check for compilation errors with GCC 4.8 (#78)

Co-authored-by: Jim Hester <[email protected]>

Author: bkietz

.github/workflows/R-CMD-check.yaml

@@ -24,6 +24,7 @@ jobs:
           - {os: ubuntu-16.04,   r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest", custom: 'no-cpp11test'}
+          - {os: ubuntu-16.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest", custom: 'gcc 4.8'}
           - {os: ubuntu-16.04,   r: 'oldrel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: '3.5', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: '3.4', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
@@ -72,6 +73,12 @@ jobs:
           sudo apt install g++-6 -y
           echo $'CXX1X=g++-6\nCXX11=g++-6' >> ~/.R/Makevars
 
+      - name : Install compiler version
+        if: matrix.config.custom == 'gcc 4.8'
+        run: |
+          sudo apt-get install -y g++-4.8
+          echo $'CXX1X=g++-4.8\nCXX11=g++-4.8' >> ~/.R/Makevars
+
       - name: install macOS system dependecies
         if: runner.os == 'macOS'
         run: brew cask install xquartz
@@ -84,6 +91,8 @@ jobs:
 
       - name: Install cpp11test
         if: matrix.config.custom != 'no-cpp11test'
+        env:
+          R_REMOTES_NO_ERRORS_FROM_WARNINGS: false
         run: |
           remotes::install_local("cpp11test", dependencies = TRUE, INSTALL_opts = "--install-tests", force = TRUE)
         shell: Rscript {0}