Accommodate empty string for build type. This was previously causing an error

when generating an Xcode project using the CMake files (thanks to Doug Gregor
for identifying the issue).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68618 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index 644ef964e6c5d26ebc43415451752185989688cc..4fb208b50011cf3ee5fe040d6272ea40475f4d15 100644 (file)
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -82,7 +82,7 @@ add_custom_command(OUTPUT ${FINAL_LIBDEPS}
   DEPENDS ${LIBDEPS}
   COMMENT "Checking for cyclic dependencies between LLVM libraries.")
 
-string(TOUPPER ${CMAKE_BUILD_TYPE} uppercase_CMAKE_BUILD_TYPE)
+string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
 set(C_FLGS "${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
 set(CXX_FLGS "${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
 set(CPP_FLGS "${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")