Fix build under haiku

source/tests.old/Makefile

@@ -21,7 +21,7 @@ BASE_FLAGS += -I. -I../backend -I../includes -I../modules -I../utils
 BASE_FLAGS += -Wcast-align -Wmissing-declarations
 # BASE_FLAGS += -Wcast-qual -Wconversion -Wsign-conversion -Wundef
 BASE_FLAGS += -Wformat -Wformat-security -Wredundant-decls -Wshadow -Wstrict-overflow -fstrict-overflow -Wwrite-strings
-BASE_FLAGS += -Wpointer-arith -Wabi -Winit-self -Wuninitialized -Wunused-parameter
+BASE_FLAGS += -Wpointer-arith -Wabi=2 -Winit-self -Wuninitialized -Wunused-parameter
 # -Wfloat-equal
 
 LINK_FLAGS =

source/utils/CarlaProcessUtils.hpp

@@ -20,15 +20,19 @@
 
 #include "CarlaUtils.hpp"
 
+#ifdef CARLA_OS_LINUX
+# include <sys/prctl.h>
+#endif
+
+#ifdef CARLA_OS_HAIKU
+typedef __sighandler_t sig_t;
+#endif
+
 #ifndef CARLA_OS_WIN
 # include <csignal>
 # include <csetjmp>
 #endif
 
-#ifdef CARLA_OS_LINUX
-# include <sys/prctl.h>
-#endif
-
 // --------------------------------------------------------------------------------------------------------------------
 // process functions
 

source/utils/CarlaScopeUtils.hpp

@@ -25,7 +25,7 @@
 #include <algorithm>
 #include <clocale>
 
-#if defined(CARLA_PROPER_CPP11_SUPPORT) && ! defined(CARLA_OS_WIN)
+#if defined(CARLA_PROPER_CPP11_SUPPORT) && ! defined(CARLA_OS_WIN) && ! defined(CARLA_OS_HAIKU)
 # define CARLA_USE_NEWLOCALE
 #endif