diff options
Diffstat (limited to 'gnulib-m4/stdalign.m4')
-rw-r--r-- | gnulib-m4/stdalign.m4 | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/gnulib-m4/stdalign.m4 b/gnulib-m4/stdalign.m4 deleted file mode 100644 index 033b0d3..0000000 --- a/gnulib-m4/stdalign.m4 +++ /dev/null @@ -1,57 +0,0 @@ -# Check for stdalign.h that conforms to C11. - -dnl Copyright 2011-2015 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -# Prepare for substituting <stdalign.h> if it is not supported. - -AC_DEFUN([gl_STDALIGN_H], -[ - AC_CACHE_CHECK([for working stdalign.h], - [gl_cv_header_working_stdalign_h], - [AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM( - [[#include <stdalign.h> - #include <stddef.h> - - /* Test that alignof yields a result consistent with offsetof. - This catches GCC bug 52023 - <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. */ - #ifdef __cplusplus - template <class t> struct alignof_helper { char a; t b; }; - # define ao(type) offsetof (alignof_helper<type>, b) - #else - # define ao(type) offsetof (struct { char a; type b; }, b) - #endif - char test_double[ao (double) % _Alignof (double) == 0 ? 1 : -1]; - char test_long[ao (long int) % _Alignof (long int) == 0 ? 1 : -1]; - char test_alignof[alignof (double) == _Alignof (double) ? 1 : -1]; - - /* Test _Alignas only on platforms where gnulib can help. */ - #if \ - ((defined __cplusplus && 201103 <= __cplusplus) \ - || (defined __APPLE__ && defined __MACH__ \ - ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \ - : __GNUC__) \ - || __HP_cc || __HP_aCC || __IBMC__ || __IBMCPP__ \ - || __ICC || 0x5110 <= __SUNPRO_C \ - || 1300 <= _MSC_VER) - struct alignas_test { char c; char alignas (8) alignas_8; }; - char test_alignas[offsetof (struct alignas_test, alignas_8) == 8 - ? 1 : -1]; - #endif - ]])], - [gl_cv_header_working_stdalign_h=yes], - [gl_cv_header_working_stdalign_h=no])]) - - if test $gl_cv_header_working_stdalign_h = yes; then - STDALIGN_H='' - else - STDALIGN_H='stdalign.h' - fi - - AC_SUBST([STDALIGN_H]) - AM_CONDITIONAL([GL_GENERATE_STDALIGN_H], [test -n "$STDALIGN_H"]) -]) |