diff --git a/libcxx/cmake/caches/Armv7M-picolibc.cmake b/libcxx/cmake/caches/Armv7M-picolibc.cmake
index 0f8189b457285..9df71fba2cadd 100644
--- a/libcxx/cmake/caches/Armv7M-picolibc.cmake
+++ b/libcxx/cmake/caches/Armv7M-picolibc.cmake
@@ -5,6 +5,7 @@ set(CMAKE_C_COMPILER_TARGET "armv7m-none-eabi" CACHE STRING "")
 set(CMAKE_C_FLAGS "-mfloat-abi=soft" CACHE STRING "")
 set(CMAKE_SYSTEM_NAME Generic CACHE STRING "")
 set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY CACHE STRING "")
+set(LLVM_USE_LINKER "lld" CACHE STRING "")
 set(COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
 set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
 set(COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
diff --git a/libcxx/test/configs/armv7m-picolibc-libc++.cfg.in b/libcxx/test/configs/armv7m-picolibc-libc++.cfg.in
index 9bff5021494ef..b2669a713e2c0 100644
--- a/libcxx/test/configs/armv7m-picolibc-libc++.cfg.in
+++ b/libcxx/test/configs/armv7m-picolibc-libc++.cfg.in
@@ -13,7 +13,7 @@ config.substitutions.append(('%{compile_flags}',
     ' -Wno-atomic-alignment'
 ))
 config.substitutions.append(('%{link_flags}',
-    '-nostdlib -nostdlib++ -L %{lib-dir} -lc++ -lc++abi'
+    '-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib-dir} -lc++ -lc++abi'
     ' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
     ' -T {}'.format(libc_linker_script) +
     ' -Wl,--defsym=__flash=0x0'
diff --git a/libcxx/utils/ci/build-picolibc.sh b/libcxx/utils/ci/build-picolibc.sh
index 521c1bef9fc7e..4be768d741230 100755
--- a/libcxx/utils/ci/build-picolibc.sh
+++ b/libcxx/utils/ci/build-picolibc.sh
@@ -81,7 +81,7 @@ cat <<EOF > "${picolibc_build_dir}/meson-cross-build.txt"
 c = ['${CC:-cc}', '--target=${target}', '-mfloat-abi=soft', '-nostdlib']
 ar = 'llvm-ar'
 as = 'llvm-as'
-ld = 'lld'
+c_ld = 'lld'
 strip = 'llvm-strip'
 [host_machine]
 system = 'none'
diff --git a/libcxxabi/test/configs/armv7m-picolibc-libc++abi.cfg.in b/libcxxabi/test/configs/armv7m-picolibc-libc++abi.cfg.in
index b4744f935ad85..0594ba4ce89b7 100644
--- a/libcxxabi/test/configs/armv7m-picolibc-libc++abi.cfg.in
+++ b/libcxxabi/test/configs/armv7m-picolibc-libc++abi.cfg.in
@@ -8,7 +8,7 @@ config.substitutions.append(('%{compile_flags}',
     '-nostdinc++ -I %{include} -I %{cxx-include} -I %{cxx-target-include} %{maybe-include-libunwind} -I %{libcxx}/test/support -I %{libcxx}/src -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS'
 ))
 config.substitutions.append(('%{link_flags}',
-    '-nostdlib -nostdlib++ -L %{lib} -lc++ -lc++abi'
+    '-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib} -lc++ -lc++abi'
     ' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
     ' -T {}'.format(libc_linker_script) +
     ' -Wl,--defsym=__flash=0x0'
diff --git a/libunwind/test/configs/armv7m-picolibc-libunwind.cfg.in b/libunwind/test/configs/armv7m-picolibc-libunwind.cfg.in
index e8f68a51fc53f..fc54900e1e0a1 100644
--- a/libunwind/test/configs/armv7m-picolibc-libunwind.cfg.in
+++ b/libunwind/test/configs/armv7m-picolibc-libunwind.cfg.in
@@ -8,7 +8,7 @@ config.substitutions.append(('%{compile_flags}',
     '-nostdinc++ -I %{include}'
 ))
 config.substitutions.append(('%{link_flags}',
-    '-nostdlib -nostdlib++ -L %{lib} -lunwind'
+    '-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib} -lunwind'
     ' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
     ' -T {}'.format(libc_linker_script) +
     ' -Wl,--defsym=__flash=0x0'