diff options
| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-02-24 03:38:14 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-02-24 03:38:14 +0000 |
| commit | b2f3063cae5cd5997a89717d91fdec06c5041620 (patch) | |
| tree | 659206e5c7382f73ca808444e4c5d03ef11f6b43 /configure.in | |
| parent | ba5ed845b30c81fbf92c052b83f54198cd272bbd (diff) | |
time: rearrange+pack vtm and time_object structs
struct time_object shrinks from 88 to 46 bytes on my 64-bit system.
* configure.in: use -Wno-packed-bitfield-compat for GCC 4.4+
use __attribute__((packed)) if available
* timev.h: shrink and pack struct vtm
* time.c: pack struct time_object and adjust/introduce helpers
[ruby-core:60794]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.in b/configure.in index ae93ea9642..8d7bfba55e 100644 --- a/configure.in +++ b/configure.in @@ -746,6 +746,7 @@ if test "$GCC:${warnflags+set}:no" = yes::no; then -Werror=implicit-function-declaration \ -Werror=division-by-zero \ -Werror=deprecated-declarations \ + -Wno-packed-bitfield-compat \ $extra_warning \ ; do if test "$particular_werror_flags" != yes; then @@ -1271,6 +1272,15 @@ RUBY_CHECK_SIZEOF(double) RUBY_CHECK_SIZEOF(time_t, [long "long long"], [], [@%:@include <time.h>]) RUBY_CHECK_SIZEOF(clock_t, [], [], [@%:@include <time.h>]) +AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct, + [AC_TRY_COMPILE([struct { int a; } __attribute__((packed));], [], + [rb_cv_packed_struct=yes], [rb_cv_packed_struct=no])]) +if test "$rb_cv_packed_struct" = yes; then + AC_DEFINE_UNQUOTED(PACKED_STRUCT, __attribute__((packed))) +else + AC_DEFINE_UNQUOTED(PACKED_STRUCT,) +fi + AC_DEFUN([RUBY_CHECK_PRINTF_PREFIX], [ AC_CACHE_CHECK([for printf prefix for $1], [rb_cv_pri_prefix_]AS_TR_SH($1),[ [rb_cv_pri_prefix_]AS_TR_SH($1)=[NONE] |