From 0642847e85a0517c4063e23f21dcd18052e8d94c Mon Sep 17 00:00:00 2001 From: Lukas Larsson <lukas@erlang-solutions.com> Date: Mon, 29 Jul 2013 15:08:18 +0200 Subject: Bailout if no native implementations are found Some basic tests are already done in configure. This makes sure we cover all cases by bailing out when compiling as well. --- erts/configure.in | 5 ++++- erts/include/internal/ethread.h | 4 ++++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'erts') diff --git a/erts/configure.in b/erts/configure.in index 2f624e5853..64436e933c 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -1051,12 +1051,15 @@ if test $ERTS_BUILD_SMP_EMU = yes; then AC_DEFINE(ERTS_HAVE_SMP_EMU, 1, [Define if the smp emulator is built]) + test "X$smp_require_native_atomics" = "Xyes" && + AC_DEFINE(ETHR_SMP_REQUIRE_NATIVE_IMPLS, 1, [Define if you want to enable check for native ethread implementations]) + case "$ethr_have_native_atomics-$smp_require_native_atomics-$ethr_have_native_spinlock" in yes-*) ;; no-yes-*) - AC_MSG_ERROR([No native atomic implementation found. See INSTALL.md for more information.]) + AC_MSG_ERROR([No native atomic implementation found. See Configuring section in INSTALL.md for more information.]) ;; no-no-yes) diff --git a/erts/include/internal/ethread.h b/erts/include/internal/ethread.h index 407097d4b1..38b8e9e9b6 100644 --- a/erts/include/internal/ethread.h +++ b/erts/include/internal/ethread.h @@ -361,6 +361,10 @@ extern ethr_runtime_t ethr_runtime__; # endif #endif /* !ETHR_DISABLE_NATIVE_IMPLS */ +#if !defined(ETHR_HAVE_NATIVE_ATOMIC32) && !defined(ETHR_HAVE_NATIVE_ATOMIC64) && !defined(ETHR_DISABLE_NATIVE_IMPLS) && defined(ETHR_SMP_REQUIRE_NATIVE_IMPLS) +#error "No native ethread implementation found. If you want to use fallbacks you have to disable native ethread support with configure." +#endif + #include "ethr_atomics.h" /* The atomics API */ #if defined(__GNUC__) -- cgit v1.2.3