X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libffi%2Faclocal.m4;h=6d59d179c02cea5c45a83e03147293549a843253;hb=f6a5cf64feeeefab867ee0cd1d6ff10324f57572;hp=5bcef980326ca69a3098c2cea4326a7571c81820;hpb=28c07da5f67fec0f677a408dc0e54d61374b872c;p=pf3gnuchains%2Fgcc-fork.git diff --git a/libffi/aclocal.m4 b/libffi/aclocal.m4 index 5bcef980326..6d59d179c02 100644 --- a/libffi/aclocal.m4 +++ b/libffi/aclocal.m4 @@ -10,6 +10,111 @@ dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A dnl PARTICULAR PURPOSE. +sinclude(../libtool.m4) +dnl The lines below arrange for aclocal not to bring libtool.m4 +dnl AC_PROG_LIBTOOL into aclocal.m4, while still arranging for automake +dnl to add a definition of LIBTOOL to Makefile.in. +ifelse(yes,no,[ +AC_DEFUN([AC_PROG_LIBTOOL],) +AC_SUBST(LIBTOOL) +]) + +AC_DEFUN([AC_COMPILE_CHECK_SIZEOF], +[changequote(<<, >>)dnl +dnl The name to #define. +define(<>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl +dnl The cache variable name. +define(<>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl +changequote([, ])dnl +AC_MSG_CHECKING(size of $1) +AC_CACHE_VAL(AC_CV_NAME, +[for ac_size in 4 8 1 2 16 12 $2 ; do # List sizes in rough order of prevalence. + AC_TRY_COMPILE([#include "confdefs.h" +#include +$2 +], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size) + if test x$AC_CV_NAME != x ; then break; fi +done +]) +if test x$AC_CV_NAME = x ; then + AC_MSG_ERROR([cannot determine a size for $1]) +fi +AC_MSG_RESULT($AC_CV_NAME) +AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1]) +undefine([AC_TYPE_NAME])dnl +undefine([AC_CV_NAME])dnl +]) + +AC_DEFUN([AC_C_BIGENDIAN_CROSS], +[AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian, +[ac_cv_c_bigendian=unknown +# See if sys/param.h defines the BYTE_ORDER macro. +AC_TRY_COMPILE([#include +#include ], [ +#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN + bogus endian macros +#endif], [# It does; now see whether it defined to BIG_ENDIAN or not. +AC_TRY_COMPILE([#include +#include ], [ +#if BYTE_ORDER != BIG_ENDIAN + not big endian +#endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)]) +if test $ac_cv_c_bigendian = unknown; then +AC_TRY_RUN([main () { + /* Are we little or big endian? From Harbison&Steele. */ + union + { + long l; + char c[sizeof (long)]; + } u; + u.l = 1; + exit (u.c[sizeof (long) - 1] == 1); +}], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes, +[ echo $ac_n "cross-compiling... " 2>&AC_FD_MSG ]) +fi]) +if test $ac_cv_c_bigendian = unknown; then +AC_MSG_CHECKING(to probe for byte ordering) +[ +cat >conftest.c <&AC_FD_MSG + ac_cv_c_bigendian=yes + fi + if test `grep -l LiTTleEnDian conftest.o` ; then + echo $ac_n ' little endian probe OK, ' 1>&AC_FD_MSG + if test $ac_cv_c_bigendian = yes ; then + ac_cv_c_bigendian=unknown; + else + ac_cv_c_bigendian=no + fi + fi + echo $ac_n 'guessing bigendian ... ' >&AC_FD_MSG + fi + fi +AC_MSG_RESULT($ac_cv_c_bigendian) +fi +if test $ac_cv_c_bigendian = yes; then + AC_DEFINE(WORDS_BIGENDIAN, 1, [whether byteorder is bigendian]) + BYTEORDER=4321 +else + BYTEORDER=1234 +fi +AC_DEFINE_UNQUOTED(BYTEORDER, $BYTEORDER, [1234 = LIL_ENDIAN, 4321 = BIGENDIAN]) +if test $ac_cv_c_bigendian = unknown; then + AC_MSG_ERROR(unknown endianess - sorry, please pre-set ac_cv_c_bigendian) +fi +]) + # Like AC_CONFIG_HEADER, but automatically create stamp file. 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