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Annotation of embedaddon/libiconv/srcm4/unlocked-io.m4, revision 1.1

1.1     ! misho       1: # unlocked-io.m4 serial 15
        !             2: 
        !             3: # Copyright (C) 1998-2006, 2009 Free Software Foundation, Inc.
        !             4: #
        !             5: # This file is free software; the Free Software Foundation
        !             6: # gives unlimited permission to copy and/or distribute it,
        !             7: # with or without modifications, as long as this notice is preserved.
        !             8: 
        !             9: dnl From Jim Meyering.
        !            10: dnl
        !            11: dnl See if the glibc *_unlocked I/O macros or functions are available.
        !            12: dnl Use only those *_unlocked macros or functions that are declared
        !            13: dnl (because some of them were declared in Solaris 2.5.1 but were removed
        !            14: dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
        !            15: dnl on Solaris 2.6).
        !            16: 
        !            17: AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
        !            18: [
        !            19:   AC_DEFINE([USE_UNLOCKED_IO], [1],
        !            20:     [Define to 1 if you want getc etc. to use unlocked I/O if available.
        !            21:      Unlocked I/O can improve performance in unithreaded apps,
        !            22:      but it is not safe for multithreaded apps.])
        !            23: 
        !            24:   dnl Persuade glibc and Solaris <stdio.h> to declare
        !            25:   dnl fgets_unlocked(), fputs_unlocked() etc.
        !            26:   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
        !            27: 
        !            28:   AC_CHECK_DECLS_ONCE([clearerr_unlocked])
        !            29:   AC_CHECK_DECLS_ONCE([feof_unlocked])
        !            30:   AC_CHECK_DECLS_ONCE([ferror_unlocked])
        !            31:   AC_CHECK_DECLS_ONCE([fflush_unlocked])
        !            32:   AC_CHECK_DECLS_ONCE([fgets_unlocked])
        !            33:   AC_CHECK_DECLS_ONCE([fputc_unlocked])
        !            34:   AC_CHECK_DECLS_ONCE([fputs_unlocked])
        !            35:   AC_CHECK_DECLS_ONCE([fread_unlocked])
        !            36:   AC_CHECK_DECLS_ONCE([fwrite_unlocked])
        !            37:   AC_CHECK_DECLS_ONCE([getc_unlocked])
        !            38:   AC_CHECK_DECLS_ONCE([getchar_unlocked])
        !            39:   AC_CHECK_DECLS_ONCE([putc_unlocked])
        !            40:   AC_CHECK_DECLS_ONCE([putchar_unlocked])
        !            41: ])