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b06b1098fc
* configure.in: Invoke the new gnulib macro gl_ASSERT_NO_GNULIB_TESTS. This makes src/config.in a bit smaller, by removing identifiers like GNULIB_TEST_MKTIME that Emacs does not need. * m4/getopt.m4, m4/gnulib-common.m4, m4/include_next.m4: * m4/multiarch.m4, m4/stddef_h.m4, m4/time_h.m4, m4/unistd_h.m4: Sync from gnulib. This removes a few more unnecessary symbols from src/config.in, such as AA_APPLE_UNIVERSAL_BUILD and HAVE_STDDEF_H. * configure, src/config.in: Regenerate.
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
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# stddef_h.m4 serial 3
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dnl Copyright (C) 2009-2011 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_STDDEF_H],
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[
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AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
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AC_REQUIRE([gt_TYPE_WCHAR_T])
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if test $gt_cv_c_wchar_t = no; then
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HAVE_WCHAR_T=0
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STDDEF_H=stddef.h
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fi
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AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
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[gl_cv_decl_null_works],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
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int test[2 * (sizeof NULL == sizeof (void *)) -1];
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]])],
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[gl_cv_decl_null_works=yes],
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[gl_cv_decl_null_works=no])])
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if test $gl_cv_decl_null_works = no; then
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REPLACE_NULL=1
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STDDEF_H=stddef.h
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fi
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if test -n "$STDDEF_H"; then
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gl_NEXT_HEADERS([stddef.h])
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fi
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])
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AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
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[
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dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
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AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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])
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AC_DEFUN([gl_STDDEF_H_DEFAULTS],
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[
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dnl Assume proper GNU behavior unless another module says otherwise.
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REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
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HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
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STDDEF_H=''; AC_SUBST([STDDEF_H])
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])
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