Patch for building gcc-1.27 as described in https://kristerw.blogspot.com/2019/01/building-gcc-127.html

gcc-1.27.patch

diff -ruN gcc-1.27.orig/Makefile gcc-1.27/Makefile
--- gcc-1.27.orig/Makefile	1988-09-01 23:37:53.000000000 +0200
+++ gcc-1.27/Makefile	2019-01-26 18:40:26.378486900 +0100
@@ -19,7 +19,8 @@
 #and this notice must be preserved on all copies.
 
 
-CFLAGS = -g
+CCLIBFLAGS = -m32
+CFLAGS = -g -m32
 CC = cc
 # OLDCC should not be the GNU C compiler.
 OLDCC = cc
@@ -345,6 +346,8 @@
 
 # Copy the files into directories where they will be run.
 install: all
+	mkdir -p $(bindir)
+	mkdir -p $(libdir)
 	install cc1 $(libdir)/gcc-cc1
 	install -c -m 755 gnulib $(libdir)/gcc-gnulib
 	if [ -f /usr/bin/ranlib ] ; then  ranlib $(libdir)/gcc-gnulib ;fi
@@ -373,19 +376,19 @@
 stage1: force
 	-mkdir stage1
 	mv $(STAGESTUFF) $(STAGE_GCC) stage1
-	-rm stage1/gnulib
+	-rm -f stage1/gnulib
 	-ln gnulib stage1 || cp gnulib stage1
 
 stage2: force
 	-mkdir stage2
 	mv $(STAGESTUFF) $(STAGE_GCC) stage2
-	-rm stage2/gnulib
+	-rm -f stage2/gnulib
 	-ln gnulib stage2 || cp gnulib stage2
 
 stage3: force
 	-mkdir stage3
 	mv $(STAGESTUFF) $(STAGE_GCC) stage3
-	-rm stage3/gnulib
+	-rm -f stage3/gnulib
 	-ln gnulib stage3 || cp gnulib stage3
 
 #In GNU Make, ignore whether `stage*' exists.
diff -ruN gcc-1.27.orig/cccp.c gcc-1.27/cccp.c
--- gcc-1.27.orig/cccp.c	1988-08-20 21:56:27.000000000 +0200
+++ gcc-1.27/cccp.c	2019-01-26 18:40:26.382486847 +0100
@@ -129,6 +129,7 @@
 #include <sys/stat.h>
 #include <ctype.h>
 #include <stdio.h>
+#include <errno.h>
 
 #ifndef VMS
 #include <sys/file.h>
@@ -5009,9 +5010,6 @@
 perror_with_name (name)
      char *name;
 {
-  extern int errno, sys_nerr;
-  extern char *sys_errlist[];
-
   fprintf (stderr, "%s: ", progname);
   if (errno < sys_nerr)
     fprintf (stderr, "%s for `%s'\n", sys_errlist[errno], name);
diff -ruN gcc-1.27.orig/dbxout.c gcc-1.27/dbxout.c
--- gcc-1.27.orig/dbxout.c	1988-08-09 18:59:59.000000000 +0200
+++ gcc-1.27/dbxout.c	2019-01-26 18:40:26.382486847 +0100
@@ -1056,7 +1056,7 @@
 	  if (depth > 0)
 	    {
 	      blocknum = next_block_number++;
-	      fprintf (asmfile, ".stabn %d,0,0,LBB%d\n", N_LBRAC, blocknum);
+	      fprintf (asmfile, ".stabn %d,0,0,.LBB%d\n", N_LBRAC, blocknum);
 	    }
 
 	  /* Output the interior of the block.  */
@@ -1064,7 +1064,7 @@
 
 	  /* Refer to the marker for the end of the block.  */
 	  if (depth > 0)
-	    fprintf (asmfile, ".stabn %d,0,0,LBE%d\n", N_RBRAC, blocknum);
+	    fprintf (asmfile, ".stabn %d,0,0,.LBE%d\n", N_RBRAC, blocknum);
 	}
       stmt = TREE_CHAIN (stmt);
     }
diff -ruN gcc-1.27.orig/expr.c gcc-1.27/expr.c
--- gcc-1.27.orig/expr.c	1988-09-05 18:09:20.000000000 +0200
+++ gcc-1.27/expr.c	2019-01-26 18:40:26.382486847 +0100
@@ -3619,7 +3619,7 @@
       INIT_CUMULATIVE_ARGS (args_so_far, funtype);
       tem = FUNCTION_ARG (args_so_far, Pmode,
 			  build_pointer_type (TREE_TYPE (funtype)), 1);
-      if (GET_CODE (tem) == MEM)
+      if (tem != 0 && GET_CODE (tem) == MEM)
 	{
 	  actparms = tree_cons (error_mark_node,
 				build (SAVE_EXPR,
diff -ruN gcc-1.27.orig/gcc.c gcc-1.27/gcc.c
--- gcc-1.27.orig/gcc.c	1988-08-19 17:08:14.000000000 +0200
+++ gcc-1.27/gcc.c	2019-01-26 18:40:26.382486847 +0100
@@ -117,6 +117,7 @@
 #include <sys/types.h>
 #include <signal.h>
 #include <sys/file.h>
+#include <errno.h>
 #include "config.h"
 #include "obstack.h"
 
@@ -215,7 +216,7 @@
 		   %{g} %{O} %{W*} %{w} %{pedantic} %{ansi} %{traditional}\
 		   %{v:-version} %{gg:-symout %g.sym} %{pg:-p} %{p}\
 		   %{S:%{o*}%{!o*:-o %b.s}}%{!S:-o %g.s}\n\
-              %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %{gg:-G %g.sym}\
+              %{!S:as --32 %{R} %{j} %{J} %{h} %{d2} %a %{gg:-G %g.sym}\
                       %g.s %{c:%{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\n }}}"},
   {".i",
    "cc1 %i %1 %{!Q:-quiet} %{Y*} %{d*} %{m*} %{f*}\
@@ -232,7 +233,7 @@
 };
 
 /* Here is the spec for running the linker, after compiling all files.  */
-char *link_spec = "%{!c:%{!M*:%{!E:%{!S:ld %{o*} %l\
+char *link_spec = "%{!c:%{!M*:%{!E:%{!S:ld -m elf_i386 %{o*} %l\
  %{A} %{d} %{e*} %{N} %{n} %{r} %{s} %{S} %{T*} %{t} %{u*} %{X} %{x} %{z}\
  %{y*} %{!nostdlib:%S} \
  %{L*} %o %{!nostdlib:gnulib%s %{g:-lg} %L}\n }}}}";
@@ -355,8 +356,8 @@
 char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
 char *standard_exec_prefix_1 = "/usr/lib/gcc-";
 
-char *standard_startfile_prefix = "/lib/";
-char *standard_startfile_prefix_1 = "/usr/lib/";
+char *standard_startfile_prefix = "/lib32/";
+char *standard_startfile_prefix_1 = "/usr/lib32/";
 
 /* Clear out the vector of arguments (after a command is executed).  */
 
@@ -1217,8 +1218,6 @@
 pfatal_with_name (name)
      char *name;
 {
-  extern int errno, sys_nerr;
-  extern char *sys_errlist[];
   char *s;
 
   if (errno < sys_nerr)
@@ -1231,8 +1230,6 @@
 perror_with_name (name)
      char *name;
 {
-  extern int errno, sys_nerr;
-  extern char *sys_errlist[];
   char *s;
 
   if (errno < sys_nerr)
diff -ruN gcc-1.27.orig/include/ctype.h gcc-1.27/include/ctype.h
--- gcc-1.27.orig/include/ctype.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/ctype.h	2019-01-25 20:18:33.317567203 +0100
@@ -0,0 +1,4 @@
+#ifndef _CTYPE_H
+#define _CTYPE_H
+
+#endif
diff -ruN gcc-1.27.orig/include/errno.h gcc-1.27/include/errno.h
--- gcc-1.27.orig/include/errno.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/errno.h	2019-01-25 20:19:04.589093218 +0100
@@ -0,0 +1,9 @@
+#ifndef _ERRNO_H
+#define _ERRNO_H
+
+#define errno (*__errno_location())
+extern int *__errno_location(void);
+extern int sys_nerr;
+extern const char *const sys_errlist[];
+
+#endif
diff -ruN gcc-1.27.orig/include/fcntl.h gcc-1.27/include/fcntl.h
--- gcc-1.27.orig/include/fcntl.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/fcntl.h	2019-01-25 20:19:25.108782233 +0100
@@ -0,0 +1,6 @@
+#ifndef _FCNTL_H
+#define _GCNTL_H
+
+#define O_RDONLY  0
+
+#endif
diff -ruN gcc-1.27.orig/include/perror.h gcc-1.27/include/perror.h
--- gcc-1.27.orig/include/perror.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/perror.h	2019-01-25 20:19:47.476443267 +0100
@@ -0,0 +1,4 @@
+#ifndef _PERROR_H
+#define _PERROR_H
+
+#endif
diff -ruN gcc-1.27.orig/include/setjmp.h gcc-1.27/include/setjmp.h
--- gcc-1.27.orig/include/setjmp.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/setjmp.h	2019-01-25 20:20:04.580184090 +0100
@@ -0,0 +1,11 @@
+#ifndef _SETJMP_H
+#define _SETJMP_H
+
+struct __jmp_buf_tag
+{
+  int _t[39];
+};
+
+typedef struct __jmp_buf_tag jmp_buf[1];
+
+#endif
diff -ruN gcc-1.27.orig/include/signal.h gcc-1.27/include/signal.h
--- gcc-1.27.orig/include/signal.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/signal.h	2019-01-25 22:15:49.967734626 +0100
@@ -0,0 +1,12 @@
+#ifndef _SIGNAL_H
+#define _SIGNAL_H
+
+#define SIG_DFL  0
+#define SIG_IGN  1
+
+#define SIGHUP    1
+#define SIGINT    2
+#define SIGSEGV  11
+#define SIGTERM  15
+
+#endif
diff -ruN gcc-1.27.orig/include/stdio.h gcc-1.27/include/stdio.h
--- gcc-1.27.orig/include/stdio.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/stdio.h	2019-01-25 20:26:59.863102621 +0100
@@ -0,0 +1,12 @@
+#ifndef _STDIO_H
+#define _STDIO_H
+
+extern struct _IO_FILE *stderr;
+extern struct _IO_FILE *stdout;
+typedef struct _IO_FILE FILE;
+#define NULL  0
+#define EOF  (-1)
+
+FILE *fopen(const char *, const char *);
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/file.h gcc-1.27/include/sys/file.h
--- gcc-1.27.orig/include/sys/file.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/file.h	2019-01-25 20:21:38.650759337 +0100
@@ -0,0 +1,4 @@
+#ifndef _SYS_FILE_H
+#define _SYS_FILE_H
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/param.h gcc-1.27/include/sys/param.h
--- gcc-1.27.orig/include/sys/param.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/param.h	2019-01-25 20:22:02.786506014 +0100
@@ -0,0 +1,4 @@
+#ifndef _SYS_PARAM_H
+#define _SYS_PARAM_H
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/resource.h gcc-1.27/include/sys/resource.h
--- gcc-1.27.orig/include/sys/resource.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/resource.h	2019-01-25 20:22:30.586210482 +0100
@@ -0,0 +1,4 @@
+#ifndef _SYS_RESOURCE_H
+#define _SYS_RESOURCE_H
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/stat.h gcc-1.27/include/sys/stat.h
--- gcc-1.27.orig/include/sys/stat.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/stat.h	2019-01-25 20:58:18.132757639 +0100
@@ -0,0 +1,32 @@
+#ifndef _SYS_STAT_H
+#define _SYS_STAT_H
+
+struct stat {
+  unsigned long   st_dev;
+  unsigned long   __st_dev;
+  unsigned int    __pad1;
+  unsigned int    st_ino;
+  unsigned int    st_mode;
+  unsigned int    st_nlink;
+  unsigned int    st_uid;
+  unsigned int    st_gid;
+  unsigned long   st_rdev;
+  unsigned long   __st_rdev;
+  unsigned long   __pad2;
+  long            st_size;
+  int             st_blksize;
+  int             st_blocks;
+  unsigned int    st_atime;
+  unsigned int    __st_atime;
+  unsigned int    st_mtime;
+  unsigned int    __st_mtime;
+  unsigned int    st_ctime;
+  unsigned int    __st_ctime;
+  int             __pad3;
+  int             __pad4;
+};
+
+#define S_IFREG  0x8000
+#define S_IFMT   0xf000
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/time.h gcc-1.27/include/sys/time.h
--- gcc-1.27.orig/include/sys/time.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/time.h	2019-01-25 20:24:00.313220536 +0100
@@ -0,0 +1,4 @@
+#include _SYS_TIME_H
+#define _SYS_TIME_H
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/times.h gcc-1.27/include/sys/times.h
--- gcc-1.27.orig/include/sys/times.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/times.h	2019-01-25 20:24:20.440991552 +0100
@@ -0,0 +1,15 @@
+#ifndef _SYS_TIMES
+#define _SYS_TIMES
+
+#define HZ  100
+
+typedef long __kernel_clock_t;
+
+struct tms {
+  __kernel_clock_t tms_utime;
+  __kernel_clock_t tms_stime;
+  __kernel_clock_t tms_cutime;
+  __kernel_clock_t tms_cstime;
+};
+
+#endif
diff -ruN gcc-1.27.orig/include/sys/types.h gcc-1.27/include/sys/types.h
--- gcc-1.27.orig/include/sys/types.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/sys/types.h	2019-01-25 20:24:43.040731678 +0100
@@ -0,0 +1,4 @@
+#ifndef _SYS_TYPES_H
+#define _SYS_TYPES_H
+
+#endif
diff -ruN gcc-1.27.orig/include/time.h gcc-1.27/include/time.h
--- gcc-1.27.orig/include/time.h	1970-01-01 01:00:00.000000000 +0100
+++ gcc-1.27/include/time.h	2019-01-25 20:40:03.328705018 +0100
@@ -0,0 +1,19 @@
+#ifndef _TIME_H
+#define _TIME_H
+
+struct tm
+{
+  int tm_sec;
+  int tm_min;
+  int tm_hour;
+  int tm_mday;
+  int tm_mon;
+  int tm_year;
+  int tm_wday;
+  int tm_yday;
+  int tm_isdst;
+  long int tm_gmtoff;
+  const char *tm_zone;
+};
+
+#endif
diff -ruN gcc-1.27.orig/output-i386.c gcc-1.27/output-i386.c
--- gcc-1.27.orig/output-i386.c	1988-08-14 23:39:23.000000000 +0200
+++ gcc-1.27/output-i386.c	2019-01-26 18:40:26.382486847 +0100
@@ -339,7 +339,7 @@
     output_asm_insn ("fld%Q %0", &x);
 }
 
-char *output_move_const_single ();
+static char *output_move_const_single ();
 
 static char *
 singlemove_string (operands)
diff -ruN gcc-1.27.orig/stdarg.h gcc-1.27/stdarg.h
--- gcc-1.27.orig/stdarg.h	1988-02-02 00:30:11.000000000 +0100
+++ gcc-1.27/stdarg.h	2019-01-26 18:40:26.382486847 +0100
@@ -19,4 +19,7 @@
  (AP += __va_rounded_size (TYPE),					\
   *((TYPE *) (AP - __va_rounded_size (TYPE))))
 
+typedef va_list __gnuc_va_list;
+#define _VA_LIST_DEFINED
+
 #endif /* _STDARG_H */
diff -ruN gcc-1.27.orig/stddef.h gcc-1.27/stddef.h
--- gcc-1.27.orig/stddef.h	1988-05-14 07:05:30.000000000 +0200
+++ gcc-1.27/stddef.h	2019-01-26 18:40:26.382486847 +0100
@@ -7,7 +7,7 @@
 
 /* Unsigned type of `sizeof' something.  */
 
-typedef unsigned long size_t;
+typedef unsigned int size_t;
 
 /* A null pointer constant.  */
 
diff -ruN gcc-1.27.orig/tm-i386v.h gcc-1.27/tm-i386v.h
--- gcc-1.27.orig/tm-i386v.h	1988-09-04 06:37:33.000000000 +0200
+++ gcc-1.27/tm-i386v.h	2019-01-26 18:40:26.382486847 +0100
@@ -32,9 +32,10 @@
 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
 
 #define STARTFILE_SPEC  \
-  "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
+  "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} crti.o%s"
 
-#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} crtn.o%s"
+#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} crtn.o%s" \
+    " -dynamic-linker ld-linux.so.2%s"
 
 /* Specify predefined symbols in preprocessor.  */
 
@@ -45,13 +46,13 @@
 #define IDENT_DIRECTIVE
 #define SCCS_DIRECTIVE
 
-/* We want to output SDB debugging information.  */
+/* We don't want to output SDB debugging information.  */
 
-#define SDB_DEBUGGING_INFO
+#undef SDB_DEBUGGING_INFO
 
-/* We don't want to output DBX debugging information.  */
+/* We want to output DBX debugging information.  */
 
-#undef DBX_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
 
 /* Implicit library calls should use memcpy, not bcopy, etc.  */
 
@@ -59,6 +60,9 @@
 
 /* Don't write a `.optim' pseudo; this assembler doesn't handle them.  */
 
+#undef ASM_FILE_START
+#define ASM_FILE_START(FILE)
+
 #undef ASM_FILE_START_1
 #define ASM_FILE_START_1(FILE)