cmake find module for scintilla

cmake/FindScintilla.cmake

@@ -0,0 +1,113 @@
+# FindScintilla.cmake
+#
+# This module tries to find Scintilla, and if not found, fetches and builds it using FetchContent.
+#
+# Once done this will define
+#  Scintilla_FOUND        - True if Scintilla was found
+#  Scintilla_LIBRARIES    - List of libraries to link against (e.g., scintilla-qt)
+#  Scintilla_INCLUDE_DIRS - The Scintilla include directories
+
+# Check if Scintilla is already found or if we are in a NO_MODULE situation
+if(Scintilla_FOUND)
+    return()
+endif()
+
+cmake_minimum_required(VERSION 3.16) # FetchContent requires CMake 3.14+, using 3.16 for consistency
+
+include(FetchContent)
+
+FetchContent_Declare(
+    scintilla
+    URL https://www.scintilla.org/scintilla558.zip
+    URL_HASH SHA256=d719ad721fda6cf54094d44c2f40a37b519bfcd36f485f69b88011cb439fb4ef # Placeholder, please update with actual SHA256
+)
+
+FetchContent_MakeAvailable(scintilla)
+
+# Ensure Qt6 and Python3 are found for Scintilla's build
+find_package(Qt6 REQUIRED
+    COMPONENTS Widgets Core5Compat
+)
+
+find_package(Python3 COMPONENTS Interpreter REQUIRED)
+
+# Run WidgetGen.py to generate ScintillaEdit.h and ScintillaEdit.cpp
+# This needs to be done before compiling the Qt wrapper
+add_custom_command(
+    OUTPUT "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.h"
+           "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.cpp"
+    COMMAND ${CMAKE_COMMAND} -E chdir "${scintilla_SOURCE_DIR}/qt/ScintillaEdit"
+            ${Python3_EXECUTABLE} WidgetGen.py
+    DEPENDS "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/WidgetGen.py"
+            "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.h.template"
+            "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.cpp.template"
+    COMMENT "Generating ScintillaEdit.h and ScintillaEdit.cpp"
+)
+
+add_custom_target(scintilla-widgetgen
+    DEPENDS
+        "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.h"
+        "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.cpp"
+)
+
+add_library(scintilla-qt SHARED)
+
+set_target_properties(scintilla-qt PROPERTIES AUTOMOC ON)
+
+# Set C++ standard for this target
+target_compile_features(scintilla-qt PUBLIC cxx_std_17)
+
+file(GLOB_RECURSE SRCS CONFIGURE_DEPENDS
+    "${scintilla_SOURCE_DIR}/include/*.h"
+    "${scintilla_SOURCE_DIR}/src/*.h"
+    "${scintilla_SOURCE_DIR}/src/*.cxx"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEditBase/*.h"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEditBase/*.cpp"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/*.h"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/*.cpp"
+)
+
+target_sources(scintilla-qt
+PRIVATE
+    ${SRCS}
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.h"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit/ScintillaEdit.cpp"
+)
+
+add_dependencies(scintilla-qt scintilla-widgetgen)
+
+target_compile_definitions(scintilla-qt
+PRIVATE
+    -DSCINTILLA_QT=1 -DMAKING_LIBRARY=1
+)
+
+target_include_directories(scintilla-qt
+PUBLIC
+    "${scintilla_SOURCE_DIR}/include"
+    "${scintilla_SOURCE_DIR}/src"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEditBase"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit"
+)
+
+target_link_libraries(scintilla-qt
+PUBLIC
+    Qt::Widgets Qt::Core5Compat
+)
+
+# Create an ALIAS target for modern CMake consumption
+if(NOT TARGET Scintilla::Scintilla)
+    add_library(Scintilla::Scintilla ALIAS scintilla-qt)
+endif()
+
+# Set variables for find_package (for backward compatibility)
+set(Scintilla_FOUND TRUE)
+set(Scintilla_LIBRARIES Scintilla::Scintilla) # Point to the ALIAS target
+set(Scintilla_INCLUDE_DIRS
+    "${scintilla_SOURCE_DIR}/include"
+    "${scintilla_SOURCE_DIR}/src"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEditBase"
+    "${scintilla_SOURCE_DIR}/qt/ScintillaEdit"
+)
+
+# Mark as advanced so it doesn't show up in GUI by default
+mark_as_advanced(Scintilla_FOUND Scintilla_LIBRARIES Scintilla_INCLUDE_DIRS)