diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index cbdf52afb..34ea602cb 100644 --- a/configure.ac +++ b/configure.ac @@ -723,6 +723,14 @@ AC_FUNC_UTIME_NULL AC_FUNC_VPRINTF AC_CHECK_FUNCS([atexit bzero dup2 endpwent floor ftruncate getcwd gethostbyname gethostname gettimeofday inet_ntoa isascii localtime_r memchr memmove memset mkdir munmap pow putenv re_comp regcomp rint select setenv socket sqrt strcasecmp strchr strcspn strdup strerror strncasecmp strndup strnlen strrchr strsep strspn strstr strtol unsetenv utime strtoq strcasestr asprintf vasprintf]) +echo -n "checking for compiler atomic operations... " +AC_COMPILE_IFELSE( +AC_LANG_PROGRAM([], [int foo1; int foo2 = __sync_fetch_and_add(&foo1, 1);]), +AC_MSG_RESULT(yes) +AC_DEFINE([HAVE_GCC_ATOMICS], 1, [Define to 1 if your GCC C compiler provides atomic operations.]), +AC_MSG_RESULT(no) +) + AC_CONFIG_FILES([build_tools/menuselect-deps makeopts]) AC_OUTPUT |