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/x/utf16to8.c

@@ -16,7 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/intrin/bits.h"
+#include "libc/serialize.h"
 #include "libc/intrin/bsr.h"
 #include "libc/intrin/packsswb.h"
 #include "libc/intrin/pandn.h"

libc/x/x.h

@@ -34,7 +34,6 @@
 #define xbarf         __xbarf
 #endif /* _COSMO_SOURCE */
 
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 #ifdef _COSMO_SOURCE
 COSMOPOLITAN_C_START_
 
@@ -97,5 +96,4 @@ int xbarf(const char *, const void *, size_t);
 
 COSMOPOLITAN_C_END_
 #endif /* _COSMO_SOURCE */
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_H_ */

libc/x/xasprintf.h

@@ -1,6 +1,5 @@
 #ifndef COSMOPOLITAN_LIBC_X_XASPRINTF_H_
 #define COSMOPOLITAN_LIBC_X_XASPRINTF_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 char *xasprintf(const char *, ...) paramsnonnull((1))
@@ -9,5 +8,4 @@ char *xvasprintf(const char *, va_list) paramsnonnull()
     returnspointerwithnoaliases dontthrow nocallback __wur returnsnonnull;
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_XASPRINTF_H_ */

libc/x/xgetline.h

@@ -1,11 +1,9 @@
 #ifndef COSMOPOLITAN_LIBC_X_XGETLINE_H_
 #define COSMOPOLITAN_LIBC_X_XGETLINE_H_
 #include "libc/stdio/stdio.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 char *xgetline(struct FILE *) paramsnonnull() mallocesque;
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_XGETLINE_H_ */

libc/x/xiso8601.h

@@ -2,7 +2,6 @@
 #define COSMOPOLITAN_LIBC_X_XISO8601_H_
 #include "libc/calls/struct/timespec.h"
 #include "libc/calls/struct/timeval.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 char *xiso8601i(int) mallocesque;
@@ -15,5 +14,4 @@ char *xiso8601ts(struct timespec *) mallocesque;
 #endif /* C11 */
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_XISO8601_H_ */

libc/x/xsigaction.h

@@ -1,11 +1,9 @@
 #ifndef COSMOPOLITAN_LIBC_X_XSIGACTION_H_
 #define COSMOPOLITAN_LIBC_X_XSIGACTION_H_
 #include "libc/calls/struct/sigaction.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 int xsigaction(int, void *, uint64_t, uint64_t, struct sigaction *);
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_XSIGACTION_H_ */

libc/x/xspawn.h

@@ -1,12 +1,10 @@
 #ifndef COSMOPOLITAN_LIBC_X_XSPAWN_H_
 #define COSMOPOLITAN_LIBC_X_XSPAWN_H_
 #include "libc/calls/struct/rusage.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
 int xspawn(struct rusage *);
 int xvspawn(void (*)(void *), void *, struct rusage *) returnstwice;
 
 COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_X_XSPAWN_H_ */