From 8c2d8fc60306a8edd21182a1f5f267a7aca55763 Mon Sep 17 00:00:00 2001
From: James Hilliard <james.hilliard1@gmail.com>
Date: Sun, 29 Jan 2023 21:18:28 -0700
Subject: [PATCH] CMake: don't enable CXX unless building tests/benchmarks

We only need CXX support when building tests/benchmarks.

Fixes:
CMake Error at CMakeLists.txt:4 (PROJECT):
  No CMAKE_CXX_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
[Upstream status:
https://github.com/Maratyszcza/FXdiv/pull/3]
---
 CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bcae6b5..c75f558 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 3.5 FATAL_ERROR)
 
 # ---[ Project
-PROJECT(FXdiv C CXX)
+PROJECT(FXdiv C)
 
 # ---[ Options.
 OPTION(FXDIV_USE_INLINE_ASSEMBLY "Allow use of inline assembly in FXdiv" OFF)
@@ -16,6 +16,10 @@ ENDIF()
 # ---[ CMake options
 INCLUDE(GNUInstallDirs)
 
+IF(FXDIV_BUILD_TESTS OR FXDIV_BUILD_BENCHMARKS)
+  ENABLE_LANGUAGE(CXX)
+ENDIF()
+
 IF(FXDIV_BUILD_TESTS)
   ENABLE_TESTING()
 ENDIF()
-- 
2.34.1