If building with LLVM_ENABLE_DOXYGEN and using CMake then

abort while configuring if doxygen could not be found. This
is desirable because if the build is going to fail then it should
fail as early as possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207404 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index d1e4b2a64ea093a750009f020e8bd9801c85d775..ca4af73d92c8e0c8a69ccb9d70f0f87bb02621db 100755 (executable)
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -486,7 +486,7 @@ set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX})
 
 if (LLVM_ENABLE_DOXYGEN)
   message(STATUS "Doxygen enabled.")
-  find_package(Doxygen)
+  find_package(Doxygen REQUIRED)
 
   if (DOXYGEN_FOUND)
     # If we find doxygen and we want to enable doxygen by default create a