build: support preinstalled ftxui and fmt

CMakeLists.txt

@@ -25,18 +25,22 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 
 include(FetchContent)
+set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
 
 # -------------------------- Fetech ftxui ------------------------------- #
 
-set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
-FetchContent_Declare(
-  ftxui
-  GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
-  GIT_TAG v5.0.0)
-FetchContent_GetProperties(ftxui)
-if(NOT ftxui_POPULATED)
-  FetchContent_Populate(ftxui)
-  add_subdirectory(${ftxui_SOURCE_DIR} ${ftxui_BINARY_DIR} EXCLUDE_FROM_ALL)
+find_package(ftxui 5)
+if(NOT ftxui_FOUND)
+  message(STATUS "ftxui Not found... fetching")
+  FetchContent_Declare(
+    ftxui
+    GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
+    GIT_TAG v5.0.0)
+  FetchContent_GetProperties(ftxui)
+  if(NOT ftxui_POPULATED)
+    FetchContent_Populate(ftxui)
+    add_subdirectory(${ftxui_SOURCE_DIR} ${ftxui_BINARY_DIR} EXCLUDE_FROM_ALL)
+  endif()
 endif()
 
 # --------------------------------- boost -------------------------------- #
@@ -62,14 +66,18 @@ find_package(LibGit2 3 REQUIRED)
 
 # ------------------------------- Fetch FMT ------------------------------ #
 
-FetchContent_Declare(
-  fmt
-  GIT_REPOSITORY https://github.com/fmtlib/fmt
-  GIT_TAG 9.1.0)
-FetchContent_GetProperties(fmt)
-if(NOT fmt_POPULATED)
-  FetchContent_Populate(fmt)
-  add_subdirectory(${fmt_SOURCE_DIR} ${fmt_BINARY_DIR} EXCLUDE_FROM_ALL)
+find_package(fmt 9)
+if(NOT fmt_FOUND)
+  message(STATUS "fmt Not found... fetching")
+  FetchContent_Declare(
+    fmt
+    GIT_REPOSITORY https://github.com/fmtlib/fmt
+    GIT_TAG 9.1.0)
+  FetchContent_GetProperties(fmt)
+  if(NOT fmt_POPULATED)
+    FetchContent_Populate(fmt)
+    add_subdirectory(${fmt_SOURCE_DIR} ${fmt_BINARY_DIR} EXCLUDE_FROM_ALL)
+  endif()
 endif()
 
 # --------------------------------- tests -------------------------------- #