From 3637a87f986cb64ddc1bde3551e29894ab18500b Mon Sep 17 00:00:00 2001
From: Robert Underwood <rr.underwood94@gmail.com>
Date: Wed, 3 Jun 2020 12:48:33 -0400
Subject: [PATCH] Don't require ctags unless we ask for it

Previously this caused build failures if the user had a bad version of
ctags.  Don't build with it.
---
 CMakeLists.txt | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4fd4014..d764a44 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,13 +36,16 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
 #generate tags for the project if tags exist
-find_program(TAGS ctags)
-if(TAGS)
-	add_custom_target(tags ALL
-    COMMAND ${TAGS} --exclude=${CMAKE_BINARY_DIR} -f ${CMAKE_BINARY_DIR}/tags --c++-kinds=+p --fields=+iaS -R
-		COMMENT Generating Tag files
-		WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-		)
+option(BUILD_CTAGS "enable ctags generation target" OFF)
+if(BUILD_CTAGS)
+  find_program(TAGS ctags)
+  if(TAGS)
+    add_custom_target(tags ALL
+      COMMAND ${TAGS} --exclude=${CMAKE_BINARY_DIR} -f ${CMAKE_BINARY_DIR}/tags --c++-kinds=+p --fields=+iaS -R
+      COMMENT Generating Tag files
+      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+      )
+  endif()
 endif()
 
 option(BUILD_SHARED_LIBS "build shared libraries over static libraries" ON)
-- 
2.24.2 (Apple Git-127)