Issue #477 - Clean up

Makefile

@@ -195,9 +195,15 @@ mstreams.o : mstreams.c $(HEADERS)
 					-DCYC_HAVE_FMEMOPEN=$(CYC_PLATFORM_HAS_FMEMOPEN) \
 					$< -o $@
 
+ifdef CYC_PTHREAD_SET_STACK_SIZE
+  DEF_PTHREAD_SET_STACK_SIZE=-DCYC_PTHREAD_SET_STACK_SIZE=$(CYC_PTHREAD_SET_STACK_SIZE) 
+else
+  DEF_PTHREAD_SET_STACK_SIZE=
+endif
+
 runtime.o : runtime.c $(HEADERS)
 	$(CCOMP) -c \
-					-DCYC_PTHREAD_SET_STACK_SIZE=$(CYC_PTHREAD_SET_STACK_SIZE) \
+					$(DEF_PTHREAD_SET_STACK_SIZE) \
 					-DCYC_INSTALL_DIR=\"$(PREFIX)\" \
 					-DCYC_INSTALL_LIB=\"$(LIBDIR)\" \
 					-DCYC_INSTALL_BIN=\"$(BINDIR)\" \

Makefile.config

@@ -16,7 +16,7 @@ CYC_GCC_OPT_FLAGS ?= -O2
 # Change this to 1 to use a custom stack size for threads.
 # Required on platforms such as Alpine Linux that use a 
 # very small stack by default.
-CYC_PTHREAD_SET_STACK_SIZE ?= 0
+CYC_PTHREAD_SET_STACK_SIZE ?=
 
 OS = $(shell uname)
 CC ?= cc

runtime.c

@@ -6826,7 +6826,7 @@ object Cyc_spawn_thread(object thread_and_thunk)
   pthread_t thread;
   pthread_attr_t attr;
   pthread_attr_init(&attr);
-#if CYC_PTHREAD_SET_STACK_SIZE
+#ifdef CYC_PTHREAD_SET_STACK_SIZE
   pthread_attr_setstacksize(&attr, 1024*1024*8);
 #endif
   pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);