| configure.ac: cross-compilation fix |
| |
| This patch enables to configure the package when cross-compiling in a way |
| recommended by Autoconf manual (see manual for version 2.69, Section 6.6 |
| Checking Runtime Behavior). |
| |
| Signed-off-by: Alexander Lukichev <alexander.lukichev@gmail.com> |
| |
| --- a/openpgm/pgm/configure.ac 2011-09-27 20:59:08.000000000 +0300 |
| +++ b/openpgm/pgm/configure.ac 2013-02-12 10:33:53.000000000 +0200 |
| @@ -272,14 +272,19 @@ uint32_t add32_with_carry (uint32_t a, u |
| ;; |
| esac |
| # ticket spinlock friendly: unaligned pointers & atomic ops (excl. Sun Pro) |
| -AC_MSG_CHECKING([for unaligned pointers]) |
| -AC_RUN_IFELSE( |
| - [AC_LANG_PROGRAM([[char* nezumi = "mouse";]], |
| - [[short x = *(short*)(nezumi + 2)]])], |
| - [AC_MSG_RESULT([yes]) |
| - pgm_unaligned_pointers=yes], |
| - [AC_MSG_RESULT([no]) |
| - pgm_unaligned_pointers=no]) |
| +AC_CACHE_CHECK([if unaligned access fails], [ac_cv_lbl_unaligned_fail], |
| + [AC_RUN_IFELSE( |
| + [AC_LANG_PROGRAM([[char* nezumi = "mouse";]], |
| + [[short x = *(short*)(nezumi + 2)]])], |
| + [ac_cv_lbl_unaligned_fail=no], |
| + [ac_cv_lbl_unaligned_fail=yes], |
| + [ac_cv_lbl_unaligned_fail=yes]) |
| + ]) |
| +if test "$ac_cv_lbl_unaligned_fail" = yes; then |
| + pgm_unaligned_pointers=no |
| +else |
| + pgm_unaligned_pointers=yes |
| +fi |
| AC_MSG_CHECKING([for intrinsic atomic ops]) |
| # AC_PREPROC_IFELSE not always portable |
| AC_COMPILE_IFELSE( |
