Update build_tarballs.jl

.packaging/build_tarballs.jl

@@ -49,6 +49,10 @@ NATIVE_CMAKE_FLAGS+=(-DCMAKE_INSTALL_PREFIX=${host_prefix})
 # Tell CMake where LLVM is
 NATIVE_CMAKE_FLAGS+=(-DLLVM_DIR="${host_prefix}/lib/cmake/llvm")
 NATIVE_CMAKE_FLAGS+=(-DBC_LOAD_FLAGS="-target ${target} --sysroot=/opt/${target}/${target}/sys-root --gcc-toolchain=/opt/${target}")
+if [[ "${target}" == *mingw* ]]; then
+    NATIVE_CMAKE_FLAGS+=(-DCMAKE_CPP_FLAGS=-pthread)
+    NATIVE_CMAKE_FLAGS+=(-DCMAKE_C_FLAGS=-pthread)
+fi
 
 cmake -B build-native -S enzyme -GNinja "${NATIVE_CMAKE_FLAGS[@]}"
 
@@ -88,6 +92,12 @@ if [[ "${target}" == x86_64-apple* ]]; then
   CMAKE_FLAGS+=(-DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.12)
 fi
 fi
+if [[ "${target}" == *mingw* ]]; then
+    CMAKE_FLAGS+=(-DCMAKE_CPP_FLAGS=-pthread)
+    CMAKE_FLAGS+=(-DCMAKE_C_FLAGS=-pthread)
+    CMAKE_FLAGS+=(-DCMAKE_SHARED_LINKER_FLAGS=-pthread)
+    CMAKE_FLAGS+=(-DCMAKE_EXE_LINKER_FLAGS=-pthread)
+fi
 
 echo ${CMAKE_FLAGS[@]}
 cmake -B build -S enzyme -GNinja ${CMAKE_FLAGS[@]}