Got rid of the LINUX1_2 and LINUX2_0 macros. I hope that this will

make building on 2.1.x easier.  In case we need to distinguish between
different versions of Linux, we will try to use feature-based macros
as opposed to version-based macros.
Files changed: Linux.mk, _linux.h, _pth.h, prnetdb.c, and ptthread.c.

nsprpub/config/Linux.mk

@@ -59,18 +59,15 @@ OS_CFLAGS		= $(DSO_CFLAGS) $(PLATFORM_FLAGS) $(PORT_FLAGS)
 ######################################################################
 
 ifeq ($(CPU_ARCH),alpha)
-PLATFORM_FLAGS		+= -DLINUX1_2 -D_ALPHA_ -D__alpha
+PLATFORM_FLAGS		+= -D_ALPHA_ -D__alpha
 PORT_FLAGS		+= -D_XOPEN_SOURCE
 endif
 ifeq ($(CPU_ARCH),ppc)
-PLATFORM_FLAGS		+= -DMKLINUX -DLINUX1_2
+PLATFORM_FLAGS		+= -DMKLINUX
 OS_INCLUDES		+= -I/usr/local/include
 endif
-ifeq ($(CPU_ARCH),sparc)
-PLATFORM_FLAGS		+= -DLINUX1_2
-endif
 ifeq ($(CPU_ARCH),x86)
-PLATFORM_FLAGS		+= -mno-486 -DLINUX1_2 -Di386
+PLATFORM_FLAGS		+= -mno-486 -Di386
 PORT_FLAGS		+= -D_XOPEN_SOURCE
 endif
 ifeq ($(CPU_ARCH),m68k)
@@ -82,12 +79,7 @@ ifeq ($(CPU_ARCH),m68k)
 ifndef BUILD_OPT
 OPTIMIZER		+= -O
 endif
-PLATFORM_FLAGS		+= -m68020-40 -DLINUX1_2
-endif
-
-# These are CPU_ARCH independent
-ifeq ($(basename $(OS_RELEASE)),2.0)
-PLATFORM_FLAGS		+= -DLINUX2_0
+PLATFORM_FLAGS		+= -m68020-40
 endif
 
 #

nsprpub/pr/include/md/_linux.h

@@ -48,13 +48,8 @@
 /*
  * Elf linux supports dl* functions
  */
-#if defined(LINUX1_2) || defined(LINUX2_0)
 #define HAVE_DLL
 #define USE_DLFCN
-#else
-#undef	HAVE_DLL
-#undef	USE_DLFCN
-#endif
 
 #if !defined(MKLINUX) && !defined(NEED_TIME_R)
 #define NEED_TIME_R

nsprpub/pr/include/md/_pth.h

@@ -141,7 +141,7 @@ PR_EXTERN(PRIntn) pt_hpux_privcheck(void);
 /*
  * These platforms don't have sigtimedwait()
  */
-#if (defined(AIX) && !defined(AIX4_3)) || defined(LINUX2_0) \
+#if (defined(AIX) && !defined(AIX4_3)) || defined(LINUX) \
 	|| defined(FREEBSD)
 #define PT_NO_SIGTIMEDWAIT
 #endif

nsprpub/pr/src/misc/prnetdb.c

@@ -72,7 +72,7 @@ static sigset_t timer_set;
  */
 
 #if defined(SOLARIS) \
-	|| (defined(LINUX2_0) && defined(_REENTRANT) \
+	|| (defined(LINUX) && defined(_REENTRANT) \
         && !(defined(__GLIBC__) && __GLIBC__ >= 2))
 #define _PR_HAVE_GETPROTO_R
 #define _PR_HAVE_GETPROTO_R_POINTER
@@ -86,7 +86,7 @@ static sigset_t timer_set;
 #define _PR_HAVE_GETPROTO_R_INT
 #endif
 
-#if (defined(LINUX2_0) && defined(__GLIBC__) && __GLIBC__ >= 2)
+#if (defined(LINUX) && defined(__GLIBC__) && __GLIBC__ >= 2)
 #define _PR_HAVE_GETPROTO_R
 #define _PR_HAVE_5_ARG_GETPROTO_R
 #endif

nsprpub/pr/src/pthreads/ptthread.c

@@ -751,7 +751,7 @@ void _PR_InitThreads(
      * conflict with the use of these two signals in our GC support.
      * So we don't know how to support GC on Linux pthreads.
      */
-#if !defined(LINUX2_0) && !defined(FREEBSD)
+#if !defined(LINUX) && !defined(FREEBSD)
 	init_pthread_gc_support();
 #endif