diff --git a/swift/utils/build-script-impl b/swift/utils/build-script-impl
index b1d060328bc..218c9215260 100755
--- a/swift/utils/build-script-impl
+++ b/swift/utils/build-script-impl
@@ -1726,6 +1726,7 @@
                     )
                 fi
 
+                cross_c_flags=""
                 if [[ ! "${SKIP_BUILD_ANDROID}" ]] ||
                    [[ $(is_cross_tools_host ${host}) && "${host}" == "android-"* ]]; then
                     cmake_options=(
@@ -1733,7 +1734,9 @@
                         -DSWIFT_ANDROID_NDK_PATH:STRING="${ANDROID_NDK}"
                         -DSWIFT_ANDROID_DEPLOY_DEVICE_PATH:STRING="${ANDROID_DEPLOY_DEVICE_PATH}"
                         -DSWIFT_SDK_ANDROID_ARCHITECTURES:STRING="${ANDROID_ARCH}"
+                        -DBRIDGING_MODE:STRING="PURE"
                     )
+                    cross_c_flags="$CFLAGS --target=$CCTERMUX_HOST_PLATFORM"
                 fi
 
                 if [[ ! "${SKIP_BUILD_WASM}" ]]; then
@@ -1785,6 +1788,9 @@
                         "${cmake_options[@]}"
                         -DLLVM_TABLEGEN=$(build_directory "${LOCAL_HOST}" llvm)/bin/llvm-tblgen
                         -DSWIFT_INCLUDE_TEST_BINARIES:BOOL=FALSE
+                        -DCMAKE_FIND_ROOT_PATH:PATH="${CROSS_COMPILE_DEPS_PATH}"
+                        -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER
+                        -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY
                     )
                 fi
 
@@ -1800,6 +1806,13 @@
                     native_swift_tools_path="${NATIVE_SWIFT_TOOLS_PATH}"
                 fi
 
+                if [[ $(is_cross_tools_host ${host}) && "${host}" != "macosx-"* ]] ; then
+                    cmake_options=(
+                        "${cmake_options[@]}"
+                        -DCMAKE_Swift_COMPILER:PATH="${native_swift_tools_path}/swiftc"
+                    )
+                fi
+
                 if [ "${BUILD_LLVM}" == "0" ] ; then
                     cmake_options=(
                         "${cmake_options[@]}"
@@ -1820,8 +1833,8 @@
 
                 cmake_options=(
                     "${cmake_options[@]}"
-                    -DCMAKE_C_FLAGS="$(swift_c_flags ${host})"
-                    -DCMAKE_CXX_FLAGS="$(swift_c_flags ${host})"
+                    -DCMAKE_C_FLAGS="$(swift_c_flags ${host}) ${cross_c_flags}"
+                    -DCMAKE_CXX_FLAGS="$(swift_c_flags ${host}) ${cross_c_flags}"
                     -DCMAKE_C_FLAGS_RELWITHDEBINFO="-O2 -DNDEBUG"
                     -DCMAKE_CXX_FLAGS_RELWITHDEBINFO="-O2 -DNDEBUG"
                     -DCMAKE_BUILD_TYPE:STRING="${SWIFT_BUILD_TYPE}"
@@ -1878,6 +1891,7 @@
                     -DSWIFT_PATH_TO_SWIFT_SYNTAX_SOURCE:PATH="${SWIFT_SYNTAX_SOURCE_DIR}"
                     -DSWIFT_ENABLE_BACKTRACING:BOOL=$(true_false "${SWIFT_ENABLE_BACKTRACING}")
                     -DSWIFT_STDLIB_OVERRIDABLE_RETAIN_RELEASE:BOOL=$(true_false "${SWIFT_STDLIB_OVERRIDABLE_RETAIN_RELEASE}")
+                    -DSWIFT_CLANG_RESOURCE_DIR_SYMLINK_INSTALL_TARGET:STRING="../clang/latest"
                     "${swift_cmake_options[@]}"
                 )
 
@@ -2045,6 +2045,8 @@ for host in "${ALL_HOSTS[@]}"; do
                     cmake_options+=(
                         -DCMAKE_FIND_ROOT_PATH:PATH="${CROSS_COMPILE_DEPS_PATH}"
                         -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER
+                        -DCMAKE_CXX_FLAGS="$CXXFLAGS --target=$CCTERMUX_HOST_PLATFORM $CPPFLAGS"
+                        -DCMAKE_EXE_LINKER_FLAGS="$LDFLAGS --target=$CCTERMUX_HOST_PLATFORM"
                     )
                 fi
 
@@ -2388,7 +2404,8 @@
                     -DENABLE_TESTING=YES
                   )
                   if [[ $(is_cross_tools_host ${host}) ]] ; then
-                      cmake_options+=("${SWIFT_TARGET_CMAKE_OPTIONS[@]}")
+                      cmake_options+=("${SWIFT_TARGET_CMAKE_OPTIONS[@]}"
+                      -DCMAKE_C_FLAGS="$CFLAGS --target=$CCTERMUX_HOST_PLATFORM $CPPFLAGS")
                   fi
                 ;;
                 esac
@@ -2537,6 +2554,9 @@
                     # https://cmake.org/cmake/help/latest/command/find_package.html
                     cmake_options+=(
                         -DCMAKE_FIND_ROOT_PATH:PATH="${CROSS_COMPILE_DEPS_PATH}"
+                        -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER
+                        -DCMAKE_C_FLAGS="$CFLAGS --target=$CCTERMUX_HOST_PLATFORM $CPPFLAGS"
+                        -DCMAKE_EXE_LINKER_FLAGS="$LDFLAGS --target=$CCTERMUX_HOST_PLATFORM"
                     )
                 fi
                 if [[ "${host}" == "android-"* ]]; then
@@ -2583,6 +2603,11 @@
                   )
                   if [[ $(is_cross_tools_host ${host}) ]] ; then
                       cmake_options+=("${SWIFT_TARGET_CMAKE_OPTIONS[@]}")
+                      cmake_options+=(
+                          -DCMAKE_C_FLAGS="$CFLAGS --target=$CCTERMUX_HOST_PLATFORM $CPPFLAGS"
+                          -DCMAKE_EXE_LINKER_FLAGS="$LDFLAGS --target=$CCTERMUX_HOST_PLATFORM"
+                          -DCMAKE_SHARED_LINKER_FLAGS="$LDFLAGS --target=$CCTERMUX_HOST_PLATFORM"
+                      )
                   fi
                 ;;
                 esac
@@ -2929,7 +2999,20 @@ for host in "${ALL_HOSTS[@]}"; do
                 if [[ -z "${INSTALL_LLBUILD}" ]] ; then
                     continue
                 fi
-                INSTALL_TARGETS="install-swift-build-tool install-libllbuildSwift"
+                INSTALL_TARGETS="install-libllbuildSwift"
+                # Remove most libdispatch products before building the package manager.
+                rm -rf @TERMUX_PREFIX@/lib/swift{,_static}/{Block,os}
+                rm @TERMUX_PREFIX@/lib/swift{,_static}/dispatch/*.h
+                sed -i -e "s%dispatch\.h%@TERMUX_PREFIX@/include/dispatch/dispatch.h%" \
+                -e "s%introspection\.h%@TERMUX_PREFIX@/include/dispatch/introspection.h%" \
+                @TERMUX_PREFIX@/lib/swift/dispatch/module.modulemap
+                sed -i -e "s%dispatch\.h%@TERMUX_PREFIX@/include/dispatch/dispatch.h%" \
+                -e "s%introspection\.h%@TERMUX_PREFIX@/include/dispatch/introspection.h%" \
+                @TERMUX_PREFIX@/lib/swift_static/dispatch/module.modulemap
+                if [[ -z "${ANDROID_DATA}" ]] ; then
+                    mv @TERMUX_PREFIX@/lib/swift/${host/-//}/glibc.modulemap @TERMUX_PREFIX@/glibc-native.modulemap
+                    cp $(build_directory ${host} swift)/lib/swift/${host/-//}/glibc.modulemap @TERMUX_PREFIX@/lib/swift/${host/-//}/glibc.modulemap
+                fi
                 ;;
             # Products from this here install themselves; they don't fall-through.
             lldb)
                 if [[ -z "${INSTALL_LLDB}" ]] ; then