[libc++][NFC] Promote CMake comment to an actual option description
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@356386 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5920cfd..0c20cc3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -172,9 +172,9 @@
set(LIBCXX_CXX_ABI_LIBNAME "${LIBCXX_CXX_ABI}")
endif()
-# Use a static copy of the ABI library when linking libc++. This option
-# cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT.
-option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY "Statically link the ABI library" OFF)
+option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY
+ "Use a static copy of the ABI library when linking libc++.
+ This option cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT." OFF)
cmake_dependent_option(LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY
"Statically link the ABI library to static library" ON
