libc++: Perform configuration checks with -nodefaultlibs
We're compiling libc++ with -nodefaultlibs, so we should also pass this option
during the configuration checks to ensure those checks are consistent with the
actual build.
The primary motivation here is to ease cross-compilation against a non-standard
set of C++ libraries. Previously, the configuration checks would attempt to link
against the standard C++ libraries, which would cause link failures when
cross-compiling, even though the actual library link would go through correctly
(because of the use of -nodefaultlibs and explicitly specifying any needed
libraries). This is more correct even ignoring the motivation, however.
Patch by Shoaib Meenai!
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@279584 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed