diff --git a/CMake/GifConfig.cmake b/CMake/GifConfig.cmake
index f2b1ec5191..63aadafa52 100644
--- a/CMake/GifConfig.cmake
+++ b/CMake/GifConfig.cmake
@@ -11,7 +11,7 @@
 # ==============================================================================
 # Helper: split checks into include / library macros and a small wrapper
 macro(_nelson_check_gif_include PREFIX)
-  if(EXISTS "${PREFIX}/include/gif_lib.h")
+  if(PREFIX AND EXISTS "${PREFIX}/include/gif_lib.h")
     set(
       GIF_INCLUDE_DIR
       "${PREFIX}/include"
@@ -24,7 +24,7 @@ macro(_nelson_check_gif_include PREFIX)
 endmacro()
 # ==============================================================================
 macro(_nelson_check_gif_library PREFIX)
-  if(EXISTS "${PREFIX}/lib/libgif${CMAKE_SHARED_LIBRARY_SUFFIX}")
+  if(PREFIX AND EXISTS "${PREFIX}/lib/libgif${CMAKE_SHARED_LIBRARY_SUFFIX}")
     set(
       GIF_LIBRARIES
       "${PREFIX}/lib/libgif${CMAKE_SHARED_LIBRARY_SUFFIX}"
@@ -37,10 +37,58 @@ macro(_nelson_check_gif_library PREFIX)
 endmacro()
 # ==============================================================================
 macro(_nelson_check_gif_prefix PREFIX)
-  _nelson_check_gif_include(${PREFIX})
-  _nelson_check_gif_library(${PREFIX})
+  if(PREFIX)
+    _nelson_check_gif_include("${PREFIX}")
+    _nelson_check_gif_library("${PREFIX}")
+  endif()
+endmacro()
+# ==============================================================================
+macro(_nelson_check_gif_include_from_library LIBRARY)
+  if(LIBRARY AND EXISTS "${LIBRARY}")
+    get_filename_component(_nelson_gif_library_dir "${LIBRARY}" DIRECTORY)
+    get_filename_component(_nelson_gif_prefix
+      "${_nelson_gif_library_dir}"
+      DIRECTORY
+    )
+    _nelson_check_gif_include("${_nelson_gif_prefix}")
+  endif()
 endmacro()
 # ==============================================================================
+set(_NELSON_MACOS_SONOMA FALSE)
+if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+  if(CMAKE_SYSTEM_VERSION
+    MATCHES
+    "^23\\."
+    OR
+    CMAKE_HOST_SYSTEM_VERSION
+    MATCHES
+    "^23\\."
+  )
+    set(_NELSON_MACOS_SONOMA TRUE)
+  else()
+    execute_process(
+      COMMAND sw_vers -productVersion
+      OUTPUT_VARIABLE _NELSON_MACOS_VERSION
+      RESULT_VARIABLE _NELSON_SW_VERS_RESULT
+      OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET
+    )
+    if(NOT _NELSON_SW_VERS_RESULT AND _NELSON_MACOS_VERSION MATCHES "^14\\.")
+      set(_NELSON_MACOS_SONOMA TRUE)
+    endif()
+  endif()
+endif()
+if(_NELSON_MACOS_SONOMA)
+  message(STATUS "macOS Sonoma detected: GIF support disabled.")
+  set(WITHOUT_GIF TRUE CACHE BOOL "Disable GIF support" FORCE)
+  unset(GIF_INCLUDE_DIR CACHE)
+  unset(GIF_INCLUDE_DIR)
+  unset(GIF_LIBRARY CACHE)
+  unset(GIF_LIBRARY)
+  unset(GIF_LIBRARIES CACHE)
+  unset(GIF_LIBRARIES)
+  set(GIF_FOUND FALSE CACHE BOOL "GIF library disabled on macOS Sonoma" FORCE)
+endif()
+# ==============================================================================
 # Run environment prefix checks only when GIF support is enabled
 if(NOT WITHOUT_GIF)
   if(DEFINED ENV{IN_NIX_SHELL})
@@ -49,9 +97,31 @@ if(NOT WITHOUT_GIF)
     endif()
   elseif(DEFINED ENV{CONDA_PREFIX})
     _nelson_check_gif_prefix("$ENV{CONDA_PREFIX}")
-  elseif(DEFINED ENV{HOMEBREW_PREFIX})
-    if(NOT GIF_INCLUDE_DIR OR NOT GIF_LIBRARIES)
-      if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+  endif()
+
+  if(CMAKE_SYSTEM_NAME
+    MATCHES
+    "Darwin"
+    AND
+    GIF_INCLUDE_DIR
+    MATCHES
+    "/Library/Frameworks/Mono.framework/Headers"
+  )
+    unset(GIF_INCLUDE_DIR CACHE)
+    unset(GIF_INCLUDE_DIR)
+  endif()
+
+  if(NOT GIF_INCLUDE_DIR OR NOT GIF_LIBRARIES)
+    if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+      if(DEFINED ENV{HOMEBREW_PREFIX})
+        _nelson_check_gif_prefix("$ENV{HOMEBREW_PREFIX}")
+        _nelson_check_gif_prefix("$ENV{HOMEBREW_PREFIX}/opt/giflib")
+      endif()
+      _nelson_check_gif_prefix("/opt/homebrew")
+      _nelson_check_gif_prefix("/opt/homebrew/opt/giflib")
+      _nelson_check_gif_prefix("/usr/local")
+      _nelson_check_gif_prefix("/usr/local/opt/giflib")
+      if(NOT GIF_INCLUDE_DIR OR NOT GIF_LIBRARIES)
         execute_process(
           COMMAND brew --prefix giflib
           OUTPUT_VARIABLE BREW_GIFLIB_PREFIX
@@ -72,6 +142,18 @@ if(NOT WITHOUT_GIF)
   if(NOT GIF_INCLUDE_DIR OR NOT GIF_LIBRARIES)
     include(FindGIF)
     find_package(GIF REQUIRED)
+    if(CMAKE_SYSTEM_NAME
+      MATCHES
+      "Darwin"
+      AND
+      GIF_INCLUDE_DIR
+      MATCHES
+      "/Library/Frameworks/Mono.framework/Headers"
+    )
+      foreach(_nelson_gif_library IN LISTS GIF_LIBRARIES GIF_LIBRARY)
+        _nelson_check_gif_include_from_library("${_nelson_gif_library}")
+      endforeach()
+    endif()
   else()
     set(GIF_FOUND TRUE CACHE BOOL "GIF library found" FORCE)
   endif()
@@ -79,6 +161,24 @@ else()
   set(GIF_FOUND FALSE CACHE BOOL "GIF library disabled" FORCE)
 endif()
 # ==============================================================================
+if(NOT
+  WITHOUT_GIF
+  AND
+  GIF_FOUND
+  AND
+  CMAKE_SYSTEM_NAME
+  MATCHES
+  "Darwin"
+  AND
+  GIF_INCLUDE_DIR
+  MATCHES
+  "/Library/Frameworks/Mono.framework/Headers"
+)
+  message(FATAL_ERROR
+    "Found Mono's incompatible gif_lib.h at ${GIF_INCLUDE_DIR}. Install giflib with Homebrew or set GIF_INCLUDE_DIR/GIF_LIBRARIES to a giflib 5+ installation."
+  )
+endif()
+# ==============================================================================
 if(GIF_FOUND)
   include_directories(BEFORE ${GIF_INCLUDE_DIR})
   message(STATUS "libgif include directory: ${GIF_INCLUDE_DIR}")
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d2a47a9907..ddeb9e6de1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -479,6 +479,26 @@ else()
     find_package(OpenBLAS)
     find_package(BLAS)
     find_package(LAPACK)
+    if(NOT BLAS_FOUND)
+      find_library(
+        NELSON_BLAS_LIBRARY
+        NAMES blas
+        PATHS /lib /lib64 /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64)
+      if(NELSON_BLAS_LIBRARY)
+        set(BLAS_FOUND TRUE)
+        set(BLAS_LIBRARIES "${NELSON_BLAS_LIBRARY}")
+      endif()
+    endif()
+    if(NOT LAPACK_FOUND)
+      find_library(
+        NELSON_LAPACK_LIBRARY
+        NAMES lapack
+        PATHS /lib /lib64 /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64)
+      if(NELSON_LAPACK_LIBRARY)
+        set(LAPACK_FOUND TRUE)
+        set(LAPACK_LIBRARIES "${NELSON_LAPACK_LIBRARY}")
+      endif()
+    endif()
     find_package(LAPACKE)
     if(OpenBLAS_FOUND)
       if(CMAKE_SYSTEM_NAME