merge from srs2 to check cpus.

@@ -43,29 +43,6 @@ echo "" >> $SRS_AUTO_HEADERS_H
 #####################################################################################
 # generate auto headers file, depends on the finished of options.sh
 #####################################################################################
-if [ $SRS_ARM_UBUNTU12 = YES ]; then
-    __SrsArmCC="arm-linux-gnueabi-gcc";
-    __SrsArmGCC="arm-linux-gnueabi-gcc";
-    __SrsArmCXX="arm-linux-gnueabi-g++";
-    __SrsArmAR="arm-linux-gnueabi-ar";
-    __SrsArmLD="arm-linux-gnueabi-ld";
-    __SrsArmRANDLIB="arm-linux-gnueabi-ranlib";
-fi
-if [ $SRS_MIPS_UBUNTU12 = YES ]; then
-    __SrsArmCC="mipsel-openwrt-linux-gcc";
-    __SrsArmGCC="mipsel-openwrt-linux-gcc";
-    __SrsArmCXX="mipsel-openwrt-linux-g++";
-    __SrsArmAR="mipsel-openwrt-linux-ar";
-    __SrsArmLD="mipsel-openwrt-linux-ld";
-    __SrsArmRANDLIB="mipsel-openwrt-linux-ranlib";
-fi
-# the arm-ubuntu12 options for make for depends
-if [[ -z $SrsArmCC ]]; then SrsArmCC=$__SrsArmCC; fi
-if [[ -z $SrsArmGCC ]]; then SrsArmGCC=$__SrsArmGCC; fi
-if [[ -z $SrsArmCXX ]]; then SrsArmCXX=$__SrsArmCXX; fi
-if [[ -z $SrsArmAR ]]; then SrsArmAR=$__SrsArmAR; fi
-if [[ -z $SrsArmLD ]]; then SrsArmLD=$__SrsArmLD; fi
-if [[ -z $SrsArmRANDLIB ]]; then SrsArmRANDLIB=$__SrsArmRANDLIB; fi
 # write to source file
 if [ $SRS_CROSS_BUILD = YES ]; then
     echo "cc=$SrsArmCC gcc=$SrsArmGCC g++=$SrsArmCXX ar=$SrsArmAR ld=$SrsArmLD randlib=$SrsArmRANDLIB"

@@ -38,9 +38,13 @@ function Ubuntu_prepare()
     else
         uname -v|grep Ubuntu >/dev/null 2>&1
         ret=$?; if [[ 0 -ne $ret ]]; then
+            # for debian, we think it's ubuntu also.
+            # for example, the wheezy/sid which is debian armv7 linux, can not identified by uname -v.
+            if [[ ! -f /etc/debian_version ]]; then
                 return 0;
             fi
         fi
+    fi
     
     # cross build for arm, install the cross build tool chain.
     if [ $SRS_ARM_UBUNTU12 = YES ]; then
@@ -378,7 +382,7 @@ fi
 #####################################################################################
 if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
     # check the cross build flag file, if flag changed, need to rebuild the st.
-    _ST_MAKE=linux-debug && _ST_EXTRA_CFLAGS="EXTRA_CFLAGS=-DMD_HAVE_EPOLL"
+    _ST_MAKE=linux-debug && _ST_EXTRA_CFLAGS="-DMD_HAVE_EPOLL"
     # for osx, use darwin for st, donot use epoll.
     if [ $OS_IS_OSX = YES ]; then
         _ST_MAKE=darwin-debug && _ST_EXTRA_CFLAGS="EXTRA_CFLAGS=-DMD_HAVE_KQUEUE"
@@ -399,7 +403,7 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
                 patch -p0 < ../../3rdparty/patches/1.st.arm.patch &&
                 patch -p0 < ../../3rdparty/patches/3.st.osx.kqueue.patch &&
                 patch -p0 < ../../3rdparty/patches/4.st.disable.examples.patch &&
-                make ${_ST_MAKE} CC=${SrsArmCC} AR=${SrsArmAR} LD=${SrsArmLD} RANDLIB=${SrsArmRANDLIB} ${_ST_EXTRA_CFLAGS} &&
+                make ${_ST_MAKE} CC=${SrsArmCC} AR=${SrsArmAR} LD=${SrsArmLD} RANDLIB=${SrsArmRANDLIB} EXTRA_CFLAGS="${_ST_EXTRA_CFLAGS}" &&
                 cd .. && rm -rf st && ln -sf st-1.9/obj st &&
                 cd .. && touch ${SRS_OBJS}/_flag.st.cross.build.tmp
             )
@@ -416,7 +420,7 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
                 patch -p0 < ../../3rdparty/patches/1.st.arm.patch &&
                 patch -p0 < ../../3rdparty/patches/3.st.osx.kqueue.patch &&
                 patch -p0 < ../../3rdparty/patches/4.st.disable.examples.patch &&
-                make ${_ST_MAKE} ${_ST_EXTRA_CFLAGS} &&
+                make ${_ST_MAKE} EXTRA_CFLAGS="${_ST_EXTRA_CFLAGS}" &&
                 cd .. && rm -rf st && ln -sf st-1.9/obj st &&
                 cd .. && rm -f ${SRS_OBJS}/_flag.st.cross.build.tmp
             )

+#!/bin/bash
+
+# when options parsed, setup some variables, then build the depends.
+
+# when arm specified, setup the cross build variables.
+if [ $SRS_ARM_UBUNTU12 = YES ]; then
+    __SrsArmCC="arm-linux-gnueabi-gcc";
+    __SrsArmGCC="arm-linux-gnueabi-gcc";
+    __SrsArmCXX="arm-linux-gnueabi-g++";
+    __SrsArmAR="arm-linux-gnueabi-ar";
+    __SrsArmLD="arm-linux-gnueabi-ld";
+    __SrsArmRANDLIB="arm-linux-gnueabi-ranlib";
+fi
+
+if [ $SRS_MIPS_UBUNTU12 = YES ]; then
+    __SrsArmCC="mipsel-openwrt-linux-gcc";
+    __SrsArmGCC="mipsel-openwrt-linux-gcc";
+    __SrsArmCXX="mipsel-openwrt-linux-g++";
+    __SrsArmAR="mipsel-openwrt-linux-ar";
+    __SrsArmLD="mipsel-openwrt-linux-ld";
+    __SrsArmRANDLIB="mipsel-openwrt-linux-ranlib";
+fi
+
+# the arm-ubuntu12 options for make for depends
+if [[ -z $SrsArmCC ]]; then SrsArmCC=$__SrsArmCC; fi
+if [[ -z $SrsArmGCC ]]; then SrsArmGCC=$__SrsArmGCC; fi
+if [[ -z $SrsArmCXX ]]; then SrsArmCXX=$__SrsArmCXX; fi
+if [[ -z $SrsArmAR ]]; then SrsArmAR=$__SrsArmAR; fi
+if [[ -z $SrsArmLD ]]; then SrsArmLD=$__SrsArmLD; fi
+if [[ -z $SrsArmRANDLIB ]]; then SrsArmRANDLIB=$__SrsArmRANDLIB; fi

@@ -23,6 +23,9 @@ BLACK="\\033[0m"
 # parse options, exit with error when parse options invalid.
 . auto/options.sh
 
+# setup variables when options parsed.
+. auto/setup_variables.sh
+
 # clean the exists, when not export srs-librtmp.
 # do this only when the options is ok.
 if [[ -f Makefile ]]; then

@@ -103,6 +103,7 @@
 		3C689FA01AB6AAC800C9CEEE /* stk.c in Sources */ = {isa = PBXBuildFile; fileRef = 3C689F9C1AB6AAC800C9CEEE /* stk.c */; };
 		3C689FA11AB6AAC800C9CEEE /* sync.c in Sources */ = {isa = PBXBuildFile; fileRef = 3C689F9D1AB6AAC800C9CEEE /* sync.c */; };
 		3C82802C1BAFF8CC004A1794 /* srs_kafka_stack.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3C82802A1BAFF8CC004A1794 /* srs_kafka_stack.cpp */; };
+		3CB25C2A1BB269FD00C97A63 /* jmp_sp.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3CB25C291BB269FD00C97A63 /* jmp_sp.cpp */; };
 		3CC52DD81ACE4023006FEB01 /* srs_utest_amf0.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3CC52DCA1ACE4023006FEB01 /* srs_utest_amf0.cpp */; };
 		3CC52DD91ACE4023006FEB01 /* srs_utest_config.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3CC52DCC1ACE4023006FEB01 /* srs_utest_config.cpp */; };
 		3CC52DDA1ACE4023006FEB01 /* srs_utest_core.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3CC52DCE1ACE4023006FEB01 /* srs_utest_core.cpp */; };
@@ -372,6 +373,8 @@
 		3C8280291BAFF896004A1794 /* transform.edge.conf */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = transform.edge.conf; path = ../../../conf/transform.edge.conf; sourceTree = "<group>"; };
 		3C82802A1BAFF8CC004A1794 /* srs_kafka_stack.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = srs_kafka_stack.cpp; path = ../../../src/protocol/srs_kafka_stack.cpp; sourceTree = "<group>"; };
 		3C82802B1BAFF8CC004A1794 /* srs_kafka_stack.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = srs_kafka_stack.hpp; path = ../../../src/protocol/srs_kafka_stack.hpp; sourceTree = "<group>"; };
+		3CB25C281BB2596300C97A63 /* setup_variables.sh */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.script.sh; name = setup_variables.sh; path = ../../../auto/setup_variables.sh; sourceTree = "<group>"; };
+		3CB25C291BB269FD00C97A63 /* jmp_sp.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = jmp_sp.cpp; path = ../../../research/arm/jmp_sp.cpp; sourceTree = "<group>"; };
 		3CC52DCA1ACE4023006FEB01 /* srs_utest_amf0.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = srs_utest_amf0.cpp; path = ../../src/utest/srs_utest_amf0.cpp; sourceTree = "<group>"; };
 		3CC52DCB1ACE4023006FEB01 /* srs_utest_amf0.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = srs_utest_amf0.hpp; path = ../../src/utest/srs_utest_amf0.hpp; sourceTree = "<group>"; };
 		3CC52DCC1ACE4023006FEB01 /* srs_utest_config.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = srs_utest_config.cpp; path = ../../src/utest/srs_utest_config.cpp; sourceTree = "<group>"; };
@@ -661,6 +664,7 @@
 				3C1232C31AAE827E00CE8F6C /* local_ip.sh */,
 				3C1232C41AAE827E00CE8F6C /* modules.sh */,
 				3C1232C51AAE827E00CE8F6C /* options.sh */,
+				3CB25C281BB2596300C97A63 /* setup_variables.sh */,
 				3C1232C61AAE827E00CE8F6C /* summary.sh */,
 				3C1232C71AAE827E00CE8F6C /* utest.sh */,
 			);
@@ -772,6 +776,7 @@
 		3C663F001AB014B500286D8B /* research */ = {
 			isa = PBXGroup;
 			children = (
+				3CB25C291BB269FD00C97A63 /* jmp_sp.cpp */,
 				3C663F021AB0155100286D8B /* srs_aac_raw_publish.c */,
 				3C663F031AB0155100286D8B /* srs_audio_raw_publish.c */,
 				3C663F041AB0155100286D8B /* srs_bandwidth_check.c */,
@@ -964,6 +969,8 @@
 				3C1232241AAE814D00CE8F6C /* srs_kernel_error.cpp in Sources */,
 				3C036B561B2D0AC10078E2E0 /* srs_app_http_stream.cpp in Sources */,
 				3C068D6D1B10175500AA722C /* srs_protocol_stream.cpp in Sources */,
+				3CB25C2A1BB269FD00C97A63 /* jmp_sp.cpp in Sources */,
+				3C068D6D1B10175500AA722C /* srs_protocol_buffer.cpp in Sources */,
 				3C1232441AAE81A400CE8F6C /* srs_rtmp_handshake.cpp in Sources */,
 				3C1232291AAE814D00CE8F6C /* srs_kernel_buffer.cpp in Sources */,
 				3C663F181AB0155100286D8B /* srs_play.c in Sources */,

@@ -11,22 +11,7 @@
 
 jmp_buf context;
 
-void func1()
-{
-#if defined(__amd64__) || defined(__x86_64__)
-    register long int rsp0 asm("rsp");
-    
-    int ret = setjmp(context);
-    printf("setjmp func1 ret=%d, rsp=%#lx\n", ret, rsp0);
-    // enter by longjmp
-    if (ret != 0) {
-        printf("call by longjmp.\n");
-        exit(0);
-    }
-#endif
-}
-
-void func0()
+void do_longjmp()
 {
     /**
     the definition of jmp_buf:
@@ -78,8 +63,6 @@ void func0()
         printf("env[%d]=%#x, ", i, (int)context[0].__jmpbuf[i]);
     }
     printf("\n");
-    
-    func1();
 #endif
 
 #if defined(__arm__)
@@ -105,7 +88,7 @@ void func0()
     */
     /**
     For example, on raspberry-pi, armv6 cpu:
-        (gdb) x /64 context[0].__jmpbuf
+        (gdb) x /64xb (char*)context[0].__jmpbuf
             v1, 0:  0x00	0x00	0x00	0x00	
             v2, 1:  0x00	0x00	0x00	0x00
             v3, 2:  0x2c	0x84	0x00	0x00	
@@ -147,8 +130,7 @@ int main(int argc, char** argv)
         (int)__GLIBC__, (int)__GLIBC_MINOR__);
 #endif
 
-    func0();
-    longjmp(context, 1);
+    do_longjmp();
     
     printf("terminated\n");
 

@@ -119,5 +119,17 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
         className(const className&); \
         className& operator= (const className&)
 
+/**
+ * important check for st(state-threads),
+ * only support the following cpus:
+ *      1. i386/amd64/x86_64
+ *      2. arm, glibc <= 2.15
+ */
+#if !defined(__amd64__) && !defined(__x86_64__) && !defined(__i386__) && !defined(__arm__)
+    #error "only support i386/amd64/x86_64/arm cpu"
+#endif
+#if defined(__arm__) && __GLIBC__ != 2 || __GLIBC_MINOR__ > 15
+    #error "for arm, only support glibc <= 2.15"
 #endif
 
+#endif