Use catch via FetchContent

Fixes #111 and #112.

CMakeLists.txt

@@ -2,7 +2,7 @@
 # This file is subject to the license terms in the LICENSE file
 # found in the top-level directory of this distribution.
 
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.11)
 project(cppast VERSION 0.0)
 
 # options

external/external.cmake

@@ -46,6 +46,7 @@ if(build_tool)
     execute_process(COMMAND git submodule update --init -- external/cxxopts
                     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 
+    set(CXXOPTS_BUILD_TESTS OFF)
     add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/external/cxxopts EXCLUDE_FROM_ALL)
 endif()
 

test/CMakeLists.txt

@@ -2,11 +2,11 @@
 # This file is subject to the license terms in the LICENSE file
 # found in the top-level directory of this distribution.
 
-# download catch
-if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/catch.hpp)
-    file(DOWNLOAD https://raw.githubusercontent.com/catchorg/Catch2/v2.x/single_include/catch2/catch.hpp
-            ${CMAKE_CURRENT_BINARY_DIR}/catch.hpp)
-endif()
+# Fetch catch.
+message(STATUS "Fetching catch")
+include(FetchContent)
+FetchContent_Declare(catch URL https://github.com/catchorg/Catch2/archive/v2.13.4.zip)
+FetchContent_MakeAvailable(catch)
 
 set(tests
         code_generator.cpp
@@ -42,9 +42,8 @@ foreach(file ${files})
 endforeach()
 
 add_executable(cppast_test test.cpp test_parser.hpp ${tests})
-target_include_directories(cppast_test PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
-target_include_directories(cppast_test PRIVATE ${CMAKE_CURRENT_LIST_DIR}/../src)
-target_link_libraries(cppast_test PUBLIC cppast)
+target_include_directories(cppast_test PRIVATE ${CMAKE_CURRENT_LIST_DIR}/../src ${CMAKE_CURRENT_BINARY_DIR})
+target_link_libraries(cppast_test PUBLIC cppast Catch2)
 target_compile_definitions(cppast_test PUBLIC CPPAST_INTEGRATION_FILE="${CMAKE_CURRENT_SOURCE_DIR}/integration.cpp"
                                               CPPAST_COMPILE_COMMANDS="${CMAKE_BINARY_DIR}")
 

test/cpp_token.cpp

@@ -4,7 +4,7 @@
 
 #include <cppast/cpp_token.hpp>
 
-#include <catch.hpp>
+#include <catch2/catch.hpp>
 
 #include <algorithm>
 #include <initializer_list>

test/libclang_parser.cpp

@@ -2,7 +2,7 @@
 // This file is subject to the license terms in the LICENSE file
 // found in the top-level directory of this distribution.
 
-#include <catch.hpp>
+#include <catch2/catch.hpp>
 
 #include <cppast/libclang_parser.hpp>
 

test/parser.cpp

@@ -4,7 +4,7 @@
 
 #include <cppast/parser.hpp>
 
-#include <catch.hpp>
+#include <catch2/catch.hpp>
 
 using namespace cppast;
 

test/preprocessor.cpp

@@ -1,4 +1,4 @@
-#include <catch.hpp>
+#include <catch2/catch.hpp>
 #include <fstream>
 
 #include "libclang/preprocessor.hpp"

test/test.cpp

@@ -3,4 +3,4 @@
 // found in the top-level directory of this distribution.
 
 #define CATCH_CONFIG_MAIN
-#include <catch.hpp>
+#include <catch2/catch.hpp>

test/test_parser.hpp

@@ -7,7 +7,7 @@
 
 #include <fstream>
 
-#include <catch.hpp>
+#include <catch2/catch.hpp>
 
 #include <cppast/code_generator.hpp>
 #include <cppast/cpp_class.hpp>