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| author | Paul Eggert <eggert@cs.ucla.edu> | 2011-01-17 20:54:23 -0800 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2011-01-17 20:54:23 -0800 |
| commit | 7cae64b4eed192a49ea258089639ec44da6095e2 (patch) | |
| tree | b985de2a995674ad01ead7920526e80b9b4798b6 /configure | |
| parent | 9cc3a0c79c5a6af2691b2b566f8e3eb3654b806f (diff) | |
| download | emacs-7cae64b4eed192a49ea258089639ec44da6095e2.tar.gz emacs-7cae64b4eed192a49ea258089639ec44da6095e2.tar.bz2 emacs-7cae64b4eed192a49ea258089639ec44da6095e2.zip | |
Improve performance on non-GCC hosts with __aligned__.
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/configure b/configure index a15a9ea56a3..56701c27f5b 100755 --- a/configure +++ b/configure @@ -8278,6 +8278,37 @@ $as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h esac +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __attribute__ ((__aligned__ (expr)))" >&5 +$as_echo_n "checking for __attribute__ ((__aligned__ (expr)))... " >&6; } +if ${emacs_cv_attribute_aligned+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +char __attribute__ ((__aligned__ (1 << 3))) c; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + emacs_cv_attribute_aligned=yes +else + emacs_cv_attribute_aligned=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $emacs_cv_attribute_aligned" >&5 +$as_echo "$emacs_cv_attribute_aligned" >&6; } +if test $emacs_cv_attribute_aligned = yes; then + +$as_echo "#define HAVE_ATTRIBUTE_ALIGNED 1" >>confdefs.h + +fi + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5 $as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; } set x ${MAKE-make} @@ -18959,4 +18990,3 @@ if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} fi - |