gcc/
200x-xx-xx  Nathan Sidwell  <nathan@codesourcery.com>
	    Richard Sandiford  <richard@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* config.gcc (m68k-*-aout*, m68k-*-coff*, m68020-*-elf*, m68k-*-elf*)
	(m68k-*-uclinux*, m68k-*-linux*, m68k-*-rtems*): Set default_m68k_cpu
	to the configuration's default CPU.
	(m68010-*-netbsdelf*, m68k*-*-netbsdelf*, m68k*-*-openbsd*): Likewise.
	Remove default masks.
	(m680[012]0-*-*): Set the default with_cpu to the first part of
	the target name.
	(m68k*-*-*): Set the default with_cpu to m$default_m68k_cpu.
	(m68k*-*-linux): Extend the --with-cpu handling to...
	(m680[012]0-*-*, m68k*-*-*): ...these configurations.  Allow m68000
	and m68010.  Don't set target_cpu_default2.
	* doc/install.texi: Document --with-cpu for m68k.
	* config/m68k/m68k.h (OPTION_DEFAULT_SPECS): Define.
	* config/m68k/m68k-none.h (TARGET_CPU_DEFAULT, M68K_CPU_m68k)
	(M68K_CPU_m68000, M68K_CPU_m68010, M68K_CPU_m68020, M68K_CPU_m68030)
	(M68K_CPU_m68040, M68K_CPU_m68302, M68K_CPU_m68332, TARGET_DEFAULT)
	(ASM_CPU_DEFAULT_SPEC, CC1_CPU_DEFAULT_SPEC): Delete.
	(ASM_SPEC): Remove use of %(asm_cpu_default).
	(EXTRA_SPECS, SUBTARGET_EXTRA_SPECS, MULTILIB_DEFAULTS): Delete.
	* config/m68k/linux.h (TARGET_DEFAULT): Delete.
	(CPP_SPEC): Merge definitions.  Do not handle __HAVE_68881__ here.
	* config/m68k/netbsd-elf.h (TARGET_OS_CPP_BUILTINS): Define
	__HAVE_FPU__ if TARGET_HARD_FLOAT.
	(TARGET_DEFAULT): Delete.
	(EXTRA_SPECS): Delete cpp_cpu_default_spec, cpp_cpu_spec,
	cpp_fpu_spec, asm_default_spec and netbsd_cpp_spec.
	(CPP_CPU_SPEC): Delete.
	(TARGET_VERSION): Merge definitions, using TARGET_68010 to pick
	the appropriate string.
	(CPP_CPU_DEFAULT_SPEC, ASM_DEFAULT_SPEC, CPP_FPU_SPEC): Delete.
	(CPP_SPEC): Define to NETBSD_CPP_SPEC.
	(ASM_SPEC): Don't use %(asm_default_spec).
	* config/m68k/m68k.c (TARGET_DEFAULT_TARGET_FLAGS): Remove
	TARGET_DEFAULT and add MASK_68881.
	* config/m68k/m68k.md: Remove mention of TARGET_DEFAULT from comments.

Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Richard Sandiford <richard@codesourcery.com>

From-SVN: r120711