support unstable c api

CMakeLists.txt

@@ -3,19 +3,23 @@ cmake_minimum_required(VERSION 2.8)
 ###
 # Configuration
 ###
-if(NOT DEFINED MINIMUM_DUCKDB_VERSION_MAJOR OR
-        NOT DEFINED MINIMUM_DUCKDB_VERSION_MINOR OR
-        NOT DEFINED MINIMUM_DUCKDB_VERSION_PATCH)
-    message(FATAL_ERROR "DuckDB minimum version is required")
+if(NOT DEFINED TARGET_DUCKDB_VERSION_MAJOR OR
+        NOT DEFINED TARGET_DUCKDB_VERSION_MINOR OR
+        NOT DEFINED TARGET_DUCKDB_VERSION_PATCH)
+    message(FATAL_ERROR "DuckDB target version is required")
 endif()
 if(NOT DEFINED EXTENSION_NAME)
     message(FATAL_ERROR "DuckDB extension name is required")
 endif()
-add_definitions(-DDUCKDB_EXTENSION_API_VERSION_MAJOR=${MINIMUM_DUCKDB_VERSION_MAJOR})
-add_definitions(-DDUCKDB_EXTENSION_API_VERSION_MINOR=${MINIMUM_DUCKDB_VERSION_MINOR})
-add_definitions(-DDUCKDB_EXTENSION_API_VERSION_PATCH=${MINIMUM_DUCKDB_VERSION_PATCH})
+add_definitions(-DDUCKDB_EXTENSION_API_VERSION_MAJOR=${TARGET_DUCKDB_VERSION_MAJOR})
+add_definitions(-DDUCKDB_EXTENSION_API_VERSION_MINOR=${TARGET_DUCKDB_VERSION_MINOR})
+add_definitions(-DDUCKDB_EXTENSION_API_VERSION_PATCH=${TARGET_DUCKDB_VERSION_PATCH})
 add_definitions(-DDUCKDB_EXTENSION_NAME=${EXTENSION_NAME})
 
+if (DEFINED DUCKDB_EXTENSION_API_VERSION_UNSTABLE)
+    add_definitions(-DDUCKDB_EXTENSION_API_VERSION_UNSTABLE=${DUCKDB_EXTENSION_API_VERSION_UNSTABLE})
+endif()
+
 ###
 # Build
 ###

Makefile

@@ -4,10 +4,13 @@ PROJ_DIR := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 
 # Main extension configuration
 EXTENSION_NAME=capi_quack
-MINIMUM_DUCKDB_VERSION_MAJOR=0
-MINIMUM_DUCKDB_VERSION_MINOR=0
-MINIMUM_DUCKDB_VERSION_PATCH=1
-MINIMUM_DUCKDB_VERSION=v$(MINIMUM_DUCKDB_VERSION_MAJOR).$(MINIMUM_DUCKDB_VERSION_MINOR).$(MINIMUM_DUCKDB_VERSION_PATCH)
+TARGET_DUCKDB_VERSION_MAJOR=1
+TARGET_DUCKDB_VERSION_MINOR=2
+TARGET_DUCKDB_VERSION_PATCH=0
+TARGET_DUCKDB_VERSION=v$(TARGET_DUCKDB_VERSION_MAJOR).$(TARGET_DUCKDB_VERSION_MINOR).$(TARGET_DUCKDB_VERSION_PATCH)
+
+# Set to 1 to target the unstable C API.
+USE_UNSTABLE_C_API=0
 
 all: configure release
 

duckdb_capi/README.md

@@ -1,13 +1,13 @@
 # DuckDB C API Headers
-This directory contains the C API headers of DuckDB. These headers should generally match the `MINIMUM_DUCKDB_VERSION` 
+This directory contains the C API headers of DuckDB. These headers should generally match the `TARGET_DUCKDB_VERSION` 
 that is specified in the `Makefile`. Note that these headers can be updated automatically 
-to match the `MINIMUM_DUCKDB_VERSION` makefile variable by running (assuming the default makefile setup):
+to match the `TARGET_DUCKDB_VERSION` makefile variable by running (assuming the default makefile setup):
 
 ```shell
 make update_duckdb_headers
 ```
 
 Of course manually updating the headers is also fine, just make sure that the headers are always from the same 
-DuckDB version and that they are not from a later release of DuckDB than is specified in the `MINIMUM_DUCKDB_VERSION`
-build variable. Using headers from an older version than `MINIMUM_DUCKDB_VERSION` is allowed, but you probably don't want
+DuckDB version and that they are not from a later release of DuckDB than is specified in the `TARGET_DUCKDB_VERSION`
+build variable. Using headers from an older version than `TARGET_DUCKDB_VERSION` is allowed, but you probably don't want
 that.