diff --git a/package/srcsax.cmake b/package/srcsax.cmake
index ee53076..3dabcc5 100644
--- a/package/srcsax.cmake
+++ b/package/srcsax.cmake
@@ -1,17 +1,13 @@
 # SPDX-License-Identifier: GPL-3.0-only
 
-include(FetchContent)
-FetchContent_Declare(srcsax
-    GIT_REPOSITORY https://github.com/srcML/srcSAX.git
-    GIT_TAG 9d1bf2fee324e2ae50395bfcad56cca92b0edbd1
-)
+set(INCLUDE_UNIT_TESTS OFF)
+add_subdirectory(srcSAX-9d1bf2fee324e2ae50395bfcad56cca92b0edbd1)
 
 # Keep srcSAX's build options and directory settings local to its build.
 function(srcml_add_srcsax)
     set(INCLUDE_UNIT_TESTS OFF)
     set(INCLUDE_EXAMPLES OFF)
     set(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME DEVLIBS)
-    FetchContent_MakeAvailable(srcsax)
 endfunction()
 
 srcml_add_srcsax()
diff --git a/src/client/CMakeLists.txt b/src/client/CMakeLists.txt
index 11f54f4..7ebc7d4 100644
--- a/src/client/CMakeLists.txt
+++ b/src/client/CMakeLists.txt
@@ -12,6 +12,7 @@ include(macos-libarchive.cmake)
 find_package(LibArchive 3 REQUIRED)
 find_package(CURL REQUIRED)
 find_package(Threads REQUIRED)
+find_package(CLI11 REQUIRED)
 
 # rpath needs help on macos
 # Should be in a preset, but needed for all builds
@@ -23,23 +24,9 @@ if(APPLE)
     list(APPEND CMAKE_INSTALL_RPATH "/usr/local/lib")
 endif()
 
-include(FetchContent)
-FetchContent_Declare(cli11
-  URL https://github.com/CLIUtils/CLI11/releases/download/v2.7.0/CLI11.hpp
-  DOWNLOAD_NO_EXTRACT TRUE
-)
-FetchContent_MakeAvailable(cli11)
-add_library(cli11 INTERFACE IMPORTED)
-target_include_directories(cli11 SYSTEM INTERFACE ${cli11_SOURCE_DIR})
-
 # ctpl_stl external include
-include(FetchContent)
-FetchContent_Declare(ctpl_stl_src
-    GIT_REPOSITORY https://github.com/vit-vit/CTPL.git
-    GIT_TAG        v.0.0.2
-    GIT_SHALLOW    TRUE
-)
-FetchContent_MakeAvailable(ctpl_stl_src)
+# Pick up ctpl_stl.h put into ctpl/ at the root of this project.
+set(ctpl_stl_src_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../ctpl")
 set(MARKER_FILE "${ctpl_stl_src_SOURCE_DIR}/ctpl_stl_patched.marker")
 if(NOT EXISTS ${MARKER_FILE})
     message(STATUS "Patching CTPL sources")
@@ -60,12 +47,8 @@ add_library(ctpl_stl INTERFACE IMPORTED)
 target_include_directories(ctpl_stl SYSTEM INTERFACE ${ctpl_stl_src_SOURCE_DIR})
 
 # clip cross-platform clipboard library
-include(FetchContent)
-FetchContent_Declare(clip
-    GIT_REPOSITORY https://github.com/dacap/clip.git
-    GIT_TAG        v1.15
-    GIT_SHALLOW    TRUE
-)
+#find_package(clip REQUIRED PATHS "${CMAKE_CURRENT_SOURCE_DIR}/../../clip-1.15")
+add_subdirectory(clip-1.15)
 # only text support
 set(CLIP_ENABLE_IMAGE OFF CACHE BOOL "" FORCE)
 set(CLIP_EXAMPLES OFF CACHE BOOL "" FORCE)
@@ -74,7 +57,6 @@ set(CLIP_INSTALL OFF CACHE BOOL "" FORCE)
 # Scope BUILD_SHARED_LIBS to clip only so it builds statically
 block()
     set(BUILD_SHARED_LIBS OFF)
-    FetchContent_MakeAvailable(clip)
 endblock()
 
 # On Linux, clip links libxcb, which adds a runtime dependency on libxcb.so.1.
@@ -104,7 +86,7 @@ endif()
 file(GLOB CLIENT_SOURCE *.hpp *.cpp)
 add_executable(srcml ${CLIENT_SOURCE})
 target_include_directories(srcml BEFORE PRIVATE .)
-target_link_libraries(srcml PRIVATE srcML::LibsrcML LibArchive::LibArchive CURL::libcurl Threads::Threads cli11 ctpl_stl clip)
+target_link_libraries(srcml PRIVATE srcML::LibsrcML LibArchive::LibArchive CURL::libcurl Threads::Threads CLI11 ctpl_stl clip)
 
 # Put executable in bin directory
 set_target_properties(srcml PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
diff --git a/src/client/srcml_cli.cpp b/src/client/srcml_cli.cpp
index de0dbe3..6af3bfa 100644
--- a/src/client/srcml_cli.cpp
+++ b/src/client/srcml_cli.cpp
@@ -12,7 +12,7 @@
 #include <SRCMLStatus.hpp>
 #include <CPUCount.hpp>
 #include <algorithm>
-#include <CLI11.hpp>
+#include <CLI/CLI.hpp>
 #include <string_view>
 
 using namespace ::std::literals::string_view_literals;
diff --git a/src/parser/CMakeLists.txt b/src/parser/CMakeLists.txt
index 166c3b2..cffd89c 100644
--- a/src/parser/CMakeLists.txt
+++ b/src/parser/CMakeLists.txt
@@ -10,28 +10,15 @@
 option(SRCML_DEBUG_PARSER "Enable parser debugging output" OFF)
 
 # TinySHA1 external include
-include(FetchContent)
-FetchContent_Declare(TinySHA1
-  GIT_REPOSITORY https://github.com/mohaps/tinysha1
-  GIT_TAG        2795aa8de91b1797defdfbff61ed93b22b5ced81
-  GIT_SHALLOW    TRUE
-)
-FetchContent_MakeAvailable(TinySHA1)
-add_library(TinySHA1 INTERFACE IMPORTED)
-target_include_directories(TinySHA1 INTERFACE ${tinysha1_SOURCE_DIR})
+# Just pick up TinySHA1.hpp put into this directory.
 
 find_package(LibXml2 REQUIRED)
 find_package(Iconv REQUIRED)
 find_package(Java COMPONENTS Runtime REQUIRED)
 
 # Setup ANTLR 2.7 library
-include(FetchContent)
-FetchContent_Declare(antlrsrc
-    URL https://www.antlr2.org/download/antlr-2.7.7.tar.gz
-    URL_HASH MD5=01cc9a2a454dd33dcd8c856ec89af090
-)
-# Fetch the content using previously declared details
-FetchContent_MakeAvailable(antlrsrc)
+# Pick up antlr-2.7.7.tar.gz extracted in root of this project.
+set(antlrsrc_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../antlr-2.7.7")
 # Custom marker file to check if modifications have been made
 set(MARKER_FILE "${antlrsrc_SOURCE_DIR}/antlr_patched.marker")
 # Fetch and modify only once
@@ -102,7 +89,6 @@ set_target_properties(parser PROPERTIES POSITION_INDEPENDENT_CODE ON)
 target_include_directories(parser SYSTEM PUBLIC ${antlrsrc_SOURCE_DIR}/lib/cpp)
 target_include_directories(parser PRIVATE . ${CMAKE_GENERATED_SOURCE_DIR} PUBLIC . SYSTEM PUBLIC ${CMAKE_GENERATED_SOURCE_DIR})
 target_link_libraries(parser PRIVATE LibXml2::LibXml2 antlr)
-target_include_directories(parser PRIVATE $<TARGET_PROPERTY:TinySHA1,INTERFACE_INCLUDE_DIRECTORIES>)
 if(SRCML_DEBUG_PARSER)
     set_source_files_properties(${CMAKE_GENERATED_SOURCE_DIR}/srcMLParser.cpp PROPERTIES COMPILE_DEFINITIONS SRCML_DEBUG_PARSER)
 endif()