termux-packages/scripts/build/setup/termux_setup_golang.sh

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# Utility function for golang-using packages to setup a go toolchain.
termux_setup_golang() {
export GOOS=android
export CGO_ENABLED=1
export GO_LDFLAGS="-extldflags=-pie"
export CGO_LDFLAGS="$LDFLAGS"
if [ "$TERMUX_ARCH" = "arm" ]; then
export GOARCH=arm
export GOARM=7
elif [ "$TERMUX_ARCH" = "i686" ]; then
export GOARCH=386
export GO386=sse2
elif [ "$TERMUX_ARCH" = "aarch64" ]; then
export GOARCH=arm64
elif [ "$TERMUX_ARCH" = "x86_64" ]; then
export GOARCH=amd64
else
termux_error_exit "Unsupported arch: $TERMUX_ARCH"
fi
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local TERMUX_GO_VERSION=go1.12.1
local TERMUX_GO_PLATFORM=linux-amd64
local TERMUX_BUILDGO_FOLDER=$TERMUX_COMMON_CACHEDIR/${TERMUX_GO_VERSION}
export GOROOT=$TERMUX_BUILDGO_FOLDER
export PATH=$GOROOT/bin:$PATH
if [ -d "$TERMUX_BUILDGO_FOLDER" ]; then return; fi
local TERMUX_BUILDGO_TAR=$TERMUX_COMMON_CACHEDIR/${TERMUX_GO_VERSION}.${TERMUX_GO_PLATFORM}.tar.gz
rm -Rf "$TERMUX_COMMON_CACHEDIR/go" "$TERMUX_BUILDGO_FOLDER"
termux_download https://storage.googleapis.com/golang/${TERMUX_GO_VERSION}.${TERMUX_GO_PLATFORM}.tar.gz \
"$TERMUX_BUILDGO_TAR" \
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2a3fdabf665496a0db5f41ec6af7a9b15a49fbe71a85a50ca38b1f13a103aeec
( cd "$TERMUX_COMMON_CACHEDIR"; tar xf "$TERMUX_BUILDGO_TAR"; mv go "$TERMUX_BUILDGO_FOLDER"; rm "$TERMUX_BUILDGO_TAR" )
}