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Added check for target machine endian-ness and put the result into
Makefile.config (ENDIAN variable is set to big or little). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11398 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell
parent
339d8df4c0
commit
0021c31b60
@ -11,6 +11,9 @@ OS=@OS@
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# Target hardware architecture
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ARCH=@ARCH@
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# Endian-ness of the target
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ENDIAN=@ENDIAN@
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# Path to the C++ compiler to use. This is an optional setting, which defaults
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# to whatever your gmake defaults to.
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#
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@ -244,6 +244,9 @@ AC_STRUCT_TM
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dnl Check for various C features
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AC_C_PRINTF_A
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dnl Check for the endianness of the target
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AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
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dnl Check for C++ extensions
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AC_CXX_HAVE_HASH_MAP
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AC_CXX_HAVE_HASH_SET
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206
configure
vendored
206
configure
vendored
@ -465,7 +465,7 @@ ac_includes_default="\
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#endif"
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ac_unique_file=""Makefile.config.in""
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS subdirs INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVMGCCDIR ARCH CXX CXXFLAGS LDFLAGS CPPFLAGS ac_ct_CXX EXEEXT OBJEXT CC CFLAGS ac_ct_CC CPP ifGNUmake LEX LEXLIB LEX_OUTPUT_ROOT YACC BISON EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL DOT ETAGS ETAGSFLAGS PYTHON QMTEST ALLOCA MMAP_FILE ENABLE_OPTIMIZED SPEC_ROOT USE_SPEC SPEC95_ROOT USE_SPEC95 UPB DISABLE_LLC_DIFFS JIT LLVMCC1 LLVMCC1PLUS BCR PAPIDIR SHLIBEXT LIBOBJS LTLIBOBJS'
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS subdirs INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVMGCCDIR ARCH CXX CXXFLAGS LDFLAGS CPPFLAGS ac_ct_CXX EXEEXT OBJEXT CC CFLAGS ac_ct_CC CPP ifGNUmake LEX LEXLIB LEX_OUTPUT_ROOT YACC BISON EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL DOT ETAGS ETAGSFLAGS PYTHON QMTEST ENDIAN ALLOCA MMAP_FILE ENABLE_OPTIMIZED SPEC_ROOT USE_SPEC SPEC95_ROOT USE_SPEC95 UPB DISABLE_LLC_DIFFS JIT LLVMCC1 LLVMCC1PLUS BCR PAPIDIR SHLIBEXT LIBOBJS LTLIBOBJS'
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ac_subst_files=''
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# Initialize some variables set by options.
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@ -19481,6 +19481,209 @@ _ACEOF
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fi
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echo "$as_me:$LINENO: checking whether byte ordering is bigendian" >&5
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echo $ECHO_N "checking whether byte ordering is bigendian... $ECHO_C" >&6
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if test "${ac_cv_c_bigendian+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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# See if sys/param.h defines the BYTE_ORDER macro.
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h>
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#include <sys/param.h>
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int
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main ()
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{
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#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
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bogus endian macros
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#endif
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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# It does; now see whether it defined to BIG_ENDIAN or not.
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h>
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#include <sys/param.h>
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int
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main ()
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{
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#if BYTE_ORDER != BIG_ENDIAN
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not big endian
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#endif
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ac_cv_c_bigendian=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_cv_c_bigendian=no
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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# It does not; compile a test program.
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if test "$cross_compiling" = yes; then
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# try to guess the endianness by grepping values into an object file
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ac_cv_c_bigendian=unknown
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
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short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
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void _ascii () { char *s = (char *) ascii_mm; s = (char *) ascii_ii; }
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short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
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short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
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void _ebcdic () { char *s = (char *) ebcdic_mm; s = (char *) ebcdic_ii; }
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int
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main ()
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{
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_ascii (); _ebcdic ();
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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if grep BIGenDianSyS conftest.$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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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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else
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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int
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main ()
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{
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/* Are we little or big endian? From Harbison&Steele. */
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union
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{
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long l;
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char c[sizeof (long)];
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} u;
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u.l = 1;
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exit (u.c[sizeof (long) - 1] == 1);
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}
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_ACEOF
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rm -f conftest$ac_exeext
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if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
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(eval $ac_link) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } && { ac_try='./conftest$ac_exeext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ac_cv_c_bigendian=no
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else
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echo "$as_me: program exited with status $ac_status" >&5
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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( exit $ac_status )
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ac_cv_c_bigendian=yes
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fi
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rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
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fi
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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fi
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echo "$as_me:$LINENO: result: $ac_cv_c_bigendian" >&5
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echo "${ECHO_T}$ac_cv_c_bigendian" >&6
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case $ac_cv_c_bigendian in
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yes)
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ENDIAN=big
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;;
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no)
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ENDIAN=little
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;;
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*)
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{ { echo "$as_me:$LINENO: error: unknown endianness
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presetting ac_cv_c_bigendian=no (or yes) will help" >&5
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echo "$as_me: error: unknown endianness
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presetting ac_cv_c_bigendian=no (or yes) will help" >&2;}
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{ (exit 1); exit 1; }; } ;;
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esac
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echo "$as_me:$LINENO: checking whether the compiler implements namespaces" >&5
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echo $ECHO_N "checking whether the compiler implements namespaces... $ECHO_C" >&6
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if test "${ac_cv_cxx_namespaces+set}" = set; then
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@ -22460,6 +22663,7 @@ s,@ETAGS@,$ETAGS,;t t
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s,@ETAGSFLAGS@,$ETAGSFLAGS,;t t
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s,@PYTHON@,$PYTHON,;t t
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s,@QMTEST@,$QMTEST,;t t
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s,@ENDIAN@,$ENDIAN,;t t
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s,@ALLOCA@,$ALLOCA,;t t
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s,@MMAP_FILE@,$MMAP_FILE,;t t
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s,@ENABLE_OPTIMIZED@,$ENABLE_OPTIMIZED,;t t
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