config.gcc (*-*-linux*): Don't define HAVE_ATEXIT or BSTRING.

	* config.gcc (*-*-linux*): Don't define HAVE_ATEXIT or BSTRING.
	* tm.texi (EXIT_BODY): Update documentation.
	* config/freebsd.h, config/netware.h, config/arm/coff.h,
	config/arm/conix-elf.h, config/arm/unknown-elf.h,
	config/d30v/d30v.h, config/mcore/mcore.h, config/pj/pj.h,
	sparc/sp86x-aout.h: Remove definitions of HAVE_ATEXIT (some
	commented out) and associated comments.

f:
	* com.c [VMS]: Remove definition of BSTRING.

From-SVN: r38370

9 files changed, 1 insertions, 46 deletions

diff --git a/gcc/config/arm/coff.h b/gcc/config/arm/coff.h
index 6884029..94999d4 100644
--- a/gcc/config/arm/coff.h
+++ b/gcc/config/arm/coff.h
@@ -199,14 +199,6 @@ dtors_section ()						\
 #undef DO_GLOBAL_CTORS_BODY
 #undef DO_GLOBAL_DTORS_BODY
 
-/* If you don't define HAVE_ATEXIT, and the object file format/OS/whatever 
-   does not support constructors/destructors, then gcc implements destructors
-   by defining its own exit function, which calls the destructors.  This gcc
-   exit function overrides the C library's exit function, and this can cause
-   all kinds of havoc if the C library has a non-trivial exit function.  You
-   really don't want to use the exit function in libgcc2.c.  */
-#define HAVE_ATEXIT
-
 /* The ARM development system defines __main.  */
 #define NAME__MAIN  "__gccmain"
 #define SYMBOL__MAIN __gccmain
diff --git a/gcc/config/arm/conix-elf.h b/gcc/config/arm/conix-elf.h
index c1120ea..2d447a5 100644
--- a/gcc/config/arm/conix-elf.h
+++ b/gcc/config/arm/conix-elf.h
@@ -25,14 +25,6 @@ Boston, MA 02111-1307, USA.  */
 #define TARGET_VERSION	fputs (" (ARM/ELF ConiX)", stderr);
 #endif
 
-/* If you don't define HAVE_ATEXIT, and the object file format/OS/whatever 
-   does not support constructors/destructors, then gcc implements destructors
-   by defining its own exit function, which calls the destructors.  This gcc
-   exit function overrides the C library's exit function, and this can cause
-   all kinds of havoc if the C library has a non-trivial exit function.  You
-   really don't want to use the exit function in libgcc2.c.  */
-#define HAVE_ATEXIT
-
 /* Default to using APCS-32 and software floating point.  */
 #ifndef TARGET_DEFAULT
 #define TARGET_DEFAULT	(ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32)
diff --git a/gcc/config/arm/unknown-elf.h b/gcc/config/arm/unknown-elf.h
index 9b883d0..315baff 100644
--- a/gcc/config/arm/unknown-elf.h
+++ b/gcc/config/arm/unknown-elf.h
@@ -24,14 +24,6 @@ Boston, MA 02111-1307, USA.  */
 #define TARGET_VERSION	fputs (" (ARM/ELF non-Linux)", stderr);
 #endif
 
-/* If you don't define HAVE_ATEXIT, and the object file format/OS/whatever 
-   does not support constructors/destructors, then gcc implements destructors
-   by defining its own exit function, which calls the destructors.  This gcc
-   exit function overrides the C library's exit function, and this can cause
-   all kinds of havoc if the C library has a non-trivial exit function.  You
-   really don't want to use the exit function in libgcc2.c.  */
-#define HAVE_ATEXIT
-
 /* Default to using APCS-32 and software floating point.  */
 #ifndef TARGET_DEFAULT
 #define TARGET_DEFAULT	(ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
diff --git a/gcc/config/d30v/d30v.h b/gcc/config/d30v/d30v.h
index d05d294..e82b3fe 100644
--- a/gcc/config/d30v/d30v.h
+++ b/gcc/config/d30v/d30v.h
@@ -6041,13 +6041,6 @@ fprintf (STREAM, "\t.word .L%d\n", VALUE)
    `main'.  */
 /* #define DEFAULT_MAIN_RETURN */
 
-/* Define this if the target system supports the function `atexit' from the
-   ANSI C standard.  If this is not defined, and `INIT_SECTION_ASM_OP' is not
-   defined, a default `exit' function will be provided to support C++.
-
-   Defined by svr4.h */
-/* #define HAVE_ATEXIT */
-
 /* Define this if your `exit' function needs to do something besides calling an
    external function `_cleanup' before terminating with `_exit'.  The
    `EXIT_BODY' macro is only needed if netiher `HAVE_ATEXIT' nor
diff --git a/gcc/config/freebsd.h b/gcc/config/freebsd.h
index 7e8f035..f7cea4b 100644
--- a/gcc/config/freebsd.h
+++ b/gcc/config/freebsd.h
@@ -136,6 +136,3 @@ do {				 					\
 
 /* Handle #pragma weak and #pragma pack.  */
 #define HANDLE_SYSV_PRAGMA
-
-/* Tell libgcc2.c that FreeBSD targets support atexit(3).  */
-#define HAVE_ATEXIT
diff --git a/gcc/config/mcore/mcore.h b/gcc/config/mcore/mcore.h
index f39542f..8766703 100644
--- a/gcc/config/mcore/mcore.h
+++ b/gcc/config/mcore/mcore.h
@@ -1070,10 +1070,6 @@ extern enum reg_class reg_class_from_letter[];
 
 #define WORD_REGISTER_OPERATIONS
 
-/* Provided in ANSI C MCore libraries.  */
-#undef  HAVE_ATEXIT
-#define HAVE_ATEXIT 1
-
 /* Implicit library calls should use memcpy, not bcopy, etc.  */
 #define TARGET_MEM_FUNCTIONS
 
diff --git a/gcc/config/netware.h b/gcc/config/netware.h
index 58386a1..a28a9d0 100644
--- a/gcc/config/netware.h
+++ b/gcc/config/netware.h
@@ -1,6 +1,6 @@
 /* netware.h -- operating system specific defines to be used when 
    targeting GCC for some generic NetWare 4 system.
-   Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1993, 1994, 2000 Free Software Foundation, Inc.
 
    Written by David V. Henkel-Wallace (gumby@cygnus.com)
 
@@ -63,8 +63,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
    EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
    SELECT_RTX_SECTION.  We do both here just to be on the safe side.  */
 
-#define	HAVE_ATEXIT
-
 #undef	HAS_INIT_SECTION
 #undef	INIT_SECTION_ASM_OP
 
diff --git a/gcc/config/pj/pj.h b/gcc/config/pj/pj.h
index 039997d..8624fa2 100644
--- a/gcc/config/pj/pj.h
+++ b/gcc/config/pj/pj.h
@@ -1293,9 +1293,6 @@ do { char dstr[30];                                     \
    PROMOTE_FUNCTION_RETURN does the same for function returns.  */
 #define PROMOTE_FUNCTION_ARGS
 
-/* For the sake of libgcc2.c, indicate target supports atexit.  */
-#define HAVE_ATEXIT
-
 
 /* We can debug without a frame pointer.  */
 #define CAN_DEBUG_WITHOUT_FP 
diff --git a/gcc/config/sparc/sp86x-aout.h b/gcc/config/sparc/sp86x-aout.h
index 90eeae1..78a26cb 100644
--- a/gcc/config/sparc/sp86x-aout.h
+++ b/gcc/config/sparc/sp86x-aout.h
@@ -20,8 +20,6 @@ Boston, MA 02111-1307, USA.  */
 
 #include "sparc/sparc.h"
 
-#define HAVE_ATEXIT
-
 #undef CPP_PREDEFINES
 #define CPP_PREDEFINES "-D__sparc__ -D__sparclite86x__ -Acpu=sparc -Amachine=sparc"