Use FetchContent for identiconpp

.drone.yml

@@ -13,12 +13,6 @@ trigger:
     - tag
 
 steps:
-- name: submodules
-  image: docker:git
-  commands:
-    - git submodule init
-    - git submodule update --recursive
-
 - name: GCC 8 / clang 7
   image: debian:buster-slim
   pull: always

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "dist/identiconpp"]
-	path = dist/identiconpp
-	url = https://schlomp.space/tastytea/identiconpp

CMakeLists.txt

@@ -27,9 +27,25 @@ if(NOT libcryptopp_FOUND)
   pkg_check_modules(libcryptopp REQUIRED IMPORTED_TARGET libcrypto++)
 endif()
 if (LIBRAVATAR_BUNDLED_IDENTICONPP)
-  add_subdirectory(dist/identiconpp)
+  include(FetchContent)
+  FetchContent_Declare(identiconpp
+    GIT_REPOSITORY https://schlomp.space/tastytea/identiconpp.git
+    GIT_TAG 0.7.3
+  )
+  if (NOT CMAKE_VERSION VERSION_LESS 3.14)
+    FetchContent_MakeAvailable(identiconpp)
+  else()
+    FetchContent_GetProperties(identiconpp)
+    if(NOT identiconpp_POPULATED)
+      FetchContent_Populate(identiconpp)
+      add_subdirectory(${identiconpp_SOURCE_DIR} ${identiconpp_BINARY_DIR})
+    endif()
+endif()
+
+  add_library(identiconpp::identiconpp ALIAS identiconpp)
+else()
+  find_package(identiconpp REQUIRED CONFIG)
 endif()
-find_package(identiconpp REQUIRED CONFIG)
 
 find_package(Filesystem REQUIRED COMPONENTS Final Experimental)
 

dist/identiconpp

@@ -1 +0,0 @@
-Subproject commit 9070f154a462abab5edca7b9050ce4f4893d3999