From 1235f05af70c3acea7eedb0cbfd726ab4ec357c4 Mon Sep 17 00:00:00 2001
From: Ben Harris <bjh21@bjh21.me.uk>
Date: Mon, 20 Feb 2023 00:33:42 +0000
Subject: [PATCH] Make the HAVE_HF_ITER define target-specific

Leaking HAVE_HF_ITER into the entire build just because fuzzpuzz
wanted it was ugly, and also this needs fewer lines of CMake code.
---
 CMakeLists.txt | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f7bab9b..0937d25 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -279,11 +279,8 @@ if(build_cli_programs)
   write_generated_games_header()
   include(CheckFunctionExists)
   check_function_exists(HF_ITER HAVE_HF_ITER)
-  if(HAVE_HF_ITER)
-    add_definitions(-DHAVE_HF_ITER)
-  endif()
   cliprogram(fuzzpuzz fuzzpuzz.c list.c ${puzzle_sources}
-    COMPILE_DEFINITIONS COMBINED)
+    COMPILE_DEFINITIONS COMBINED $<$<BOOL:${HAVE_HF_ITER}>:HAVE_HF_ITER>)
   target_include_directories(fuzzpuzz PRIVATE ${generated_include_dir})
 endif()