diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 59489047fc..11fc7e545d 100644 --- a/configure.ac +++ b/configure.ac @@ -1660,6 +1660,26 @@ yes) CFLAGS_NODIST="$CFLAGS_NODIST -Wno-missing-field-initializers" fi + AC_MSG_CHECKING(if we can turn off $CC invalid function cast warning) + ac_save_cc="$CC" + CC="$CC -Wcast-function-type -Werror" + AC_CACHE_VAL(ac_cv_disable_cast_function_type, + AC_COMPILE_IFELSE( + [ + AC_LANG_PROGRAM([[]], [[]]) + ],[ + ac_cv_disable_cast_function_type=yes + ],[ + ac_cv_disable_cast_function_type=no + ])) + CC="$ac_save_cc" + AC_MSG_RESULT($ac_cv_disable_cast_function_type) + + if test $ac_cv_disable_cast_function_type = yes + then + CFLAGS_NODIST="$CFLAGS_NODIST -Wno-cast-function-type" + fi + AC_MSG_CHECKING(if we can turn on $CC mixed sign comparison warning) ac_save_cc="$CC" CC="$CC -Wsign-compare" |