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25 lines
725 B
Text
25 lines
725 B
Text
# pipe2.m4
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# serial 4
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dnl Copyright (C) 2009-2025 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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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_FUNC_PIPE2],
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[
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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dnl Persuade glibc <unistd.h> to declare pipe2().
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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gl_CHECK_FUNCS_ANDROID([pipe2], [[#include <unistd.h>]])
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if test $ac_cv_func_pipe2 != yes; then
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HAVE_PIPE2=0
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case "$gl_cv_onwards_func_pipe2" in
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future*) REPLACE_PIPE2=1 ;;
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esac
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else
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REPLACE_PIPE2=1
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fi
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])
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