Try to compile with macosx

.github/workflows/macos.yml

@@ -16,6 +16,10 @@ jobs:
   doxygen:
     name: Doxygen
     runs-on: macos-latest
+    env:
+      # We globally set CC and CXX.
+      CC: x86_64-elf-gcc
+      CXX: x86_64-elf-g++
     steps:
       - name: Clone repository
         uses: actions/checkout@v3
@@ -35,7 +39,7 @@ jobs:
     runs-on: macos-latest
     # Set environment variables
     env:
-      # We globally set CC and CXX to improve compatibility with .travis.yml
+      # We globally set CC and CXX.
       CC: x86_64-elf-gcc
       CXX: x86_64-elf-g++
     steps:

.github/workflows/ubuntu.yml

@@ -73,7 +73,7 @@ jobs:
 
         # Set environment variables
         env:
-            # We globally set CC and CXX to improve compatibility with .travis.yml
+            # We globally set CC and CXX.
             CC: ${{ matrix.cc }}
             CXX: ${{ matrix.cxx }}
 

CMakeLists.txt

@@ -1,6 +1,8 @@
 # =============================================================================
 # Set the minimum required version of cmake.
 cmake_minimum_required(VERSION 3.1...3.22)
+# 
+set(HAVE_FLAG_SEARCH_PATHS_FIRST 0)
 # Initialize the project.
 project(mentos C ASM)