Clean up more code

- Found some bugs in LLVM compiler-rt library
- The useless LIBC_STUBS package is now deleted
- Improve the overflow checking story even further
- Get chibicc tests working in MODE=dbg mode again
- The libc/isystem/ headers now have correctly named guards

tool/build/lib/buffer.c

@@ -16,16 +16,15 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "tool/build/lib/buffer.h"
 #include "libc/calls/calls.h"
 #include "libc/errno.h"
 #include "libc/fmt/fmt.h"
 #include "libc/intrin/tpenc.h"
 #include "libc/macros.internal.h"
 #include "libc/mem/arraylist2.internal.h"
-#include "libc/mem/fmt.h"
 #include "libc/mem/mem.h"
 #include "libc/str/str.h"
-#include "tool/build/lib/buffer.h"
 
 /* TODO(jart): replace with new append*() library */
 

tool/build/lib/buildlib.mk

@@ -33,7 +33,6 @@ TOOL_BUILD_LIB_A_OBJS =					\
 
 TOOL_BUILD_LIB_A_DIRECTDEPS =				\
 	LIBC_CALLS					\
-	LIBC_ELF					\
 	LIBC_FMT					\
 	LIBC_INTRIN					\
 	LIBC_LOG					\
@@ -43,7 +42,6 @@ TOOL_BUILD_LIB_A_DIRECTDEPS =				\
 	LIBC_SOCK					\
 	LIBC_STDIO					\
 	LIBC_STR					\
-	LIBC_STUBS					\
 	LIBC_SYSV					\
 	LIBC_SYSV_CALLS					\
 	LIBC_TIME					\
@@ -109,6 +107,8 @@ TOOL_BUILD_LIB_CHECKS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_CHECKS))
 TOOL_BUILD_LIB_OBJS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_OBJS))
 TOOL_BUILD_LIB_TESTS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_TESTS))
 
+$(TOOL_BUILD_LIB_OBJS): tool/build/lib/buildlib.mk
+
 .PHONY: o/$(MODE)/tool/build/lib
 o/$(MODE)/tool/build/lib:				\
 		$(TOOL_BUILD_LIB_COMS)			\