49 lines
1.5 KiB
Text
49 lines
1.5 KiB
Text
# unlink-busy.m4
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# serial 17
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dnl Copyright (C) 2000-2001, 2004, 2007, 2009-2025 Free Software Foundation,
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dnl 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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dnl From J. David Anglin.
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dnl HPUX and other systems can't unlink shared text that is being executed.
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AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether a running program can be unlinked],
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[gl_cv_func_unlink_busy_text],
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[
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE(
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[AC_INCLUDES_DEFAULT
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GL_MDA_DEFINES[
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int
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main (int argc, char **argv)
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{
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int result = 0;
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if (argc == 0)
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result |= 1;
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else if (unlink (argv[0]) != 0)
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result |= 2;
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return result;
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}]])],
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[gl_cv_func_unlink_busy_text=yes],
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[gl_cv_func_unlink_busy_text=no],
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[case "$host_os" in
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# Guess no on native Windows.
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mingw* | windows*) gl_cv_func_unlink_busy_text="guessing no" ;;
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*) gl_cv_func_unlink_busy_text="guessing no" ;;
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esac
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]
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)
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]
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)
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case "$gl_cv_func_unlink_busy_text" in
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*no) INSTALL=$ac_install_sh ;;
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esac
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])
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