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TheRock/debug-tools/rocgdb/source/config/largefile.m4
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# This macro wraps AC_SYS_LARGEFILE with one exception for Solaris.
# PR binutils/9992: We have to replicate everywhere the behaviour of
# bfd's configure script so that all the directories agree on the size
# of structures used to describe files.
AC_DEFUN([ACX_LARGEFILE],[dnl
# The tests for host and target for $enable_largefile require
# canonical names.
AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([AC_CANONICAL_TARGET])
# As the $enable_largefile decision depends on --enable-plugins we must set it
# even in directories otherwise not depending on the $plugins option.
AC_PLUGINS
case "${host}" in
sparc-*-solaris*|i?86-*-solaris*)
# On native 32-bit Solaris/SPARC and x86, large-file and procfs support
# were mutually exclusive until Solaris 11.3. Without procfs support,
# the bfd/ elf module cannot provide certain routines such as
# elfcore_write_prpsinfo or elfcore_write_prstatus. So unless the user
# explicitly requested large-file support through the
# --enable-largefile switch, disable large-file support in favor of
# procfs support.
#
# Check if <sys/procfs.h> is incompatible with large-file support.
AC_TRY_COMPILE([#define _FILE_OFFSET_BITS 64
#define _STRUCTURED_PROC 1
#include <sys/procfs.h>], , acx_cv_procfs_lfs=yes, acx_cv_procfs_lfs=no)
#
# Forcefully disable large-file support only if necessary, gdb is in
# tree and enabled.
if test "${target}" = "${host}" -a "$acx_cv_procfs_lfs" = no \
-a -d $srcdir/../gdb -a "$enable_gdb" != no; then
: ${enable_largefile="no"}
if test "$plugins" = yes; then
AC_MSG_WARN([
plugin support disabled; require large-file support which is incompatible with GDB.])
plugins=no
fi
fi
#
# Explicitly undef _FILE_OFFSET_BITS if enable_largefile=no for the
# benefit of g++ 9+ which predefines it on Solaris.
if test "$enable_largefile" = no; then
LARGEFILE_CPPFLAGS="-U_FILE_OFFSET_BITS"
AC_SUBST(LARGEFILE_CPPFLAGS)
fi
;;
esac
AC_SYS_LARGEFILE
])