* configure.in :Handle OpenBSD platforms.

        * configure: Rebuilt.
        * config/openbsd.h: New file.
        * config/xm-openbsd.h: New file.
        * config/t-openbsd: New file.
        * config/t-openbsd-thread: New file.

From-SVN: r25293

gcc/ChangeLog

+Thu Feb 18 19:59:37 1999  Marc Espie <espie@cvs.openbsd.org>
+
+	* configure.in :Handle OpenBSD platforms.
+	* configure: Rebuilt.
+        * config/openbsd.h: New file.
+        * config/xm-openbsd.h: New file.
+        * config/t-openbsd: New file.
+        * config/t-openbsd-thread: New file.
+
 Thu Feb 18 18:47:09 1999  Jeffrey A Law  (law@cygnus.com)
 
 	* function.c (assign_stack_temp_for_type): Round SIZE before calling

gcc/config/t-openbsd

+# Don't run fixproto
+STMP_FIXPROTO =
+
+# We don't need GCC's own include files but we do need lang specific ones.
+USER_H = ${LANG_EXTRA_HEADERS}
+INSTALL_ASSERT_H =
+

gcc/config/t-openbsd-thread

+# This is currently needed to compile libgcc2 for threads support
+TARGET_LIBGCC2_CFLAGS=-pthread
+#T_CFLAGS=-pthread
+#T_CPPFLAGS=-pthread
+

gcc/config/xm-openbsd.h

+/* Configuration fragment for hosts running a version of OpenBSD.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+/* This file gets included by all architectures. It holds stuff
+   that ought to be defined when hosting a compiler on an OpenBSD
+   machine, independently of the architecture. It's included by
+   ${cpu_type}/xm-openbsd.h, not included directly.  */
+
+/* OpenBSD is trying to be POSIX-compliant, to the point of fixing
+   problems that may occur with gcc's interpretation.  */
+#undef POSIX
+#define POSIX
+
+/* Ensure we get gnu C's defaults.  */
+#ifdef __GNUC__
+#define alloca __builtin_alloca
+#endif
+
+

gcc/configure.in

@@ -502,11 +502,23 @@ changequote([,])dnl
 	tm_file=${cpu_type}/${cpu_type}.h
 	xm_file=${cpu_type}/xm-${cpu_type}.h
 	
-	# Set the default macros to define for GNU/Linux systems.
+	# Common parts for linux-gnu and openbsd systems
 	case $machine in
 	*-*-linux-gnu*)
 		xm_defines="HAVE_ATEXIT POSIX BSTRING"
 		;;
+	*-*-openbsd*)
+		tm_file=${cpu_type}/openbsd.h
+		# On OpenBSD systems, the headers are okay
+		fixincludes=Makefile.in
+		tmake_file="t-libc-ok t-openbsd"
+		# avoid surprises, always provide an xm-openbsd file 
+		xm_file=${cpu_type}/xm-openbsd.h
+ 		if test x$enable_threads = xyes; then
+ 			thread_file='posix'
+			tmake_file="${tmake_file} t-openbsd-thread"
+		fi
+		;;
 	esac
 
 	case $machine in
@@ -586,6 +598,12 @@ changequote([,])dnl
 		fixincludes=fixinc.wrap
 		gas=yes gnu_ld=yes
 		;;
+
+	alpha*-*-openbsd*)
+		# default x-alpha is only appropriate for dec-osf.
+		target_cpu_default="MASK_GAS"
+		xmake_file=none
+		;;
 		
 	alpha*-dec-osf*)
 		if test x$stabs = xyes
@@ -780,6 +798,10 @@ changequote([,])dnl
 	h8300-*-*)
 		float_format=i32
 		;;
+	hppa*-*-openbsd*)
+		target_cpu_default="MASK_SNAKE"
+     tmake_file=pa/t-openbsd
+		;;
 	hppa1.1-*-pro*)
 		tm_file="pa/pa-pro.h ${tm_file} pa/pa-pro-end.h libgloss.h"
 		xm_file=pa/xm-papro.h
@@ -1107,10 +1129,8 @@ changequote([,])dnl
 		fixincludes=fixinc.wrap
 		tmake_file=i386/t-freebsd
 		;;
-	# We are hoping OpenBSD is still close enough to NetBSD that we can
-	# share the configurations.
 changequote(,)dnl
-	i[34567]86-*-netbsd* | i[34567]86-*-openbsd*)
+	i[34567]86-*-netbsd*)
 changequote([,])dnl
 		tm_file=i386/netbsd.h
 		# On NetBSD, the headers are already okay, except for math.h.
@@ -1118,6 +1138,14 @@ changequote([,])dnl
 		tmake_file=t-netbsd
 		;;
 changequote(,)dnl
+	i[34567]86-*-openbsd*)
+changequote([,])dnl
+		# Remove when the math emulator is fixed
+		target_cpu_default="MASK_NO_FANCY_MATH_387"
+		# we need collect2 until our bug is fixed...
+		use_collect2=yes
+		;;
+changequote(,)dnl
 	i[34567]86-*-coff*)
 changequote([,])dnl
 		tm_file=i386/i386-coff.h
@@ -1980,6 +2008,11 @@ changequote([,])dnl
 		tmake_file=t-netbsd
 		float_format=m68k
 		;;
+	m68k*-*-openbsd*)
+		float_format=m68k
+		# we need collect2 until our bug is fixed...
+		use_collect2=yes
+		;;
 	m68k-*-sysv3*)			# Motorola m68k's running system V.3
 		xm_file="xm-alloca.h ${xm_file}"
 		xm_defines=USG
@@ -2103,6 +2136,9 @@ changequote([,])dnl
 			tmake_file=m88k/t-luna
 		fi
 		;;
+	m88k-*-openbsd*)
+		tmake_file="${tmake_file} m88k/t-luna-gas"
+		;;
 	m88k-*-sysv3*)
 		tm_file=m88k/sysv3.h
 		extra_parts="crtbegin.o crtend.o"
@@ -2311,6 +2347,16 @@ changequote([,])dnl
 		gas=yes
 		fixincludes=Makefile.in 
 		;;
+	mips*el-*-openbsd*)	# mips little endian
+		target_cpu_default="MASK_GAS|MASK_ABICALLS"
+		tm_file=mips/openbsd.h
+		xmake_file=none
+		;;
+	mips*-*-openbsd*)		# mips big endian
+		target_cpu_default="MASK_GAS|MASK_ABICALLS"
+		tm_file=mips/openbsd-be.h
+		xmake_file=none
+		;;
 	mips-sony-bsd* | mips-sony-newsos*)	# Sony NEWS 3600 or risc/news.
 		tm_file="mips/news4.h ${tm_file}"
 		if test x$stabs = xyes; then
@@ -2661,6 +2707,9 @@ changequote([,])dnl
                 ;;
         pdp11-*-*)
 		;;
+	ns32k-*-openbsd*)
+		# Nothing special
+		;;
 	pyramid-*-*)
 		cpu_type=pyr
 		xmake_file=pyr/x-pyr
@@ -2673,6 +2722,13 @@ changequote([,])dnl
 		xmake_file=romp/x-mach
 		use_collect2=yes
 		;;
+	romp-*-openbsd*)
+		# Nothing special
+		;;
+	powerpc-*-openbsd*)
+		tmake_file="${tmake_file} rs6000/t-rs6000 rs6000/t-openbsd"
+		xmake_file=none
+		;;
 	powerpc-*-beos*)
 		cpu_type=rs6000
 		tm_file=rs6000/beos.h
@@ -2967,6 +3023,10 @@ changequote([,])dnl
 		fixincludes=fixinc.wrap
 		tmake_file=t-netbsd
 		;;
+	sparc-*-openbsd*)
+		# we need collect2 until our bug is fixed...
+		use_collect2=yes
+		;;
 	sparc-*-bsd*)
 		tm_file=sparc/bsd.h
 		;;
@@ -3195,6 +3255,9 @@ changequote([,])dnl
 		tmake_file=t-netbsd
 		float_format=vax
 		;;
+	vax-*-openbsd*)
+		tmake_file="${tm_file} vax/t-openbsd"
+		;;
 	vax-*-ultrix*)			# vaxen running ultrix
 		tm_file="${tm_file} vax/ultrix.h"
 		use_collect2=yes