From ac250b0f86f9364d8610c214f8ee7ae09e4ebd35 Mon Sep 17 00:00:00 2001
From: Tamas Kenez <address@hidden>
Date: Mon, 23 Nov 2015 01:48:36 +0100
Subject: [PATCH] [cmake] make FindHarfbuzz observe the REQUIRED option

---
 builds/FindHarfBuzz.cmake | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/builds/FindHarfBuzz.cmake b/builds/FindHarfBuzz.cmake
index 8440c7b..55d9264 100644
--- a/builds/FindHarfBuzz.cmake
+++ b/builds/FindHarfBuzz.cmake
@@ -44,15 +44,26 @@ find_library(HARFBUZZ_LIBRARIES NAMES harfbuzz
 
 # HarfBuzz 0.9.18 split ICU support into a separate harfbuzz-icu library.
 if ("${PC_HARFBUZZ_VERSION}" VERSION_GREATER "0.9.17")
-    pkg_check_modules(PC_HARFBUZZ_ICU harfbuzz-icu>=0.9.18 REQUIRED)
+    if (HarfBuzz_FIND_REQUIRED)
+        set(_HARFBUZZ_REQUIRED REQUIRED)
+    else()
+        set(_HARFBUZZ_REQUIRED "")
+    endif()
+    pkg_check_modules(PC_HARFBUZZ_ICU harfbuzz-icu>=0.9.18 ${_HARFBUZZ_REQUIRED})
     find_library(HARFBUZZ_ICU_LIBRARIES NAMES harfbuzz-icu
         HINTS ${PC_HARFBUZZ_ICU_LIBRARY_DIRS} ${PC_HARFBUZZ_ICU_LIBDIR}
     )
-    list(APPEND HARFBUZZ_LIBRARIES "${HARFBUZZ_ICU_LIBRARIES}")
+    if (HARFBUZZ_ICU_LIBRARIES)
+        list(APPEND HARFBUZZ_LIBRARIES "${HARFBUZZ_ICU_LIBRARIES}")
+    endif()
+    set(_HARFBUZZ_EXTRA_REQUIRED_VAR "HARFBUZZ_ICU_LIBRARIES")
+else()
+    set(_HARFBUZZ_EXTRA_REQUIRED_VAR "")
 endif ()
 
 include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(HarfBuzz DEFAULT_MSG HARFBUZZ_INCLUDE_DIRS HARFBUZZ_LIBRARIES)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(HarfBuzz DEFAULT_MSG HARFBUZZ_INCLUDE_DIRS HARFBUZZ_LIBRARIES
+    ${_HARFBUZZ_EXTRA_REQUIRED_VAR})
 
 mark_as_advanced(
     HARFBUZZ_ICU_LIBRARIES
-- 
2.6.2