diff --git a/Misc/NEWS.d/next/Build/2019-10-11-15-32-58.bpo-37415.D9RXrq.rst b/Misc/NEWS.d/next/Build/2019-10-11-15-32-58.bpo-37415.D9RXrq.rst new file mode 100644 index 00000000000..98f4a3bf4f5 --- /dev/null +++ b/Misc/NEWS.d/next/Build/2019-10-11-15-32-58.bpo-37415.D9RXrq.rst @@ -0,0 +1,2 @@ +Fix stdatomic.h header check for ICC compiler: the ICC implementation lacks +atomic_uintptr_t type which is needed by Python. diff --git a/configure b/configure index 0f466db4aa0..b769d596296 100755 --- a/configure +++ b/configure @@ -16849,9 +16849,12 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext #include - atomic_int value = ATOMIC_VAR_INIT(1); + atomic_int int_var; + atomic_uintptr_t uintptr_var; int main() { - int loaded_value = atomic_load(&value); + atomic_store_explicit(&int_var, 5, memory_order_relaxed); + atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); + int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); return 0; } diff --git a/configure.ac b/configure.ac index 1ef0df70e68..49acff31363 100644 --- a/configure.ac +++ b/configure.ac @@ -5492,9 +5492,12 @@ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include - atomic_int value = ATOMIC_VAR_INIT(1); + atomic_int int_var; + atomic_uintptr_t uintptr_var; int main() { - int loaded_value = atomic_load(&value); + atomic_store_explicit(&int_var, 5, memory_order_relaxed); + atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); + int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); return 0; } ]]) @@ -5504,7 +5507,7 @@ AC_MSG_RESULT($have_stdatomic_h) if test "$have_stdatomic_h" = yes; then AC_DEFINE(HAVE_STD_ATOMIC, 1, - [Has stdatomic.h with atomic_int]) + [Has stdatomic.h with atomic_int and atomic_uintptr_t]) fi # Check for GCC >= 4.7 __atomic builtins diff --git a/pyconfig.h.in b/pyconfig.h.in index d36fc933f48..f4816fdcdfc 100644 --- a/pyconfig.h.in +++ b/pyconfig.h.in @@ -963,7 +963,7 @@ /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H -/* Has stdatomic.h with atomic_int */ +/* Has stdatomic.h with atomic_int and atomic_uintptr_t */ #undef HAVE_STD_ATOMIC /* Define to 1 if you have the `strdup' function. */