HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
1 | dnl |
| 2 | dnl Test for _Pragma and how we need to use it | |
| 3 | dnl | |
| 4 | AC_DEFUN([OPENAFS_C_PRAGMA_TAUTOLOGICAL_POINTER_COMPARE],[ | |
| 5 | AC_MSG_CHECKING(for _Pragma recognition of -Wtautological-pointer-compare) | |
| 6 | AC_CACHE_VAL(ac_cv__Pragma_tautological_pointer_compare, [ | |
| 7 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
| 8 | _Pragma("clang diagnostic error \"-Wunknown-pragmas\"") | |
| 9 | _Pragma("clang diagnostic ignored \"-Wtautological-pointer-compare\"") | |
| 10 | ||
| 11 | void func(void) | |
| 12 | { | |
| 13 | return; | |
| 14 | } | |
| 15 | ]])], | |
| 16 | [ac_cv__Pragma_tautological_pointer_compare=yes], | |
| 17 | [ac_cv__Pragma_tautological_pointer_compare=no])]) | |
| 18 | AC_MSG_RESULT($ac_cv__Pragma_tautological_pointer_compare) | |
| 19 | ]) | |
| 20 | ||
| 21 | AC_DEFUN([_OPENAFS_C_PRAGMA], [ | |
| 22 | AC_MSG_CHECKING(for _Pragma) | |
| 23 | AC_CACHE_VAL(ac_cv__Pragma, [ | |
| 24 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
| 25 | _Pragma("") | |
| 26 | ||
| 27 | void func(void) | |
| 28 | { | |
| 29 | return; | |
| 30 | } | |
| 31 | ]])], | |
| 32 | [ac_cv__Pragma=yes], | |
| 33 | [ac_cv__Pragma=no])]) | |
| 34 | AC_MSG_RESULT($ac_cv__Pragma)]) | |
| 35 | ||
| 36 | AC_DEFUN([OPENAFS_C_PRAGMA], [ | |
| 37 | _OPENAFS_C_PRAGMA | |
| 38 | if test "$ac_cv__Pragma" = "yes"; then | |
| 39 | AC_DEFINE(HAVE__PRAGMA, 1, [define if your compiler has _Pragma]) | |
| 40 | OPENAFS_C_PRAGMA_TAUTOLOGICAL_POINTER_COMPARE | |
| 41 | if test "$ac_cv__Pragma_tautological_pointer_compare" = "yes"; then | |
| 42 | AC_DEFINE(HAVE__PRAGMA_TAUTOLOGICAL_POINTER_COMPARE, 1, | |
| 43 | [define if your compiler has _Pragma and recognizes -Wtautological-pointer-compare]) | |
| 44 | fi | |
| 45 | fi | |
| 46 | ]) |