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 6AC_DEFUN([ACX_LARGEFILE],[dnl 7 8# The tests for host and target for $enable_largefile require 9# canonical names. 10AC_REQUIRE([AC_CANONICAL_HOST]) 11AC_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 $plugins option. 15 16AC_PLUGINS 17 18case "${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([ 40plugin 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 ;; 52esac 53 54AC_SYS_LARGEFILE 55]) 56