From 26b16023dc639ae354e246458719e4b569bc1d97 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Tue, 3 Dec 2024 22:26:40 +0200
Subject: [PATCH] Add CMake main project support

---
 .gitignore               |  1 +
 CMakeLists.txt           | 69 ++++++++++++++++++++++++++++++++++++++++
 benchmark/CMakeLists.txt | 10 ++++++
 example/CMakeLists.txt   | 16 ++++++++++
 4 files changed, 96 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 benchmark/CMakeLists.txt
 create mode 100644 example/CMakeLists.txt

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..67ec9ac
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/__build__/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e60c29..1ba98f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,8 +23,77 @@ target_link_libraries(boost_hash2
 
 target_compile_features(boost_hash2 INTERFACE cxx_std_11)
 
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+
+  include(CTest) # defines BUILD_TESTING
+  include(FetchContent)
+
+  FetchContent_Declare(boostorg_cmake GIT_REPOSITORY https://github.com/boostorg/cmake GIT_TAG master)
+  FetchContent_MakeAvailable(boostorg_cmake)
+  FetchContent_GetProperties(boostorg_cmake)
+  list(APPEND CMAKE_MODULE_PATH ${boostorg_cmake_SOURCE_DIR}/include)
+
+endif()
+
 if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
 
   add_subdirectory(test)
 
 endif()
+
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+
+  set(deps
+
+  # hash2
+
+  assert
+  config
+  container_hash
+  describe
+  mp11
+
+  # tests
+
+  array
+  core
+  utility
+
+  # benchmark
+
+  unordered
+
+  # example
+
+  endian
+
+  # secondaries
+
+  static_assert
+  throw_exception
+  io
+  preprocessor
+  type_traits
+  predef
+  )
+
+  set(BUILD_TESTING OFF) # Hide cache variable
+
+  list(LENGTH deps n)
+  set(i 0)
+
+  foreach(dep IN LISTS deps)
+
+    math(EXPR i "${i}+1")
+    message(STATUS "Fetching boostorg/${dep} [${i}/${n}]")
+    FetchContent_Declare(boostorg_${dep} GIT_REPOSITORY https://github.com/boostorg/${dep} GIT_TAG master EXCLUDE_FROM_ALL)
+    FetchContent_MakeAvailable(boostorg_${dep})
+
+  endforeach()
+
+  unset(BUILD_TESTING)
+
+  add_subdirectory(benchmark)
+  add_subdirectory(example)
+
+endif()
diff --git a/benchmark/CMakeLists.txt b/benchmark/CMakeLists.txt
new file mode 100644
index 0000000..93368c3
--- /dev/null
+++ b/benchmark/CMakeLists.txt
@@ -0,0 +1,10 @@
+# Copyright 2024 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# https://www.boost.org/LICENSE_1_0.txt
+
+link_libraries(Boost::hash2 Boost::core Boost::unordered)
+
+add_executable(buffer buffer.cpp)
+add_executable(unordered unordered.cpp)
+add_executable(average average.cpp)
+add_executable(keys keys.cpp)
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
new file mode 100644
index 0000000..b2efeb7
--- /dev/null
+++ b/example/CMakeLists.txt
@@ -0,0 +1,16 @@
+# Copyright 2024 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# https://www.boost.org/LICENSE_1_0.txt
+
+link_libraries(Boost::hash2 Boost::unordered Boost::endian)
+
+add_executable(md5sum md5sum.cpp)
+add_executable(hash2sum hash2sum.cpp)
+add_executable(compile_time compile_time.cpp)
+add_executable(compile_time_2 compile_time_2.cpp)
+add_executable(hash_without_seed hash_without_seed.cpp)
+add_executable(hash_with_uint64_seed hash_with_uint64_seed.cpp)
+add_executable(hash_with_byte_seed hash_with_byte_seed.cpp)
+add_executable(hash_with_any_seed hash_with_any_seed.cpp)
+add_executable(hash_32_64 hash_32_64.cpp)
+add_executable(xxh128_from_xxh64 xxh128_from_xxh64.cpp)