Remove dead or useless header checks from cmake and autoconf

On Windows, this improves clean cmake configuration time on my
workstation from 1m58s to 1m32s, which is pretty significant.  There's
probably more that can be done here, but this is the low hanging fruit.

Eric volunteered to regenerate ./configure for me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187209 91177308-0d34-0410-b5e6-96231b3b80d8

autoconf/configure.ac

@@ -1531,11 +1531,11 @@ AC_HEADER_TIME
 AC_LANG_PUSH([C++])
 AC_CHECK_HEADERS([cxxabi.h])
 AC_LANG_POP([C++])
-AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
+AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h link.h])
 AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h termios.h unistd.h])
-AC_CHECK_HEADERS([utime.h windows.h])
+AC_CHECK_HEADERS([utime.h])
 AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h sys/uio.h])
-AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
+AC_CHECK_HEADERS([sys/ioctl.h malloc/malloc.h mach/mach.h])
 AC_CHECK_HEADERS([valgrind/valgrind.h])
 AC_CHECK_HEADERS([fenv.h])
 AC_CHECK_DECLS([FE_ALL_EXCEPT, FE_INEXACT], [], [], [[#include <fenv.h>]])
@@ -1610,7 +1610,7 @@ AC_CHECK_FUNCS([powf fmodf strtof round ])
 AC_CHECK_FUNCS([log log2 log10 exp exp2])
 AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
 AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
-AC_CHECK_FUNCS([mktemp posix_spawn pread realpath sbrk setrlimit strdup ])
+AC_CHECK_FUNCS([mktemp posix_spawn pread realpath sbrk setrlimit ])
 AC_CHECK_FUNCS([strerror strerror_r setenv arc4random ])
 AC_CHECK_FUNCS([strtoll strtoq sysconf malloc_zone_statistics ])
 AC_CHECK_FUNCS([setjmp longjmp sigsetjmp siglongjmp writev])

autoconf/m4/ltdl.m4

@@ -77,15 +77,9 @@ AC_REQUIRE([AC_LTDL_DLSYM_USCORE])
 AC_REQUIRE([AC_LTDL_SYS_DLOPEN_DEPLIBS])
 AC_REQUIRE([AC_LTDL_FUNC_ARGZ])
 
-AC_CHECK_HEADERS([assert.h ctype.h errno.h malloc.h memory.h stdlib.h \
-		  stdio.h unistd.h])
-AC_CHECK_HEADERS([dl.h sys/dl.h dld.h mach-o/dyld.h])
-AC_CHECK_HEADERS([string.h strings.h], [break])
-
-AC_CHECK_FUNCS([strchr index], [break])
-AC_CHECK_FUNCS([strrchr rindex], [break])
-AC_CHECK_FUNCS([memcpy bcopy], [break])
-AC_CHECK_FUNCS([memmove strcmp])
+AC_CHECK_HEADERS([errno.h malloc.h memory.h unistd.h])
+AC_CHECK_HEADERS([mach-o/dyld.h])
+
 AC_CHECK_FUNCS([closedir opendir readdir])
 ])# AC_LIB_LTDL
 
@@ -385,19 +379,3 @@ if test x"$libltdl_cv_need_uscore" = xyes; then
     [Define if dlsym() requires a leading underscore in symbol names.])
 fi
 ])# AC_LTDL_DLSYM_USCORE
-
-# AC_LTDL_FUNC_ARGZ
-# -----------------
-AC_DEFUN([AC_LTDL_FUNC_ARGZ],
-[AC_CHECK_HEADERS([argz.h])
-
-AC_CHECK_TYPES([error_t],
-  [],
-  [AC_DEFINE([error_t], [int],
-    [Define to a type to use for `error_t' if it is not otherwise available.])],
-  [#if HAVE_ARGZ_H
-#  include <argz.h>
-#endif])
-
-AC_CHECK_FUNCS([argz_append argz_create_sep argz_insert argz_next argz_stringify])
-])# AC_LTDL_FUNC_ARGZ

cmake/config-ix.cmake

@@ -35,52 +35,37 @@ function(check_type_exists type files variable)
 endfunction()
 
 # include checks
-check_include_file(argz.h HAVE_ARGZ_H)
-check_include_file(assert.h HAVE_ASSERT_H)
-check_include_file(ctype.h HAVE_CTYPE_H)
 check_include_file_cxx(cxxabi.h HAVE_CXXABI_H)
 check_include_file(dirent.h HAVE_DIRENT_H)
-check_include_file(dl.h HAVE_DL_H)
-check_include_file(dld.h HAVE_DLD_H)
 check_include_file(dlfcn.h HAVE_DLFCN_H)
 check_include_file(errno.h HAVE_ERRNO_H)
 check_include_file(execinfo.h HAVE_EXECINFO_H)
 check_include_file(fcntl.h HAVE_FCNTL_H)
 check_include_file(inttypes.h HAVE_INTTYPES_H)
 check_include_file(limits.h HAVE_LIMITS_H)
-check_include_file(link.h HAVE_LINK_H)
 check_include_file(malloc.h HAVE_MALLOC_H)
 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
-check_include_file(memory.h HAVE_MEMORY_H)
 check_include_file(ndir.h HAVE_NDIR_H)
 if( NOT PURE_WINDOWS )
   check_include_file(pthread.h HAVE_PTHREAD_H)
 endif()
 check_include_file(sanitizer/msan_interface.h HAVE_SANITIZER_MSAN_INTERFACE_H)
-check_include_file(setjmp.h HAVE_SETJMP_H)
 check_include_file(signal.h HAVE_SIGNAL_H)
 check_include_file(stdint.h HAVE_STDINT_H)
-check_include_file(stdio.h HAVE_STDIO_H)
-check_include_file(stdlib.h HAVE_STDLIB_H)
-check_include_file(string.h HAVE_STRING_H)
-check_include_file(strings.h HAVE_STRINGS_H)
 check_include_file(sys/dir.h HAVE_SYS_DIR_H)
-check_include_file(sys/dl.h HAVE_SYS_DL_H)
 check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
 check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
 check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
 check_include_file(sys/param.h HAVE_SYS_PARAM_H)
 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(sys/wait.h HAVE_SYS_WAIT_H)
 check_include_file(termios.h HAVE_TERMIOS_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(utime.h HAVE_UTIME_H)
 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
-check_include_file(windows.h HAVE_WINDOWS_H)
 check_include_file(zlib.h HAVE_ZLIB_H)
 check_include_file(fenv.h HAVE_FENV_H)
 check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
@@ -121,7 +106,6 @@ check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
-check_symbol_exists(index strings.h HAVE_INDEX)
 check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH)
 check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H)
 check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H)
@@ -162,11 +146,6 @@ check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
 check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
 check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
 check_symbol_exists(pread unistd.h HAVE_PREAD)
-check_symbol_exists(rindex strings.h HAVE_RINDEX)
-check_symbol_exists(strchr string.h HAVE_STRCHR)
-check_symbol_exists(strcmp string.h HAVE_STRCMP)
-check_symbol_exists(strdup string.h HAVE_STRDUP)
-check_symbol_exists(strrchr string.h HAVE_STRRCHR)
 check_symbol_exists(sbrk unistd.h HAVE_SBRK)
 check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48)
 if( HAVE_RAND48_SRAND48 )
@@ -183,8 +162,6 @@ check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ)
 check_symbol_exists(strerror string.h HAVE_STRERROR)
 check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
 check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
-check_symbol_exists(memcpy string.h HAVE_MEMCPY)
-check_symbol_exists(memmove string.h HAVE_MEMMOVE)
 check_symbol_exists(setenv stdlib.h HAVE_SETENV)
 if( PURE_WINDOWS )
   check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
@@ -208,13 +185,6 @@ if( PURE_WINDOWS )
   check_function_exists(__main HAVE___MAIN)
   check_function_exists(__cmpdi2 HAVE___CMPDI2)
 endif()
-if( HAVE_ARGZ_H )
-  check_symbol_exists(argz_append argz.h HAVE_ARGZ_APPEND)
-  check_symbol_exists(argz_create_sep argz.h HAVE_ARGZ_CREATE_SEP)
-  check_symbol_exists(argz_insert argz.h HAVE_ARGZ_INSERT)
-  check_symbol_exists(argz_next argz.h HAVE_ARGZ_NEXT)
-  check_symbol_exists(argz_stringify argz.h HAVE_ARGZ_STRINGIFY)
-endif()
 if( HAVE_DLFCN_H )
   if( HAVE_LIBDL )
     list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
@@ -231,10 +201,7 @@ if( LLVM_USING_GLIBC )
   add_llvm_definitions( -D_GNU_SOURCE )
 endif()
 
-set(headers "")
-if (HAVE_SYS_TYPES_H)
-  set(headers ${headers} "sys/types.h")
-endif()
+set(headers "sys/types.h")
 
 if (HAVE_INTTYPES_H)
   set(headers ${headers} "inttypes.h")

include/llvm/Config/config.h.cmake

@@ -33,27 +33,6 @@
 /* Define to 1 if you have the `arc4random' function. */
 #cmakedefine HAVE_ARC4RANDOM
 
-/* Define to 1 if you have the `argz_append' function. */
-#cmakedefine HAVE_ARGZ_APPEND ${HAVE_ARGZ_APPEND}
-
-/* Define to 1 if you have the `argz_create_sep' function. */
-#cmakedefine HAVE_ARGZ_CREATE_SEP ${HAVE_ARGZ_CREATE_SEP}
-
-/* Define to 1 if you have the <argz.h> header file. */
-#cmakedefine HAVE_ARGZ_H ${HAVE_ARGZ_H}
-
-/* Define to 1 if you have the `argz_insert' function. */
-#cmakedefine HAVE_ARGZ_INSERT ${HAVE_ARGZ_INSERT}
-
-/* Define to 1 if you have the `argz_next' function. */
-#cmakedefine HAVE_ARGZ_NEXT ${HAVE_ARGZ_NEXT}
-
-/* Define to 1 if you have the `argz_stringify' function. */
-#cmakedefine HAVE_ARGZ_STRINGIFY ${HAVE_ARGZ_STRINGIFY}
-
-/* Define to 1 if you have the <assert.h> header file. */
-#cmakedefine HAVE_ASSERT_H ${HAVE_ASSERT_H}
-
 /* Define to 1 if you have the `backtrace' function. */
 #cmakedefine HAVE_BACKTRACE ${HAVE_BACKTRACE}
 
@@ -78,9 +57,6 @@
 /* can use __crashreporter_info__ */
 #undef HAVE_CRASHREPORTER_INFO
 
-/* Define to 1 if you have the <ctype.h> header file. */
-#cmakedefine HAVE_CTYPE_H ${HAVE_CTYPE_H}
-
 /* Define to 1 if you have the declaration of `strerror_s', and to 0 if you
    don't. */
 #cmakedefine01 HAVE_DECL_STRERROR_S
@@ -92,9 +68,6 @@
 /* Define if you have the GNU dld library. */
 #undef HAVE_DLD
 
-/* Define to 1 if you have the <dld.h> header file. */
-#cmakedefine HAVE_DLD_H ${HAVE_DLD_H}
-
 /* Define to 1 if you have the `dlerror' function. */
 #cmakedefine HAVE_DLERROR ${HAVE_DLERROR}
 
@@ -104,9 +77,6 @@
 /* Define if dlopen() is available on this platform. */
 #cmakedefine HAVE_DLOPEN ${HAVE_DLOPEN}
 
-/* Define to 1 if you have the <dl.h> header file. */
-#cmakedefine HAVE_DL_H ${HAVE_DL_H}
-
 /* Define if the dot program is available */
 #cmakedefine HAVE_DOT ${HAVE_DOT}
 
@@ -119,9 +89,6 @@
 /* Define to 1 if you have the <errno.h> header file. */
 #cmakedefine HAVE_ERRNO_H ${HAVE_ERRNO_H}
 
-/* Define to 1 if the system has the type `error_t'. */
-#cmakedefine HAVE_ERROR_T ${HAVE_ERROR_T}
-
 /* Define to 1 if you have the <execinfo.h> header file. */
 #cmakedefine HAVE_EXECINFO_H ${HAVE_EXECINFO_H}
 
@@ -197,9 +164,6 @@
 /* Define if the gv program is available */
 #cmakedefine HAVE_GV ${HAVE_GV}
 
-/* Define to 1 if you have the `index' function. */
-#cmakedefine HAVE_INDEX ${HAVE_INDEX}
-
 /* Define to 1 if the system has the type `int64_t'. */
 #cmakedefine HAVE_INT64_T ${HAVE_INT64_T}
 
@@ -248,9 +212,6 @@
 /* Define if you can use -Wl,-export-dynamic. */
 #define HAVE_LINK_EXPORT_DYNAMIC 1
 
-/* Define to 1 if you have the <link.h> header file. */
-#cmakedefine HAVE_LINK_H ${HAVE_LINK_H}
-
 /* Define if you can use -Wl,-R. to pass -R. to the linker, in order to add
    the current directory to the dynamic linker search path. */
 #undef HAVE_LINK_R
@@ -276,15 +237,6 @@
 /* Define to 1 if you have the `malloc_zone_statistics' function. */
 #cmakedefine HAVE_MALLOC_ZONE_STATISTICS ${HAVE_MALLOC_ZONE_STATISTICS}
 
-/* Define to 1 if you have the `memcpy' function. */
-#cmakedefine HAVE_MEMCPY ${HAVE_MEMCPY}
-
-/* Define to 1 if you have the `memmove' function. */
-#cmakedefine HAVE_MEMMOVE ${HAVE_MEMMOVE}
-
-/* Define to 1 if you have the <memory.h> header file. */
-#cmakedefine HAVE_MEMORY_H ${HAVE_MEMORY_H}
-
 /* Define to 1 if you have the `mkdtemp' function. */
 #cmakedefine HAVE_MKDTEMP ${HAVE_MKDTEMP}
 
@@ -352,9 +304,6 @@
 /* Define to 1 if you have the `realpath' function. */
 #undef HAVE_REALPATH
 
-/* Define to 1 if you have the `rindex' function. */
-#cmakedefine HAVE_RINDEX ${HAVE_RINDEX}
-
 /* Define to 1 if you have the `rintf' function. */
 #undef HAVE_RINTF
 
@@ -373,9 +322,6 @@
 /* Define to 1 if you have the `setjmp' function. */
 #cmakedefine HAVE_SETJMP ${HAVE_SETJMP}
 
-/* Define to 1 if you have the <setjmp.h> header file. */
-#cmakedefine HAVE_SETJMP_H ${HAVE_SETJMP_H}
-
 /* Define to 1 if you have the `setrlimit' function. */
 #cmakedefine HAVE_SETRLIMIT ${HAVE_SETRLIMIT}
 
@@ -394,24 +340,12 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #cmakedefine HAVE_STDINT_H ${HAVE_STDINT_H}
 
-/* Define to 1 if you have the <stdio.h> header file. */
-#cmakedefine HAVE_STDIO_H ${HAVE_STDIO_H}
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#cmakedefine HAVE_STDLIB_H ${HAVE_STDLIB_H}
-
 /* Set to 1 if the std::isinf function is found in <cmath> */
 #undef HAVE_STD_ISINF_IN_CMATH
 
 /* Set to 1 if the std::isnan function is found in <cmath> */
 #undef HAVE_STD_ISNAN_IN_CMATH
 
-/* Define to 1 if you have the `strchr' function. */
-#cmakedefine HAVE_STRCHR ${HAVE_STRCHR}
-
-/* Define to 1 if you have the `strcmp' function. */
-#cmakedefine HAVE_STRCMP ${HAVE_STRCMP}
-
 /* Define to 1 if you have the `strdup' function. */
 #cmakedefine HAVE_STRDUP ${HAVE_STRDUP}
 
@@ -421,15 +355,6 @@
 /* Define to 1 if you have the `strerror_r' function. */
 #cmakedefine HAVE_STRERROR_R ${HAVE_STRERROR_R}
 
-/* Define to 1 if you have the <strings.h> header file. */
-#cmakedefine HAVE_STRINGS_H ${HAVE_STRINGS_H}
-
-/* Define to 1 if you have the <string.h> header file. */
-#cmakedefine HAVE_STRING_H ${HAVE_STRING_H}
-
-/* Define to 1 if you have the `strrchr' function. */
-#cmakedefine HAVE_STRRCHR ${HAVE_STRRCHR}
-
 /* Define to 1 if you have the `strtof' function. */
 #cmakedefine HAVE_STRTOF ${HAVE_STRTOF}
 
@@ -446,9 +371,6 @@
    */
 #cmakedefine HAVE_SYS_DIR_H ${HAVE_SYS_DIR_H}
 
-/* Define to 1 if you have the <sys/dl.h> header file. */
-#cmakedefine HAVE_SYS_DL_H ${HAVE_SYS_DL_H}
-
 /* Define to 1 if you have the <sys/ioctl.h> header file. */
 #cmakedefine HAVE_SYS_IOCTL_H ${HAVE_SYS_IOCTL_H}
 
@@ -501,9 +423,6 @@
 /* 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 <windows.h> header file. */
-#cmakedefine HAVE_WINDOWS_H ${HAVE_WINDOWS_H}
-
 /* Define to 1 if you have the `writev' function. */
 #cmakedefine HAVE_WRITEV ${HAVE_WRITEV}