Remove HAVE_WRITEV that's unused after r255837.

llvm-svn: 328977

llvm/cmake/config-ix.cmake

@@ -47,7 +47,6 @@ check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
-check_include_file(sys/uio.h HAVE_SYS_UIO_H)
 check_include_file(termios.h HAVE_TERMIOS_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
@@ -198,9 +197,6 @@ check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
 endif()
-if( HAVE_SYS_UIO_H )
-  check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
-endif()
 set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
 check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
 set(CMAKE_REQUIRED_DEFINITIONS "")

llvm/include/llvm/Config/config.h.cmake

@@ -226,9 +226,6 @@
 /* Define to 1 if you have the <sys/types.h> header file. */
 #cmakedefine HAVE_SYS_TYPES_H ${HAVE_SYS_TYPES_H}
 
-/* Define to 1 if you have the <sys/uio.h> header file. */
-#cmakedefine HAVE_SYS_UIO_H ${HAVE_SYS_UIO_H}
-
 /* Define if the setupterm() function is supported this platform. */
 #cmakedefine HAVE_TERMINFO ${HAVE_TERMINFO}
 
@@ -244,9 +241,6 @@
 /* Define to 1 if you have the <valgrind/valgrind.h> header file. */
 #cmakedefine HAVE_VALGRIND_VALGRIND_H ${HAVE_VALGRIND_VALGRIND_H}
 
-/* Define to 1 if you have the `writev' function. */
-#cmakedefine HAVE_WRITEV ${HAVE_WRITEV}
-
 /* Define to 1 if you have the <zlib.h> header file. */
 #cmakedefine HAVE_ZLIB_H ${HAVE_ZLIB_H}
 

llvm/lib/Support/raw_ostream.cpp

@@ -41,9 +41,6 @@
 #if defined(HAVE_UNISTD_H)
 # include <unistd.h>
 #endif
-#if defined(HAVE_SYS_UIO_H) && defined(HAVE_WRITEV)
-#  include <sys/uio.h>
-#endif
 
 #if defined(__CYGWIN__)
 #include <io.h>