[libc] Re-enable wctob with fixes

[michaelrj]

Summary

The stdio test failures were due to headers potentially not being built
in the correct order. This should set up the dependencies correctly.

[sivachandra]

libc/include/CMakeLists.txt

187

This dep should be added to llvm-libc-types.cookie_io_functions_t also.

[michaelrj]

add ssize_t dependency to cookie_io_functions_t

[michaelrj]

reorder type headers in cmake to fix "missing type ssize_t" error

libc/config/linux/x86_64/entrypoints.txt

set(TARGET_LIBC_ENTRYPOINTS
     libc.src.unistd.symlinkat
     libc.src.unistd.sysconf
     libc.src.unistd.truncate
     libc.src.unistd.unlink
     libc.src.unistd.unlinkat
     libc.src.unistd.write
 
     # wchar.h entrypoints
-    # libc.src.wchar.wctob
+    libc.src.wchar.wctob
 )
 
 set(TARGET_LIBM_ENTRYPOINTS
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
     libc.src.fenv.fedisableexcept
     libc.src.fenv.feenableexcept
     libc.src.fenv.fegetenv

libc/include/CMakeLists.txt

add_gen_header(
   stdio
   DEF_FILE stdio.h.def
   GEN_HDR stdio.h
   DEPENDS
     .llvm_libc_common_h
     .llvm-libc-macros.file_seek_macros
     .llvm-libc-macros.stdio_macros
     .llvm-libc-types.size_t
+    .llvm-libc-types.ssize_t
     .llvm-libc-types.FILE
     .llvm-libc-types.cookie_io_functions_t
 )
 
 add_gen_header(
   stdlib
   DEF_FILE stdlib.h.def
   GEN_HDR stdlib.h

libc/include/llvm-libc-types/CMakeLists.txt

 add_header(off64_t HDR off64_t.h)
 add_header(size_t HDR size_t.h)
+add_header(ssize_t HDR ssize_t.h)
 add_header(__atfork_callback_t HDR __atfork_callback_t.h)
 add_header(__bsearchcompare_t HDR __bsearchcompare_t.h)
 add_header(__call_once_func_t HDR __call_once_func_t.h)
 add_header(__exec_argv_t HDR __exec_argv_t.h)
 add_header(__exec_envp_t HDR __exec_envp_t.h)
 add_header(__futex_word HDR __futex_word.h)
 add_header(__mutex_type HDR __mutex_type.h DEPENDS .__futex_word)
 add_header(__pthread_once_func_t HDR __pthread_once_func_t.h)
 add_header(__pthread_start_t HDR __pthread_start_t.h)
 add_header(__pthread_tss_dtor_t HDR __pthread_tss_dtor_t.h)
 add_header(__qsortcompare_t HDR __qsortcompare_t.h)
 add_header(__sighandler_t HDR __sighandler_t.h)
 add_header(__thread_type HDR __thread_type.h)
 add_header(blkcnt_t HDR blkcnt_t.h)
 add_header(blksize_t HDR blksize_t.h)
 add_header(cc_t HDR cc_t.h)
 add_header(clock_t HDR clock_t.h)
 add_header(clockid_t HDR clockid_t.h)
 add_header(cnd_t HDR cnd_t.h)
-add_header(cookie_io_functions_t HDR cookie_io_functions_t.h DEPENDS .off64_t)
+add_header(cookie_io_functions_t HDR cookie_io_functions_t.h DEPENDS .off64_t .ssize_t)
 add_header(cpu_set_t HDR cpu_set_t.h)
 add_header(double_t HDR double_t.h)
 add_header(DIR HDR DIR.h)
 add_header(dev_t HDR dev_t.h)
 add_header(div_t HDR div_t.h)
 add_header(ldiv_t HDR ldiv_t.h)
 add_header(lldiv_t HDR lldiv_t.h)
 add_header(FILE HDR FILE.h)

 add_header(pthread_once_t HDR pthread_once_t.h DEPENDS .__futex_word)
 add_header(rlim_t HDR rlim_t.h)
 add_header(time_t HDR time_t.h)
 add_header(stack_t HDR stack_t.h)
 add_header(suseconds_t HDR suseconds_t.h)
 add_header(struct_timeval HDR struct_timeval.h DEPENDS .suseconds_t .time_t)
 add_header(struct_rlimit HDR struct_rlimit.h DEPENDS .rlim_t)
 add_header(struct_rusage HDR struct_rusage.h DEPENDS .struct_timeval)
-add_header(ssize_t HDR ssize_t.h)
 add_header(struct_dirent HDR struct_dirent.h DEPENDS .ino_t .off_t)
 add_header(union_sigval HDR union_sigval.h)
 add_header(siginfo_t HDR siginfo_t.h DEPENDS .union_sigval .pid_t .uid_t)
 add_header(sig_atomic_t HDR sig_atomic_t.h)
 add_header(sigset_t HDR sigset_t.h DEPENDS libc.include.llvm-libc-macros.signal_macros)
 add_header(struct_sigaction HDR struct_sigaction.h DEPENDS .sigset_t .siginfo_t)
 add_header(struct_timespec HDR struct_timespec.h DEPENDS .time_t)
 add_header(

libc/src/wchar/CMakeLists.txt

 
 add_entrypoint_object(
   wctob
   SRCS
     wctob.cpp
   HDRS
     wctob.h
   DEPENDS 
     libc.include.stdio
+    libc.include.wchar
     libc.src.__support.wctype_utils
 )