From e4f408eb4aad7fb035847616debe68fe115e2ae4 Mon Sep 17 00:00:00 2001
From: "Travis A. Everett" <travis.a.everett@gmail.com>
Date: Tue, 16 Oct 2018 19:40:13 -0500
Subject: sqlite3: require sqlite >= 3.9.0

The generated schema is malformed in versions below 3.9.0.
---
 CMakeLists.txt          |  5 ++++-
 cmake/FindSQLite3.cmake | 10 +++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e0fb55..45c2f2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,7 +86,10 @@ find_package(BISON REQUIRED)
 find_package(Threads)
 
 if (sqlite3)
-    find_package(SQLite3 REQUIRED)
+  find_package(SQLite3 REQUIRED)
+  if (SQLITE3_VERSION VERSION_LESS 3.9.0)
+    message(SEND_ERROR "Doxygen requires at least sqlite3 version 3.9.0 (installed: ${SQLITE3_VERSION})")
+  endif()
 endif()
 
 find_package(Iconv REQUIRED)
diff --git a/cmake/FindSQLite3.cmake b/cmake/FindSQLite3.cmake
index 77b8eb4..45cc212 100644
--- a/cmake/FindSQLite3.cmake
+++ b/cmake/FindSQLite3.cmake
@@ -71,8 +71,16 @@ else (SQLITE3_LIBRARIES AND SQLITE3_INCLUDE_DIRS)
   endif (SQLITE3_INCLUDE_DIRS AND SQLITE3_LIBRARIES)
 
   if (SQLITE3_FOUND)
+
+    # Extract version from header file
+    find_file(SQLITE3_HEADER "sqlite3.h" HINTS ${SQLITE3_INCLUDE_DIRS})
+    if(SQLITE3_HEADER)
+      file(STRINGS "${SQLITE3_HEADER}" _DEF_TMP REGEX "^#define SQLITE_VERSION +\\\"[^\\\"]+\\\"")
+      string (REGEX REPLACE ".*\\\"(([0-9]+[.]?)+).*" "\\1" SQLITE3_VERSION "${_DEF_TMP}")
+    endif (SQLITE3_HEADER)
+
     if (NOT Sqlite3_FIND_QUIETLY)
-      message(STATUS "Found Sqlite3: ${SQLITE3_LIBRARIES}")
+      message(STATUS "Found Sqlite3: ${SQLITE3_LIBRARIES} (found version \"${SQLITE3_VERSION}\")")
     endif (NOT Sqlite3_FIND_QUIETLY)
   else (SQLITE3_FOUND)
     if (Sqlite3_FIND_REQUIRED)
-- 
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