BLD: Upgrade CMake version

Author: threecgreen

CHANGELOG.md

@@ -7,15 +7,20 @@
   messages
 - Converting a `v1::SystemMsg` to a `v2::SystemMsg` now sets to `code` to the heartbeat
   value
-- Introduced `kAssetCstrLen` constant containing the size of `asset` field in `InstrumentDefMsg`
+- Introduced `kAssetCstrLen` constant containing the size of `asset` field in
+  `InstrumentDefMsg`
 
 ### Breaking changes
+- Increased the size of `asset` field in `v3::InstrumentDefMsg` from 7 to 11. The
+  `v3::InstrumentDefMsg` message size remains 520 bytes.
+- Set minimum CMake version to 3.24
 - Changed type of `code` field in `SystemMsg` to `SystemCode`
 - Changed type of `code` field in `ErrorMsg` to `ErrorCode`
-- Increased the size of `asset` field in `v3::InstrumentDefMsg` from 7 to 11. The `v3::InstrumentDefMsg` message size remains 520 bytes.
 
 ### Bug fixes
 - Changed `TriState` to a regular enum to handle unexpected values
+- Fixed `ccache` support
+- Changed to explicitly only support being built as a static library
 
 ## 0.33.0 - 2025-04-15
 

CMakeLists.txt

@@ -1,10 +1,15 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24..4.0)
 
 #
 # Project details
 #
 
-project("databento" VERSION 0.33.0 LANGUAGES CXX)
+project(
+  databento
+  VERSION 0.33.0
+  LANGUAGES CXX
+  DESCRIPTION "Official Databento client library"
+)
 string(TOUPPER ${PROJECT_NAME} PROJECT_NAME_UPPERCASE)
 
 #
@@ -83,6 +88,7 @@ endif()
 
 add_library(
   ${PROJECT_NAME}
+  STATIC
   ${headers}
   ${sources}
 )
@@ -101,6 +107,7 @@ message(STATUS "Added all header and implementation files.")
 #
 
 target_compile_features(${PROJECT_NAME} PUBLIC cxx_std_17)
+set_target_properties(${PROJECT_NAME} PROPERTIES CXX_EXTENSIONS OFF)
 include(cmake/CompilerWarnings.cmake)
 set_target_warnings(${PROJECT_NAME})
 include(cmake/Sanitizers.cmake)
@@ -143,19 +150,11 @@ else()
   set(json_version 3.11.3)
   # Required to correctly install nlohmann_json
   set(JSON_Install ON)
-  if(CMAKE_VERSION VERSION_LESS 3.24)
-    FetchContent_Declare(
-      json
-      URL https://github.com/nlohmann/json/releases/download/v${json_version}/json.tar.xz
-    )
-  else()
-    # DOWNLOAD_EXTRACT_TIMESTAMP added in 3.24
-    FetchContent_Declare(
-      json
-      URL https://github.com/nlohmann/json/releases/download/v${json_version}/json.tar.xz
-      DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-    )
-  endif()
+  FetchContent_Declare(
+    json
+    URL https://github.com/nlohmann/json/releases/download/v${json_version}/json.tar.xz
+    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
+  )
   FetchContent_MakeAvailable(json)
   # Ignore compiler warnings in headers
   add_system_include_property(nlohmann_json)
@@ -175,19 +174,11 @@ if(${PROJECT_NAME_UPPERCASE}_USE_EXTERNAL_HTTPLIB)
   endif()
 else()
   set(httplib_version 0.20.0)
-  if(CMAKE_VERSION VERSION_LESS 3.24)
-    FetchContent_Declare(
-      httplib
-      URL https://github.com/yhirose/cpp-httplib/archive/refs/tags/v${httplib_version}.tar.gz
-    )
-  else()
-    # DOWNLOAD_EXTRACT_TIMESTAMP added in 3.24
-    FetchContent_Declare(
-      httplib
-      URL https://github.com/yhirose/cpp-httplib/archive/refs/tags/v${httplib_version}.tar.gz
-      DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-    )
-  endif()
+  FetchContent_Declare(
+    httplib
+    URL https://github.com/yhirose/cpp-httplib/archive/refs/tags/v${httplib_version}.tar.gz
+    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
+  )
   FetchContent_MakeAvailable(httplib)
   # Ignore compiler warnings in headers
   add_system_include_property(httplib)
@@ -207,19 +198,11 @@ if(${PROJECT_NAME_UPPERCASE}_USE_EXTERNAL_DATE)
   endif()
 else()
   set(date_version 3.0.3)
-  if(CMAKE_VERSION VERSION_LESS 3.24)
-    FetchContent_Declare(
-      date_src
-      URL https://github.com/HowardHinnant/date/archive/refs/tags/v${date_version}.tar.gz
-    )
-  else()
-    # DOWNLOAD_EXTRACT_TIMESTAMP added in 3.24
-    FetchContent_Declare(
-      date_src
-      URL https://github.com/HowardHinnant/date/archive/refs/tags/v${date_version}.tar.gz
-      DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-    )
-  endif()
+  FetchContent_Declare(
+    date_src
+    URL https://github.com/HowardHinnant/date/archive/refs/tags/v${date_version}.tar.gz
+    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
+  )
   FetchContent_MakeAvailable(date_src)
   # Ignore compiler warnings in headers
   add_system_include_property(date)

README.md

@@ -9,7 +9,7 @@ The client supports both streaming real-time and historical market data through
 
 ## Usage
 
-The minimum C++ standard is C++17 and the minimum CMake version is 3.14.
+The minimum C++ standard is C++17 and the minimum CMake version is 3.24.
 
 ### Integration
 
@@ -18,7 +18,7 @@ Your `CMakeLists.txt` should look something like the following:
 
 ```cmake
 # CMakeLists.txt
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 project(databento_example)
 include(FetchContent)

cmake/StandardSettings.cmake

@@ -75,7 +75,6 @@ if(${PROJECT_NAME_UPPERCASE}_ENABLE_CCACHE)
   find_program(CCACHE_FOUND ccache)
   if(CCACHE_FOUND)
     message(STATUS "Found and enabled ccache")
-    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
-    set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
+    set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
   endif()
 endif()

examples/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 project(
   ${CMAKE_PROJECT_NAME}Examples

examples/historical/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 add_example_target(batch batch.cpp)
 add_example_target(metadata metadata.cpp)

examples/live/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 add_example_target(live-readme readme.cpp)
 add_example_target(simple simple.cpp)

tests/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 #
 # Project details

tests/cmake_fetch_content/project/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 project(DummyImport LANGUAGES CXX)
 

tests/cmake_import/project/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.24)
 
 project(DummyImport LANGUAGES CXX)