emacs/m4/stdio_h.m4

# stdio_h.m4 serial 41
dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_STDIO_H],
[
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  AC_REQUIRE([AC_C_INLINE])
  gl_NEXT_HEADERS([stdio.h])

  dnl No need to create extra modules for these functions. Everyone who uses
  dnl <stdio.h> likely needs them.
  GNULIB_FSCANF=1
  GNULIB_SCANF=1
  GNULIB_FGETC=1
  GNULIB_GETC=1
  GNULIB_GETCHAR=1
  GNULIB_FGETS=1
  GNULIB_FREAD=1
  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c"
  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  dnl also an optimization, to avoid performing a configure check whose result
  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
  dnl or GNULIB_NONBLOCKING redundant.
  m4_ifdef([gl_NONBLOCKING_IO], [
    gl_NONBLOCKING_IO
    if test $gl_cv_have_nonblocking != yes; then
      REPLACE_STDIO_READ_FUNCS=1
      AC_LIBOBJ([stdio-read])
    fi
  ])

  dnl No need to create extra modules for these functions. Everyone who uses
  dnl <stdio.h> likely needs them.
  GNULIB_FPRINTF=1
  GNULIB_PRINTF=1
  GNULIB_VFPRINTF=1
  GNULIB_VPRINTF=1
  GNULIB_FPUTC=1
  GNULIB_PUTC=1
  GNULIB_PUTCHAR=1
  GNULIB_FPUTS=1
  GNULIB_PUTS=1
  GNULIB_FWRITE=1
  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  dnl also an optimization, to avoid performing a configure check whose result
  dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or
  dnl GNULIB_SIGPIPE redundant.
  m4_ifdef([gl_SIGNAL_SIGPIPE], [
    gl_SIGNAL_SIGPIPE
    if test $gl_cv_header_signal_h_SIGPIPE != yes; then
      REPLACE_STDIO_WRITE_FUNCS=1
      AC_LIBOBJ([stdio-write])
    fi
  ])
  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  dnl also an optimization, to avoid performing a configure check whose result
  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
  dnl or GNULIB_NONBLOCKING redundant.
  m4_ifdef([gl_NONBLOCKING_IO], [
    gl_NONBLOCKING_IO
    if test $gl_cv_have_nonblocking != yes; then
      REPLACE_STDIO_WRITE_FUNCS=1
      AC_LIBOBJ([stdio-write])
    fi
  ])

  dnl Check for declarations of anything we want to poison if the
  dnl corresponding gnulib module is not in use, and which is not
  dnl guaranteed by C89 and C11.
  gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
    ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen
    renameat snprintf tmpfile vdprintf vsnprintf])
])

AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
[
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
  gl_MODULE_INDICATOR_FOR_TESTS([$1])
])

AC_DEFUN([gl_STDIO_H_DEFAULTS],
[
  GNULIB_DPRINTF=0;              AC_SUBST([GNULIB_DPRINTF])
  GNULIB_FCLOSE=0;               AC_SUBST([GNULIB_FCLOSE])
  GNULIB_FDOPEN=0;               AC_SUBST([GNULIB_FDOPEN])
  GNULIB_FFLUSH=0;               AC_SUBST([GNULIB_FFLUSH])
  GNULIB_FGETC=0;                AC_SUBST([GNULIB_FGETC])
  GNULIB_FGETS=0;                AC_SUBST([GNULIB_FGETS])
  GNULIB_FOPEN=0;                AC_SUBST([GNULIB_FOPEN])
  GNULIB_FPRINTF=0;              AC_SUBST([GNULIB_FPRINTF])
  GNULIB_FPRINTF_POSIX=0;        AC_SUBST([GNULIB_FPRINTF_POSIX])
  GNULIB_FPURGE=0;               AC_SUBST([GNULIB_FPURGE])
  GNULIB_FPUTC=0;                AC_SUBST([GNULIB_FPUTC])
  GNULIB_FPUTS=0;                AC_SUBST([GNULIB_FPUTS])
  GNULIB_FREAD=0;                AC_SUBST([GNULIB_FREAD])
  GNULIB_FREOPEN=0;              AC_SUBST([GNULIB_FREOPEN])
  GNULIB_FSCANF=0;               AC_SUBST([GNULIB_FSCANF])
  GNULIB_FSEEK=0;                AC_SUBST([GNULIB_FSEEK])
  GNULIB_FSEEKO=0;               AC_SUBST([GNULIB_FSEEKO])
  GNULIB_FTELL=0;                AC_SUBST([GNULIB_FTELL])
  GNULIB_FTELLO=0;               AC_SUBST([GNULIB_FTELLO])
  GNULIB_FWRITE=0;               AC_SUBST([GNULIB_FWRITE])
  GNULIB_GETC=0;                 AC_SUBST([GNULIB_GETC])
  GNULIB_GETCHAR=0;              AC_SUBST([GNULIB_GETCHAR])
  GNULIB_GETDELIM=0;             AC_SUBST([GNULIB_GETDELIM])
  GNULIB_GETLINE=0;              AC_SUBST([GNULIB_GETLINE])
  GNULIB_OBSTACK_PRINTF=0;       AC_SUBST([GNULIB_OBSTACK_PRINTF])
  GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
  GNULIB_PCLOSE=0;               AC_SUBST([GNULIB_PCLOSE])
  GNULIB_PERROR=0;               AC_SUBST([GNULIB_PERROR])
  GNULIB_POPEN=0;                AC_SUBST([GNULIB_POPEN])
  GNULIB_PRINTF=0;               AC_SUBST([GNULIB_PRINTF])
  GNULIB_PRINTF_POSIX=0;         AC_SUBST([GNULIB_PRINTF_POSIX])
  GNULIB_PUTC=0;                 AC_SUBST([GNULIB_PUTC])
  GNULIB_PUTCHAR=0;              AC_SUBST([GNULIB_PUTCHAR])
  GNULIB_PUTS=0;                 AC_SUBST([GNULIB_PUTS])
  GNULIB_REMOVE=0;               AC_SUBST([GNULIB_REMOVE])
  GNULIB_RENAME=0;               AC_SUBST([GNULIB_RENAME])
  GNULIB_RENAMEAT=0;             AC_SUBST([GNULIB_RENAMEAT])
  GNULIB_SCANF=0;                AC_SUBST([GNULIB_SCANF])
  GNULIB_SNPRINTF=0;             AC_SUBST([GNULIB_SNPRINTF])
  GNULIB_SPRINTF_POSIX=0;        AC_SUBST([GNULIB_SPRINTF_POSIX])
  GNULIB_STDIO_H_NONBLOCKING=0;  AC_SUBST([GNULIB_STDIO_H_NONBLOCKING])
  GNULIB_STDIO_H_SIGPIPE=0;      AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
  GNULIB_TMPFILE=0;              AC_SUBST([GNULIB_TMPFILE])
  GNULIB_VASPRINTF=0;            AC_SUBST([GNULIB_VASPRINTF])
  GNULIB_VFSCANF=0;              AC_SUBST([GNULIB_VFSCANF])
  GNULIB_VSCANF=0;               AC_SUBST([GNULIB_VSCANF])
  GNULIB_VDPRINTF=0;             AC_SUBST([GNULIB_VDPRINTF])
  GNULIB_VFPRINTF=0;             AC_SUBST([GNULIB_VFPRINTF])
  GNULIB_VFPRINTF_POSIX=0;       AC_SUBST([GNULIB_VFPRINTF_POSIX])
  GNULIB_VPRINTF=0;              AC_SUBST([GNULIB_VPRINTF])
  GNULIB_VPRINTF_POSIX=0;        AC_SUBST([GNULIB_VPRINTF_POSIX])
  GNULIB_VSNPRINTF=0;            AC_SUBST([GNULIB_VSNPRINTF])
  GNULIB_VSPRINTF_POSIX=0;       AC_SUBST([GNULIB_VSPRINTF_POSIX])
  dnl Assume proper GNU behavior unless another module says otherwise.
  HAVE_DECL_FPURGE=1;            AC_SUBST([HAVE_DECL_FPURGE])
  HAVE_DECL_FSEEKO=1;            AC_SUBST([HAVE_DECL_FSEEKO])
  HAVE_DECL_FTELLO=1;            AC_SUBST([HAVE_DECL_FTELLO])
  HAVE_DECL_GETDELIM=1;          AC_SUBST([HAVE_DECL_GETDELIM])
  HAVE_DECL_GETLINE=1;           AC_SUBST([HAVE_DECL_GETLINE])
  HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
  HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
  HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
  HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
  HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
  HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
  HAVE_PCLOSE=1;                 AC_SUBST([HAVE_PCLOSE])
  HAVE_POPEN=1;                  AC_SUBST([HAVE_POPEN])
  HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
  HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
  HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
  REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
  REPLACE_FCLOSE=0;              AC_SUBST([REPLACE_FCLOSE])
  REPLACE_FDOPEN=0;              AC_SUBST([REPLACE_FDOPEN])
  REPLACE_FFLUSH=0;              AC_SUBST([REPLACE_FFLUSH])
  REPLACE_FOPEN=0;               AC_SUBST([REPLACE_FOPEN])
  REPLACE_FPRINTF=0;             AC_SUBST([REPLACE_FPRINTF])
  REPLACE_FPURGE=0;              AC_SUBST([REPLACE_FPURGE])
  REPLACE_FREOPEN=0;             AC_SUBST([REPLACE_FREOPEN])
  REPLACE_FSEEK=0;               AC_SUBST([REPLACE_FSEEK])
  REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
  REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
  REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
  REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
  REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
  REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
  REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
  REPLACE_POPEN=0;               AC_SUBST([REPLACE_POPEN])
  REPLACE_PRINTF=0;              AC_SUBST([REPLACE_PRINTF])
  REPLACE_REMOVE=0;              AC_SUBST([REPLACE_REMOVE])
  REPLACE_RENAME=0;              AC_SUBST([REPLACE_RENAME])
  REPLACE_RENAMEAT=0;            AC_SUBST([REPLACE_RENAMEAT])
  REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
  REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
  REPLACE_STDIO_READ_FUNCS=0;    AC_SUBST([REPLACE_STDIO_READ_FUNCS])
  REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
  REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
  REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
  REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
  REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
  REPLACE_VPRINTF=0;             AC_SUBST([REPLACE_VPRINTF])
  REPLACE_VSNPRINTF=0;           AC_SUBST([REPLACE_VSNPRINTF])
  REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
])