try brew install gcc to get bits/c++-config to link

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

@@ -41,16 +41,22 @@ jobs:
           http-user-agent: ${{ matrix.config.http-user-agent }}
           use-public-rspm: true
 
-      - uses: r-lib/actions/setup-r-dependencies@v1
-        with:
-          extra-packages: rcmdcheck
-
       # multilib to ensure link to bits/c++-config in dgraph.h
-      - name: Install system dependencies
+      - name: Install linux dependencies
         if: runner.os == 'Linux'
         run: |
           sudo apt-get install -y gcc-multilib g++-multilib
 
+      - name: Install macos dependencies
+        if: runner.os == 'macOS'
+        run: |
+          brew update
+          brew install gcc
+
+      - uses: r-lib/actions/setup-r-dependencies@v1
+        with:
+          extra-packages: rcmdcheck
+
       - uses: r-lib/actions/check-r-package@v1
 
       - name: Session info

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: dodgr
 Title: Distances on Directed Graphs
-Version: 0.2.10.027
+Version: 0.2.10.028
 Authors@R: c(
     person("Mark", "Padgham", , "[email protected]", role = c("aut", "cre")),
     person("Andreas", "Petutschnig", role = "aut"),

codemeta.json

@@ -10,7 +10,7 @@
   "codeRepository": "https://github.com/ATFutures/dodgr",
   "issueTracker": "https://github.com/ATFutures/dodgr/issues",
   "license": "https://spdx.org/licenses/GPL-3.0",
-  "version": "0.2.10.027",
+  "version": "0.2.10.28",
   "programmingLanguage": {
     "@type": "ComputerLanguage",
     "name": "R",
@@ -383,10 +383,7 @@
   ],
   "releaseNotes": "https://github.com/ATFutures/dodgr/blob/master/NEWS.md",
   "readme": "https://github.com/ATFutures/dodgr/blob/main/README.md",
-  "contIntegration": [
-    "https://github.com/atfutures/dodgr/actions?query=workflow%3AR-CMD-check",
-    "https://codecov.io/gh/ATFutures/dodgr"
-  ],
+  "contIntegration": ["https://github.com/atfutures/dodgr/actions?query=workflow%3AR-CMD-check", "https://codecov.io/gh/ATFutures/dodgr"],
   "developmentStatus": "https://www.repostatus.org/#active",
   "keywords": [
     "distance",
@@ -415,15 +412,12 @@
         "@type": "PublicationIssue",
         "datePublished": "2019",
         "isPartOf": {
-          "@type": [
-            "PublicationVolume",
-            "Periodical"
-          ],
+          "@type": ["PublicationVolume", "Periodical"],
           "name": "Transport Findings"
         }
       }
     }
   ],
   "relatedLink": "https://CRAN.R-project.org/package=dodgr",
-  "fileSize": "13908.223KB"
+  "fileSize": "13857.052KB"
 }