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CFLAGS="${CFLAGS_OLD}" CXXFLAGS="${CXXFLAGS_OLD}" # 2. try the older compiler option ## TODO: cross compile problem AMD64=`isainfo -n 2>&1 | grep amd64` SOL64=`$CXX -xtarget=generic64 2>&1 && $CC -xtarget=generic64 2>&1 | grep -v usage:` if test -z "$SOL64" && test -n "$AMD64"; then CFLAGS="${CFLAGS} -xtarget=generic64" CXXFLAGS="${CXXFLAGS} -xtarget=generic64" CAN_BUILD_64=yes fi fi ;; ia64-*-linux*) # check for ecc/ecpc compiler support ## TODO: cross compiler problem if test -n "`$CXX --help 2>&1 && $CC --help 2>&1 | grep -v Intel`"; then if test -n "`$CXX --help 2>&1 && $CC --help 2>&1 | grep -v Itanium`"; then CAN_BUILD_64=yes fi fi ;; *-*-cygwin) # vcvarsamd64.bat should have been used to enable 64-bit builds. # We only do this check to display the correct answer. ## TODO: cross compiler problem if test -n "`$CXX -help 2>&1 | grep 'for x64'`"; then CAN_BUILD_64=yes fi ;; *-*-aix*|powerpc64-*-linux*) CFLAGS="${CFLAGS} -q64" CXXFLAGS="${CXXFLAGS} -q64" LDFLAGS="${LDFLAGS} -q64" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main(void) {return (sizeof(void*)*8==64)?0:1;} _ACEOF if ac_fn_c_try_compile "$LINENO"; then : CAN_BUILD_64=yes else CAN_BUILD_64=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext if test "$CAN_BUILD_64" = yes; then # worked- set other options. case "${host}" in *-*-aix*) # tell AIX what executable mode to use. ARFLAGS="${ARFLAGS} -X64" esac fi ;; *-*-hpux*) # First we try the newer +DD64, if that doesn't work, # try other options. 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(defined _LITTLE_ENDIAN || defined _BIG_ENDIAN) bogus endian macros #endif ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : # It does; now see whether it defined to _BIG_ENDIAN or not. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main () { #ifndef _BIG_ENDIAN not big endian #endif ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : ac_cv_c_bigendian=yes else ac_cv_c_bigendian=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi if test $ac_cv_c_bigendian = unknown; then # Compile a test program. if test "$cross_compiling" = yes; then : # Try to guess by grepping values from an object file. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ short int ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 }; short int ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 }; int use_ascii (int i) { return ascii_mm[i] + ascii_ii[i]; } short int ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 }; short int ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 }; int use_ebcdic (int i) { return ebcdic_mm[i] + ebcdic_ii[i]; } extern int foo; int main () { return use_ascii (foo) == use_ebcdic (foo); ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then ac_cv_c_bigendian=yes fi if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then if test "$ac_cv_c_bigendian" = unknown; then ac_cv_c_bigendian=no else # finding both strings is unlikely to happen, but who knows? ac_cv_c_bigendian=unknown fi fi fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ $ac_includes_default int main () { /* Are we little or big endian? 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