93f6e21759
* lib/Makefile.am, lib/alloca.c, lib/alloca.in.h, lib/argp-ba.c, lib/argp-eexst.c, lib/argp-fmtstream.c, lib/argp-fmtstream.h, lib/argp-fs-xinl.c, lib/argp-help.c, lib/argp-namefrob.h, lib/argp-parse.c, lib/argp-pin.c, lib/argp-pv.c, lib/argp-pvh.c, lib/argp-xinl.c, lib/argp.h, lib/asnprintf.c, lib/basename-lgpl.c, lib/dirname-lgpl.c, lib/dirname.h, lib/dosname.h, lib/errno.in.h, lib/float+.h, lib/float.c, lib/float.in.h, lib/getopt.c, lib/getopt.in.h, lib/getopt1.c, lib/getopt_int.h, lib/gettext.h, lib/intprops.h, lib/itold.c, lib/malloc.c, lib/memchr.c, lib/memchr.valgrind, lib/mempcpy.c, lib/printf-args.c, lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h, lib/rawmemchr.c, lib/rawmemchr.valgrind, lib/size_max.h, lib/sleep.c, lib/stdalign.in.h, lib/stdbool.in.h, lib/stddef.in.h, lib/stdint.in.h, lib/stdio.in.h, lib/stdlib.in.h, lib/strcasecmp.c, lib/strchrnul.c, lib/strchrnul.valgrind, lib/strerror-override.c, lib/strerror-override.h, lib/strerror.c, lib/string.in.h, lib/strings.in.h, lib/stripslash.c, lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/sys_types.in.h, lib/sysexits.in.h, lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/verify.h, lib/vsnprintf.c, lib/wchar.in.h, lib/xsize.h, m4/00gnulib.m4, m4/alloca.m4, m4/argp.m4, m4/dirname.m4, m4/double-slash-root.m4, m4/errno_h.m4, m4/exponentd.m4, m4/extensions.m4, m4/float_h.m4, m4/getopt.m4, m4/gnulib-cache.m4, m4/gnulib-common.m4, m4/gnulib-comp.m4, m4/gnulib-tool.m4, m4/include_next.m4, m4/intmax_t.m4, m4/inttypes_h.m4, m4/longlong.m4, m4/malloc.m4, m4/math_h.m4, m4/memchr.m4, m4/mempcpy.m4, m4/mmap-anon.m4, m4/multiarch.m4, m4/nocrash.m4, m4/off_t.m4, m4/printf.m4, m4/rawmemchr.m4, m4/size_max.m4, m4/sleep.m4, m4/ssize_t.m4, m4/stdalign.m4, m4/stdbool.m4, m4/stddef_h.m4, m4/stdint.m4, m4/stdint_h.m4, m4/stdio_h.m4, m4/stdlib_h.m4, m4/strcase.m4, m4/strchrnul.m4, m4/strerror.m4, m4/string_h.m4, m4/strings_h.m4, m4/strndup.m4, m4/strnlen.m4, m4/sys_socket_h.m4, m4/sys_types_h.m4, m4/sysexits.m4, m4/unistd_h.m4, m4/vasnprintf.m4, m4/vsnprintf.m4, m4/warn-on-use.m4, m4/wchar_h.m4, m4/wchar_t.m4, m4/wint_t.m4, m4/xsize.m4, tools/snippet/_Noreturn.h, tools/snippet/arg-nonnull.h, tools/snippet/c++defs.h, tools/snippet/warn-on-use.h: New files from gnulib 1af55d85d9762a679b4302d5995f05ccd883e956. * configure.ac, Makefile.am: Adjust to compile gnulib. * src/bin/Makefile.am: Adjust to use gnulib. * README: Mention lib/.
51 lines
1.9 KiB
Text
51 lines
1.9 KiB
Text
# Check for stdalign.h that conforms to C11.
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dnl Copyright 2011-2012 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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# Prepare for substituting <stdalign.h> if it is not supported.
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AC_DEFUN([gl_STDALIGN_H],
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[
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AC_CACHE_CHECK([for working stdalign.h],
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[gl_cv_header_working_stdalign_h],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stdalign.h>
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#include <stddef.h>
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/* Test that alignof yields a result consistent with offsetof.
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This catches GCC bug 52023
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<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. */
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#ifdef __cplusplus
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template <class t> struct alignof_helper { char a; t b; };
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# define ao(type) offsetof (alignof_helper<type>, b)
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#else
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# define ao(type) offsetof (struct { char a; type b; }, b)
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#endif
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char test_double[ao (double) % _Alignof (double) == 0 ? 1 : -1];
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char test_long[ao (long int) % _Alignof (long int) == 0 ? 1 : -1];
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char test_alignof[alignof (double) == _Alignof (double) ? 1 : -1];
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/* Test _Alignas only on platforms where gnulib can help. */
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#if \
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(__GNUC__ || __IBMC__ || __IBMCPP__ \
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|| 0x5110 <= __SUNPRO_C || 1300 <= _MSC_VER)
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int alignas (8) alignas_int = 1;
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char test_alignas[_Alignof (alignas_int) == 8 ? 1 : -1];
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#endif
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]])],
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[gl_cv_header_working_stdalign_h=yes],
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[gl_cv_header_working_stdalign_h=no])])
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if test $gl_cv_header_working_stdalign_h = yes; then
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STDALIGN_H=''
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else
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STDALIGN_H='stdalign.h'
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fi
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AC_SUBST([STDALIGN_H])
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AM_CONDITIONAL([GL_GENERATE_STDALIGN_H], [test -n "$STDALIGN_H"])
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])
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