linux
+go build -tags linux -ldflags=-w -trimpath -o build/linux/libgateway_amd64.so -buildmode c-shared main.go
+# shellcheck disable=SC2034
+export CGO_ENABLED=1
+export GOARCH=arm64
+export GOOS=linux
+#sudo apt install gcc-aarch64-linux-gnu
+export CC=aarch64-linux-gnu-gcc
+##sudo apt install g++-aarch64-linux-gnu
+#export CXX=aarch64-linux-gnu-g++
+##sudo apt-get install binutils-aarch64-linux-gnu
+#export AR=aarch64-linux-gnu-ar
+go build -tags linux -ldflags=-w -trimpath -o build/linux/libgateway_arm64.so -buildmode c-shared main.go
+```