From 5ffca108a6ebe0395627846b66437c53c81a88f8 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Sat, 23 Oct 2021 23:35:30 +0200
Subject: CMakeLists.txt: Check for presence of gtk-doc executable if
 -DENABLE_GTKDOC=ON.

 Fixes https://github.com/AyatanaIndicators/libayatana-appindicator/issues/15
---
 CMakeLists.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 232af6a..7aa1881 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,14 @@ endif()
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(PROJECT_DEPS REQUIRED ${DEPS})
 
+if (ENABLE_GTKDOC)
+    find_program (GTKDOC "gtk-doc")
+    if (NOT GTKDOC_FOUND)
+        message(WARNING "Building the gtk-doc API documentation is enabled, but the gtk-doc executable has not been found.  Disabling API documentation building, although requested.")
+        set (ENABLE_GTKDOC OFF)
+    endif()
+endif()
+
 # Set global variables
 
 include(GNUInstallDirs)
-- 
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