From ec852730ec3db94a18807a22db5b0de37354d1ad Mon Sep 17 00:00:00 2001
From: Nicolas Morais <nmorais.st@gmail.com>
Date: Sat, 30 Mar 2024 18:22:05 -0300
Subject: [PATCH] CMake: checks C++ compiler before setting project languages

I could not find a better solution. It seems like the languages must be set before almost everything.
---
 CMakeLists.txt | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01518aa0..3c60429b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,13 @@
 cmake_minimum_required(VERSION 3.4)
 
-project(LibVNCServer VERSION 0.9.14 LANGUAGES C)
+set(PROJECT_LANGUAGES C)
+
+if(NOT ${CMAKE_CXX_COMPILER} STREQUAL "")
+  set(CMAKE_CXX_STANDARD 17)
+  set(PROJECT_LANGUAGES C CXX)
+endif(NOT ${CMAKE_CXX_COMPILER} STREQUAL "")
+
+project(LibVNCServer VERSION 0.9.14 LANGUAGES ${PROJECT_LANGUAGES})
 include(CheckFunctionExists)
 include(CheckSymbolExists)
 include(CheckIncludeFile)
@@ -25,9 +32,6 @@ set(TESTS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/test)
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-if(${CMAKE_CXX_COMPILER} NOT STREQUAL "")
-  set(CMAKE_CXX_STANDARD 17)
-endif(${CMAKE_CXX_COMPILER} NOT STREQUAL "")
 
 if(CMAKE_GENERATOR MATCHES "Unix Makefiles|Ninja")
 # some LSP servers expect compile_commands.json in the project root