[ci] Fix macOS CI already having cmake installed

Author: salkinium

.github/workflows/macos.yml

@@ -25,9 +25,9 @@ jobs:
           export HOMEBREW_NO_INSTALL_CLEANUP=1 # saves time
           brew update
           # brew unlink gcc
-          brew install doxygen boost gcc@14 avr-gcc@14 arm-gcc-bin@14 cmake || true
+          brew install doxygen boost gcc@14 avr-gcc@14 arm-gcc-bin@14 || true
           brew link --force avr-gcc@14 arm-gcc-bin@14
-          # brew upgrade boost gcc git || true
+          # brew upgrade boost gcc git cmake || true
 
       - name: Setup environment - Python pip
         run: |

tools/build_script_generator/scons/resources/SConscript.in

@@ -22,8 +22,8 @@ env["COMPILERPREFIX"] = "avr-"
 env["COMPILERPREFIX"] = "arm-none-eabi-"
 %% endif
 %% if family == "darwin"
-# Using homebrew gcc-14 on macOS instead of clang
-env["COMPILERSUFFIX"] = "-14"
+# Using homebrew gcc on macOS instead of clang
+env["COMPILERSUFFIX"] = env.Detect(["gcc-14", "gcc-15"])[3:]
 %% endif
 %% endif