+++ /dev/null
-# BEGIN OF GRAS ARCH CHECK
-dnl
-dnl GRAS_DO_CHECK_SIZEOF: Get the size of a datatype (even in cross-compile)
-dnl 1: type tested
-dnl 2: extra include lines
-dnl 3: extra sizes to test
-dnl ("adapted" from openldap)
-dnl
-AC_DEFUN([GRAS_DO_CHECK_SIZEOF],
-[changequote(<<, >>)dnl
- dnl The cache variable name (and of the result).
- define(<<GRAS_CHECK_SIZEOF_RES>>, translit(ac_cv_sizeof_$1, [ *()], [_pLR]))dnl
- changequote([, ])dnl
- AC_CACHE_VAL(GRAS_CHECK_SIZEOF_RES,
- [for ac_size in 4 8 1 2 16 $3 ; do # List sizes in rough order of prevalence.
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include "confdefs.h"
- #include <sys/types.h>
- $2
- ], [switch (0) case 0: case (sizeof ($1) == $ac_size):;]), GRAS_CHECK_SIZEOF_RES=$ac_size)
- if test x$GRAS_CHECK_SIZEOF_RES != x ; then break; fi
- done
- ])
-])
-
-dnl
-dnl GRAS_CHECK_SIZEOF: Get the size of a datatype (even in cross-compile), with msg display, and define the result
-dnl 1: type tested
-dnl 2: extra include lines
-dnl 3: extra sizes to test
-dnl ("adapted" from openldap)
-dnl
-AC_DEFUN([GRAS_CHECK_SIZEOF],
-[AC_MSG_CHECKING(size of $1)
-GRAS_DO_CHECK_SIZEOF($1,$2)
-if test x$GRAS_CHECK_SIZEOF_RES = x ; then
- AC_MSG_ERROR([cannot determine a size for $1])
-fi
-AC_MSG_RESULT($GRAS_CHECK_SIZEOF_RES)
-])
-
-dnl
-dnl GRAS_TWO_COMPLEMENT([type]): Make sure the type is two-complement
-dnl warning, this does not work with char (quite logical)
-dnl
-AC_DEFUN([GRAS_TWO_COMPLEMENT],
-[
-AC_MSG_CHECKING(whether $1 is two-complement)
-AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include "confdefs.h"
-union {
- signed $1 testInt;
- unsigned char bytes[sizeof($1)];
-} intTester;
-]],[[
- intTester.testInt = -2;
- return ((unsigned int)intTester.bytes[0] +
- (unsigned int)intTester.bytes[sizeof($1) - 1]) - 509; /* should be 0 */
-]])], dnl end of AC LANG PROGRAM
-[two_complement=yes],[two_complement=no] )dnl end of AC COMPILE IFELSE
-
-AC_MSG_RESULT($two_complement)
-if test x$two_complement != xyes ; then
- AC_MSG_ERROR([GRAS works only two-complement integers (yet)])
-fi
-])
-
-dnl
-dnl GRAS_SIGNED_SIZEOF: Get the size of the datatype, and make sure that
-dnl signed, unsigned and unspecified have the same size
-dnl
-AC_DEFUN([GRAS_SIGNED_SIZEOF],
-[AC_MSG_CHECKING(size of $1)
-GRAS_DO_CHECK_SIZEOF($1,$2)
-unspecif=$GRAS_CHECK_SIZEOF_RES
-if test x$unspecif = x ; then
- AC_MSG_ERROR([cannot determine a size for $1])
-fi
-
-GRAS_DO_CHECK_SIZEOF(signed $1,$2)
-signed=$GRAS_CHECK_SIZEOF_RES
-if test x$signed = x ; then
- AC_MSG_ERROR([cannot determine a size for signed $1])
-fi
-if test x$unspecif != x$signed ; then
- AC_MSG_ERROR(['signed $1' and '$1' have different sizes ! ($signed != $unspecif)])
-fi
-
-GRAS_DO_CHECK_SIZEOF(unsigned $1,$2)
-unsigned=$GRAS_CHECK_SIZEOF_RES
-if test x$unsigned = x ; then
- AC_MSG_ERROR([cannot determine a size for unsigned $1])
-fi
-if test x$unsigned != x$signed ; then
- AC_MSG_ERROR(['signed $1' and 'unsigned $1' have different sizes ! ($signed != $unsigned)])
-fi
-
-AC_MSG_RESULT($GRAS_CHECK_SIZEOF_RES)
-])
-
-dnl
-dnl End of CHECK_SIGNED_SIZEOF
-dnl
-
-# GRAS_STRUCT_BOUNDARY(): Check the minimal alignment boundary of $1 in structures
-# ---------------------
-# (using integer, I hope no arch let it change with the content)
-AC_DEFUN([GRAS_STRUCT_BOUNDARY],
-[changequote(<<, >>)dnl
- dnl The cache variable name (and of the result).
- define(<<GRAS_STRUCT_BOUNDARY_RES>>, translit(ac_cv_struct_boundary_$1, [ *()], [_pLR]))dnl
- changequote([, ])dnl
- AC_MSG_CHECKING(for the minimal structure boundary of $1)
-
- AC_CACHE_VAL(GRAS_STRUCT_BOUNDARY_RES,
- [for ac_size in 1 2 4 8 16 32 64 ; do # List sizes in rough order of prevalence.
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include "confdefs.h"
- #include <sys/types.h>
- struct s { char c; $1 i; };
- ],[switch (0) case 0: case (sizeof (struct s) == $ac_size+sizeof($1)):;]), GRAS_STRUCT_BOUNDARY_RES=$ac_size)
- if test x$GRAS_STRUCT_BOUNDARY_RES != x ; then break; fi
- done
- ])
- AC_MSG_RESULT($GRAS_STRUCT_BOUNDARY_RES)
- if test x$GRAS_STRUCT_BOUNDARY_RES = x ; then
- AC_MSG_ERROR([Cannot determine the minimal alignment boundary of $1 in structures])
- fi
-])
-
-# GRAS_ARCH(): check the gras_architecture of this plateform
-# -----------
-# The different cases here must be syncronized with the array in src/base/DataDesc/ddt_convert.c
-#
-AC_DEFUN([GRAS_ARCH],
-[
-# Check for the architecture
-AC_C_BIGENDIAN(endian=1,endian=0,AC_MSG_ERROR([GRAS works only for little or big endian systems (yet)]))
-dnl Make sure we don't run on a non-two-complement arch, since we dunno convert them
-GRAS_TWO_COMPLEMENT(int)
-AC_DEFINE_UNQUOTED(GRAS_BIGENDIAN,$endian,[define if big endian])
-
-GRAS_SIGNED_SIZEOF(char) GRAS_STRUCT_BOUNDARY(char)
-GRAS_SIGNED_SIZEOF(short int) GRAS_STRUCT_BOUNDARY(short int)
-GRAS_SIGNED_SIZEOF(int) GRAS_STRUCT_BOUNDARY(int)
-GRAS_SIGNED_SIZEOF(long int) GRAS_STRUCT_BOUNDARY(long int)
-GRAS_SIGNED_SIZEOF(long long int) GRAS_STRUCT_BOUNDARY(long long int)
-
-GRAS_STRUCT_BOUNDARY(float) GRAS_STRUCT_BOUNDARY(double)
-
-GRAS_CHECK_SIZEOF(void *) GRAS_STRUCT_BOUNDARY(void *)
-GRAS_CHECK_SIZEOF(void (*) (void))
-
-
-AC_MSG_CHECKING(the GRAS signature of this architecture)
-if test x$endian = x1 ; then
- trace_endian=B
-else
- trace_endian=l
-fi
-gras_arch=unknown
-trace="$trace_endian"
-
-trace="${trace}_C:${ac_cv_sizeof_char}/${ac_cv_struct_boundary_char}:"
-
-trace="${trace}_I:${ac_cv_sizeof_short_int}/${ac_cv_struct_boundary_short_int}"
-trace="${trace}:${ac_cv_sizeof_int}/${ac_cv_struct_boundary_int}"
-trace="${trace}:${ac_cv_sizeof_long_int}/${ac_cv_struct_boundary_long_int}"
-trace="${trace}:${ac_cv_sizeof_long_long_int}/${ac_cv_struct_boundary_long_long_int}:"
-
-trace="${trace}_P:${ac_cv_sizeof_void_p}/${ac_cv_struct_boundary_void_p}"
-trace="${trace}:${ac_cv_sizeof_void_LpR_LvoidR}/${ac_cv_struct_boundary_void_p}:"
-
-trace="${trace}_D:4/${ac_cv_struct_boundary_float}:8/${ac_cv_struct_boundary_double}:"
-
-# sizeof float/double are not tested since IEEE 754 is assumed.
-# Check README.IEEE for rational.
-case $trace in
- l_C:1/1:_I:2/2:4/4:4/4:8/4:_P:4/4:4/4:_D:4/4:8/4:) gras_arch=0; gras_arch_name=little32;;
- l_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8:) gras_arch=1; gras_arch_name=little64;;
- B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/8:) gras_arch=2; gras_arch_name=big32;;
- B_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8:) gras_arch=3; gras_arch_name=big64;;
- B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/4:) gras_arch=4; gras_arch_name=aix;;
- B_C:1/1:_I:2/2:4/2:4/2:8/2:_P:4/2:4/2:_D:4/2:8/2:) gras_arch=5; gras_arch_name=arm;;
-esac
-if test x$gras_arch = xunknown ; then
- AC_MSG_RESULT([damnit ($trace)])
- AC_MSG_ERROR([Impossible to determine the GRAS architecture signature.
-Please report this architecture trace ($trace) and what it corresponds to.])
-fi
-echo "$as_me:$LINENO: GRAS trace of this machine: $trace" >&AS_MESSAGE_LOG_FD
-AC_DEFINE_UNQUOTED(GRAS_THISARCH,$gras_arch,[defines the GRAS architecture signature of this machine])
-AC_MSG_RESULT($gras_arch ($gras_arch_name))
-])
-# END OF GRAS ARCH CHECK
-
-AC_DEFUN([GRAS_CHECK_STRUCT_COMPACTION],
-[ AC_MSG_CHECKING(whether the struct gets packed)
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include "confdefs.h"
- #include <sys/types.h>
- #include <stddef.h> /* offsetof() */
- struct s {char c; double d;};
- ]],[[switch (0)
- case 0:
- case (sizeof(struct s) == sizeof(double)+sizeof(char)):;
- ]])],[gras_struct_packed=yes],[gras_struct_packed=no])
-
- AC_MSG_RESULT($gras_struct_packed)
- if test x$gras_struct_packed = "xyes" ; then
- AC_MSG_ERROR([GRAS does not support packed structures since it leads to nasty misalignments])
- fi
-
- AC_MSG_CHECKING(whether the struct gets compacted)
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include "confdefs.h"
- #include <sys/types.h>
- #include <stddef.h> /* offsetof() */
- struct s {double d; int i; char c;};
- ]],[[switch (0)
- case 0:
- case (offsetof(struct s,c) == sizeof(double)+sizeof(int)):;
- ]])],[gras_struct_compact=yes],[gras_struct_compact=no])
-
- AC_MSG_RESULT($gras_struct_compact)
-
- if test x$gras_struct_compact != xyes ; then
- AC_MSG_ERROR([GRAS works only on structure compacting architectures (yet)])
- fi
- AC_DEFINE_UNQUOTED(GRAS_STRUCT_COMPACT, 1,
- [Defined if structures are compacted when possible.
-
- Consider this structure: struct s {double d; int i; char c;};
-
- If it is allowed, the char is placed just after the int. If not,
- it has to be on the 8 bytes boundary imposed by the double.
-
- For now, GRAS requires the structures to be compacted.
- ])
- AC_MSG_CHECKING(whether arrays can straddle struct alignment boundaries)
-
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include "confdefs.h"
- #include <sys/types.h>
- #include <stddef.h> /* offsetof() */
- struct s { double d; int i; char c[6]; };
- ]],[[switch (0)
- case 0:
- case (offsetof(struct s,c) == sizeof(double)+sizeof(int)):;
- ]])],[gras_array_straddle_struct=yes],[gras_array_straddle_struct=no])
-
- AC_MSG_RESULT($gras_array_straddle_struct)
-
- if test x$gras_array_straddle_struct = xyes ; then
- AC_DEFINE_UNQUOTED(GRAS_ARRAY_STRADDLE_STRUCT, 1,
- [Defined if arrays in struct can straddle struct alignment boundaries.
-
- This is like than the structure compaction above, but this time,
- the argument to be compacted is an array whom each element would be
- normally compacted. Exemple:
-
- struct s { double d; int i; char c[6]; };
-
- Arrays can straddle if c is allowed to come just after i.
-
- Note that GRAS only support architecture presenting this
- caracteristic so far.
- ])
- else
- AC_MSG_ERROR([GRAS can only work on architectures allowing array fields to straddle alignment boundaries (yet)])
- fi
-])
-# END OF GRAS CHECK STRUCT COMPACTION
-
-AC_DEFUN([GRAS_C_COMPACT_STRUCT],
-[ AC_MSG_CHECKING(whether the struct gets compacted)
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include "confdefs.h"
- #include <sys/types.h>
- #include <stddef.h> /* offsetof() */
- struct s {double d; int a; int b;};
- ]],[[switch (0)
- case 0:
- case (offsetof(struct s,b) == sizeof(double)+sizeof(int)):;
- ]])],[gras_compact_struct=yes],[gras_compact_struct=no])
-
- AC_MSG_RESULT($gras_compact_struct)
-
- if test x$gras_compact_struct = xyes ; then
- AC_DEFINE_UNQUOTED(GRAS_COMPACT_STRUCT, 1,
- [Defined if structures are compacted when possible])
- fi
-])
-# END OF GRAS COMPACT STRUCT
-
