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* .bzrignore: Add lib/stdalign.h. * config.bat: Do not set NO_DECL_ALIGN; no longer needed. Copy lib/stdalign.in.h to lib/stdalign.in-h as needed. * configure.ac (HAVE_ATTRIBUTE_ALIGNED): Remove the code that fiddles with this, as gnulib now does this for us. * admin/merge-gnulib: Add environ, stdalign. * m4/environ.m4: New file, from gnulib. * lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate. * lib/stdalign.in.h, m4/stdalign.m4: New files, from gnulib. * sed2v2.inp (HAVE_ATTRIBUTE_ALIGNED): Remove edit. * sedlibmk.inp (STDALIGN_H, @GL_GENERATE_STDALIGN_H_TRUE@) (GL_GENERATE_STDALIGN_H_FALSE): New edits. * nt/config.nt (HAVE_ATTRIBUTE_ALIGNED): Remove. * src/alloc.c (XMALLOC_BASE_ALIGNMENT, GC_POINTER_ALIGNMENT, pure_alloc): Simplify by using alignof. (pure_alloc) [! USE_LSB_TAG]: Don't over-align EMACS_INT values. * src/lisp.h: Include <stdalign.h>. (GCALIGNMENT): New macro and constant. (DECL_ALIGN): Remove. All uses replaced by alignas (GCALIGNMENT). (USE_LSB_TAG): ifdef on alignas, not on DECL_ALIGN. (stdalign): New macro, if not already defined.
48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
# environ.m4 serial 6
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dnl Copyright (C) 2001-2004, 2006-2012 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_ONCE([gl_ENVIRON],
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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 environ.
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_HEADERS_ONCE([unistd.h])
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gt_CHECK_VAR_DECL(
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[#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
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#include <stdlib.h>
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],
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[environ])
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if test $gt_cv_var_environ_declaration != yes; then
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HAVE_DECL_ENVIRON=0
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fi
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])
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# Check if a variable is properly declared.
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# gt_CHECK_VAR_DECL(includes,variable)
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AC_DEFUN([gt_CHECK_VAR_DECL],
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[
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define([gt_cv_var], [gt_cv_var_]$2[_declaration])
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AC_MSG_CHECKING([if $2 is properly declared])
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AC_CACHE_VAL([gt_cv_var], [
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[$1
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extern struct { int foo; } $2;]],
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[[$2.foo = 1;]])],
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[gt_cv_var=no],
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[gt_cv_var=yes])])
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AC_MSG_RESULT([$gt_cv_var])
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if test $gt_cv_var = yes; then
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AC_DEFINE([HAVE_]m4_translit($2, [a-z], [A-Z])[_DECL], 1,
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[Define if you have the declaration of $2.])
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fi
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undefine([gt_cv_var])
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])
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