diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fc86e3f31..a1047150e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,4 +22,6 @@ jobs:
           -DPROC_TARGET_NUMBER="2" \
           -DWITH_LTO="OFF" \
           -DLENSFUNDBDIR="./share/lensfun" \
+          -DLDFLAGS="-L/usr/local/opt/libffi/lib -L/usr/local/opt/libxml2/lib -L/usr/local/opt/expat/lib -L/usr/local/opt/llvm/lib -Wl,-rpath,/usr/local/opt/llvm/lib" \
+          -DCXXFLAGS="-I/usr/local/opt/libxml2/include -I/usr/local/opt/expat/include -I/usr/local/opt/llvm/include" \
           .