Reduce header complexity

- Remove most __ASSEMBLER__ __LINKER__ ifdefs
- Rename libc/intrin/bits.h to libc/serialize.h
- Block pthread cancelation in fchmodat() polyfill
- Remove `clang-format off` statements in third_party

libc/proc/cocmd.c

@@ -25,7 +25,7 @@
 #include "libc/fmt/conv.h"
 #include "libc/fmt/itoa.h"
 #include "libc/fmt/magnumstrs.internal.h"
-#include "libc/intrin/bits.h"
+#include "libc/serialize.h"
 #include "libc/intrin/getenv.internal.h"
 #include "libc/intrin/weaken.h"
 #include "libc/limits.h"

libc/proc/describefds.internal.h

@@ -2,7 +2,6 @@
 #define COSMOPOLITAN_LIBC_PROC_DESCRIBEFDS_INTERNAL_H_
 #include "libc/calls/struct/fd.internal.h"
 #include "libc/nt/struct/startupinfo.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 bool __is_cloexec(const struct Fd *);
@@ -11,5 +10,4 @@ char *__describe_fds(const struct Fd *, size_t, struct NtStartupInfo *, int64_t,
                      int64_t **, uint32_t *);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_PROC_DESCRIBEFDS_INTERNAL_H_ */

libc/proc/execve-sysv.c

@@ -27,7 +27,6 @@
 #include "libc/dce.h"
 #include "libc/errno.h"
 #include "libc/fmt/magnumstrs.internal.h"
-#include "libc/intrin/bits.h"
 #include "libc/intrin/describeflags.internal.h"
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/intrin/strace.internal.h"

libc/proc/execve.internal.h

@@ -1,10 +1,8 @@
 #ifndef COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_
 #define COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 bool IsApeLoadable(char[8]);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_ */

libc/proc/ntspawn.h

@@ -2,7 +2,6 @@
 #define COSMOPOLITAN_NTSPAWN_H_
 #include "libc/nt/struct/processinformation.h"
 #include "libc/nt/struct/startupinfo.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 void mungentpath(char *);
@@ -13,5 +12,4 @@ int ntspawn(int64_t, const char *, char *const[], char *const[], char *const[],
             const struct NtStartupInfo *, struct NtProcessInformation *);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_NTSPAWN_H_ */

libc/proc/posix_spawn.h

@@ -14,7 +14,6 @@
 #define POSIX_SPAWN_SETSID        128
 #define POSIX_SPAWN_SETRLIMIT     256
 
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 typedef struct _posix_spawna *posix_spawnattr_t;
@@ -55,5 +54,4 @@ int posix_spawnattr_getrlimit(const posix_spawnattr_t *, int, struct rlimit *);
 int posix_spawnattr_setrlimit(posix_spawnattr_t *, int, const struct rlimit *);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_STDIO_SPAWN_H_ */

libc/proc/posix_spawn.internal.h

@@ -11,7 +11,6 @@
 #define _POSIX_SPAWN_CHDIR  4
 #define _POSIX_SPAWN_FCHDIR 5
 
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 struct _posix_spawna {
@@ -43,5 +42,4 @@ int __posix_spawn_add_file_action(posix_spawn_file_actions_t *,
                                   struct _posix_faction);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_STDIO_SPAWNA_INTERNAL_H_ */

libc/proc/proc.internal.h

@@ -6,7 +6,6 @@
 #include "libc/intrin/dll.h"
 #include "libc/thread/thread.h"
 #include "third_party/nsync/mu.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 #define PROC_ALIVE  0
@@ -56,5 +55,4 @@ int __proc_harvest(struct Proc *, bool);
 int sys_wait4_nt(int, int *, int, struct rusage *);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_PROC_H_ */