diff --git a/srcpkgs/imhex/patches/fix-lto-llvm-demangle.patch b/srcpkgs/imhex/patches/fix-lto-llvm-demangle.patch
new file mode 100644
index 00000000000000..9951d21e702091
--- /dev/null
+++ b/srcpkgs/imhex/patches/fix-lto-llvm-demangle.patch
@@ -0,0 +1,29 @@
+From 135448cacc2ddbdb00580565aba870cf6be76124 Mon Sep 17 00:00:00 2001
+From: Roger Freitas Pereira <roger_freitas@live.com>
+Date: Mon, 29 Dec 2025 05:16:04 -0300
+Subject: [PATCH] fix: link LLVMDemangle when building with LTO and system LLVM
+
+---
+ lib/libimhex/CMakeLists.txt | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/lib/libimhex/CMakeLists.txt b/lib/libimhex/CMakeLists.txt
+index 1977cf8..1814bcb 100644
+--- a/lib/libimhex/CMakeLists.txt
++++ b/lib/libimhex/CMakeLists.txt
+@@ -137,6 +137,12 @@ generate_export_header(libimhex)
+ 
+ target_include_directories(libimhex ${LIBIMHEX_LIBRARY_TYPE} include ${XDGPP_INCLUDE_DIRS} ${LLVM_INCLUDE_DIRS} ${FMT_INCLUDE_DIRS})
+ 
++if (IMHEX_ENABLE_LTO AND USE_SYSTEM_LLVM)
++    target_link_options(libimhex PRIVATE
++        "-Wl,--whole-archive" "-l:libLLVMDemangle.a" "-Wl,--no-whole-archive"
++    )
++endif()
++
+ if (NOT IMHEX_EXTERNAL_PLUGIN_BUILD)
+     if (WIN32)
+         set_target_properties(libimhex PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
+-- 
+2.51.2
+
diff --git a/srcpkgs/imhex/template b/srcpkgs/imhex/template
index 371aca75fcf427..17a9792f165504 100644
--- a/srcpkgs/imhex/template
+++ b/srcpkgs/imhex/template
@@ -9,7 +9,7 @@ configure_args="-DIMHEX_OFFLINE_BUILD=ON -DIMHEX_STRIP_RELEASE=OFF
  -DUSE_SYSTEM_FMT=ON -DUSE_SYSTEM_LLVM=ON -DUSE_SYSTEM_CAPSTONE=ON
  -DUSE_SYSTEM_YARA=ON -DUSE_SYSTEM_NLOHMANN_JSON=ON
  -DIMHEX_ENABLE_UNIT_TESTS=ON -DIMHEX_COMPRESS_DEBUG_INFO=OFF
- -DIMHEX_STRICT_WARNINGS=OFF -DIMHEX_ENABLE_LTO=OFF"
+ -DIMHEX_STRICT_WARNINGS=OFF -DIMHEX_ENABLE_LTO=$(vopt_if lto ON OFF)"
 hostmakedepends="pkg-config clang-tools-extra18"
 makedepends="libcurl-devel fmt-devel llvm18-devel jansson-devel yara-devel json-c++
  freetype-devel glfw-devel gtk+3-devel python3-devel file-devel mbedtls-devel
@@ -26,6 +26,9 @@ checksum="cd3531066a41dde1f0751e5d3146a936897df35ad5ba1fa49a9f3ace88e6901d
 patch_args="-Np1 -d $build_wrksrc"
 python_version=3
 
+build_options="lto"
+desc_option_lto="Enable LTO (Link Time Optimization)" # LTO requires system LLVM built with LTO
+
 subpackages="imhex-plugin-sdk imhex-patterns"
 
 if [ "$XBPS_TARGET_WORDSIZE" = 32 ]; then