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Description: fix FTBFS on mips, mipsel and powerpc
mips, mipsel and powerpc do not implement 64-bit atomics
natively. The fix is to use libatomic (part of GCC) which provides
helper routines for these missing atomics, implemented using locks.
Author: James Cowgill <jcowgill@debian.org>
Index: erlang-p1-cache-tab/c_src/ets_cache.c
===================================================================
--- erlang-p1-cache-tab.orig/c_src/ets_cache.c
+++ erlang-p1-cache-tab/c_src/ets_cache.c
@@ -137,7 +137,7 @@ static ERL_NIF_TERM incr_counter(ErlNifE
if (enif_get_uint(env, argv[0], &counter))
if (counter < state->max_counters) {
if (state->counters[counter] != MAX_UINT64)
- return enif_make_uint64(env, __sync_add_and_fetch(state->counters + counter, 1));
+ return enif_make_uint64(env, __atomic_add_fetch(state->counters + counter, 1, __ATOMIC_SEQ_CST));
}
return enif_make_badarg(env);
Index: erlang-p1-cache-tab/rebar.config
===================================================================
--- erlang-p1-cache-tab.orig/rebar.config
+++ erlang-p1-cache-tab/rebar.config
@@ -27,7 +27,8 @@
{port_specs, [{"priv/lib/ets_cache.so", ["c_src/ets_cache.c"]}]}.
{port_env, [{"ERL_LDFLAGS", " -L$ERL_EI_LIBDIR -lei"},
- {"CFLAGS", "$CFLAGS -g -O2 -Wall"}]}.
+ {"CFLAGS", "$CFLAGS -g -O2 -Wall"},
+ {"LDFLAGS", "$LDFLAGS -latomic"}]}.
{cover_enabled, true}.
{cover_export_enabled, true}.
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