Remove GCC build

build.sh

@@ -7,23 +7,8 @@ pushd "$SCRIPT_DIR"  >/dev/null
 set -e
 set -x
 
-MIN_GCC_VERSION=6.0.0
-gccBuild=false
 function version_less_than_equal_to() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" = "$1"; }
 
-# Parse command line arguments
-while [[ $# -gt 0 ]]
-do
-key="$1"
-
-case $key in
-    --gcc)
-    gccBuild=true
-    shift # past argument
-    ;;
-esac
-done
-
 # check for rpclib
 if [ ! -d "./external/rpclib/rpclib-2.2.1" ]; then
     echo "ERROR: new version of AirSim requires newer rpclib."
@@ -42,35 +27,14 @@ else
     CMAKE=$(which cmake)
 fi
 
-# set up paths of cc and cxx compiler
-if $gccBuild; then
-    # variable for build output
-    build_dir=build_gcc_debug
-    # gcc tools
-    if ! which gcc; then
-        echo "ERROR: run setup.sh to install a good version of gcc."
-        exit 1
-    else
-        gcc_ver=$(gcc -dumpfullversion)
-    fi
-
-    if version_less_than_equal_to $gcc_ver $MIN_GCC_VERSION; then
-        export CC="gcc-6"
-        export CXX="g++-6"
-    else
-        export CC="gcc"
-        export CXX="g++"
-    fi
+# variable for build output
+build_dir=build_debug
+if [ "$(uname)" == "Darwin" ]; then
+    export CC=/usr/local/opt/llvm@8/bin/clang
+    export CXX=/usr/local/opt/llvm@8/bin/clang++
 else
-    # variable for build output
-    build_dir=build_debug
-    if [ "$(uname)" == "Darwin" ]; then
-        export CC=/usr/local/opt/llvm@8/bin/clang
-        export CXX=/usr/local/opt/llvm@8/bin/clang++
-    else
-        export CC="clang-8"
-        export CXX="clang++-8"
-    fi
+    export CC="clang-8"
+    export CXX="clang++-8"
 fi
 
 #install EIGEN library

docs/build_linux.md

@@ -40,13 +40,6 @@ Please see instructions [here](https://github.com/Microsoft/AirSim/blob/master/d
    ./build.sh
    ```
 
-  Optionally, if you need GCC binaries for some other reason, you can simply add gcc to the setup and build invocation, like this:
-
-   ```bash
-   ./setup.sh --gcc
-   ./build.sh --gcc
-   ```
-
 ### Build Unreal Environment
 
 Finally, you will need an Unreal project that hosts the environment for your vehicles. AirSim comes with a built-in "Blocks Environment" which you can use, or you can create your own. Please see [setting up Unreal Environment](unreal_proj.md).

setup.sh

@@ -5,9 +5,7 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 pushd "$SCRIPT_DIR" >/dev/null
 
 downloadHighPolySuv=true
-gccBuild=false
 MIN_CMAKE_VERSION=3.10.0
-MIN_GCC_VERSION=6.0.0
 function version_less_than_equal_to() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" = "$1"; }
 
 # Parse command line arguments
@@ -20,51 +18,24 @@ case $key in
     downloadHighPolySuv=false
     shift # past value
     ;;
-    --gcc)
-    gccBuild=true
-    shift # past argument
-    ;;
 esac
 done
 
-if $gccBuild; then
-    # gcc tools
-    if ! which gcc; then
-        # GCC not installed
-        gcc_ver=0
-    else
-        gcc_ver=$(gcc -dumpfullversion)
-    fi
-
-    if version_less_than_equal_to $gcc_ver $MIN_GCC_VERSION; then
-        if [ "$(uname)" == "Darwin" ]; then # osx
-            brew update
-            brew install gcc-6 g++-6
-        else
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt-get -y update
-            sudo apt-get install -y gcc-6 g++-6
-        fi
-    else
-        echo "Already have good version of gcc: $gcc_ver"
-    fi
-else
-    # llvm tools
-    if [ "$(uname)" == "Darwin" ]; then # osx
-        brew update
-        brew tap llvm-hs/homebrew-llvm
-        brew install llvm@8
-    else #linux
-        #install clang and build tools
-        VERSION=$(lsb_release -rs | cut -d. -f1)
-        # Since Ubuntu 17 clang is part of the core repository
-        # See https://packages.ubuntu.com/search?keywords=clang-8
-        if [ "$VERSION" -lt "17" ]; then
-            wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-            sudo apt-get update
-        fi
-        sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev
+# llvm tools
+if [ "$(uname)" == "Darwin" ]; then # osx
+    brew update
+    brew tap llvm-hs/homebrew-llvm
+    brew install llvm@8
+else #linux
+    #install clang and build tools
+    VERSION=$(lsb_release -rs | cut -d. -f1)
+    # Since Ubuntu 17 clang is part of the core repository
+    # See https://packages.ubuntu.com/search?keywords=clang-8
+    if [ "$VERSION" -lt "17" ]; then
+        wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+        sudo apt-get update
     fi
+    sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev
 fi
 
 #give user perms to access USB port - this is not needed if not using PX4 HIL