ci/cmake: fix clang build on arch

.github/workflows/arch.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           sed -i 's/SigLevel    = Required DatabaseOptional/SigLevel    = Optional TrustAll/' /etc/pacman.conf
           pacman --noconfirm --noprogressbar -Syyu
-          pacman --noconfirm --noprogressbar -Sy gcc base-devel cmake clang
+          pacman --noconfirm --noprogressbar -Sy gcc base-devel cmake clang libc++
 
       - name: Build hyprlang with gcc
         run: |
@@ -28,7 +28,7 @@ jobs:
       - name: Build tests with clang
         run: |
           rm -rf ./build
-          CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX:PATH=/usr -S . -B ./build
+          CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_CXX_FLAGS="-stdlib=libc++" -S . -B ./build
           CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --build ./build --config Release --target tests -j`nproc 2>/dev/null || getconf NPROCESSORS_CONF`
 
       - name: Run tests
@@ -131,11 +131,11 @@ jobs:
         run: |
           sed -i 's/SigLevel    = Required DatabaseOptional/SigLevel    = Optional TrustAll/' /etc/pacman.conf
           pacman --noconfirm --noprogressbar -Syyu
-          pacman --noconfirm --noprogressbar -Sy gcc base-devel cmake clang
+          pacman --noconfirm --noprogressbar -Sy gcc base-devel cmake clang libc++
 
       - name: Build hyprlang with clang
         run: |
-          CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX:PATH=/usr -S . -B ./build
+          CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_CXX_FLAGS="-stdlib=libc++" -S . -B ./build
           CC="/usr/bin/clang" CXX="/usr/bin/clang++" cmake --build ./build --config Release --target hyprlang -j`nproc 2>/dev/null || getconf NPROCESSORS_CONF`
           cmake --install ./build
 

CMakeLists.txt

@@ -44,6 +44,9 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     # for std::expected.
     # probably evil. Arch's clang is very outdated tho...
     target_compile_options(hyprlang PUBLIC -std=gnu++2b -D__cpp_concepts=202002L -Wno-macro-redefined)
+    add_compile_options(-stdlib=libc++)
+    add_link_options(-stdlib=libc++ -lc++abi)
+    message(STATUS "Using clang++ to compile hyprlang")
 endif()
 
 install(TARGETS hyprlang)