diff options
Diffstat (limited to 'm4/largefile.m4')
| -rw-r--r-- | m4/largefile.m4 | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/m4/largefile.m4 b/m4/largefile.m4 index 8d4bb7c..cbe9bc1 100644 --- a/m4/largefile.m4 +++ b/m4/largefile.m4 @@ -1,7 +1,7 @@ # Enable large files on systems where this is not the default. # Enable support for files on Linux file systems with 64-bit inode numbers. -# Copyright 1992-1996, 1998-2023 Free Software Foundation, Inc. +# Copyright 1992-1996, 1998-2024 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -171,8 +171,9 @@ AC_DEFUN([AC_SYS_YEAR2038_RECOMMENDED], AS_IF([test "$enable_year2038,$ac_have_year2038" = yes,no], [AC_MSG_FAILURE(m4_text_wrap( [could not enable timestamps after mid-January 2038. - Did you mean to build a 64-bit binary? (E.g., 'CC="${CC} -m64"'.) - To proceed with 32-bit time_t, configure with '--disable-year2038'.], + This package recommends support for these later timestamps. + However, to proceed with signed 32-bit time_t even though it + will fail then, configure with '--disable-year2038'.], [], [], [55]))])]) # _AC_SYS_LARGEFILE_TEST_CODE @@ -180,13 +181,16 @@ AS_IF([test "$enable_year2038,$ac_have_year2038" = yes,no], # C code used to probe for large file support. m4_define([_AC_SYS_LARGEFILE_TEST_CODE], [@%:@include <sys/types.h> - /* Check that off_t can represent 2**63 - 1 correctly. - We can't simply define LARGE_OFF_T to be 9223372036854775807, +@%:@ifndef FTYPE +@%:@ define FTYPE off_t +@%:@endif + /* Check that FTYPE can represent 2**63 - 1 correctly. + We can't simply define LARGE_FTYPE to be 9223372036854775807, since some C++ compilers masquerading as C compilers incorrectly reject 9223372036854775807. */ -@%:@define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31)) - int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721 - && LARGE_OFF_T % 2147483647 == 1) +@%:@define LARGE_FTYPE (((FTYPE) 1 << 31 << 31) - 1 + ((FTYPE) 1 << 31 << 31)) + int FTYPE_is_large[[(LARGE_FTYPE % 2147483629 == 721 + && LARGE_FTYPE % 2147483647 == 1) ? 1 : -1]];[]dnl ]) # Defined by Autoconf 2.71 and circa 2022 Gnulib unwisely depended on it. @@ -226,7 +230,13 @@ AC_DEFUN([_AC_SYS_LARGEFILE_PROBE], AS_IF([test x"$ac_opt" != x"none needed"], [CC="$ac_save_CC $ac_opt"]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([_AC_SYS_LARGEFILE_TEST_CODE])], - [ac_cv_sys_largefile_opts="$ac_opt" + [AS_IF([test x"$ac_opt" = x"none needed"], + [# GNU/Linux s390x and alpha need _FILE_OFFSET_BITS=64 for wide ino_t. + CC="$CC -DFTYPE=ino_t" + AC_COMPILE_IFELSE([], [], + [CC="$CC -D_FILE_OFFSET_BITS=64" + AC_COMPILE_IFELSE([], [ac_opt='-D_FILE_OFFSET_BITS=64'])])]) + ac_cv_sys_largefile_opts=$ac_opt ac_opt_found=yes]) test $ac_opt_found = no || break done @@ -237,7 +247,7 @@ AC_DEFUN([_AC_SYS_LARGEFILE_PROBE], AC_REQUIRE([AC_CANONICAL_HOST]) if test $ac_opt_found != yes; then AS_CASE([$host_os], - [mingw*], + [mingw* | windows*], [ac_cv_sys_largefile_opts="supported through gnulib" ac_opt_found=yes] ) @@ -295,7 +305,7 @@ AC_DEFUN([gl_LARGEFILE], [ AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in - mingw*) + mingw* | windows*) dnl Native Windows. dnl mingw64 defines off_t to a 64-bit type already, if dnl _FILE_OFFSET_BITS=64, which is ensured by AC_SYS_LARGEFILE. |