Improve cosmocc / cosmoc++ toolchains

They'll now automatically create empty static archives for system
libraries that are provided by Cosmopolitan Libc. This helps make
configure scripts less confused. Musl does the same thing.

tool/emacs/cosmo-c-types.el

@@ -172,6 +172,16 @@
            "uint128_t"
            "axdx_t"))
 
+        (linux
+         '("i8"
+           "u8"
+           "i16"
+           "u16"
+           "i32"
+           "u32"
+           "i64"
+           "u64"))
+
         (x86intrin
          '("__v8hu"
            "__v16qi"
@@ -218,6 +228,7 @@
                                 gnu
                                 cxx17
                                 cosmo
+                                linux
                                 x86intrin))
             "\\_>")))
 

tool/emacs/cosmo-stuff.el

@@ -148,7 +148,7 @@
 ;;   M-4 C-c C-c   Compile w/ MODE=dbg
 ;;   M-5 C-c C-c   Compile w/ MODE=""
 ;;   M-7 C-c C-c   Compile w/ MODE=tinylinux
-;;   M-8 C-c C-c   Compile w/ llvm
+;;   M-8 C-c C-c   Compile w/ clang tsan
 ;;   M-9 C-c C-c   Compile w/ chibicc
 
 (defun cosmo-intest (&optional file-name)
@@ -166,7 +166,7 @@
         ((eq arg 5) "")
         ((eq arg 6) "optlinux")
         ((eq arg 7) "tinylinux")
-        ((eq arg 8) "llvm")
+        ((eq arg 8) "tsan")
         (default default)
         ((cosmo-intest) "dbg")
         (t "fastbuild")))