;;; There are the following equivalence classes of architectures:
;;;   IA32, ARM, M68K, PowerPC
;;;   IA32-align-double, SPARC64, S390
;;;   SPARC
;;;   SPARCv9, Alpha
;;;   MIPS
;;;   PowerPC64

(("IA32"
  ;; OS: Linux, probably others
  ;; compiler: gcc, probably others
  ;; compiler options: default
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  2					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("IA32-align-double"
  ;; OS: Linux, probably others
  ;; compiler: gcc
  ;; compiler options: -malign-double
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  3					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("SPARC"
  ;; OS: Linux, Solaris, probably others
  ;; compiler: gcc, Sun Solaris C compiler, probably others
  ;; compiler options: default
  ;; needs work: need architectures for gcc with combinations of
  ;;		 -munaligned-doubles and -mfaster-structs
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("SPARCv9"
  ;; OS: Solaris, probably others
  ;; compiler: Sun Solaris C compiler, probably others
  ;; compiler options: -xarch=v9
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned long"			;*squished*
  "long"				;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  3					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  3					;*squished-alignment*
  3					;*file-alignment*
  3					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  8					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  8					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("SPARC64"
  ;; OS: unknown
  ;; compiler: unknown
  ;; compiler options: unknown
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  3					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ;; needs work: to check this
 ("MIPS"
  ;; OS: IRIX
  ;; compiler: gcc, SGI C compiler
  ;; compiler options: default
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  ;; needs work: not sure if this should be 2 or 3
  2					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  3					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("Alpha"
  ;; OS: Linux, OSF1
  ;; compiler: gcc, DEC C Compiler
  ;; compiler options: default
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned long"			;*squished*
  "long"				;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  3					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  3					;*squished-alignment*
  3					;*file-alignment*
  3					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  8					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  8					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ;; needs work: to check this
 ("ARM"
  ;; OS: Linux
  ;; compiler: gcc
  ;; compiler options: unknown
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  2					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ;; needs work: to check this
 ("M68K"
  ;; OS: Linux
  ;; compiler: gcc
  ;; compiler options: unknown
  ;; needs work: need architecture for -malign-int
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  2					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("PowerPC"
  ;; OS: Darwin
  ;; compiler: unknown
  ;; compiler options: unknown
  ;; needs work: need architectures for gcc with combinations of
  ;;		 -mbit-align, -mstrict-align, and -mno-eabi
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  2					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  2					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("S390"
  ;; OS: Linux
  ;; compiler: unknown
  ;; compiler options: unknown
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned"				;*squished*
  "int"					;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  3					;*flonum-alignment* when double
  2					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  2					;*squished-alignment*
  3					;*file-alignment*
  2					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  4					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  4					;*squished-size*
  #f)					;*include-malloc-for-alloca?*
 ("PowerPC64"
  ;; OS: AIX
  ;; compiler: gcc, xlc
  ;; compiler options: -maix64 (under gcc), -q64 (under xlc)
  "char"				;*char*
  "int"					;*fixnum*
  "float"				;*flonum* when float
  "double"				;*flonum* when double
  "unsigned"				;*length*
  "unsigned"				;*tag*
  "unsigned long"			;*squished*
  "long"				;*signed-squished*
  "FILE"				;*file*
  "jmp_buf"				;*jmpbuf*
  0					;*char-alignment*
  2					;*fixnum-alignment*
  2					;*flonum-alignment* when float
  2					;*flonum-alignment* when double
  3					;*pointer-alignment*
  2					;*length-alignment*
  2					;*tag-alignment*
  3					;*squished-alignment*
  3					;*file-alignment*
  3					;*jmpbuf-alignment*
  1					;*char-size*
  4					;*fixnum-size*
  4					;*flonum-size* when float
  8					;*flonum-size* when double
  8					;*pointer-size*
  4					;*length-size*
  4					;*tag-size*
  8					;*squished-size*
  #t)					;*include-malloc-for-alloca?*
 ("x86_64"
  "char"                                ;*char*
  "int"                                 ;*fixnum*
  "float"                               ;*flonum* when float
  "double"                              ;*flonum* when double
  "unsigned"                            ;*length*
  "unsigned"                            ;*tag*
  "unsigned long"                               ;*squished*
  "long"                                        ;*signed-squished*
  "FILE"                                ;*file*
  "jmp_buf"                             ;*jmpbuf*
  0                                     ;*char-alignment*
  2                                     ;*fixnum-alignment*
  2                                     ;*flonum-alignment* when float
  3                                     ;*flonum-alignment* when double
  3                                     ;*pointer-alignment*
  2                                     ;*length-alignment*
  2                                     ;*tag-alignment*
  3                                     ;*squished-alignment*
  3                                     ;*file-alignment*
  3                                     ;*jmpbuf-alignment*
  1                                     ;*char-size*
  4                                     ;*fixnum-size*
  4                                     ;*flonum-size* when float
  8                                     ;*flonum-size* when double
  8                                     ;*pointer-size*
  4                                     ;*length-size*
  4                                     ;*tag-size*
  8                                     ;*squished-size*
  #f))                                  ;*include-malloc-for-alloca?*