+2001-05-22 Loren J. Rittle <ljrittle@acm.org>
+ David O'Brien <obrien@freebsd.org>
+
+ * config/freebsd.h (LIB_SPEC): Key the exact setting to
+ configure-time options and target version of FreeBSD. Set-up
+ to match architectural change in threading support. Correctly
+ report when -pthread option is not supported by configure-time
+ options.
+ (FBSD_CPP_PREDEFINES): Move from architecture-specific files
+ and extend to encode target version number in run-time setting
+ of __FreeBSD__ macro to match the system compiler.
+ (CPP_PREDEFINES): Likewise.
+ (PREFERRED_DEBUGGING_TYPE): Change to DWARF2_DEBUG.
+
+ * config/alpha/freebsd.h (CPP_PREDEFINES): Moved to common freebsd.h.
+ * config/i386/freebsd.h (CPP_PREDEFINES): Likewise.
+
2001-05-22 Loren J. Rittle <ljrittle@acm.org>
David O'Brien <obrien@freebsd.org>
/* Base configuration file for all FreeBSD targets.
- Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of GNU CC.
All FreeBSD architectures should include this file, which will specify
their commonalities.
Adapted from gcc/config/i386/freebsd-elf.h by
- David O'Brien <obrien@FreeBSD.org>. */
+ David O'Brien <obrien@FreeBSD.org>.
+ Further work by David O'Brien <obrien@FreeBSD.org> and
+ Loren J. Rittle <ljrittle@acm.org>. */
/* This defines which switch letters take arguments. On FreeBSD, most of
#undef WORD_SWITCH_TAKES_ARG
#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
+#if FBSD_MAJOR == 6
+#define FBSD_CPP_PREDEFINES \
+ "-D__FreeBSD__=6 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+#elif FBSD_MAJOR == 5
+#define FBSD_CPP_PREDEFINES \
+ "-D__FreeBSD__=5 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+#elif FBSD_MAJOR == 4
+#define FBSD_CPP_PREDEFINES \
+ "-D__FreeBSD__=4 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+#elif FBSD_MAJOR == 3
+#define FBSD_CPP_PREDEFINES \
+ "-D__FreeBSD__=3 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+#else
+#define FBSD_CPP_PREDEFINES \
+ "-D__FreeBSD__ -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+#endif
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES FBSD_CPP_PREDEFINES
+
/* Provide a CPP_SPEC appropriate for FreeBSD. We just deal with the GCC
option `-posix', and PIC issues. */
%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
%{posix:-D_POSIX_SOURCE}"
-/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate
- libc, depending on whether we're doing profiling or need threads support.
- (simular to the default, except no -lg, and no -p). */
+/* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
+ required by the user-land thread model. Before __FreeBSD_version
+ 500016, select the appropriate libc, depending on whether we're
+ doing profiling or need threads support. At __FreeBSD_version
+ 500016 and later, when threads support is requested include both
+ -lc and -lc_r instead of only -lc_r. To make matters interesting,
+ we can't actually use __FreeBSD_version provided by <osreldate.h>
+ directly since it breaks cross-compiling. As a final twist, make
+ it a hard error if -pthread is provided on the command line and gcc
+ was configured with --disable-threads (this will help avoid bug
+ reports from users complaining about threading when they
+ misconfigured the gcc bootstrap but are later consulting FreeBSD
+ manual pages that refer to the mythical -pthread option). */
#undef LIB_SPEC
+#ifdef FBSD_NO_THREADS
+#define LIB_SPEC " \
+ %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
+is built with the --enable-threads configure-time option.} \
+ %{!shared: \
+ %{!pg: -lc} \
+ %{pg: -lc_p} \
+ }"
+#else
+#if FBSD_MAJOR >= 5
+#define LIB_SPEC " \
+ %{!shared: \
+ %{!pg: %{pthread:-lc_r} -lc} \
+ %{pg: %{pthread:-lc_r_p} -lc_p} \
+ }"
+#else
#define LIB_SPEC " \
%{!shared: \
%{!pg: \
%{!pthread:-lc_p} \
%{pthread:-lc_r_p}} \
}"
-
+#endif
+#endif
/* Code generation parameters. */
#undef DEFAULT_VTABLE_THUNKS
#define DEFAULT_VTABLE_THUNKS 1
-/* This is BSD, so use stabs instead of DWARF debug format. */
+/* The GNU tools operate better with dwarf2 than stabs. Since we
+ don't have any native tools to be compatible with, default to
+ dwarf2. */
#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#undef IDENT_ASM_OP
#define IDENT_ASM_OP "\t.ident\t"
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