Mercurial > hg > octave-lyh > gnulib-hg
changeset 1895:36b9dcb0dc9e
New file. It contains the old contents of
lfs.m4, except that all names with prefix AC_LFS have been
changed to use the prefix AC_SYS_LARGEFILE instead, to be
compatible with future autoconf versions. Also, some minor m4
quoting problems have been fixed.
author | Jim Meyering <jim@meyering.net> |
---|---|
date | Sun, 01 Aug 1999 08:59:46 +0000 |
parents | f80f058b943b |
children | 6be8a162d016 |
files | m4/largefile.m4 |
diffstat | 1 files changed, 115 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
new file mode 100644 --- /dev/null +++ b/m4/largefile.m4 @@ -0,0 +1,115 @@ +#serial 4 + +dnl By default, many hosts won't let programs access large files; +dnl one must use special compiler options to get large-file access to work. +dnl For more details about this brain damage please see: +dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html + +dnl Written by Paul Eggert <eggert@twinsun.com>. + +dnl Internal subroutine of AC_SYS_LARGEFILE. +dnl AC_SYS_LARGEFILE_FLAGS(FLAGSNAME) +AC_DEFUN(AC_SYS_LARGEFILE_FLAGS, + [AC_CACHE_CHECK([for $1 value to request large file support], + ac_cv_sys_largefile_$1, + [ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || { + ac_cv_sys_largefile_$1=no + ifelse($1, CFLAGS, + [case "$host_os" in + # IRIX 6.2 and later require cc -n32. +changequote(, )dnl + irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*) +changequote([, ])dnl + if test "$GCC" != yes; then + ac_cv_sys_largefile_CFLAGS=-n32 + fi + ac_save_CC="$CC" + CC="$CC $ac_cv_sys_largefile_CFLAGS" + AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no) + CC="$ac_save_CC" + esac]) + }])]) + +dnl Internal subroutine of AC_SYS_LARGEFILE. +dnl AC_SYS_LARGEFILE_SPACE_APPEND(VAR, VAL) +AC_DEFUN(AC_SYS_LARGEFILE_SPACE_APPEND, + [case $2 in + no) ;; + ?*) + case "[$]$1" in + '') $1=$2 ;; + *) $1=[$]$1' '$2 ;; + esac ;; + esac]) + +dnl Internal subroutine of AC_SYS_LARGEFILE. +dnl AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAULT) +AC_DEFUN(AC_SYS_LARGEFILE_MACRO_VALUE, + [AC_CACHE_CHECK([for $1], $2, + [$2=no +changequote(, )dnl + $4 + for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do + case "$ac_flag" in + -D$1) + $2=1 ;; + -D$1=*) + $2=`expr " $ac_flag" : '[^=]*=\(.*\)'` ;; + esac + done +changequote([, ])dnl + ]) + if test "[$]$2" != no; then + AC_DEFINE_UNQUOTED([$1], [$]$2, [$3]) + fi]) + +AC_DEFUN(AC_SYS_LARGEFILE, + [AC_REQUIRE([AC_CANONICAL_HOST]) + AC_ARG_ENABLE(largefile, + [ --disable-largefile omit support for large files]) + if test "$enable_largefile" != no; then + AC_CHECK_TOOL(GETCONF, getconf) + AC_SYS_LARGEFILE_FLAGS(CFLAGS) + AC_SYS_LARGEFILE_FLAGS(LDFLAGS) + AC_SYS_LARGEFILE_FLAGS(LIBS) + + for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do + case "$ac_flag" in + no) ;; + -D_FILE_OFFSET_BITS=*) ;; + -D_LARGEFILE_SOURCE | -D_LARGEFILE_SOURCE=*) ;; + -D_LARGE_FILES | -D_LARGE_FILES=*) ;; + -D?* | -I?*) + AC_SYS_LARGEFILE_SPACE_APPEND(CPPFLAGS, "$ac_flag") ;; + *) + AC_SYS_LARGEFILE_SPACE_APPEND(CFLAGS, "$ac_flag") ;; + esac + done + AC_SYS_LARGEFILE_SPACE_APPEND(LDFLAGS, "$ac_cv_sys_largefile_LDFLAGS") + AC_SYS_LARGEFILE_SPACE_APPEND(LIBS, "$ac_cv_sys_largefile_LIBS") + AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, + ac_cv_sys_file_offset_bits, + [Number of bits in a file offset, on hosts where this is settable.] + [case "$host_os" in + # HP-UX 10.20 and later + hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*) + ac_cv_sys_file_offset_bits=64 ;; + esac]) + AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, + ac_cv_sys_largefile_source, + [Define to make fseeko etc. visible, on some hosts.], + [case "$host_os" in + # HP-UX 10.20 and later + hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*) + ac_cv_sys_largefile_source=1 ;; + esac]) + AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, + ac_cv_sys_large_files, + [Define for large files, on AIX-style hosts.], + [case "$host_os" in + # AIX 4.2 and later + aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*) + ac_cv_sys_large_files=1 ;; + esac]) + fi + ])