revert forced usage of bash, instead opt for (more) explicit compiler selection.

We're now running into dynamic linker problems, so we shall disable
macosx support for now.

.github/workflows/ci.yaml

@@ -11,9 +11,17 @@ jobs:
         os:
           - ubuntu-latest
           - ubuntu-24.04-arm
-          # - windows-latest
-          # - windows-11-arm
+          - windows-latest
+          - windows-11-arm
           # - macos-latest
+        cc:
+          - cc
+          - cc
+          - gcc
+          - gcc
+          - cc
+    env:
+        CC: ${{matrix.cc}}
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v5
@@ -41,7 +49,9 @@ jobs:
           restore-keys: ${{runner.os}}_${{runner.arch}}-lib/obj-
 
       - run: make -Bj libs
-        if: steps.cache-deps.outputs.cache-hit != 'true'
+        if: steps.cache-deps.outputs.cache-hit != 'true' && runner.os != 'Windows'
+      - run: make -Bj2 libs # compile fewer cores, to save memory.
+        if: steps.cache-deps.outputs.cache-hit != 'true' && runner.os == 'Windows'
 
       - run: make -j all
       - run: make -j test

Makefile

@@ -33,6 +33,8 @@ ifeq ($(OS),Windows_NT)
 ISWIN = 1
 NAME  := $(NAME).exe
 $(warning Detected Windows_NT, please refer to the documentation if you encounter issues.)
+else ifeq ($(shell uname -s),Darwin)
+LDLIBS += -framework Cocoa -framework OpenGL -framework IOKit
 endif
 
 # TODO: find a better method to find all source files