Donot compile md.S when not use builtin setjmp.

Author: winlinvip

.gitignore

@@ -1,3 +1,4 @@
-DARWIN_15.6.0_DBG
+DARWIN_*_DBG
+LINUX_*_DBG
 obj
 st.pc

Makefile

@@ -139,8 +139,8 @@ CFLAGS      += -arch ppc
 LDFLAGS     += -arch ppc
 endif
 ifeq ($(INTEL), yes)
-CFLAGS      += -arch x86_64
-LDFLAGS     += -arch x86_64
+CFLAGS      += -arch i386 -arch x86_64
+LDFLAGS     += -arch i386 -arch x86_64
 endif
 LDFLAGS     += -dynamiclib -install_name /sw/lib/libst.$(MAJOR).$(DSO_SUFFIX) -compatibility_version $(MAJOR) -current_version $(VERSION)
 OTHER_FLAGS = -Wall

README.md

@@ -68,6 +68,8 @@ For OSX, user must specifies the valgrind header files:
 make darwin-debug EXTRA_CFLAGS="-DMD_HAVE_KQUEUE -DMD_VALGRIND -I/usr/local/include"
 ```
 
+> Remark: Latest OSX does not support ST, please use docker to run ST.
+
 ## Valgrind
 
 How to debug with gdb under valgrind, read [valgrind manual](http://valgrind.org/docs/manual/manual-core-adv.html#manual-core-adv.gdbserver-simple).

md.S

@@ -1,3 +1,5 @@
+#if defined(MD_USE_BUILTIN_SETJMP)
+
 /*
  * Portions created by SGI are Copyright (C) 2000 Silicon Graphics, Inc.
  * All Rights Reserved.
@@ -504,3 +506,4 @@
 
 #endif
 
+#endif

md.h

@@ -420,6 +420,7 @@
 
         #elif defined(__arm__)
             #define MD_STACK_GROWS_DOWN
+            /* https://github.com/ossrs/state-threads/issues/1#issuecomment-244648573 */
             #define MD_USE_BUILTIN_SETJMP
 
             /* force to use glibc solution, hack the guard jmpbuf from michaeltalyansky */