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3d458a81c6
Added pipe2 and open modules, to get O_CLOEXEC. * libguile/Makefile.am (guile_filter_doc_snarfage$(EXEEXT)): Add gnulib here, in the native build case, for rpl_fflush if needed. foo
40 lines
1.2 KiB
Text
40 lines
1.2 KiB
Text
# putenv.m4 serial 18
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dnl Copyright (C) 2002-2011 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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dnl From Jim Meyering.
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dnl
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dnl Check whether putenv ("FOO") removes FOO from the environment.
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dnl The putenv in libc on at least SunOS 4.1.4 does *not* do that.
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AC_DEFUN([gl_FUNC_PUTENV],
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[
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AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
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AC_CACHE_CHECK([for putenv compatible with GNU and SVID],
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[gl_cv_func_svid_putenv],
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[AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[[
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/* Put it in env. */
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if (putenv ("CONFTEST_putenv=val"))
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return 1;
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/* Try to remove it. */
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if (putenv ("CONFTEST_putenv"))
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return 2;
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/* Make sure it was deleted. */
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if (getenv ("CONFTEST_putenv") != 0)
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return 3;
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return 0;
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]])],
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gl_cv_func_svid_putenv=yes,
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gl_cv_func_svid_putenv=no,
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dnl When crosscompiling, assume putenv is broken.
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gl_cv_func_svid_putenv=no)
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])
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if test $gl_cv_func_svid_putenv = no; then
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REPLACE_PUTENV=1
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fi
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])
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