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      1 # This macro wraps AC_SYS_LARGEFILE with one exception for Solaris.
      2 # PR binutils/9992: We have to replicate everywhere the behaviour of
      3 # bfd's configure script so that all the directories agree on the size
      4 # of structures used to describe files.
      5 
      6 AC_DEFUN([ACX_LARGEFILE],[dnl
      7 
      8 # The tests for host and target for $enable_largefile require
      9 # canonical names.
     10 AC_REQUIRE([AC_CANONICAL_HOST])
     11 AC_REQUIRE([AC_CANONICAL_TARGET])
     12 
     13 # As the $enable_largefile decision depends on --enable-plugins we must set it
     14 # even in directories otherwise not depending on the $plugins option.
     15 
     16 AC_PLUGINS
     17 
     18 case "${host}" in
     19   sparc-*-solaris*|i?86-*-solaris*)
     20     # On native 32-bit Solaris/SPARC and x86, large-file and procfs support
     21     # were mutually exclusive until Solaris 11.3.  Without procfs support,
     22     # the bfd/ elf module cannot provide certain routines such as
     23     # elfcore_write_prpsinfo or elfcore_write_prstatus.  So unless the user
     24     # explicitly requested large-file support through the
     25     # --enable-largefile switch, disable large-file support in favor of
     26     # procfs support.
     27     #
     28     # Check if <sys/procfs.h> is incompatible with large-file support.
     29     AC_TRY_COMPILE([#define _FILE_OFFSET_BITS 64
     30 #define _STRUCTURED_PROC 1
     31 #include <sys/procfs.h>], , acx_cv_procfs_lfs=yes, acx_cv_procfs_lfs=no)
     32     #
     33     # Forcefully disable large-file support only if necessary, gdb is in
     34     # tree and enabled.
     35     if test "${target}" = "${host}" -a "$acx_cv_procfs_lfs" = no \
     36          -a -d $srcdir/../gdb -a "$enable_gdb" != no; then
     37       : ${enable_largefile="no"}
     38       if test "$plugins" = yes; then
     39 	AC_MSG_WARN([
     40 plugin support disabled; require large-file support which is incompatible with GDB.])
     41 	plugins=no
     42       fi
     43     fi
     44     #
     45     # Explicitly undef _FILE_OFFSET_BITS if enable_largefile=no for the
     46     # benefit of g++ 9+ which predefines it on Solaris.
     47     if test "$enable_largefile" = no; then
     48       LARGEFILE_CPPFLAGS="-U_FILE_OFFSET_BITS"
     49       AC_SUBST(LARGEFILE_CPPFLAGS)
     50     fi
     51     ;;
     52 esac
     53 
     54 AC_SYS_LARGEFILE
     55 ])
     56