Mercurial > sdl-ios-xcode
comparison configure.in @ 5069:fd125217f00c
Separated out the minimum functionality that we need from gcc for our spinlock fallback.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 21 Jan 2011 21:42:04 -0800 |
| parents | 231dbbc3e31c |
| children | 55ff76cdbbb8 |
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| 5068:231dbbc3e31c | 5069:fd125217f00c |
|---|---|
| 309 ]) | 309 ]) |
| 310 AC_MSG_RESULT($have_gcc_atomics) | 310 AC_MSG_RESULT($have_gcc_atomics) |
| 311 | 311 |
| 312 if test x$have_gcc_atomics = xyes; then | 312 if test x$have_gcc_atomics = xyes; then |
| 313 AC_DEFINE(HAVE_GCC_ATOMICS) | 313 AC_DEFINE(HAVE_GCC_ATOMICS) |
| 314 fi | |
| 315 | |
| 316 # See if we have the minimum operation needed for GCC atomics | |
| 317 AC_TRY_LINK([ | |
| 318 ],[ | |
| 319 int a; | |
| 320 __sync_lock_test_and_set(&a, 1); | |
| 321 ],[ | |
| 322 have_gcc_sync_lock_test_and_set=yes | |
| 323 ]) | |
| 324 if test x$have_gcc_sync_lock_test_and_set = xyes; then | |
| 325 AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET) | |
| 314 fi | 326 fi |
| 315 fi | 327 fi |
| 316 | 328 |
| 317 # Standard C sources | 329 # Standard C sources |
| 318 SOURCES="$SOURCES $srcdir/src/*.c" | 330 SOURCES="$SOURCES $srcdir/src/*.c" |