build: add explicit gcc cmake presets for linux

.github/workflows/zxc-build-library.yaml

@@ -86,7 +86,7 @@ jobs:
       matrix:
         include:
           - os: Linux
-            preset: linux-x64
+            preset: linux-x64-gcc
 
     steps:
       - name: Harden Runner

CMakePresets.json

@@ -37,33 +37,42 @@
       }
     },
     {
-      "name": "linux-x64-release",
+      "name": "linux-x64-gcc-debug",
+      "displayName": "Linux x64 GCC Debug",
+      "description": "GCC build for Linux x64 Debug",
       "inherits": ["vcpkg-base"],
       "cacheVariables": {
-        "VCPKG_TARGET_TRIPLET": {
-          "type": "STRING",
-          "value": "x64-linux"
-        },
-        "CMAKE_BUILD_TYPE": {
-          "type": "STRING",
-          "value": "Release"
-        }
+        "CMAKE_C_COMPILER": "gcc",
+        "CMAKE_CXX_COMPILER": "g++",
+        "VCPKG_TARGET_TRIPLET": "x64-linux",
+        "CMAKE_BUILD_TYPE": "Debug"
       }
     },
     {
-      "name": "linux-x64-debug",
+      "name": "linux-x64-gcc-release",
+      "displayName": "Linux x64 GCC Release",
+      "description": "GCC build for Linux x64 Release",
       "inherits": ["vcpkg-base"],
       "cacheVariables": {
-        "VCPKG_TARGET_TRIPLET": {
-          "type": "STRING",
-          "value": "x64-linux"
-        },
-        "CMAKE_BUILD_TYPE": {
-          "type": "STRING",
-          "value": "Debug"
-        }
+        "CMAKE_C_COMPILER": "gcc",
+        "CMAKE_CXX_COMPILER": "g++",
+        "VCPKG_TARGET_TRIPLET": "x64-linux",
+        "CMAKE_BUILD_TYPE": "Release"
       }
     },
+    {
+      "name": "linux-x64-release",
+      "displayName": "Linux x64 Release",
+      "description": "Linux x64 Release - defaults to GCC; alias of linux-x64-gcc-release",
+      "inherits": ["linux-x64-gcc-release"]
+    },
+    {
+      "name": "linux-x64-debug",
+      "displayName": "Linux x64 Debug",
+      "description": "Linux x64 Debug — defaults to GCC; alias of linux-x64-gcc-debug.",
+      "inherits": ["linux-x64-gcc-debug"]
+
+    },
     {
       "name": "macos-x64-release",
       "inherits": ["vcpkg-base"],
@@ -150,21 +159,35 @@
     }
   ],
   "buildPresets": [
+    {
+      "name": "linux-x64-gcc-release",
+      "configurePreset": "linux-x64-gcc-release",
+      "displayName": "Build ninja-multi-vcpkg (GCC)",
+      "description": "Build ninja-multi-vcpkg Configurations with GCC",
+      "configuration": "Release",
+      "targets": ["install"]
+    },
+    {
+      "name": "linux-x64-gcc-debug",
+      "configurePreset": "linux-x64-gcc-debug",
+      "displayName": "Build ninja-multi-vcpkg (GCC)",
+      "description": "Build ninja-multi-vcpkg Configurations with GCC",
+      "configuration": "Debug",
+      "targets": ["install"]
+    },
     {
       "name": "linux-x64-release",
+      "inherits": ["linux-x64-gcc-release"],
       "configurePreset": "linux-x64-release",
       "displayName": "Build ninja-multi-vcpkg",
-      "description": "Build ninja-multi-vcpkg Configurations",
-      "configuration": "Release",
-      "targets": ["install"]
+      "description": "Alias for linux-x64-gcc-release build preset"
     },
     {
       "name": "linux-x64-debug",
+      "inherits": ["linux-x64-gcc-debug"],
       "configurePreset": "linux-x64-debug",
       "displayName": "Build ninja-multi-vcpkg",
-      "description": "Build ninja-multi-vcpkg Configurations",
-      "configuration": "Debug",
-      "targets": ["install"]
+      "description": "Alias for linux-x64-gcc-debug build preset"
     },
     {
       "name": "macos-x64-release",

README.md

@@ -80,6 +80,15 @@ cmake --build --preset windows-x64-release
 cmake --preset linux-x64-release
 cmake --build --preset linux-x64-release
 
+# Note on Linux Presets: The standard '''linux-x64-release'''
+# and '''linux-x64-debug''' presets are the recommended
+# defaults for local development and will automatically
+# use the GCC Compiler. If you are specifically testing
+# toolchain portability or checking CI matrix
+# coverage, compiler-explicit alternatives are available:
+# '''linux-x64-gcc-release''' / '''linux-x64-gcc-debug'''
+# (with '''clang''' variants forthcoming)
+
 # macOS (Intel x64)
 cmake --preset macos-x64-release
 cmake --build --preset macos-x64-release