diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/configure b/configure index f10dee827f6..0062ee263a4 100755 --- a/configure +++ b/configure @@ -14275,7 +14275,10 @@ _ACEOF # Compute maximum alignment of any basic type. # We assume long's alignment is at least as strong as char, short, or int; -# but we must check long long (if it exists) and double. +# but we must check long long (if it is being used for int64) and double. +# Note that we intentionally do not consider any types wider than 64 bits, +# as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty +# for disk and memory space. MAX_ALIGNOF=$ac_cv_alignof_long if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then @@ -14335,7 +14338,7 @@ _ACEOF fi -# Check for extensions offering the integer scalar type __int128. +# Some compilers offer a 128-bit integer scalar type. { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __int128" >&5 $as_echo_n "checking for __int128... " >&6; } if ${pgac_cv__128bit_int+:} false; then : @@ -14385,6 +14388,41 @@ if test x"$pgac_cv__128bit_int" = xyes ; then $as_echo "#define PG_INT128_TYPE __int128" >>confdefs.h + # The cast to long int works around a bug in the HP C Compiler, +# see AC_CHECK_SIZEOF for more information. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking alignment of PG_INT128_TYPE" >&5 +$as_echo_n "checking alignment of PG_INT128_TYPE... " >&6; } +if ${ac_cv_alignof_PG_INT128_TYPE+:} false; then : + $as_echo_n "(cached) " >&6 +else + if ac_fn_c_compute_int "$LINENO" "(long int) offsetof (ac__type_alignof_, y)" "ac_cv_alignof_PG_INT128_TYPE" "$ac_includes_default +#ifndef offsetof +# define offsetof(type, member) ((char *) &((type *) 0)->member - (char *) 0) +#endif +typedef struct { char x; PG_INT128_TYPE y; } ac__type_alignof_;"; then : + +else + if test "$ac_cv_type_PG_INT128_TYPE" = yes; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "cannot compute alignment of PG_INT128_TYPE +See \`config.log' for more details" "$LINENO" 5; } + else + ac_cv_alignof_PG_INT128_TYPE=0 + fi +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_PG_INT128_TYPE" >&5 +$as_echo "$ac_cv_alignof_PG_INT128_TYPE" >&6; } + + + +cat >>confdefs.h <<_ACEOF +#define ALIGNOF_PG_INT128_TYPE $ac_cv_alignof_PG_INT128_TYPE +_ACEOF + + fi # Check for various atomic operations now that we have checked how to declare |