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9 ISO C and POSIX Header File Substitutes

This chapter describes which header files specified by ISO C or POSIX are substituted by Gnulib, which portability pitfalls are fixed by Gnulib, and which (known) portability problems are not worked around by Gnulib.

The notation “Gnulib module: —” means that Gnulib does not provide a module providing a substitute for the header file. When the list “Portability problems not fixed by Gnulib” is empty, such a module is not needed: No portability problems are known. Otherwise, it indicates that such a module would be useful but is not available: No one so far found this header file important enough to contribute a substitute for it. If you need this particular header file, you may write to <bug-gnulib at gnu dot org>.

• aio.h
• arpa/inet.h
• assert.h
• complex.h
• cpio.h
• ctype.h
• dirent.h
• dlfcn.h
• errno.h
• fcntl.h
• fenv.h
• float.h
• fmtmsg.h
• fnmatch.h
• ftw.h
• glob.h
• grp.h
• iconv.h
• inttypes.h
• iso646.h
• langinfo.h
• libgen.h
• limits.h
• locale.h
• math.h
• monetary.h
• mqueue.h
• ndbm.h
• net/if.h
• netdb.h
• netinet/in.h
• netinet/tcp.h
• nl_types.h
• poll.h
• pthread.h
• pwd.h
• regex.h
• sched.h
• search.h
• semaphore.h
• setjmp.h
• signal.h
• spawn.h
• stdalign.h
• stdarg.h
• stdatomic.h
• stdbit.h
• stdbool.h
• stdckdint.h
• stddef.h
• stdint.h
• stdio.h
• stdlib.h
• stdnoreturn.h
• string.h
• strings.h
• stropts.h
• sys/ipc.h
• sys/mman.h
• sys/msg.h
• sys/resource.h
• sys/select.h
• sys/sem.h
• sys/shm.h
• sys/socket.h
• sys/stat.h
• sys/statvfs.h
• sys/time.h
• sys/timeb.h
• sys/times.h
• sys/types.h
• sys/uio.h
• sys/un.h
• sys/utsname.h
• sys/wait.h
• syslog.h
• tar.h
• termios.h
• tgmath.h
• threads.h
• time.h
• trace.h
• uchar.h
• ucontext.h
• ulimit.h
• unistd.h
• utime.h
• utmpx.h
• wchar.h
• wctype.h
• wordexp.h