correctly fix build issues on Mac OSX Tiger by using a more generic means

for determining wheter poll and dlfcn functionality needs to be provided


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/v1-0@6707 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -214,7 +214,6 @@ OBJS=io.o sched.o logger.o frame.o loader.o config.o channel.o \
 	astmm.o enum.o srv.o dns.o aescrypt.o aestab.o aeskey.o \
 	utils.o 
 ifeq (${OSARCH},Darwin)
-OBJS+=poll.o dlfcn.o
 ASTLINK=-Wl,-dynamic
 SOLINK=-dynamic -bundle -undefined suppress -force_flat_namespace
 else
@@ -222,11 +221,19 @@ ASTLINK=-Wl,-E
 SOLINK=-shared -Xlinker -x
 endif
 
+ifeq ($(wildcard $(CROSS_COMPILE_TARGET)/usr/include/sys/poll.h),)
+  OBJS+= poll.o
+  CFLAGS+=-DPOLLCOMPAT
+endif
+
+ifeq ($(wildcard $(CROSS_COMPILE_TARGET)/usr/include/dlfcn.h),)
+  OBJS+= dhfcn.o
+  CFLAGS+=-DDLFCNCOMPAT
+endif
+
 CC=gcc
 INSTALL=install
 
-CFLAGS+=$(shell if uname -r|grep -q 8.2.0 ; then echo " -DOSX10_4 " ; fi)
-
 _all: all
 	@echo " +--------- Asterisk Build Complete ---------+"  
 	@echo " + Asterisk has successfully been built, but +"  

include/asterisk/channel.h

@@ -19,7 +19,7 @@
 #include <asterisk/chanvars.h>
 #include <unistd.h>
 #include <setjmp.h>
-#if !defined(OSX10_4) && defined(__APPLE__)
+#ifdef POLLCOMPAT
 #include <asterisk/poll-compat.h>
 #else
 #include <sys/poll.h>

include/asterisk/io.h

@@ -14,7 +14,7 @@
 #ifndef _IO_H
 #define _IO_H
 
-#if !defined(OSX10_4) && defined(__APPLE__)
+#ifdef POLLCOMPAT
 #include <asterisk/poll-compat.h>
 #else
 #include <sys/poll.h>		/* For POLL* constants */

loader.c

@@ -27,7 +27,7 @@
 #include <asterisk/enum.h>
 #include <asterisk/rtp.h>
 #include <asterisk/lock.h>
-#ifdef __APPLE__
+#ifdef DLFCNCOMPAT
 #include <asterisk/dlfcn-compat.h>
 #else
 #include <dlfcn.h>