sim: ppc: drop unused /dev/zero logic
Nothing in the tree checks this option, or has checked for decades. The pre-cvs-import ChangeLog suggests this was added & removed back then, but can't be sure as that history doesn't exist in the VCS.
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@ -74,7 +74,6 @@ FLOAT_CFLAGS = @sim_float@
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MONITOR_CFLAGS = @sim_monitor@
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MODEL_CFLAGS = @sim_model@ @sim_default_model@ @sim_model_issue@
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TERMIO_CFLAGS = @sim_termio@
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DEVZERO_CFLAGS = @sim_devzero@
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CONFIG_CFLAGS = \
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$(SMP_CFLAGS) \
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$(XOR_ENDIAN_CFLAGS) \
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@ -84,8 +83,7 @@ CONFIG_CFLAGS = \
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$(FLOAT_CFLAGS) \
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$(MONITOR_CFLAGS) \
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$(MODEL_CFLAGS) \
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$(TERMIO_CFLAGS) \
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$(DEVZERO_CFLAGS)
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$(TERMIO_CFLAGS)
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SIM_FPU_CFLAGS = -DHAVE_COMMON_FPU -I../common -I${srcdir}/../common
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STD_CFLAGS = $(CFLAGS) $(WERROR_CFLAGS) $(INLINE_CFLAGS) $(CONFIG_CFLAGS) $(WARN_CFLAGS) $(INCLUDES) $(INCGNU) $(SIM_FPU_CFLAGS)
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49
sim/ppc/configure
vendored
49
sim/ppc/configure
vendored
@ -621,7 +621,6 @@ ac_includes_default="\
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ac_subst_vars='LTLIBOBJS
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LIBOBJS
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sim_devzero
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sim_termio
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sim_model_issue
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sim_default_model
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@ -4157,53 +4156,6 @@ _ACEOF
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fi
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sim_devzero=""
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/zero" >&5
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$as_echo_n "checking for /dev/zero... " >&6; }
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if ${ac_cv_devzero+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test "$cross_compiling" = yes; then :
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ac_cv_devzero=no
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <fcntl.h>
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main () {
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char buf[2048];
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int i;
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int fd = open ("/dev/zero", O_RDONLY);
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if (fd < 0)
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return 1;
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for (i = 0; i < sizeof (buf); i++)
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buf[i] = 1;
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if (read (fd, buf, sizeof (buf)) != sizeof (buf))
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return 1;
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for (i = 0; i < sizeof (buf); i++)
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if (buf[i])
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return 1;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_run "$LINENO"; then :
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ac_cv_devzero=yes
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else
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ac_cv_devzero=no
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fi
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rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
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conftest.$ac_objext conftest.beam conftest.$ac_ext
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_devzero" >&5
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$as_echo "$ac_cv_devzero" >&6; }
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if test $ac_cv_devzero = yes; then
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sim_devzero="-DHAVE_DEVZERO"
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else
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sim_devzero=""
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fi
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# Since we run commands on the build system, we have to create a
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# separate config header for the build system if build != host.
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if test x$host = x$build; then
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@ -4257,7 +4209,6 @@ fi
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ac_config_files="$ac_config_files Makefile"
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@ -490,33 +490,6 @@ fi
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AC_CHECK_TYPES(long long)
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dnl Figure out if /dev/zero exists or not
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sim_devzero=""
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AC_MSG_CHECKING(for /dev/zero)
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AC_CACHE_VAL(ac_cv_devzero,
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[AC_TRY_RUN([#include <fcntl.h>
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main () {
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char buf[2048];
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int i;
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int fd = open ("/dev/zero", O_RDONLY);
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if (fd < 0)
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return 1;
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for (i = 0; i < sizeof (buf); i++)
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buf[i] = 1;
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if (read (fd, buf, sizeof (buf)) != sizeof (buf))
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return 1;
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for (i = 0; i < sizeof (buf); i++)
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if (buf[i])
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return 1;
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return 0;
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}],[ac_cv_devzero=yes],[ac_cv_devzero=no],[ac_cv_devzero=no])])
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AC_MSG_RESULT($ac_cv_devzero)
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if test $ac_cv_devzero = yes; then
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sim_devzero="-DHAVE_DEVZERO"
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else
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sim_devzero=""
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fi
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# Since we run commands on the build system, we have to create a
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# separate config header for the build system if build != host.
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if test x$host = x$build; then
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@ -570,7 +543,6 @@ AC_SUBST(sim_model)
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AC_SUBST(sim_default_model)
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AC_SUBST(sim_model_issue)
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AC_SUBST(sim_termio)
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AC_SUBST(sim_devzero)
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AC_OUTPUT(Makefile,
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[case x$CONFIG_HEADERS in xconfig.h:config.in) echo > stamp-h ;; esac])
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@ -198,10 +198,6 @@ print_options (void)
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#ifdef HAVE_TERMIO_STRUCTURE
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"HAVE_TERMIO_STRUCTURE",
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#endif
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#ifdef HAVE_DEVZERO
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"HAVE_DEVZERO",
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#endif
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};
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int i;
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