forked from Imagelibrary/binutils-gdb
sim/erc32: use SIM_AC_OPTION_HOSTENDIAN to probe for host endianess
This commit is contained in:
Jiri Gaisler
committed by
Mike Frysinger
Mike Frysinger
parent
a4f851ffab
commit
9c5f41df36
256
sim/erc32/configure
vendored
256
sim/erc32/configure
vendored
@@ -761,6 +761,7 @@ enable_sim_trace
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enable_sim_profile
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with_pkgversion
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with_bugurl
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enable_sim_hostendian
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'
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ac_precious_vars='build_alias
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host_alias
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@@ -1403,6 +1404,7 @@ Optional Features:
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--enable-sim-stdio Specify whether to use stdio for console input/output.
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--enable-sim-trace=opts Enable tracing flags
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--enable-sim-profile=opts Enable profiling flags
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--enable-sim-hostendian=end Specify host byte endian orientation.
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Optional Packages:
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--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
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@@ -12354,7 +12356,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12357 "configure"
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#line 12359 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@@ -12460,7 +12462,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12463 "configure"
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#line 12465 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@@ -13098,6 +13100,255 @@ fi
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fi
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# Check whether --enable-sim-hostendian was given.
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if test "${enable_sim_hostendian+set}" = set; then :
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enableval=$enable_sim_hostendian; case "${enableval}" in
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no) sim_hostendian="-DWITH_HOST_BYTE_ORDER=0";;
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b*|B*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN";;
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l*|L*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN";;
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*) as_fn_error "\"Unknown value $enableval for --enable-sim-hostendian\"" "$LINENO" 5; sim_hostendian="";;
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esac
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if test x"$silent" != x"yes" && test x"$sim_hostendian" != x""; then
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echo "Setting hostendian flags = $sim_hostendian" 6>&1
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fi
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else
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if test "x$cross_compiling" = "xno"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
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$as_echo_n "checking whether byte ordering is bigendian... " >&6; }
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if test "${ac_cv_c_bigendian+set}" = set; then :
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$as_echo_n "(cached) " >&6
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else
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ac_cv_c_bigendian=unknown
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# See if we're dealing with a universal compiler.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#ifndef __APPLE_CC__
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not a universal capable compiler
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#endif
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typedef int dummy;
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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# Check for potential -arch flags. It is not universal unless
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# there are at least two -arch flags with different values.
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ac_arch=
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ac_prev=
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for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
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if test -n "$ac_prev"; then
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case $ac_word in
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i?86 | x86_64 | ppc | ppc64)
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if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
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ac_arch=$ac_word
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else
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ac_cv_c_bigendian=universal
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break
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fi
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;;
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esac
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ac_prev=
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elif test "x$ac_word" = "x-arch"; then
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ac_prev=arch
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fi
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done
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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if test $ac_cv_c_bigendian = unknown; then
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# See if sys/param.h defines the BYTE_ORDER macro.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <sys/types.h>
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#include <sys/param.h>
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int
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main ()
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{
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#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
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&& defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
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&& LITTLE_ENDIAN)
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bogus endian macros
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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# It does; now see whether it defined to BIG_ENDIAN or not.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <sys/types.h>
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#include <sys/param.h>
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int
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main ()
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{
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#if BYTE_ORDER != BIG_ENDIAN
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not big endian
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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ac_cv_c_bigendian=yes
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else
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ac_cv_c_bigendian=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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if test $ac_cv_c_bigendian = unknown; then
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# See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <limits.h>
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int
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main ()
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{
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#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
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bogus endian macros
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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# It does; now see whether it defined to _BIG_ENDIAN or not.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <limits.h>
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int
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main ()
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{
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#ifndef _BIG_ENDIAN
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not big endian
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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ac_cv_c_bigendian=yes
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else
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ac_cv_c_bigendian=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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if test $ac_cv_c_bigendian = unknown; then
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# Compile a test program.
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if test "$cross_compiling" = yes; then :
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# Try to guess by grepping values from an object file.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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short int ascii_mm[] =
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{ 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
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short int ascii_ii[] =
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{ 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
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int use_ascii (int i) {
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return ascii_mm[i] + ascii_ii[i];
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}
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short int ebcdic_ii[] =
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{ 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
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short int ebcdic_mm[] =
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{ 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
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int use_ebcdic (int i) {
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return ebcdic_mm[i] + ebcdic_ii[i];
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}
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extern int foo;
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int
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main ()
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{
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return use_ascii (foo) == use_ebcdic (foo);
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
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ac_cv_c_bigendian=yes
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fi
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if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
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if test "$ac_cv_c_bigendian" = unknown; then
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ac_cv_c_bigendian=no
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else
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# finding both strings is unlikely to happen, but who knows?
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ac_cv_c_bigendian=unknown
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fi
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fi
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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$ac_includes_default
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int
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main ()
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{
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/* Are we little or big endian? From Harbison&Steele. */
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union
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{
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long int l;
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char c[sizeof (long int)];
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} u;
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u.l = 1;
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return u.c[sizeof (long int) - 1] == 1;
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_run "$LINENO"; then :
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ac_cv_c_bigendian=no
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else
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ac_cv_c_bigendian=yes
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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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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
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$as_echo "$ac_cv_c_bigendian" >&6; }
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case $ac_cv_c_bigendian in #(
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yes)
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$as_echo "#define WORDS_BIGENDIAN 1" >>confdefs.h
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;; #(
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no)
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;; #(
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universal)
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$as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
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;; #(
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*)
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as_fn_error "unknown endianness
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presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
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esac
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if test $ac_cv_c_bigendian = yes; then
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sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN"
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else
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sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN"
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fi
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else
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sim_hostendian="-DWITH_HOST_BYTE_ORDER=0"
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fi
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fi
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ac_sources="$sim_link_files"
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ac_dests="$sim_link_links"
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while test -n "$ac_sources"; do
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@@ -13232,6 +13483,7 @@ if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
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Usually this means the macro was only invoked conditionally." "$LINENO" 5
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fi
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: ${CONFIG_STATUS=./config.status}
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ac_write_fail=0
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ac_clean_files_save=$ac_clean_files
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