From e4d3d38227906724f8ba0db2f23d4a3e9a07d636 Mon Sep 17 00:00:00 2001
From: tsteven4 <13596209+tsteven4@users.noreply.github.com>
Date: Mon, 20 Apr 2020 18:32:02 -0600
Subject: [PATCH] add missing include file to build.

---
 CMakeLists.txt | 1 +
 GPSBabel.pro   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb425a433..d7c64e7e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -180,6 +180,7 @@ set(HEADERS
   src/core/datetime.h
   src/core/file.h
   src/core/logging.h
+  src/core/optional.h
   src/core/textstream.h
   src/core/usasciicodec.h
   src/core/xmlstreamwriter.h
diff --git a/GPSBabel.pro b/GPSBabel.pro
index 21e85825e..691b784ec 100644
--- a/GPSBabel.pro
+++ b/GPSBabel.pro
@@ -165,6 +165,7 @@ HEADERS =  \
 	src/core/datetime.h \
 	src/core/file.h \
 	src/core/logging.h \
+	src/core/optional.h \
 	src/core/textstream.h \
 	src/core/usasciicodec.h \
 	src/core/xmlstreamwriter.h \
-- 
2.30.2