Imported Upstream version 1.4.15
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386 changed files with 60019 additions and 38317 deletions
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@ -1,7 +1,7 @@
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# serial 8 -*- Autoconf -*-
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# serial 9 -*- Autoconf -*-
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# Enable extensions on systems that normally disable them.
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# Copyright (C) 2003, 2006-2009 Free Software Foundation, Inc.
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# Copyright (C) 2003, 2006-2010 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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@ -12,6 +12,20 @@
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# enough in this area it's likely we'll need to redefine
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# AC_USE_SYSTEM_EXTENSIONS for quite some time.
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# If autoconf reports a warning
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# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
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# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
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# the fix is
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# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
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# but always AC_REQUIREd,
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# 2) to ensure that for each occurrence of
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# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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# or
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# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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# the corresponding gnulib module description has 'extensions' among
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# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
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# invocation occurs in gl_EARLY, not in gl_INIT.
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# AC_USE_SYSTEM_EXTENSIONS
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# ------------------------
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# Enable extensions on systems that normally disable them,
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@ -74,8 +88,8 @@ AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
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[ac_cv_safe_to_define___extensions__],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[
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# define __EXTENSIONS__ 1
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]AC_INCLUDES_DEFAULT])],
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# define __EXTENSIONS__ 1
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]AC_INCLUDES_DEFAULT])],
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[ac_cv_safe_to_define___extensions__=yes],
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[ac_cv_safe_to_define___extensions__=no])])
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test $ac_cv_safe_to_define___extensions__ = yes &&
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