[PATCH] D51899: Remove extraneous ".a" suffix from baremetal clang_rt.builtins when compiling for baremetal.

[Robert Widmann via Phabricator via cfe-commits]

CodaFi added a comment.

@kristina They're having linker troubles because this driver is hardcoding an incorrect linker flag for libbuiltin on the arm-baremetal triple.  https://reviews.llvm.org/D33259 introduced this incorrect behavior by smashing together the incorrect `-lclang_rt.builtins-armv6m` flag with the proper resource-directory-relative absolute path `<RESOURCE_DIR>/lib/libclang_rt.builtins-armv6m.a`.  The driver should be forming an exact path to this library relative to the resource directory.  If users wish to override this behavior, they need to pass `-nostdlib` or ` -nodefaultlibs`


https://reviews.llvm.org/D51899