From https://github.com/winterheart/aseprite/tree/v1.3.16.1-unbundle
From: "Azamat H. Hackimov" <azamat.hackimov@gmail.com>
Date: Tue, 2 Jan 2024 20:00:12 +0300
Subject: [PATCH 4/7] Use shared fmt library

Added option -DUSE_SHARED_FMT
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,7 @@ enable_testing()
 
 option(USE_SHARED_CMARK   "Use your installed copy of cmark" off)
 option(USE_SHARED_CURL    "Use your installed copy of curl" off)
+option(USE_SHARED_FMT     "Use your installed copy of libfmt" off)
 option(USE_SHARED_GIFLIB  "Use your installed copy of giflib" off)
 option(USE_SHARED_JSON11  "Use your installed copy of json11" off)
 option(USE_SHARED_ZLIB    "Use your installed copy of zlib" off)
@@ -226,6 +227,10 @@ if(NOT USE_SHARED_CURL)
   set(CURL_STATICLIB ON BOOL)
 endif()
 
+if(USE_SHARED_FMT)
+  find_package(fmt REQUIRED)
+endif()
+
 # zlib
 if(USE_SHARED_ZLIB)
   find_package(ZLIB REQUIRED)
--- a/third_party/CMakeLists.txt
+++ b/third_party/CMakeLists.txt
@@ -115,7 +115,9 @@ if(NOT USE_SHARED_HARFBUZZ AND NOT LAF_BACKEND STREQUAL "skia")
 endif()
 
 add_subdirectory(simpleini)
-add_subdirectory(fmt)
+if(NOT USE_SHARED_FMT)
+  add_subdirectory(fmt)
+endif()
 
 # Add cmark without tests
 if(NOT USE_SHARED_CMARK)
-- 
2.51.2