build: don't add -fPIC on Windows
`-fPIC` doesn't make much sense for Windows, since Windows DLLs aren't compiled
position independent and are instead relocated at runtime.
Patch by Shoaib Meenai!
llvm-svn: 280413
diff --git a/libcxx/lib/CMakeLists.txt b/libcxx/lib/CMakeLists.txt
index e6f9ff6..dd0f663 100644
--- a/libcxx/lib/CMakeLists.txt
+++ b/libcxx/lib/CMakeLists.txt
@@ -72,7 +72,9 @@
add_library_flags_if(LIBCXX_HAVE_CXX_ATOMICS_WITH_LIB atomic)
# Setup flags.
-add_flags_if_supported(-fPIC)
+if (NOT WIN32)
+ add_flags_if_supported(-fPIC)
+endif()
add_link_flags_if_supported(-nodefaultlibs)
if ( APPLE AND (LIBCXX_CXX_ABI_LIBNAME STREQUAL "libcxxabi" OR
