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dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_WRITE],
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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dnl This ifdef is just an optimization, to avoid performing a configure
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dnl check whose result is not used. It does not make the test of
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dnl GNULIB_UNISTD_H_SIGPIPE or GNULIB_SIGPIPE redundant.
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m4_ifdef([gl_SIGNAL_SIGPIPE], [
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if test $gl_cv_header_signal_h_SIGPIPE != yes; then
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m4_ifdef([gl_NONBLOCKING_IO], [
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if test $gl_cv_have_nonblocking != yes; then