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Darwin : Adjust defaults for current bootstrap constraints.

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The toolchain now requires a C++11 compiler to bootstrap and
none of the older Darwin toolchains which were based on stabs
debugging are suitable.  We can simplify the debug setup now.

gcc/ChangeLog:

	* config/darwin.h (DSYMUTIL_SPEC): Default to DWARF
	(ASM_DEBUG_SPEC):Only define if the assembler supports
	stabs.
	(PREFERRED_DEBUGGING_TYPE): Default to DWARF.
	(DARWIN_PREFER_DWARF): Define.
	* config/darwin9.h (PREFERRED_DEBUGGING_TYPE): Remove.
	(DARWIN_PREFER_DWARF): Likewise
	(DSYMUTIL_SPEC): Likewise.
	(COLLECT_RUN_DSYMUTIL): Likewise.
	(ASM_DEBUG_SPEC): Likewise.
	(ASM_DEBUG_OPTION_SPEC): Likewise.
This commit is contained in:
Iain Sandoe 2020-12-30 10:36:52 +00:00
parent ae99b315ba
commit b2cee5e1e8
2 changed files with 26 additions and 37 deletions
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37
gcc/config/darwin.h
View file

@ -241,12 +241,18 @@ extern GTY(()) int darwin_ms_struct;
#define DSYMUTIL "\ndsymutil"
/* Spec that controls whether the debug linker is run automatically for
a link step. This needs to be done if there is a source file on the
command line which will result in a temporary object (and debug is
enabled). */
#define DSYMUTIL_SPEC \
"%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%{v} \
%{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
%{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
%{g*:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\
.f95|.f03|.f77|.for|.F|.F90|.F95|.F03: \
%{g*:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
#define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
@ -472,22 +478,31 @@ extern GTY(()) int darwin_ms_struct;
%{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
%{static}" ASM_MMACOSX_VERSION_MIN_SPEC
/* Default ASM_DEBUG_SPEC. Darwin's as cannot currently produce dwarf
debugging data. */
#ifdef HAVE_AS_STABS_DIRECTIVE
/* We only pass a debug option to the assembler if that supports stabs, since
dwarf is not uniformly supported in the assemblers. */
#define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}"
#define ASM_DEBUG_OPTION_SPEC ""
#else
#define ASM_DEBUG_SPEC ""
#endif
#undef ASM_DEBUG_OPTION_SPEC
#define ASM_DEBUG_OPTION_SPEC ""
#define ASM_FINAL_SPEC \
"%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} %<gsplit-dwarf"
/* We still allow output of STABS if the assembler supports it. */
/* We now require C++11 to bootstrap and newer tools than those based on
stabs, so require DWARF-2, even if stabs is supported by the assembler. */
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#define DARWIN_PREFER_DWARF
#define DWARF2_DEBUGGING_INFO 1
#ifdef HAVE_AS_STABS_DIRECTIVE
#define DBX_DEBUGGING_INFO 1
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
#endif
#define DWARF2_DEBUGGING_INFO 1
#define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
#define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
#define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"

26
gcc/config/darwin9.h
View file

@ -18,32 +18,6 @@ You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Prefer DWARF2. */
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#define DARWIN_PREFER_DWARF
/* Since DWARF2 is default, conditions for running dsymutil are different. */
#undef DSYMUTIL_SPEC
#define DSYMUTIL_SPEC \
"%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%{v} \
%{g*:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|.f95|.f03|.f77|.for|.F|.F90|.F95|.F03: \
%{g*:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
/* Tell collect2 to run dsymutil for us as necessary. */
#define COLLECT_RUN_DSYMUTIL 1
/* Only ask as for debug data if the debug style is stabs (since as doesn't
yet generate dwarf.) */
#undef ASM_DEBUG_SPEC
#define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{gstabs:--gstabs}}}"
#undef ASM_DEBUG_OPTION_SPEC
#define ASM_DEBUG_OPTION_SPEC ""
#undef ASM_OUTPUT_ALIGNED_COMMON
#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
do { \