Mercurial > gnulib
view m4/fsusage.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
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# serial 34 # Obtaining file system usage information. # Copyright (C) 1997-1998, 2000-2001, 2003-2019 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. # Written by Jim Meyering. AC_DEFUN([gl_FSUSAGE], [ AC_CHECK_HEADERS_ONCE([sys/param.h]) AC_CHECK_HEADERS_ONCE([sys/vfs.h sys/fs_types.h]) AC_CHECK_HEADERS([sys/mount.h], [], [], [AC_INCLUDES_DEFAULT [#if HAVE_SYS_PARAM_H #include <sys/param.h> #endif]]) gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no]) ]) # Try to determine how a program can obtain file system usage information. # If successful, define the appropriate symbol (see fsusage.c) and # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND. # # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) AC_DEFUN([gl_FILE_SYSTEM_USAGE], [ dnl Enable large-file support. This has the effect of changing the size dnl of field f_blocks in 'struct statvfs' from 32 bit to 64 bit on dnl glibc/Hurd, HP-UX 11, Solaris (32-bit mode). It also changes the size dnl of field f_blocks in 'struct statfs' from 32 bit to 64 bit on dnl Mac OS X >= 10.5 (32-bit mode). AC_REQUIRE([AC_SYS_LARGEFILE]) AC_MSG_CHECKING([how to get file system space usage]) ac_fsusage_space=no # Perform only the link test since it seems there are no variants of the # statvfs function. This check is more than just AC_CHECK_FUNCS([statvfs]) # because that got a false positive on SCO OSR5. Adding the declaration # of a 'struct statvfs' causes this test to fail (as it should) on such # systems. That system is reported to work fine with STAT_STATFS4 which # is what it gets when this test fails. if test $ac_fsusage_space = no; then # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0, # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS. AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs], [AC_LINK_IFELSE( [AC_LANG_PROGRAM([[ #include <sys/types.h> #ifdef __osf__ "Do not use Tru64's statvfs implementation" #endif #include <sys/statvfs.h> struct statvfs fsd; #if defined __APPLE__ && defined __MACH__ #include <limits.h> /* On Mac OS X >= 10.5, f_blocks in 'struct statvfs' is a 32-bit quantity; that commonly limits file systems to 4 TiB. Whereas f_blocks in 'struct statfs' is a 64-bit type, thanks to the large-file support that was enabled above. In this case, don't use statvfs(); use statfs() instead. */ int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1]; #endif ]], [[statvfs (0, &fsd);]])], [fu_cv_sys_stat_statvfs=yes], [fu_cv_sys_stat_statvfs=no]) ]) if test $fu_cv_sys_stat_statvfs = yes; then ac_fsusage_space=yes # AIX >= 5.2 has statvfs64 that has a wider f_blocks field than statvfs. # glibc, HP-UX, IRIX, Solaris have statvfs64 as well, but on these systems # statvfs with large-file support is already equivalent to statvfs64. AC_CACHE_CHECK([whether to use statvfs64], [fu_cv_sys_stat_statvfs64], [AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include <sys/types.h> #include <sys/statvfs.h> struct statvfs64 fsd; int check_f_blocks_larger_in_statvfs64 [sizeof (((struct statvfs64 *) 0)->f_blocks) > sizeof (((struct statvfs *) 0)->f_blocks) ? 1 : -1]; ]], [[statvfs64 (0, &fsd);]])], [fu_cv_sys_stat_statvfs64=yes], [fu_cv_sys_stat_statvfs64=no]) ]) if test $fu_cv_sys_stat_statvfs64 = yes; then AC_DEFINE([STAT_STATVFS64], [1], [Define if statvfs64 should be preferred over statvfs.]) else AC_DEFINE([STAT_STATVFS], [1], [Define if there is a function named statvfs. (SVR4)]) fi fi fi # Check for this unconditionally so we have a # good fallback on glibc/Linux > 2.6 < 2.6.36 AC_CACHE_CHECK([for two-argument statfs with statfs.f_frsize member], [fu_cv_sys_stat_statfs2_frsize], [AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> #endif #ifdef HAVE_SYS_MOUNT_H #include <sys/mount.h> #endif #ifdef HAVE_SYS_VFS_H #include <sys/vfs.h> #endif int main () { struct statfs fsd; fsd.f_frsize = 0; return statfs (".", &fsd) != 0; }]])], [fu_cv_sys_stat_statfs2_frsize=yes], [fu_cv_sys_stat_statfs2_frsize=no], [fu_cv_sys_stat_statfs2_frsize=no]) ]) if test $fu_cv_sys_stat_statfs2_frsize = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS2_FRSIZE], [1], [Define if statfs takes 2 args and struct statfs has a field named f_frsize. (glibc/Linux > 2.6)]) fi if test $ac_fsusage_space = no; then # DEC Alpha running OSF/1 AC_CACHE_CHECK([for 3-argument statfs function (DEC OSF/1)], [fu_cv_sys_stat_statfs3_osf1], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <sys/param.h> #include <sys/types.h> #include <sys/mount.h> int main () { struct statfs fsd; fsd.f_fsize = 0; return statfs (".", &fsd, sizeof (struct statfs)) != 0; }]])], [fu_cv_sys_stat_statfs3_osf1=yes], [fu_cv_sys_stat_statfs3_osf1=no], [fu_cv_sys_stat_statfs3_osf1=no]) ]) if test $fu_cv_sys_stat_statfs3_osf1 = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS3_OSF1], [1], [Define if statfs takes 3 args. (DEC Alpha running OSF/1)]) fi fi if test $ac_fsusage_space = no; then # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4. # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0, # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.) # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and # <sys/vfs.h>.) # (On Solaris, statfs has 4 arguments.) AC_CACHE_CHECK([for two-argument statfs with statfs.f_bsize member (AIX, 4.3BSD)], [fu_cv_sys_stat_statfs2_bsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> #endif #ifdef HAVE_SYS_MOUNT_H #include <sys/mount.h> #endif #ifdef HAVE_SYS_VFS_H #include <sys/vfs.h> #endif int main () { struct statfs fsd; fsd.f_bsize = 0; return statfs (".", &fsd) != 0; }]])], [fu_cv_sys_stat_statfs2_bsize=yes], [fu_cv_sys_stat_statfs2_bsize=no], [fu_cv_sys_stat_statfs2_bsize=no]) ]) if test $fu_cv_sys_stat_statfs2_bsize = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS2_BSIZE], [1], [Define if statfs takes 2 args and struct statfs has a field named f_bsize. (4.3BSD, SunOS 4, HP-UX)]) fi fi if test $ac_fsusage_space = no; then # SVR3 # (Solaris already handled above.) AC_CACHE_CHECK([for four-argument statfs (SVR3)], [fu_cv_sys_stat_statfs4], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <sys/types.h> #include <sys/statfs.h> int main () { struct statfs fsd; return statfs (".", &fsd, sizeof fsd, 0) != 0; }]])], [fu_cv_sys_stat_statfs4=yes], [fu_cv_sys_stat_statfs4=no], [fu_cv_sys_stat_statfs4=no]) ]) if test $fu_cv_sys_stat_statfs4 = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS4], [1], [Define if statfs takes 4 args. (SVR3, old Irix)]) fi fi if test $ac_fsusage_space = no; then # 4.4BSD and older NetBSD # (OSF/1 already handled above.) # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.) # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in # <sys/mount.h>.) AC_CACHE_CHECK([for two-argument statfs with statfs.f_fsize member (4.4BSD and NetBSD)], [fu_cv_sys_stat_statfs2_fsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <sys/types.h> #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> #endif #ifdef HAVE_SYS_MOUNT_H #include <sys/mount.h> #endif int main () { struct statfs fsd; fsd.f_fsize = 0; return statfs (".", &fsd) != 0; }]])], [fu_cv_sys_stat_statfs2_fsize=yes], [fu_cv_sys_stat_statfs2_fsize=no], [fu_cv_sys_stat_statfs2_fsize=no]) ]) if test $fu_cv_sys_stat_statfs2_fsize = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS2_FSIZE], [1], [Define if statfs takes 2 args and struct statfs has a field named f_fsize. (4.4BSD, NetBSD)]) fi fi AS_IF([test $ac_fsusage_space = yes], [$1], [$2]) ]) # Check for SunOS statfs brokenness wrt partitions 2GB and larger. # If <sys/vfs.h> exists and struct statfs has a member named f_spare, # enable the work-around code in fsusage.c. AC_DEFUN([gl_STATFS_TRUNCATES], [ AC_CACHE_CHECK([for statfs that truncates block counts], [fu_cv_sys_truncating_statfs], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ #if !defined(sun) && !defined(__sun) choke -- this is a workaround for a Sun-specific problem #endif #include <sys/types.h> #include <sys/vfs.h> ]], [[struct statfs t; long c = *(t.f_spare); if (c) return 0; ]])], [fu_cv_sys_truncating_statfs=yes], [fu_cv_sys_truncating_statfs=no]) ]) if test $fu_cv_sys_truncating_statfs = yes; then AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1], [Define if the block counts reported by statfs may be truncated to 2GB and the correct values may be stored in the f_spare array. (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem. SunOS 4.1.1 seems not to be affected.)]) fi ]) # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE. AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA], [ AC_CHECK_HEADERS([sys/fs/s5param.h sys/statfs.h]) gl_STATFS_TRUNCATES ])