Add new build option KERNEL_USE, which compiles with -mkernel and gets propogated to CFLAGS. Use this to call panic() instead of abort() when enabled.

llvm-svn: 100015

llvm-svn: 93816

Add a VISIBILITY_HIDDEN option, which can be used to make all compiler-rt function definitions hidden/private extern.

llvm-svn: 93790

libraries to generate.
 - Each library may be built with different flags and for different
   architectures, and there is support for building Darwin style fat archives.

 - Uses an ambituous amount of make programming, but should be hidden to
   users and developers.

llvm-svn: 93720

llvm-svn: 93719

llvm-svn: 93718

Add 'SelectFunctionDir' function, to select appropriate function implementation based on a configuration and architecture.

llvm-svn: 93717

 - Rest of makefiles will move to using the information after it has been computed, instead of during subdir traversal.

Also, add 'make info-functions' target, which prints information on all the functions available in compiler-rt.

Also, add 'make help-devel' for listing help on targets intended for compiler-rt developers or direct users.

llvm-svn: 93715

Simplify subdirectory makefiles, and be more robust by checking that they define the appropriate variables.

llvm-svn: 93714

llvm-svn: 93713

to 'make-print-%' to match LLVM.

llvm-svn: 93319

 - Noticed & patched by Nick Kledzik.

 - This may expose portability issues in the .S files, if so we should either
   disable them on non-Darwin, or even better make them portable.

llvm-svn: 81476

llvm-svn: 81474

llvm-svn: 80943

 -

llvm-svn: 74292