diff --no-dereference -Naur -- gawk.normalized/builtin.c gawk.srctix/builtin.c
--- gawk.normalized/builtin.c	2017-10-17 20:44:47.000000000 +0200
+++ gawk.srctix/builtin.c	2017-10-23 14:02:19.228454845 +0200
@@ -1192,10 +1192,18 @@
 			 * Use snprintf return value to tell if there
 			 * is enough room in the buffer or not.
 			 */
+/* PATCH: Until Sortix has floating point printing. */
+#if defined(__sortix__) && !__SORTIX_HAS_FLOAT_PARSE__
+			while ((i = snprintf(cpbufs[1].buf,
+					     cpbufs[1].bufsize, "%lld",
+					     (long long)tmpval)) >=
+			       cpbufs[1].bufsize) {
+#else
 			while ((i = snprintf(cpbufs[1].buf,
 					     cpbufs[1].bufsize, "%.0f",
 					     tmpval)) >=
 			       cpbufs[1].bufsize) {
+#endif
 				if (cpbufs[1].buf == cpbufs[1].stackbuf)
 					cpbufs[1].buf = NULL;
 				if (i > 0) {
diff --no-dereference -Naur -- gawk.normalized/extension/filefuncs.c gawk.srctix/extension/filefuncs.c
--- gawk.normalized/extension/filefuncs.c	2017-09-17 19:35:53.000000000 +0200
+++ gawk.srctix/extension/filefuncs.c	2017-10-23 14:20:41.490845940 +0200
@@ -414,8 +414,12 @@
 	/* for block and character devices, add rdev, major and minor numbers */
 	if (S_ISBLK(sbuf->st_mode) || S_ISCHR(sbuf->st_mode)) {
 		array_set_numeric(array, "rdev", sbuf->st_rdev);
+#ifdef major
 		array_set_numeric(array, "major", major(sbuf->st_rdev));
+#endif
+#ifdef minor
 		array_set_numeric(array, "minor", minor(sbuf->st_rdev));
+#endif
 	}
 
 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
diff --no-dereference -Naur -- gawk.normalized/io.c gawk.srctix/io.c
--- gawk.normalized/io.c	2017-09-28 20:41:20.000000000 +0200
+++ gawk.srctix/io.c	2017-10-23 14:11:07.724176283 +0200
@@ -39,6 +39,8 @@
 #include <sys/ioctl.h>
 #endif /* HAVE_SYS_IOCTL_H */
 
+#include <sys/select.h>
+
 #ifndef O_ACCMODE
 #define O_ACCMODE	(O_RDONLY|O_WRONLY|O_RDWR)
 #endif
diff --no-dereference -Naur -- gawk.normalized/main.c gawk.srctix/main.c
--- gawk.normalized/main.c	2017-10-17 20:46:48.000000000 +0200
+++ gawk.srctix/main.c	2017-10-23 13:59:42.164103928 +0200
@@ -984,13 +984,7 @@
 	update_PROCINFO_num("api_minor", GAWK_API_MINOR_VERSION);
 #endif
 
-#ifdef GETPGRP_VOID
-#define getpgrp_arg() /* nothing */
-#else
-#define getpgrp_arg() getpid()
-#endif
-
-	value = getpgrp(getpgrp_arg());
+	value = getpgid(0);
 	update_PROCINFO_num("pgrpid", value);
 
 	/*
diff --no-dereference -Naur -- gawk.normalized/node.c gawk.srctix/node.c
--- gawk.normalized/node.c	2017-08-17 06:58:57.000000000 +0200
+++ gawk.srctix/node.c	2017-10-23 14:27:20.889566694 +0200
@@ -860,6 +860,8 @@
 	n->flags &= ~WSTRCUR;
 }
 
+/* PATCH: Sortix doesn't have putwc(3) and this function is unused. */
+#if 0
 static void __attribute__ ((unused))
 dump_wstr(FILE *fp, const wchar_t *str, size_t len)
 {
@@ -869,6 +871,7 @@
 	for (; len--; str++)
 		putwc(*str, fp);
 }
+#endif
 
 /* wstrstr --- walk haystack, looking for needle, wide char version */
 
diff --no-dereference -Naur -- gawk.normalized/support/getopt.c gawk.srctix/support/getopt.c
--- gawk.normalized/support/getopt.c	2017-08-17 06:58:57.000000000 +0200
+++ gawk.srctix/support/getopt.c	2017-10-23 14:07:18.365504982 +0200
@@ -55,18 +55,9 @@
 #ifndef ELIDE_CODE
 
 
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#if defined (__GNU_LIBRARY__) || defined (__CYGWIN__) || defined(__DJGPP__) || defined(__APPLE__) || defined(__MINGW32__) || defined(__sun) /* Illumos */
-/* Don't include stdlib.h for
- * non-GNU C libraries
- * non-Cygwin
- * non-DJGPP
- * non-MinGW
- * because some of them contain conflicting prototypes for getopt.  */
+/* PATCH: #&%!ing gnu portability: You need stdlib.h for malloc. */
 # include <stdlib.h>
 # include <unistd.h>
-#endif	/* GNU C library.  */
 
 #include <string.h>
 
diff --no-dereference -Naur -- gawk.normalized/support/getopt.h gawk.srctix/support/getopt.h
--- gawk.normalized/support/getopt.h	2017-08-17 06:58:57.000000000 +0200
+++ gawk.srctix/support/getopt.h	2017-10-23 14:09:07.278974591 +0200
@@ -1,3 +1,16 @@
+/* PATCH: Gawk doesn't seem to work with Sortix libc's getopt for some reason.
+          Gawk wants to use GNU getopt unconditionally. This causes conflicting
+          symbols, so rename gawk's replacements to avoid collisions. */
+#if defined(__sortix__)
+#define getopt gawk_getopt
+#define optarg gawk_optarg
+#define optind gawk_optind
+#define opterr gawk_opterr
+#define optopt gawk_optopt
+#define getopt_long gawk_getopt_long
+#define getopt_long_only gawk_getopt_long_only
+#define option gawk_option
+#endif
 /* Declarations for getopt.
    Copyright (C) 1989-2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
diff --no-dereference -Naur -- gawk.normalized/tixbuildinfo gawk.srctix/tixbuildinfo
--- gawk.normalized/tixbuildinfo	1970-01-01 01:00:00.000000000 +0100
+++ gawk.srctix/tixbuildinfo	2017-10-23 14:13:32.036823462 +0200
@@ -0,0 +1,6 @@
+tix.version=1
+tix.class=srctix
+pkg.name=gawk
+pkg.build-libraries=libiconv? libintl? libgmp? libmpfr? libreadline?
+pkg.build-system=configure
+pkg.post-install.cmd=tix-eradicate-libtool-la