Derive 32-bit Linux compiler target from matrix

Author: danyalahmed1995

.github/workflows/build.yml

@@ -34,11 +34,11 @@ jobs:
           { os: ubuntu-24.04,        cxx: g++-12,           c: gcc-12,         arch: x64, gen: Ninja,                 cxx_max: 23 },
           { os: ubuntu-24.04,        cxx: g++-13,           c: gcc-13,         arch: x64, gen: Ninja,                 cxx_max: 23 },
           { os: ubuntu-24.04,        cxx: g++-14,           c: gcc-14,         arch: x64, gen: Ninja,                 cxx_max: 23 },
-          { os: ubuntu-24.04,        cxx: g++-14,           c: gcc-14,         arch: x86, gen: Ninja,                 cxx_max: 23, c_flags: '-m32', cxx_flags: '-m32', linker_flags: '-m32' },
+          { os: ubuntu-24.04,        cxx: g++-14,           c: gcc-14,         arch: x86, gen: Ninja,                 cxx_max: 23 },
           { os: ubuntu-24.04,        cxx: clang++-16,       c: clang-16,       arch: x64, gen: Ninja,                 cxx_max: 20 },
           { os: ubuntu-24.04,        cxx: clang++-17,       c: clang-17,       arch: x64, gen: Ninja,                 cxx_max: 20 },
           { os: ubuntu-24.04,        cxx: clang++-18,       c: clang-18,       arch: x64, gen: Ninja,                 cxx_max: 23 },
-          { os: ubuntu-24.04,        cxx: 'clang++-18 --target=i686-linux-gnu', c: 'clang-18 --target=i686-linux-gnu', arch: x86, gen: Ninja,                 cxx_max: 23 },
+          { os: ubuntu-24.04,        cxx: clang++-18,       c: clang-18,       arch: x86, gen: Ninja,                 cxx_max: 23 },
 
           { os: windows-2022,        cxx: cl,               c: cl,             arch: x86, gen: Visual Studio 17 2022, cxx_max: 23 },
           { os: windows-2022,        cxx: cl,               c: cl,             arch: x64, gen: Visual Studio 17 2022, cxx_max: 23 },
@@ -57,8 +57,8 @@ jobs:
 
     env:
       VAR_CMAKE_FLAGS: |
-        ${{ matrix.env.c && format('-D CMAKE_C_COMPILER=''{0}''', matrix.env.c) }} \
-        ${{ matrix.env.cxx && format('-D CMAKE_CXX_COMPILER=''{0}''', matrix.env.cxx) }} \
+        ${{ matrix.env.c && (contains(matrix.env.os, 'ubuntu') && contains(matrix.env.arch, 'x86') && format('-D CMAKE_C_COMPILER=''{0} {1}''', matrix.env.c, contains(matrix.env.cxx, 'clang') && '--target=i686-linux-gnu' || '-m32') || format('-D CMAKE_C_COMPILER={0}', matrix.env.c)) }} \
+        ${{ matrix.env.cxx && (contains(matrix.env.os, 'ubuntu') && contains(matrix.env.arch, 'x86') && format('-D CMAKE_CXX_COMPILER=''{0} {1}''', matrix.env.cxx, contains(matrix.env.cxx, 'clang') && '--target=i686-linux-gnu' || '-m32') || format('-D CMAKE_CXX_COMPILER={0}', matrix.env.cxx)) }} \
         ${{ matrix.env.c_flags && format('-D CMAKE_C_FLAGS={0}', matrix.env.c_flags) }} \
         ${{ matrix.env.cxx_flags && format('-D CMAKE_CXX_FLAGS''={0}''', matrix.env.cxx_flags) }} \
         ${{ matrix.env.linker_flags && format('-D CMAKE_EXE_LINKER_FLAGS=''{0}''', matrix.env.linker_flags) }} \