diff --git a/l/libcxx/manifest.x86_64.bin b/l/libcxx/manifest.x86_64.bin
index 089f54973..1a4de5ef7 100644
Binary files a/l/libcxx/manifest.x86_64.bin and b/l/libcxx/manifest.x86_64.bin differ
diff --git a/l/libcxx/manifest.x86_64.jsonc b/l/libcxx/manifest.x86_64.jsonc
index 7e2037acc..6a8230062 100644
--- a/l/libcxx/manifest.x86_64.jsonc
+++ b/l/libcxx/manifest.x86_64.jsonc
@@ -5,7 +5,6 @@
 		"libcxx": {
 			"build-depends": [
 				"binary(python3)",
-				"clang-32bit",
 				"gcc-32bit-devel",
 				"libcxx-32bit-devel",
 				"pkgconfig(libxcrypt)",
@@ -30,7 +29,6 @@
 		"libcxx-32bit": {
 			"build-depends": [
 				"binary(python3)",
-				"clang-32bit",
 				"gcc-32bit-devel",
 				"libcxx-32bit-devel",
 				"pkgconfig(libxcrypt)",
@@ -38,7 +36,7 @@
 			],
 			"depends": [
 				"libcxx",
-				"soname(libc.so.6(x86))"
+				"soname(libc.so.6(386))"
 			],
 			"files": [
 				"/usr/lib32/libc++.so.1",
@@ -58,7 +56,6 @@
 		"libcxx-32bit-devel": {
 			"build-depends": [
 				"binary(python3)",
-				"clang-32bit",
 				"gcc-32bit-devel",
 				"libcxx-32bit-devel",
 				"pkgconfig(libxcrypt)",
@@ -73,6 +70,7 @@
 				"/usr/lib32/libc++abi.a",
 				"/usr/lib32/libc++abi.so",
 				"/usr/lib32/libc++experimental.a",
+				"/usr/lib32/libunwind.a",
 				"/usr/lib32/libunwind.so",
 				"/usr/lib32/pkgconfig/libunwind.pc"
 			],
@@ -84,7 +82,6 @@
 		"libcxx-devel": {
 			"build-depends": [
 				"binary(python3)",
-				"clang-32bit",
 				"gcc-32bit-devel",
 				"libcxx-32bit-devel",
 				"pkgconfig(libxcrypt)",
@@ -1123,6 +1120,7 @@
 				"/usr/lib/libc++abi.a",
 				"/usr/lib/libc++abi.so",
 				"/usr/lib/libc++experimental.a",
+				"/usr/lib/libunwind.a",
 				"/usr/lib/libunwind.so",
 				"/usr/lib/pkgconfig/libunwind.pc"
 			],
@@ -1133,6 +1131,6 @@
 		}
 	},
 	"source-name": "libcxx",
-	"source-release": "9",
+	"source-release": "10",
 	"source-version": "18.1.8"
 }
diff --git a/l/libcxx/stone.yaml b/l/libcxx/stone.yaml
index 50521efe8..52e623eb7 100644
--- a/l/libcxx/stone.yaml
+++ b/l/libcxx/stone.yaml
@@ -1,6 +1,6 @@
 name        : libcxx
 version     : 18.1.8
-release     : 9
+release     : 10
 summary     : Modern C++ standard library
 license     :
     - Apache-2.0 WITH LLVM-exception
@@ -15,29 +15,29 @@ upstreams   :
     - https://github.com/llvm/llvm-project/releases/download/llvmorg-18.1.8/llvm-project-18.1.8.src.tar.xz: 0b58557a6d32ceee97c8d533a59b9212d87e0fc4d2833924eb6c611247db2f2a
 builddeps   :
     - binary(python3)
-    - clang-32bit
-    - gcc-32bit-devel
-    - libcxx-32bit-devel
     - pkgconfig(libxcrypt)
     - pkgconfig32(libxcrypt)
+    - gcc-32bit-devel
+    - libcxx-32bit-devel
 emul32      : yes
+tuning      :
+    - lto: full
 setup       : |
+    export CFLAGS="$CFLAGS -ffat-lto-objects"
+    export CXXFLAGS="$CXXFLAGS -ffat-lto-objects"
+    export LDFLAGS="$LDFLAGS -ffat-lto-objects"
+
     # Context on CMAKE_ vars: https://reviews.llvm.org/D112155#3353869
     %cmake -S runtimes \
+        -DCMAKE_ASM_COMPILER_TARGET=%(build_platform) \
+        -DCMAKE_CXX_COMPILER_TARGET=%(build_platform) \
         -DCMAKE_INSTALL_PREFIX=/usr \
-        -DLLVM_DEFAULT_TARGET_TRIPLE=%(build_platform) \
-        -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi;libunwind' \
-        -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF \
-        -DLLVM_LIBDIR_SUFFIX=%(libsuffix) \
-        -DLLVM_USE_SANITIZER=OFF \
-        -DLLVM_INCLUDE_TESTS=ON \
-        -DLLVM_LIBGCC_EXPLICIT_OPT_IN=ON \
         -DCOMPILER_RT_USE_LIBCXX=ON \
         -DLIBCXX_ENABLE_ASSERTIONS=OFF \
         -DLIBCXX_ENABLE_PARALLEL_ALGORITHMS=OFF \
         -DLIBCXX_ENABLE_SHARED=ON \
-        -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
         -DLIBCXX_ENABLE_STATIC=OFF \
+        -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
         -DLIBCXX_HAS_ATOMIC_LIB=ON \
         -DLIBCXX_INSTALL_SUPPORT_HEADERS=ON \
         -DLIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY=ON \
@@ -52,17 +52,24 @@ setup       : |
         -DLIBUNWIND_INSTALL_HEADERS=ON \
         -DLIBUNWIND_INSTALL_LIBRARY=ON \
         -DLIBUNWIND_ENABLE_SHARED=ON \
-        -DLIBUNWIND_ENABLE_STATIC=OFF \
+        -DLIBUNWIND_ENABLE_STATIC=ON \
         -DLIBUNWIND_INSTALL_LIBRARY=ON \
-        -DLIBUNWIND_USE_COMPILER_RT=ON \
         -DLIBUNWIND_LIBDIR_SUFFIX=%(libsuffix) \
+        -DLIBUNWIND_USE_COMPILER_RT=ON \
+        -DLLVM_DEFAULT_TARGET_TRIPLE=%(build_platform) \
+        -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF \
+        -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi;libunwind' \
+        -DLLVM_INCLUDE_TESTS=ON \
+        -DLLVM_LIBDIR_SUFFIX=%(libsuffix) \
+        -DLLVM_LIBGCC_EXPLICIT_OPT_IN=ON \
         -DLLVM_LINK_LLVM_DYLIB=ON \
-        -DCMAKE_CXX_COMPILER_TARGET=%(build_platform) \
-        -DCMAKE_ASM_COMPILER_TARGET=%(build_platform)
+        -DLLVM_TARGETS_TO_BUILD="host;AMDGPU;BPF" \
+        -DLLVM_USE_SANITIZER=OFF \
+        $cmake_extra_args
 build       : |
     %cmake_build cxx cxxabi unwind
 install     : |
-    DESTDIR="%(installroot)" %cmake_build install-cxx install-cxxabi install-unwind
+    %cmake_install
 
     # Set some support symlinks
     echo "INPUT(libc++.so.1)" > "%(installroot)/%(libdir)/libc++abi.so"