Update GHA & build script: indiv. settings for each platform

.github/workflows/main.yml

@@ -22,6 +22,8 @@ jobs:
  - name: Checking out the repo
  uses: actions/checkout@v4
 
+## Windows ##
+
  - name: Setup MSYS2 in Windows
  if: ${{ startsWith(matrix.os, 'windows') }}
  uses: msys2/setup-msys2@v2
@@ -37,14 +39,27 @@ jobs:
  (cd "$(dirname "$(which clang)")" && ln -s clang gcc && ln -s clang++ g++)
  sh build.sh
 
+## Linux/Ubuntu ##
+
  - name: Show info on Ubuntu
  if: ${{ startsWith(matrix.os, 'ubuntu') }}
  run: dpkg -l | grep -E ' gcc| clang'
 
- - name: Building non-MSYS2
- if: ${{ ! startsWith(matrix.os, 'windows') }}
+ - name: Building in Linux
+ if: ${{ startsWith(matrix.os, 'ubuntu') }}
+ env:
+ CC: clang-15
+ CXX: clang-15++
  run: sh build.sh
 
+## macOS ##
+
+ - name: Building in macOS
+ if: ${{ startsWith(matrix.os, 'macos') }}
+ run: sh build.sh
+
+## General ##
+
  - name: Upload log for debugging configure step
  if: always()
  uses: actions/upload-artifact@v4

build.sh

@@ -20,6 +20,9 @@ case "$(echo $plat | cut -d_ -f1)" in
  MINGW64) plat=windows;conf=win/configure;;
 esac
 
+[ -z "$CC" ] || "Using CC=$CC"
+[ -z "$CXX" ] || "Using CC=$CXX"
+
 # path of this script
 scriptdir="$(cd "$(dirname "$0")" && pwd -P)"
 # output dir