fix build under newer KConfig by bump cmake min version

3rdparty/lexilla540/lexilla/examples/CheckLexilla/CheckLexilla.c

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+// Lexilla lexer library use example
+/** @file CheckLexilla.c
+ ** Check that Lexilla.h works.
+ **/
+// Copyright 2021 by Neil Hodgson <neilh@scintilla.org>
+// This file is in the public domain.
+// If the public domain is not possible in your location then it can also be used under the same
+// license as Scintilla. https://www.scintilla.org/License.txt
+
+/* Build and run
+
+    Win32
+gcc CheckLexilla.c -I ../../include -o CheckLexilla
+CheckLexilla
+CheckLexilla ../SimpleLexer/SimpleLexer.dll
+
+   Win32 Visual C++
+cl CheckLexilla.c -I ../../include -Fe: CheckLexilla
+CheckLexilla
+CheckLexilla ../SimpleLexer/SimpleLexer.dll
+
+    macOS
+clang CheckLexilla.c -I ../../include -o CheckLexilla
+./CheckLexilla
+./CheckLexilla ../SimpleLexer/SimpleLexer.dylib
+
+    Linux
+gcc CheckLexilla.c -I ../../include -ldl -o CheckLexilla
+./CheckLexilla
+./CheckLexilla ../SimpleLexer/SimpleLexer.so
+
+While principally meant for compilation as C to act as an example of using Lexilla
+from C it can also be built as C++.
+
+Warnings are intentionally shown for the deprecated typedef LexerNameFromIDFn when compiled with
+GCC or Clang or as C++.
+
+*/
+
+#include <stdio.h>
+
+#if defined(_WIN32)
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+#if defined(__cplusplus)
+#include "ILexer.h"
+#endif
+
+#include "Lexilla.h"
+
+#if defined(__cplusplus)
+using namespace Lexilla;
+#endif
+
+#if defined(_WIN32)
+typedef FARPROC Function;
+typedef HMODULE Module;
+#else
+typedef void *Function;
+typedef void *Module;
+#endif
+
+static Function FindSymbol(Module m, const char *symbol) {
+#if defined(_WIN32)
+	return GetProcAddress(m, symbol);
+#else
+	return dlsym(m, symbol);
+#endif
+}
+
+int main(int argc, char *argv[]) {
+	char szLexillaPath[] = "../../bin/" LEXILLA_LIB LEXILLA_EXTENSION;
+	const char *libPath = szLexillaPath;
+	if (argc > 1) {
+		libPath = argv[1];
+	}
+#if defined(_WIN32)
+	Module lexillaLibrary = LoadLibraryA(libPath);
+#else
+	Module lexillaLibrary = dlopen(libPath, RTLD_LAZY);
+#endif
+
+	printf("Opened %s -> %p.\n", libPath, lexillaLibrary);
+	if (lexillaLibrary) {
+		GetLexerCountFn lexerCount = (GetLexerCountFn)FindSymbol(lexillaLibrary, LEXILLA_GETLEXERCOUNT);
+		if (lexerCount) {
+			int nLexers = lexerCount();
+			printf("There are %d lexers.\n", nLexers);
+			GetLexerNameFn lexerName = (GetLexerNameFn)FindSymbol(lexillaLibrary, LEXILLA_GETLEXERNAME);
+			for (int i = 0; i < nLexers; i++) {
+				char name[100] = "";
+				lexerName(i, name, sizeof(name));
+				printf("%s ", name);
+			}
+			printf("\n");
+
+			GetLexerFactoryFn lexerFactory = (GetLexerFactoryFn)FindSymbol(lexillaLibrary, LEXILLA_GETLEXERFACTORY);
+			LexerFactoryFunction lexerFactory4 = lexerFactory(4);	// 4th entry is "as" which is an object lexer so works
+			printf("Lexer factory 4 -> %p.\n", lexerFactory4);
+
+			CreateLexerFn lexerCreate = (CreateLexerFn)FindSymbol(lexillaLibrary, LEXILLA_CREATELEXER);
+			ILexer5 *lexerCpp = lexerCreate("cpp");
+			printf("Created cpp lexer -> %p.\n", lexerCpp);
+
+			LexerNameFromIDFn lexerNameFromID = (LexerNameFromIDFn)FindSymbol(lexillaLibrary, LEXILLA_LEXERNAMEFROMID);
+			if (lexerNameFromID) {
+				const char *lexerNameCpp = lexerNameFromID(3);	// SCLEX_CPP=3
+				if (lexerNameCpp) {
+					printf("Lexer name 3 -> %s.\n", lexerNameCpp);
+				} else {
+					printf("Lexer name 3 not available.\n");
+				}
+			} else {
+				printf("Lexer name from ID not supported.\n");
+			}
+
+			GetLibraryPropertyNamesFn libraryProperties = (GetLibraryPropertyNamesFn)FindSymbol(lexillaLibrary, LEXILLA_GETLIBRARYPROPERTYNAMES);
+			if (libraryProperties) {
+				const char *names = libraryProperties();
+				printf("Property names '%s'.\n", names);
+			} else {
+				printf("Property names not supported.\n");
+			}
+
+			SetLibraryPropertyFn librarySetProperty = (SetLibraryPropertyFn)FindSymbol(lexillaLibrary, LEXILLA_SETLIBRARYPROPERTY);
+			if (librarySetProperty) {
+				librarySetProperty("key", "value");
+			} else {
+				printf("Set property not supported.\n");
+			}
+
+			GetNameSpaceFn libraryNameSpace = (GetLibraryPropertyNamesFn)FindSymbol(lexillaLibrary, LEXILLA_GETNAMESPACE);
+			if (libraryNameSpace) {
+				const char *nameSpace = libraryNameSpace();
+				printf("Name space '%s'.\n", nameSpace);
+			} else {
+				printf("Name space not supported.\n");
+			}
+		}
+	}
+}

3rdparty/lexilla540/lexilla/examples/CheckLexilla/makefile

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+.PHONY: all check clean
+
+INCLUDES = -I ../../include
+EXE = $(if $(windir),CheckLexilla.exe,CheckLexilla)
+
+ifdef windir
+	RM = $(if $(wildcard $(dir $(SHELL))rm.exe), $(dir $(SHELL))rm.exe -f, del /q)
+	CC = gcc
+else
+	LIBS += -ldl
+endif
+
+all: $(EXE)
+
+check: $(EXE)
+	./$(EXE)
+
+clean:
+	$(RM) $(EXE)
+
+$(EXE): *.c
+	$(CC) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $^ $(LIBS) $(LDLIBS) -o $@