Fix. AC_CHECK_DECLS always defines HAVE_DECL_*.

stepmania/src/archutils/Darwin/arch_setup.h

@@ -22,7 +22,9 @@ typedef unsigned long long UInt64;
 #define HAVE_FFMPEG
 #define HAVE_SDL
 #define HAVE_PTHREAD_COND_TIMEDWAIT
-#define HAVE_DECL_SIGUSR1
+/* This must be defined to 1 because autoconf's AC_CHECK_DECLS macro decides to define
+ * this in all cases. If only they could be consistent... */
+#define HAVE_DECL_SIGUSR1 1
 
 /* We have <machine/endian.h> which gets pulled in when we use gcc 4.0's <cstdlib>
  * but no <endian.h>. The definitions of LITTLE_ENDIAN, BIG_ENDIAN and end up conflicting

stepmania/src/archutils/Unix/CrashHandler.cpp

@@ -238,10 +238,10 @@ const char *SignalName( int signo )
 	X(SIGQUIT)
 	case SIGSEGV: return "Segmentation fault";
 	X(SIGTRAP) X(SIGTERM) X(SIGVTALRM) X(SIGXCPU) X(SIGXFSZ)
-#if defined(HAVE_DECL_SIGPWR)
+#if defined(HAVE_DECL_SIGPWR) && HAVE_DECL_SIGPWR
 	X(SIGPWR)
 #endif
-#if defined(HAVE_DECL_SIGUSR1)
+#if defined(HAVE_DECL_SIGUSR1) && HAVE_DECL_SIGUSR1
 	case SIGUSR1: return "Forced crash";
 #endif
 	default:

stepmania/src/archutils/Unix/SignalHandler.cpp

@@ -33,10 +33,10 @@ static int signals[] =
 {
 	SIGALRM, SIGBUS, SIGFPE, SIGHUP, SIGILL, SIGINT, SIGABRT,
 	SIGQUIT, SIGSEGV, SIGTRAP, SIGTERM, SIGVTALRM, SIGXCPU, SIGXFSZ,
-#if defined(HAVE_DECL_SIGPWR)
+#if defined(HAVE_DECL_SIGPWR) && HAVE_DECL_SIGPWR
 	SIGPWR,
 #endif
-#if defined(HAVE_DECL_SIGUSR1)
+#if defined(HAVE_DECL_SIGUSR1) && HAVE_DECL_SIGUSR1
 	SIGUSR1,
 #endif
 	-1