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Preprocessor Symbol Index

This is an alphabetical list of the C preprocessor symbols that the Autoconf macros define. To work with Autoconf, C source code needs to use these names in #if directives.

Jump to: _ - c - d - f - g - h - i - l - m - n - o - p - r - s - t - u - v - w - y

_

  • __CHAR_UNSIGNED__
  • _ALL_SOURCE
  • _MINIX
  • _POSIX_1_SOURCE
  • _POSIX_SOURCE, _POSIX_SOURCE
  • _POSIX_VERSION
  • c

  • C_ALLOCA
  • CLOSEDIR_VOID
  • const
  • d

  • DGUX
  • DIRENT
  • f

  • F77_NO_MINUS_C_MINUS_O
  • g

  • GETGROUPS_T
  • GETLODAVG_PRIVILEGED
  • GETPGRP_VOID
  • gid_t
  • h

  • HAVE_ALLOCA_H
  • HAVE_CONFIG_H
  • HAVE_DIRENT_H
  • HAVE_DOPRNT
  • HAVE_function
  • HAVE_GETMNTENT
  • HAVE_header
  • HAVE_LONG_DOUBLE
  • HAVE_LONG_FILE_NAMES
  • HAVE_MMAP
  • HAVE_NDIR_H
  • HAVE_RESTARTABLE_SYSCALLS
  • HAVE_ST_BLKSIZE
  • HAVE_ST_BLOCKS
  • HAVE_ST_RDEV
  • HAVE_STRCOLL
  • HAVE_STRFTIME
  • HAVE_STRINGIZE
  • HAVE_SYS_DIR_H
  • HAVE_SYS_NDIR_H
  • HAVE_SYS_WAIT_H
  • HAVE_TM_ZONE
  • HAVE_TZNAME
  • HAVE_UNISTD_H
  • HAVE_UTIME_NULL
  • HAVE_VFORK_H
  • HAVE_VPRINTF
  • HAVE_WAIT3
  • i

  • inline
  • INT_16_BITS
  • l

  • LONG_64_BITS
  • m

  • MAJOR_IN_MKDEV
  • MAJOR_IN_SYSMACROS
  • mode_t
  • n

  • NDIR
  • NEED_MEMORY_H
  • NEED_SETGID
  • NLIST_NAME_UNION
  • NLIST_STRUCT
  • NO_MINUS_C_MINUS_O
  • o

  • off_t
  • p

  • pid_t
  • r

  • RETSIGTYPE
  • s

  • SELECT_TYPE_ARG1
  • SELECT_TYPE_ARG234
  • SELECT_TYPE_ARG5
  • SETPGRP_VOID
  • SETVBUF_REVERSED
  • size_t
  • STDC_HEADERS
  • SVR4
  • SYS_SIGLIST_DECLARED
  • SYSDIR
  • SYSNDIR
  • t

  • TIME_WITH_SYS_TIME
  • TM_IN_SYS_TIME
  • u

  • uid_t
  • UMAX
  • UMAX4_3
  • USG
  • v

  • vfork
  • VOID_CLOSEDIR
  • w

  • WORDS_BIGENDIAN
  • y

  • YYTEXT_POINTER

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