updated gcc setup and added build cache to github actions

.github/workflows/test_linux.yml

@@ -25,6 +25,9 @@ on:
     types: [opened, synchronize, reopened, closed]
   # workflow_dispatch:
 
+env:
+  GCC_VERSION: "13.2.0"
+
 jobs:
   build-ubuntu:
     runs-on: ${{ matrix.os }} # ubuntu-latest
@@ -37,6 +40,18 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: "Cache GCC build"
+        id: cache-gcc
+        uses: actions/cache@v4
+        with:
+          path: "gcc-$GCC_VERSION/"
+          key: ${{ runner.os }}-gcc
+
+      - name: "Build GCC from source"
+        if: steps.cache-gcc.outputs.cache-hit != 'true'
+        shell: bash
+        run: bash /scripts/build_gcc.sh --version "$GCC_VERSION"
+
       - name: "Install AutonomySim Dependencies"
         shell: bash
         run: bash ./scripts/setup.sh

scripts/build.sh

@@ -60,6 +60,7 @@ RPCLIB_VERSION='2.3.0'
 PROJECT_DIR="$(realpath $PWD)"
 SCRIPT_DIR="$(realpath ${BASH_SOURCE[0]})"
 
+GCC_DIR="${PROJECT_DIR}/deps/gcc-${GCC_VERSION}/bin"
 GCC_VERSION_MAJOR="${GCC_VERSION%%.*}"
 
 if [ "$(uname)" = 'Darwin' ]; then
@@ -131,8 +132,8 @@ if [ "$(uname)" = 'Darwin' ]; then
     CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD} -DCMAKE_CXX_FLAGS=-stdlib=libc++ -DCMAKE_APPLE_SILICON_PROCESSOR=${SYSTEM_PLATFORM}"
 elif [ "$(uname)" = 'Linux' ]; then
     if [ "$USE_GCC" = 'true' ]; then
-        export CC="gcc-${GCC_VERSION_MAJOR}"
-        export CXX="g++-${GCC_VERSION_MAJOR}"
+        export CC="${GCC_DIR}/gcc"
+        export CXX="${GCC_DIR}/g++"
         CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"
     else
         export CC="clang-${CLANG_VERSION}"

scripts/build_gcc.sh

@@ -21,6 +21,9 @@ set -e  # exit on error return code
 # NOTE: for the latest release version see: https://mirrors.kernel.org/gnu/gcc/
 GCC_VERSION='13.2.0'
 
+# Script is to be run from base AutonomySim directory.
+PROJECT_DIR="$PWD"
+
 # process command-line interface (CLI) arguments.
 while [ $# -gt 0 ]; do
     case "$1" in
@@ -38,8 +41,9 @@ while [ $# -gt 0 ]; do
 done
 
 # create dependencies directory if it does not exist.
-mkdir -p deps
+mkdir -p deps/gcc_build
 pushd deps
+pushd gcc_build
 
 echo "Downloading GCC from GNU/Linux mirror: GCC ${GCC_VERSION}..."
 wget "https://mirrors.kernel.org/gnu/gcc/gcc-${GCC_VERSION}/gcc-${GCC_VERSION}.tar.gz.sig"
@@ -59,19 +63,20 @@ source ./contrib/download_prerequisites
 echo 'Building GCC from source...'
 mkdir build
 pushd build
-../configure --prefix="${HOME}/gcc-${GCC_VERSION}" --disable-multilib
+../configure --prefix="${PROJECT_DIR}/deps/gcc-${GCC_VERSION}" --disable-multilib
 make
 make install
 
 echo 'Removing temporary files...'
-popd
-popd
-rm -rf "gcc-${GCC_VERSION}" "gcc-${GCC_VERSION}.tar.gz" "gcc-${GCC_VERSION}.tar.gz.sig"
-popd
+popd  # exit build
+popd  # exit gcc-$GCC_VERSION
+popd  # exit gcc_build
+rm -rf gcc_build
+popd  # exit deps
 
-echo "Prepending GCC ${GCC_VERSION} binary directory path to user PATH variable..."
-echo 'WARNING: This may have undesirable side-effects.'
-echo "export PATH=\$HOME/gcc-${GCC_VERSION}/bin:\$PATH" | tee -a "${HOME}/.bashrc"
+# echo "Prepending GCC ${GCC_VERSION} binary directory path to user PATH variable..."
+# echo 'WARNING: This may have some undesirable side-effects.'
+# echo "export PATH=\$HOME/AutonomySim/deps/gcc-${GCC_VERSION}/bin:\$PATH" | tee -a "${HOME}/.bashrc"
 
 echo 'GCC build completed successfully.'
 

scripts/setup.sh

@@ -144,8 +144,10 @@ else
     sudo apt-get install -y \
         "libc++-${CLANG_VERSION}-dev" \
         "libc++abi-${CLANG_VERSION}-dev"
-    # Download and build GCC from source
-    source "${SCRIPT_DIR}/build_gcc.sh" --version "$GCC_VERSION"
+    # Conditionally download and build GCC from source
+    if [ ! -d "${PROJECT_DIR}/deps/gcc-${GCC_VERSION}/bin" ]; then
+        source "${SCRIPT_DIR}/build_gcc.sh" --version "$GCC_VERSION"
+    fi
     #sudo apt-get install -y \
     #    "gcc-${GCC_VERSION}" \
     #    "libstdc++-${GCC_VERSION}-dev"