simplify build script

build.sh

@@ -3,80 +3,48 @@
 # Stop on the first sign of trouble
 set -e
 
-if [ $UID != 0 ]; then
-    echo "ERROR: Operation not permitted. Forgot sudo?"
-    exit 1
-fi
-
-VERSION="master"
-if [[ $1 != "" ]]; then VERSION=$1; fi
-
-echo "The Things Network Gateway installer"
+echo "The Things Network RPi + IC880A Gateway Builder/Installer"
 echo ""
 
-# We will build in a place that we will purge after build,
-# and will install just the required files in the appropriate place
+# Build in a temp folder that we'll completely  purge after build,
+# and install into the linux folder where apps reside.
 
 BUILD_DIR="/tmp/ttn-gateway"
+mkdir $BUILD_DIR
+
 INSTALL_DIR="/opt/ttn-gateway"
+mkdir $INSTALL_DIR
 
-if [ ! -d "$INSTALL_DIR" ]; then mkdir $INSTALL_DIR; fi
-if [ ! -d "$BUILD_DIR" ]; then mkdir $BUILD_DIR; fi
-
+# Switch to where we'll do the builds
 pushd $BUILD_DIR
 
-# Build WiringPi
-if [ ! -d wiringPi ]; then
-    git clone git://git.drogon.net/wiringPi
-    pushd wiringPi
-else
-    pushd wiringPi
-    git reset --hard
-    git pull
-fi
-
+# Build WiringPi so that we can do Raspberry Pi I/O
+git clone git://git.drogon.net/wiringPi
+pushd wiringPi
 ./build
-
 popd
 
 # Build LoRa gateway app for this specific platform
-if [ ! -d lora_gateway ]; then
-    git clone https://github.com/TheThingsNetwork/lora_gateway.git
-    pushd lora_gateway
-else
-    pushd lora_gateway
-    git reset --hard
-    git pull
-fi
-
+git clone https://github.com/TheThingsNetwork/lora_gateway.git
+pushd lora_gateway
 sed -i -e 's/PLATFORM= kerlink/PLATFORM= imst_rpi/g' ./libloragw/library.cfg
 # sed -i -e 's/DEBUG_HAL= 0/DEBUG_HAL= 1/g' ./libloragw/library.cfg
-
 make
-
 popd
 
-# Build packet forwarder
-if [ ! -d packet_forwarder ]; then
-    git clone https://github.com/TheThingsNetwork/packet_forwarder.git
-    pushd packet_forwarder
-else
-    pushd packet_forwarder
-    git pull
-    git reset --hard
-fi
-
+# Build the packet forwarder
+git clone https://github.com/TheThingsNetwork/packet_forwarder.git
+pushd packet_forwarder
 make
-
 popd
 
-# Restore location back to where we started the build
+# Restore location back to where we were prior to starting the build
 popd
 
-# Copy packet forwarder to where we will need it
+# Copy packet forwarder to where it'll be expected
 cp $BUILD_DIR/packet_forwarder/poly_pkt_fwd/poly_pkt_fwd $INSTALL_DIR/poly_pkt_fwd
 
 # Delete the build folder so that we save space
 rm -rf $BUILD_DIR
 
-echo "Build completed."
+echo "Build & Installation Completed."

build.sh~

@@ -70,16 +70,13 @@ make
 
 popd
 
-# Copy packet forwarder to where we will need it
-if [ -f ./bin/poly_pkt_fwd ]; then rm ./bin/poly_pkt_fwd; fi
-cp ./poly_pkt_fwd $INSTALL_DIR/poly_pkt_fwd
-
 # Restore location back to where we started the build
-
 popd
 
-# Delete the build folder so that we save space
+# Copy packet forwarder to where we will need it
+cp $BUILD_DIR/packet_forwarder/poly_pkt_fwd/poly_pkt_fwd $INSTALL_DIR/poly_pkt_fwd
 
+# Delete the build folder so that we save space
 rm -rf $BUILD_DIR
 
 echo "Build completed."